Changes in 4.19.299
vfs: fix readahead(2) on block devices
genirq/matrix: Exclude managed interrupts in irq_matrix_allocated()
i40e: fix potential memory leaks in i40e_remove()
tcp_metrics: add missing barriers on delete
tcp_metrics: properly set tp->snd_ssthresh in tcp_init_metrics()
tcp_metrics: do not create an entry from tcp_init_metrics()
wifi: rtlwifi: fix EDCA limit set by BT coexistence
can: dev: move driver related infrastructure into separate subdir
can: dev: can_restart(): don't crash kernel if carrier is OK
can: dev: can_restart(): fix race condition between controller restart and netif_carrier_on()
thermal: core: prevent potential string overflow
chtls: fix tp->rcv_tstamp initialization
ACPI: sysfs: Fix create_pnp_modalias() and create_of_modalias()
ipv6: avoid atomic fragment on GSO packets
macsec: Fix traffic counters/statistics
macsec: use DEV_STATS_INC()
net: add DEV_STATS_READ() helper
ipvlan: properly track tx_errors
regmap: debugfs: Fix a erroneous check after snprintf()
clk: qcom: clk-rcg2: Fix clock rate overflow for high parent frequencies
clk: keystone: pll: fix a couple NULL vs IS_ERR() checks
clk: npcm7xx: Fix incorrect kfree
clk: mediatek: clk-mt6797: Add check for mtk_alloc_clk_data
clk: mediatek: clk-mt2701: Add check for mtk_alloc_clk_data
platform/x86: wmi: Fix probe failure when failing to register WMI devices
platform/x86: wmi: remove unnecessary initializations
platform/x86: wmi: Fix opening of char device
hwmon: (coretemp) Fix potentially truncated sysfs attribute name
drm/rockchip: vop: Fix reset of state in duplicate state crtc funcs
drm/radeon: possible buffer overflow
drm/rockchip: cdn-dp: Fix some error handling paths in cdn_dp_probe()
ARM: dts: qcom: mdm9615: populate vsdcc fixed regulator
firmware: ti_sci: Mark driver as non removable
clk: scmi: Free scmi_clk allocated when the clocks with invalid info are skipped
hwrng: geode - fix accessing registers
sched/rt: Provide migrate_disable/enable() inlines
nd_btt: Make BTT lanes preemptible
HID: cp2112: Use irqchip template
hid: cp2112: Fix duplicate workqueue initialization
ARM: 9321/1: memset: cast the constant byte to unsigned char
ext4: move 'ix' sanity check to corrent position
RDMA/hfi1: Workaround truncation compilation error
sh: bios: Revive earlyprintk support
ASoC: Intel: Skylake: Fix mem leak when parsing UUIDs fails
ASoC: ams-delta.c: use component after check
mfd: dln2: Fix double put in dln2_probe
leds: pwm: simplify if condition
leds: pwm: convert to atomic PWM API
leds: pwm: Don't disable the PWM when the LED should be off
ledtrig-cpu: Limit to 8 CPUs
leds: trigger: ledtrig-cpu:: Fix 'output may be truncated' issue for 'cpu'
tty: tty_jobctrl: fix pid memleak in disassociate_ctty()
usb: dwc2: fix possible NULL pointer dereference caused by driver concurrency
dmaengine: ti: edma: handle irq_of_parse_and_map() errors
misc: st_core: Do not call kfree_skb() under spin_lock_irqsave()
tools: iio: privatize globals and functions in iio_generic_buffer.c file
tools: iio: iio_generic_buffer: Fix some integer type and calculation
tools: iio: iio_generic_buffer ensure alignment
USB: usbip: fix stub_dev hub disconnect
dmaengine: pxa_dma: Remove an erroneous BUG_ON() in pxad_free_desc()
f2fs: fix to initialize map.m_pblk in f2fs_precache_extents()
pcmcia: cs: fix possible hung task and memory leak pccardd()
pcmcia: ds: fix refcount leak in pcmcia_device_add()
pcmcia: ds: fix possible name leak in error path in pcmcia_device_add()
media: bttv: fix use after free error due to btv->timeout timer
media: s3c-camif: Avoid inappropriate kfree()
media: dvb-usb-v2: af9035: fix missing unlock
pwm: sti: Avoid conditional gotos
pwm: sti: Reduce number of allocations and drop usage of chip_data
pwm: brcmstb: Utilize appropriate clock APIs in suspend/resume
Input: synaptics-rmi4 - fix use after free in rmi_unregister_function()
llc: verify mac len before reading mac header
tipc: Change nla_policy for bearer-related names to NLA_NUL_STRING
dccp: Call security_inet_conn_request() after setting IPv4 addresses.
dccp/tcp: Call security_inet_conn_request() after setting IPv6 addresses.
r8169: improve rtl_set_rx_mode
net: r8169: Disable multicast filter for RTL8168H and RTL8107E
net/smc: postpone release of clcsock
net/smc: wait for pending work before clcsock release_sock
net/smc: fix dangling sock under state SMC_APPFINCLOSEWAIT
tg3: power down device only on SYSTEM_POWER_OFF
r8169: respect userspace disabling IFF_MULTICAST
netfilter: xt_recent: fix (increase) ipv6 literal buffer length
fbdev: imsttfb: Fix error path of imsttfb_probe()
fbdev: imsttfb: fix a resource leak in probe
fbdev: fsl-diu-fb: mark wr_reg_wa() static
Revert "mmc: core: Capture correct oemid-bits for eMMC cards"
btrfs: use u64 for buffer sizes in the tree search ioctls
Linux 4.19.299
Change-Id: I130ef8f6fcd9ce2815d8b2493f96082376730758
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
[ Upstream commit 36c75ce3bd299878fd9b238e9803d3817ddafbf3 ]
nd_region_acquire_lane uses get_cpu, which disables preemption. This is
an issue on PREEMPT_RT kernels, since btt_write_pg and also
nd_region_acquire_lane itself take a spin lock, resulting in BUG:
sleeping function called from invalid context.
Fix the issue by replacing get_cpu with smp_process_id and
migrate_disable when needed. This makes BTT operations preemptible, thus
permitting the use of spin_lock.
BUG example occurring when running ndctl tests on PREEMPT_RT kernel:
BUG: sleeping function called from invalid context at
kernel/locking/spinlock_rt.c:48
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 4903, name:
libndctl
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
Preemption disabled at:
[<ffffffffc1313db5>] nd_region_acquire_lane+0x15/0x90 [libnvdimm]
Call Trace:
<TASK>
dump_stack_lvl+0x8e/0xb0
__might_resched+0x19b/0x250
rt_spin_lock+0x4c/0x100
? btt_write_pg+0x2d7/0x500 [nd_btt]
btt_write_pg+0x2d7/0x500 [nd_btt]
? local_clock_noinstr+0x9/0xc0
btt_submit_bio+0x16d/0x270 [nd_btt]
__submit_bio+0x48/0x80
__submit_bio_noacct+0x7e/0x1e0
submit_bio_wait+0x58/0xb0
__blkdev_direct_IO_simple+0x107/0x240
? inode_set_ctime_current+0x51/0x110
? __pfx_submit_bio_wait_endio+0x10/0x10
blkdev_write_iter+0x1d8/0x290
vfs_write+0x237/0x330
...
</TASK>
Fixes: 5212e11fde ("nd_btt: atomic sector updates")
Signed-off-by: Tomas Glozar <tglozar@redhat.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
In case a platform doesn't provide explicit flush-hints but provides an
explicit flush callback via ND_REGION_ASYNC region flag, then
nvdimm_has_flush() still returns '0' indicating that writes do not
require flushing. This happens on PPC64 with patch at [1] applied, where
'deep_flush' of a region was denied even though an explicit flush
function was provided.
Fix this by adding a condition to nvdimm_has_flush() to test for the
ND_REGION_ASYNC flag on the region and see if a 'region->flush' callback
is assigned.
Bug: 254441685
Link: http://lore.kernel.org/r/161703936121.36.7260632399582101498.stgit@e1fbed493c87 [1]
Fixes: c5d4355d10d4 ("libnvdimm: nd_region flush callback support")
Reported-by: Shivaprasad G Bhat <sbhat@linux.ibm.com>
Signed-off-by: Vaibhav Jain <vaibhav@linux.ibm.com>
Link: https://lore.kernel.org/r/20210402092555.208590-1-vaibhav@linux.ibm.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
(cherry picked from commit a2948b17f6b936fc52f86c0f92c46d2f91928b79)
Signed-off-by: Lee Jones <joneslee@google.com>
Change-Id: I220650135909d6a57f46443ea98b9aae5228d008
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Merge 4.19.251 into android-4.19-stable
Changes in 4.19.251
nvdimm: Fix badblocks clear off-by-one error
dm raid: fix accesses beyond end of raid member array
dm raid: fix KASAN warning in raid5_add_disks
s390/archrandom: simplify back to earlier design and initialize earlier
SUNRPC: Fix READ_PLUS crasher
net: rose: fix UAF bugs caused by timer handler
net: usb: ax88179_178a: Fix packet receiving
virtio-net: fix race between ndo_open() and virtio_device_ready()
selftests/net: pass ipv6_args to udpgso_bench's IPv6 TCP test
net: tun: unlink NAPI from device on destruction
net: tun: stop NAPI when detaching queues
RDMA/qedr: Fix reporting QP timeout attribute
usbnet: fix memory allocation in helpers
net: ipv6: unexport __init-annotated seg6_hmac_net_init()
caif_virtio: fix race between virtio_device_ready() and ndo_open()
netfilter: nft_dynset: restore set element counter when failing to update
net: bonding: fix possible NULL deref in rlb code
net: bonding: fix use-after-free after 802.3ad slave unbind
nfc: nfcmrvl: Fix irq_of_parse_and_map() return value
NFC: nxp-nci: Don't issue a zero length i2c_master_read()
net: tun: avoid disabling NAPI twice
xen/gntdev: Avoid blocking in unmap_grant_pages()
hwmon: (ibmaem) don't call platform_device_del() if platform_device_add() fails
net: dsa: bcm_sf2: force pause link settings
sit: use min
ipv6/sit: fix ipip6_tunnel_get_prl return value
xen/blkfront: fix leaking data in shared pages
xen/netfront: fix leaking data in shared pages
xen/netfront: force data bouncing when backend is untrusted
xen/blkfront: force data bouncing when backend is untrusted
xen/arm: Fix race in RB-tree based P2M accounting
net: usb: qmi_wwan: add Telit 0x1060 composition
net: usb: qmi_wwan: add Telit 0x1070 composition
Linux 4.19.251
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ie9952c1de1287952d707e7b5aafef9f4d39cdd2d
commit ef9102004a87cb3f8b26e000a095a261fc0467d3 upstream.
nvdimm_clear_badblocks_region() validates badblock clearing requests
against the span of the region, however it compares the inclusive
badblock request range to the exclusive region range. Fix up the
off-by-one error.
Fixes: 23f4984483 ("libnvdimm: rework region badblocks clearing")
Cc: <stable@vger.kernel.org>
Signed-off-by: Chris Ye <chris.ye@intel.com>
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Link: https://lore.kernel.org/r/165404219489.2445897.9792886413715690399.stgit@dwillia2-xfh
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit 1bf6a186c4.
The patch series submitted for the 4.19-stable branch:
https://lore.kernel.org/r/20210223092859.17033-1-jefflexu@linux.alibaba.com
should be reverted from the android-4.19-stable branch as it breaks the
ABI for device_add_disk() and the issue the series is resolving does not
affect Android devices. So revert the whole thing.
Bug: 161946584
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: If2f890a6682dad1d6b0d532d35bc13fe3b8a31a9
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Merge 4.19.180 into android-4.19-stable
Changes in 4.19.180
btrfs: raid56: simplify tracking of Q stripe presence
btrfs: fix raid6 qstripe kmap
btrfs: validate qgroup inherit for SNAP_CREATE_V2 ioctl
btrfs: free correct amount of space in btrfs_delayed_inode_reserve_metadata
btrfs: unlock extents in btrfs_zero_range in case of quota reservation errors
PM: runtime: Update device status before letting suppliers suspend
dm bufio: subtract the number of initial sectors in dm_bufio_get_device_size
drm/amdgpu: fix parameter error of RREG32_PCIE() in amdgpu_regs_pcie
usbip: tools: fix build error for multiple definition
Revert "zram: close udev startup race condition as default groups"
block: genhd: add 'groups' argument to device_add_disk
nvme: register ns_id attributes as default sysfs groups
aoe: register default groups with device_add_disk()
zram: register default groups with device_add_disk()
virtio-blk: modernize sysfs attribute creation
ALSA: ctxfi: cthw20k2: fix mask on conf to allow 4 bits
RDMA/rxe: Fix missing kconfig dependency on CRYPTO
rsxx: Return -EFAULT if copy_to_user() fails
dm verity: fix FEC for RS roots unaligned to block size
r8169: fix resuming from suspend on RTL8105e if machine runs on battery
net: dsa: add GRO support via gro_cells
dm table: fix iterate_devices based device capability checks
dm table: fix DAX iterate_devices based device capability checks
dm table: fix zoned iterate_devices based device capability checks
iommu/amd: Fix sleeping in atomic in increase_address_space()
mwifiex: pcie: skip cancel_work_sync() on reset failure path
platform/x86: acer-wmi: Cleanup ACER_CAP_FOO defines
platform/x86: acer-wmi: Cleanup accelerometer device handling
platform/x86: acer-wmi: Add new force_caps module parameter
platform/x86: acer-wmi: Add ACER_CAP_SET_FUNCTION_MODE capability flag
platform/x86: acer-wmi: Add support for SW_TABLET_MODE on Switch devices
platform/x86: acer-wmi: Add ACER_CAP_KBD_DOCK quirk for the Aspire Switch 10E SW3-016
HID: mf: add support for 0079:1846 Mayflash/Dragonrise USB Gamecube Adapter
media: cx23885: add more quirks for reset DMA on some AMD IOMMU
ASoC: Intel: bytcr_rt5640: Add quirk for ARCHOS Cesium 140
PCI: Add function 1 DMA alias quirk for Marvell 9215 SATA controller
misc: eeprom_93xx46: Add quirk to support Microchip 93LC46B eeprom
drm/msm/a5xx: Remove overwriting A5XX_PC_DBG_ECO_CNTL register
mmc: sdhci-of-dwcmshc: set SDHCI_QUIRK2_PRESET_VALUE_BROKEN
Linux 4.19.180
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I1d133776c03abf37203427cbc1c0edfa9c396edd
commit fef912bf860e8e7e48a2bfb978a356bba743a8b7 upstream.
Update device_add_disk() to take an 'groups' argument so that
individual drivers can register a device with additional sysfs
attributes.
This avoids race condition the driver would otherwise have if these
groups were to be created with sysfs_add_groups().
Signed-off-by: Martin Wilck <martin.wilck@suse.com>
Signed-off-by: Hannes Reinecke <hare@suse.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Changes in 4.19.178
HID: make arrays usage and value to be the same
USB: quirks: sort quirk entries
usb: quirks: add quirk to start video capture on ELMO L-12F document camera reliable
ntfs: check for valid standard information attribute
arm64: tegra: Add power-domain for Tegra210 HDA
scripts: use pkg-config to locate libcrypto
scripts: set proper OpenSSL include dir also for sign-file
block: add helper for checking if queue is registered
block: split .sysfs_lock into two locks
block: fix race between switching elevator and removing queues
block: don't release queue's sysfs lock during switching elevator
NET: usb: qmi_wwan: Adding support for Cinterion MV31
cifs: Set CIFS_MOUNT_USE_PREFIX_PATH flag on setting cifs_sb->prepath.
scripts/recordmcount.pl: support big endian for ARCH sh
jump_label/lockdep: Assert we hold the hotplug lock for _cpuslocked() operations
locking/static_key: Fix false positive warnings on concurrent dec/inc
vmlinux.lds.h: add DWARF v5 sections
kdb: Make memory allocations more robust
PCI: qcom: Use PHY_REFCLK_USE_PAD only for ipq8064
bfq: Avoid false bfq queue merging
ALSA: usb-audio: Fix PCM buffer allocation in non-vmalloc mode
MIPS: vmlinux.lds.S: add missing PAGE_ALIGNED_DATA() section
random: fix the RNDRESEEDCRNG ioctl
ath10k: Fix error handling in case of CE pipe init failure
Bluetooth: btqcomsmd: Fix a resource leak in error handling paths in the probe function
Bluetooth: Fix initializing response id after clearing struct
ARM: dts: exynos: correct PMIC interrupt trigger level on Artik 5
ARM: dts: exynos: correct PMIC interrupt trigger level on Monk
ARM: dts: exynos: correct PMIC interrupt trigger level on Rinato
ARM: dts: exynos: correct PMIC interrupt trigger level on Spring
ARM: dts: exynos: correct PMIC interrupt trigger level on Arndale Octa
ARM: dts: exynos: correct PMIC interrupt trigger level on Odroid XU3 family
arm64: dts: exynos: correct PMIC interrupt trigger level on TM2
arm64: dts: exynos: correct PMIC interrupt trigger level on Espresso
bpf: Avoid warning when re-casting __bpf_call_base into __bpf_call_base_args
arm64: dts: allwinner: A64: properly connect USB PHY to port 0
arm64: dts: allwinner: Drop non-removable from SoPine/LTS SD card
arm64: dts: allwinner: A64: Limit MMC2 bus frequency to 150 MHz
cpufreq: brcmstb-avs-cpufreq: Free resources in error path
cpufreq: brcmstb-avs-cpufreq: Fix resource leaks in ->remove()
ACPICA: Fix exception code class checks
usb: gadget: u_audio: Free requests only after callback
Bluetooth: drop HCI device reference before return
Bluetooth: Put HCI device if inquiry procedure interrupts
memory: ti-aemif: Drop child node when jumping out loop
ARM: dts: Configure missing thermal interrupt for 4430
usb: dwc2: Do not update data length if it is 0 on inbound transfers
usb: dwc2: Abort transaction after errors with unknown reason
usb: dwc2: Make "trimming xfer length" a debug message
staging: rtl8723bs: wifi_regd.c: Fix incorrect number of regulatory rules
ARM: dts: armada388-helios4: assign pinctrl to LEDs
ARM: dts: armada388-helios4: assign pinctrl to each fan
arm64: dts: msm8916: Fix reserved and rfsa nodes unit address
ARM: s3c: fix fiq for clang IAS
soc: aspeed: snoop: Add clock control logic
bpf_lru_list: Read double-checked variable once without lock
ath9k: fix data bus crash when setting nf_override via debugfs
ibmvnic: Set to CLOSED state even on error
bnxt_en: reverse order of TX disable and carrier off
xen/netback: fix spurious event detection for common event case
mac80211: fix potential overflow when multiplying to u32 integers
bpf: Fix bpf_fib_lookup helper MTU check for SKB ctx
tcp: fix SO_RCVLOWAT related hangs under mem pressure
cxgb4/chtls/cxgbit: Keeping the max ofld immediate data size same in cxgb4 and ulds
b43: N-PHY: Fix the update of coef for the PHY revision >= 3case
ibmvnic: add memory barrier to protect long term buffer
ibmvnic: skip send_request_unmap for timeout reset
net: amd-xgbe: Reset the PHY rx data path when mailbox command timeout
net: amd-xgbe: Fix NETDEV WATCHDOG transmit queue timeout warning
net: amd-xgbe: Reset link when the link never comes back
net: amd-xgbe: Fix network fluctuations when using 1G BELFUSE SFP
net: mvneta: Remove per-cpu queue mapping for Armada 3700
fbdev: aty: SPARC64 requires FB_ATY_CT
drm/gma500: Fix error return code in psb_driver_load()
gma500: clean up error handling in init
crypto: sun4i-ss - fix kmap usage
drm/amdgpu: Fix macro name _AMDGPU_TRACE_H_ in preprocessor if condition
MIPS: c-r4k: Fix section mismatch for loongson2_sc_init
MIPS: lantiq: Explicitly compare LTQ_EBU_PCC_ISTAT against 0
media: i2c: ov5670: Fix PIXEL_RATE minimum value
media: camss: missing error code in msm_video_register()
media: vsp1: Fix an error handling path in the probe function
media: em28xx: Fix use-after-free in em28xx_alloc_urbs
media: media/pci: Fix memleak in empress_init
media: tm6000: Fix memleak in tm6000_start_stream
ASoC: cs42l56: fix up error handling in probe
crypto: bcm - Rename struct device_private to bcm_device_private
drm/amd/display: Fix 10/12 bpc setup in DCE output bit depth reduction.
media: lmedm04: Fix misuse of comma
media: qm1d1c0042: fix error return code in qm1d1c0042_init()
media: cx25821: Fix a bug when reallocating some dma memory
media: pxa_camera: declare variable when DEBUG is defined
media: uvcvideo: Accept invalid bFormatIndex and bFrameIndex values
crypto: talitos - Work around SEC6 ERRATA (AES-CTR mode data size error)
ata: ahci_brcm: Add back regulators management
ASoC: cpcap: fix microphone timeslot mask
f2fs: fix to avoid inconsistent quota data
drm/amdgpu: Prevent shift wrapping in amdgpu_read_mask()
Drivers: hv: vmbus: Avoid use-after-free in vmbus_onoffer_rescind()
btrfs: clarify error returns values in __load_free_space_cache
hwrng: timeriomem - Fix cooldown period calculation
crypto: ecdh_helper - Ensure 'len >= secret.len' in decode_key()
ima: Free IMA measurement buffer on error
ima: Free IMA measurement buffer after kexec syscall
fs/jfs: fix potential integer overflow on shift of a int
jffs2: fix use after free in jffs2_sum_write_data()
capabilities: Don't allow writing ambiguous v3 file capabilities
clk: meson: clk-pll: fix initializing the old rate (fallback) for a PLL
quota: Fix memory leak when handling corrupted quota file
spi: cadence-quadspi: Abort read if dummy cycles required are too many
clk: sunxi-ng: h6: Fix CEC clock
HID: core: detect and skip invalid inputs to snto32()
dmaengine: fsldma: Fix a resource leak in the remove function
dmaengine: fsldma: Fix a resource leak in an error handling path of the probe function
dmaengine: owl-dma: Fix a resource leak in the remove function
dmaengine: hsu: disable spurious interrupt
mfd: bd9571mwv: Use devm_mfd_add_devices()
fdt: Properly handle "no-map" field in the memory region
of/fdt: Make sure no-map does not remove already reserved regions
power: reset: at91-sama5d2_shdwc: fix wkupdbc mask
rtc: s5m: select REGMAP_I2C
clocksource/drivers/mxs_timer: Add missing semicolon when DEBUG is defined
RDMA/mlx5: Use the correct obj_id upon DEVX TIR creation
clk: sunxi-ng: h6: Fix clock divider range on some clocks
regulator: axp20x: Fix reference cout leak
certs: Fix blacklist flag type confusion
spi: atmel: Put allocated master before return
regulator: s5m8767: Drop regulators OF node reference
isofs: release buffer head before return
auxdisplay: ht16k33: Fix refresh rate handling
IB/umad: Return EIO in case of when device disassociated
IB/umad: Return EPOLLERR in case of when device disassociated
KVM: PPC: Make the VMX instruction emulation routines static
powerpc/47x: Disable 256k page size
mmc: usdhi6rol0: Fix a resource leak in the error handling path of the probe
mmc: renesas_sdhi_internal_dmac: Fix DMA buffer alignment from 8 to 128-bytes
ARM: 9046/1: decompressor: Do not clear SCTLR.nTLSMD for ARMv7+ cores
amba: Fix resource leak for drivers without .remove
tracepoint: Do not fail unregistering a probe due to memory failure
perf tools: Fix DSO filtering when not finding a map for a sampled address
RDMA/rxe: Fix coding error in rxe_recv.c
RDMA/rxe: Correct skb on loopback path
spi: stm32: properly handle 0 byte transfer
mfd: wm831x-auxadc: Prevent use after free in wm831x_auxadc_read_irq()
powerpc/pseries/dlpar: handle ibm, configure-connector delay status
powerpc/8xx: Fix software emulation interrupt
clk: qcom: gcc-msm8998: Fix Alpha PLL type for all GPLLs
spi: pxa2xx: Fix the controller numbering for Wildcat Point
Input: sur40 - fix an error code in sur40_probe()
perf intel-pt: Fix missing CYC processing in PSB
perf test: Fix unaligned access in sample parsing test
Input: elo - fix an error code in elo_connect()
sparc64: only select COMPAT_BINFMT_ELF if BINFMT_ELF is set
misc: eeprom_93xx46: Fix module alias to enable module autoprobe
misc: eeprom_93xx46: Add module alias to avoid breaking support for non device tree users
pwm: rockchip: rockchip_pwm_probe(): Remove superfluous clk_unprepare()
VMCI: Use set_page_dirty_lock() when unregistering guest memory
PCI: Align checking of syscall user config accessors
drm/msm/dsi: Correct io_start for MSM8994 (20nm PHY)
ext4: fix potential htree index checksum corruption
regmap: sdw: use _no_pm functions in regmap_read/write
i40e: Fix flow for IPv6 next header (extension header)
i40e: Add zero-initialization of AQ command structures
i40e: Fix overwriting flow control settings during driver loading
i40e: Fix VFs not created
i40e: Fix add TC filter for IPv6
net/mlx4_core: Add missed mlx4_free_cmd_mailbox()
vxlan: move debug check after netdev unregister
ocfs2: fix a use after free on error
mm/memory.c: fix potential pte_unmap_unlock pte error
mm/hugetlb: fix potential double free in hugetlb_register_node() error path
r8169: fix jumbo packet handling on RTL8168e
arm64: Add missing ISB after invalidating TLB in __primary_switch
i2c: brcmstb: Fix brcmstd_send_i2c_cmd condition
mm/rmap: fix potential pte_unmap on an not mapped pte
scsi: bnx2fc: Fix Kconfig warning & CNIC build errors
blk-settings: align max_sectors on "logical_block_size" boundary
ACPI: property: Fix fwnode string properties matching
ACPI: configfs: add missing check after configfs_register_default_group()
HID: wacom: Ignore attempts to overwrite the touch_max value from HID
Input: raydium_ts_i2c - do not send zero length
Input: xpad - add support for PowerA Enhanced Wired Controller for Xbox Series X|S
Input: joydev - prevent potential read overflow in ioctl
Input: i8042 - add ASUS Zenbook Flip to noselftest list
USB: serial: option: update interface mapping for ZTE P685M
usb: musb: Fix runtime PM race in musb_queue_resume_work
usb: dwc3: gadget: Fix setting of DEPCFG.bInterval_m1
usb: dwc3: gadget: Fix dep->interval for fullspeed interrupt
USB: serial: ftdi_sio: fix FTX sub-integer prescaler
USB: serial: mos7840: fix error code in mos7840_write()
USB: serial: mos7720: fix error code in mos7720_write()
ALSA: hda/realtek: modify EAPD in the ALC886
tpm_tis: Fix check_locality for correct locality acquisition
tpm_tis: Clean up locality release
KEYS: trusted: Fix migratable=1 failing
btrfs: abort the transaction if we fail to inc ref in btrfs_copy_root
btrfs: fix reloc root leak with 0 ref reloc roots on recovery
btrfs: fix extent buffer leak on failure to copy root
crypto: arm64/sha - add missing module aliases
crypto: sun4i-ss - checking sg length is not sufficient
crypto: sun4i-ss - handle BigEndian for cipher
seccomp: Add missing return in non-void function
misc: rtsx: init of rts522a add OCP power off when no card is present
drivers/misc/vmw_vmci: restrict too big queue size in qp_host_alloc_queue
pstore: Fix typo in compression option name
dts64: mt7622: fix slow sd card access
staging/mt7621-dma: mtk-hsdma.c->hsdma-mt7621.c
staging: gdm724x: Fix DMA from stack
staging: rtl8188eu: Add Edimax EW-7811UN V2 to device table
media: ipu3-cio2: Fix mbus_code processing in cio2_subdev_set_fmt()
x86/reboot: Force all cpus to exit VMX root if VMX is supported
floppy: reintroduce O_NDELAY fix
arm64: uprobe: Return EOPNOTSUPP for AARCH32 instruction probing
watchdog: mei_wdt: request stop on unregister
mtd: spi-nor: hisi-sfc: Put child node np on error path
fs/affs: release old buffer head on error path
seq_file: document how per-entry resources are managed.
x86: fix seq_file iteration for pat/memtype.c
hugetlb: fix copy_huge_page_from_user contig page struct assumption
libnvdimm/dimm: Avoid race between probe and available_slots_show()
arm64: Extend workaround for erratum 1024718 to all versions of Cortex-A55
module: Ignore _GLOBAL_OFFSET_TABLE_ when warning for undefined symbols
mmc: sdhci-esdhc-imx: fix kernel panic when remove module
gpio: pcf857x: Fix missing first interrupt
printk: fix deadlock when kernel panic
cpufreq: intel_pstate: Get per-CPU max freq via MSR_HWP_CAPABILITIES if available
f2fs: fix out-of-repair __setattr_copy()
sparc32: fix a user-triggerable oops in clear_user()
gfs2: Don't skip dlm unlock if glock has an lvb
dm: fix deadlock when swapping to encrypted device
dm era: Recover committed writeset after crash
dm era: Verify the data block size hasn't changed
dm era: Fix bitset memory leaks
dm era: Use correct value size in equality function of writeset tree
dm era: Reinitialize bitset cache before digesting a new writeset
dm era: only resize metadata in preresume
icmp: introduce helper for nat'd source address in network device context
icmp: allow icmpv6_ndo_send to work with CONFIG_IPV6=n
gtp: use icmp_ndo_send helper
sunvnet: use icmp_ndo_send helper
xfrm: interface: use icmp_ndo_send helper
ipv6: icmp6: avoid indirect call for icmpv6_send()
ipv6: silence compilation warning for non-IPV6 builds
net: icmp: pass zeroed opts from icmp{,v6}_ndo_send before sending
dm era: Update in-core bitset after committing the metadata
net: qrtr: Fix memory leak in qrtr_tun_open
ARM: dts: aspeed: Add LCLK to lpc-snoop
Linux 4.19.178
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I8c07c10dd29a1233f238b533622d7b32bd22bdb0
commit 7018c897c2f243d4b5f1b94bc6b4831a7eab80fb upstream
Richard reports that the following test:
(while true; do
cat /sys/bus/nd/devices/nmem*/available_slots 2>&1 > /dev/null
done) &
while true; do
for i in $(seq 0 4); do
echo nmem$i > /sys/bus/nd/drivers/nvdimm/bind
done
for i in $(seq 0 4); do
echo nmem$i > /sys/bus/nd/drivers/nvdimm/unbind
done
done
...fails with a crash signature like:
divide error: 0000 [#1] SMP KASAN PTI
RIP: 0010:nd_label_nfree+0x134/0x1a0 [libnvdimm]
[..]
Call Trace:
available_slots_show+0x4e/0x120 [libnvdimm]
dev_attr_show+0x42/0x80
? memset+0x20/0x40
sysfs_kf_seq_show+0x218/0x410
The root cause is that available_slots_show() consults driver-data, but
fails to synchronize against device-unbind setting up a TOCTOU race to
access uninitialized memory.
Validate driver-data under the device-lock.
Fixes: 4d88a97aa9 ("libnvdimm, nvdimm: dimm driver and base libnvdimm device-driver infrastructure")
Cc: <stable@vger.kernel.org>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Ira Weiny <ira.weiny@intel.com>
Cc: Coly Li <colyli@suse.com>
Reported-by: Richard Palethorpe <rpalethorpe@suse.com>
Acked-by: Richard Palethorpe <rpalethorpe@suse.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
[sudip: use device_lock()]
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge 4.19.164 into android-4.19-stable
Changes in 4.19.164
Kbuild: do not emit debug info for assembly with LLVM_IAS=1
x86/lib: Change .weak to SYM_FUNC_START_WEAK for arch/x86/lib/mem*_64.S
spi: bcm2835aux: Fix use-after-free on unbind
spi: bcm2835aux: Restore err assignment in bcm2835aux_spi_probe
iwlwifi: pcie: limit memory read spin time
arm64: dts: rockchip: Assign a fixed index to mmc devices on rk3399 boards.
iwlwifi: mvm: fix kernel panic in case of assert during CSA
powerpc: Drop -me200 addition to build flags
ARC: stack unwinding: don't assume non-current task is sleeping
scsi: ufs: Make sure clk scaling happens only when HBA is runtime ACTIVE
irqchip/gic-v3-its: Unconditionally save/restore the ITS state on suspend
soc: fsl: dpio: Get the cpumask through cpumask_of(cpu)
platform/x86: thinkpad_acpi: Do not report SW_TABLET_MODE on Yoga 11e
platform/x86: thinkpad_acpi: Add BAT1 is primary battery quirk for Thinkpad Yoga 11e 4th gen
platform/x86: acer-wmi: add automatic keyboard background light toggle key as KEY_LIGHTS_TOGGLE
platform/x86: intel-vbtn: Support for tablet mode on HP Pavilion 13 x360 PC
Input: cm109 - do not stomp on control URB
Input: i8042 - add Acer laptops to the i8042 reset list
pinctrl: amd: remove debounce filter setting in IRQ type setting
mmc: block: Fixup condition for CMD13 polling for RPMB requests
kbuild: avoid static_assert for genksyms
scsi: be2iscsi: Revert "Fix a theoretical leak in beiscsi_create_eqs()"
x86/mm/mem_encrypt: Fix definition of PMD_FLAGS_DEC_WP
x86/membarrier: Get rid of a dubious optimization
x86/apic/vector: Fix ordering in vector assignment
compiler.h: fix barrier_data() on clang
PCI: qcom: Add missing reset for ipq806x
mac80211: mesh: fix mesh_pathtbl_init() error path
net: stmmac: free tx skb buffer in stmmac_resume()
tcp: select sane initial rcvq_space.space for big MSS
tcp: fix cwnd-limited bug for TSO deferral where we send nothing
net/mlx4_en: Avoid scheduling restart task if it is already running
lan743x: fix for potential NULL pointer dereference with bare card
net/mlx4_en: Handle TX error CQE
net: stmmac: delete the eee_ctrl_timer after napi disabled
net: stmmac: dwmac-meson8b: fix mask definition of the m250_sel mux
net: bridge: vlan: fix error return code in __vlan_add()
ktest.pl: If size of log is too big to email, email error message
USB: dummy-hcd: Fix uninitialized array use in init()
USB: add RESET_RESUME quirk for Snapscan 1212
ALSA: usb-audio: Fix potential out-of-bounds shift
ALSA: usb-audio: Fix control 'access overflow' errors from chmap
xhci: Give USB2 ports time to enter U3 in bus suspend
USB: UAS: introduce a quirk to set no_write_same
USB: sisusbvga: Make console support depend on BROKEN
ALSA: pcm: oss: Fix potential out-of-bounds shift
serial: 8250_omap: Avoid FIFO corruption caused by MDR1 access
drm/xen-front: Fix misused IS_ERR_OR_NULL checks
drm: fix drm_dp_mst_port refcount leaks in drm_dp_mst_allocate_vcpi
arm64: lse: fix LSE atomics with LLVM's integrated assembler
arm64: lse: Fix LSE atomics with LLVM
arm64: Change .weak to SYM_FUNC_START_WEAK_PI for arch/arm64/lib/mem*.S
x86/resctrl: Remove unused struct mbm_state::chunks_bw
x86/resctrl: Fix incorrect local bandwidth when mba_sc is enabled
pinctrl: merrifield: Set default bias in case no particular value given
pinctrl: baytrail: Avoid clearing debounce value when turning it off
ARM: dts: sun8i: v3s: fix GIC node memory range
gpio: mvebu: fix potential user-after-free on probe
scsi: bnx2i: Requires MMU
xsk: Fix xsk_poll()'s return type
can: softing: softing_netdev_open(): fix error handling
clk: renesas: r9a06g032: Drop __packed for portability
block: factor out requeue handling from dispatch code
netfilter: x_tables: Switch synchronization to RCU
gpio: eic-sprd: break loop when getting NULL device resource
selftests/bpf/test_offload.py: Reset ethtool features after failed setting
RDMA/cm: Fix an attempt to use non-valid pointer when cleaning timewait
ixgbe: avoid premature Rx buffer reuse
drm/tegra: replace idr_init() by idr_init_base()
kernel/cpu: add arch override for clear_tasks_mm_cpumask() mm handling
drm/tegra: sor: Disable clocks on error in tegra_sor_init()
arm64: syscall: exit userspace before unmasking exceptions
vxlan: Add needed_headroom for lower device
vxlan: Copy needed_tailroom from lowerdev
scsi: mpt3sas: Increase IOCInit request timeout to 30s
dm table: Remove BUG_ON(in_interrupt())
soc/tegra: fuse: Fix index bug in get_process_id
USB: serial: option: add interface-number sanity check to flag handling
USB: gadget: f_acm: add support for SuperSpeed Plus
USB: gadget: f_midi: setup SuperSpeed Plus descriptors
usb: gadget: f_fs: Re-use SS descriptors for SuperSpeedPlus
USB: gadget: f_rndis: fix bitrate for SuperSpeed and above
usb: chipidea: ci_hdrc_imx: Pass DISABLE_DEVICE_STREAMING flag to imx6ul
ARM: dts: exynos: fix roles of USB 3.0 ports on Odroid XU
ARM: dts: exynos: fix USB 3.0 VBUS control and over-current pins on Exynos5410
ARM: dts: exynos: fix USB 3.0 pins supply being turned off on Odroid XU
coresight: tmc-etr: Check if page is valid before dma_map_page()
scsi: megaraid_sas: Check user-provided offsets
HID: i2c-hid: add Vero K147 to descriptor override
serial_core: Check for port state when tty is in error state
Bluetooth: Fix slab-out-of-bounds read in hci_le_direct_adv_report_evt()
quota: Sanity-check quota file headers on load
media: msi2500: assign SPI bus number dynamically
crypto: af_alg - avoid undefined behavior accessing salg_name
md: fix a warning caused by a race between concurrent md_ioctl()s
perf cs-etm: Change tuple from traceID-CPU# to traceID-metadata
perf cs-etm: Move definition of 'traceid_list' global variable from header file
drm/gma500: fix double free of gma_connector
drm/tve200: Fix handling of platform_get_irq() error
soc: renesas: rmobile-sysc: Fix some leaks in rmobile_init_pm_domains()
soc: mediatek: Check if power domains can be powered on at boot time
soc: qcom: geni: More properly switch to DMA mode
RDMA/bnxt_re: Set queue pair state when being queried
selinux: fix error initialization in inode_doinit_with_dentry()
ARM: dts: aspeed: s2600wf: Fix VGA memory region location
RDMA/rxe: Compute PSN windows correctly
x86/mm/ident_map: Check for errors from ident_pud_init()
ARM: p2v: fix handling of LPAE translation in BE mode
x86/apic: Fix x2apic enablement without interrupt remapping
sched/deadline: Fix sched_dl_global_validate()
sched: Reenable interrupts in do_sched_yield()
crypto: talitos - Endianess in current_desc_hdr()
crypto: talitos - Fix return type of current_desc_hdr()
crypto: inside-secure - Fix sizeof() mismatch
powerpc/64: Set up a kernel stack for secondaries before cpu_restore()
spi: img-spfi: fix reference leak in img_spfi_resume
drm/msm/dsi_pll_10nm: restore VCO rate during restore_state
ASoC: pcm: DRAIN support reactivation
selinux: fix inode_doinit_with_dentry() LABEL_INVALID error handling
arm64: dts: exynos: Include common syscon restart/poweroff for Exynos7
arm64: dts: exynos: Correct psci compatible used on Exynos7
Bluetooth: Fix null pointer dereference in hci_event_packet()
Bluetooth: hci_h5: fix memory leak in h5_close
spi: spi-ti-qspi: fix reference leak in ti_qspi_setup
spi: tegra20-slink: fix reference leak in slink ops of tegra20
spi: tegra20-sflash: fix reference leak in tegra_sflash_resume
spi: tegra114: fix reference leak in tegra spi ops
spi: bcm63xx-hsspi: fix missing clk_disable_unprepare() on error in bcm63xx_hsspi_resume
mwifiex: fix mwifiex_shutdown_sw() causing sw reset failure
ASoC: wm8998: Fix PM disable depth imbalance on error
ASoC: arizona: Fix a wrong free in wm8997_probe
RDMa/mthca: Work around -Wenum-conversion warning
MIPS: BCM47XX: fix kconfig dependency bug for BCM47XX_BCMA
crypto: qat - fix status check in qat_hal_put_rel_rd_xfer()
staging: greybus: codecs: Fix reference counter leak in error handling
staging: gasket: interrupt: fix the missed eventfd_ctx_put() in gasket_interrupt.c
media: tm6000: Fix sizeof() mismatches
media: mtk-vcodec: add missing put_device() call in mtk_vcodec_release_dec_pm()
ASoC: meson: fix COMPILE_TEST error
scsi: core: Fix VPD LUN ID designator priorities
media: solo6x10: fix missing snd_card_free in error handling case
video: fbdev: atmel_lcdfb: fix return error code in atmel_lcdfb_of_init()
drm/omap: dmm_tiler: fix return error code in omap_dmm_probe()
Input: ads7846 - fix race that causes missing releases
Input: ads7846 - fix integer overflow on Rt calculation
Input: ads7846 - fix unaligned access on 7845
usb/max3421: fix return error code in max3421_probe()
spi: mxs: fix reference leak in mxs_spi_probe
powerpc/feature: Fix CPU_FTRS_ALWAYS by removing CPU_FTRS_GENERIC_32
crypto: crypto4xx - Replace bitwise OR with logical OR in crypto4xx_build_pd
crypto: omap-aes - Fix PM disable depth imbalance in omap_aes_probe
spi: fix resource leak for drivers without .remove callback
soc: ti: knav_qmss: fix reference leak in knav_queue_probe
soc: ti: Fix reference imbalance in knav_dma_probe
drivers: soc: ti: knav_qmss_queue: Fix error return code in knav_queue_probe
Input: omap4-keypad - fix runtime PM error handling
RDMA/cxgb4: Validate the number of CQEs
memstick: fix a double-free bug in memstick_check
ARM: dts: at91: sama5d4_xplained: add pincontrol for USB Host
ARM: dts: at91: sama5d3_xplained: add pincontrol for USB Host
orinoco: Move context allocation after processing the skb
cw1200: fix missing destroy_workqueue() on error in cw1200_init_common
dmaengine: mv_xor_v2: Fix error return code in mv_xor_v2_probe()
media: siano: fix memory leak of debugfs members in smsdvb_hotplug
platform/x86: mlx-platform: Remove PSU EEPROM from default platform configuration
platform/x86: mlx-platform: Remove PSU EEPROM from MSN274x platform configuration
samples: bpf: Fix lwt_len_hist reusing previous BPF map
mips: cdmm: fix use-after-free in mips_cdmm_bus_discover
media: max2175: fix max2175_set_csm_mode() error code
slimbus: qcom-ngd-ctrl: Avoid sending power requests without QMI
HSI: omap_ssi: Don't jump to free ID in ssi_add_controller()
ARM: dts: Remove non-existent i2c1 from 98dx3236
arm64: dts: rockchip: Set dr_mode to "host" for OTG on rk3328-roc-cc
power: supply: axp288_charger: Fix HP Pavilion x2 10 DMI matching
power: supply: bq24190_charger: fix reference leak
genirq/irqdomain: Don't try to free an interrupt that has no mapping
PCI: Bounds-check command-line resource alignment requests
PCI: Fix overflow in command-line resource alignment requests
PCI: iproc: Fix out-of-bound array accesses
arm64: dts: meson: fix spi-max-frequency on Khadas VIM2
ARM: dts: at91: at91sam9rl: fix ADC triggers
platform/x86: dell-smbios-base: Fix error return code in dell_smbios_init
ath10k: Fix the parsing error in service available event
ath10k: Fix an error handling path
ath10k: Release some resources in an error handling path
NFSv4.2: condition READDIR's mask for security label based on LSM state
SUNRPC: xprt_load_transport() needs to support the netid "rdma6"
lockd: don't use interval-based rebinding over TCP
NFS: switch nfsiod to be an UNBOUND workqueue.
vfio-pci: Use io_remap_pfn_range() for PCI IO memory
media: saa7146: fix array overflow in vidioc_s_audio()
clocksource/drivers/cadence_ttc: Fix memory leak in ttc_setup_clockevent()
ARM: dts: at91: sama5d2: map securam as device
pinctrl: falcon: add missing put_device() call in pinctrl_falcon_probe()
arm64: dts: rockchip: Fix UART pull-ups on rk3328
memstick: r592: Fix error return in r592_probe()
net/mlx5: Properly convey driver version to firmware
ASoC: jz4740-i2s: add missed checks for clk_get()
dm ioctl: fix error return code in target_message
clocksource/drivers/arm_arch_timer: Correct fault programming of CNTKCTL_EL1.EVNTI
cpufreq: highbank: Add missing MODULE_DEVICE_TABLE
cpufreq: mediatek: Add missing MODULE_DEVICE_TABLE
cpufreq: st: Add missing MODULE_DEVICE_TABLE
cpufreq: loongson1: Add missing MODULE_ALIAS
cpufreq: scpi: Add missing MODULE_ALIAS
scsi: qedi: Fix missing destroy_workqueue() on error in __qedi_probe
scsi: pm80xx: Fix error return in pm8001_pci_probe()
seq_buf: Avoid type mismatch for seq_buf_init
scsi: fnic: Fix error return code in fnic_probe()
platform/x86: mlx-platform: Fix item counter assignment for MSN2700, MSN24xx systems
powerpc/pseries/hibernation: drop pseries_suspend_begin() from suspend ops
powerpc/pseries/hibernation: remove redundant cacheinfo update
usb: ehci-omap: Fix PM disable depth umbalance in ehci_hcd_omap_probe
usb: oxu210hp-hcd: Fix memory leak in oxu_create
speakup: fix uninitialized flush_lock
nfsd: Fix message level for normal termination
nfs_common: need lock during iterate through the list
x86/kprobes: Restore BTF if the single-stepping is cancelled
bus: fsl-mc: fix error return code in fsl_mc_object_allocate()
clk: tegra: Fix duplicated SE clock entry
extcon: max77693: Fix modalias string
mac80211: don't set set TDLS STA bandwidth wider than possible
ASoC: wm_adsp: remove "ctl" from list on error in wm_adsp_create_control()
irqchip/alpine-msi: Fix freeing of interrupts on allocation error path
watchdog: sirfsoc: Add missing dependency on HAS_IOMEM
watchdog: sprd: remove watchdog disable from resume fail path
watchdog: sprd: check busy bit before new loading rather than after that
watchdog: Fix potential dereferencing of null pointer
um: Monitor error events in IRQ controller
um: tty: Fix handling of close in tty lines
um: chan_xterm: Fix fd leak
nfc: s3fwrn5: Release the nfc firmware
powerpc/ps3: use dma_mapping_error()
checkpatch: fix unescaped left brace
net: bcmgenet: Fix a resource leak in an error handling path in the probe functin
net: allwinner: Fix some resources leak in the error handling path of the probe and in the remove function
net: korina: fix return value
libnvdimm/label: Return -ENXIO for no slot in __blk_label_update
watchdog: qcom: Avoid context switch in restart handler
watchdog: coh901327: add COMMON_CLK dependency
clk: ti: Fix memleak in ti_fapll_synth_setup
pwm: zx: Add missing cleanup in error path
pwm: lp3943: Dynamically allocate PWM chip base
perf record: Fix memory leak when using '--user-regs=?' to list registers
qlcnic: Fix error code in probe
clk: s2mps11: Fix a resource leak in error handling paths in the probe function
clk: sunxi-ng: Make sure divider tables have sentinel
kconfig: fix return value of do_error_if()
ARM: sunxi: Add machine match for the Allwinner V3 SoC
cfg80211: initialize rekey_data
fix namespaced fscaps when !CONFIG_SECURITY
lwt: Disable BH too in run_lwt_bpf()
Input: cros_ec_keyb - send 'scancodes' in addition to key events
Input: goodix - add upside-down quirk for Teclast X98 Pro tablet
media: gspca: Fix memory leak in probe
media: sunxi-cir: ensure IR is handled when it is continuous
media: netup_unidvb: Don't leak SPI master in probe error path
media: ipu3-cio2: Remove traces of returned buffers
media: ipu3-cio2: Return actual subdev format
media: ipu3-cio2: Serialise access to pad format
media: ipu3-cio2: Validate mbus format in setting subdev format
media: ipu3-cio2: Make the field on subdev format V4L2_FIELD_NONE
Input: cyapa_gen6 - fix out-of-bounds stack access
ALSA: hda/ca0132 - Change Input Source enum strings.
PM: ACPI: PCI: Drop acpi_pm_set_bridge_wakeup()
Revert "ACPI / resources: Use AE_CTRL_TERMINATE to terminate resources walks"
ACPI: PNP: compare the string length in the matching_id()
ALSA: hda: Fix regressions on clear and reconfig sysfs
ALSA: hda/realtek - Enable headset mic of ASUS X430UN with ALC256
ALSA: hda/realtek - Enable headset mic of ASUS Q524UQK with ALC255
ALSA: pcm: oss: Fix a few more UBSAN fixes
ALSA: hda/realtek: Add quirk for MSI-GP73
ALSA: hda/realtek: Apply jack fixup for Quanta NL3
ALSA: usb-audio: Add VID to support native DSD reproduction on FiiO devices
ALSA: usb-audio: Disable sample read check if firmware doesn't give back
s390/smp: perform initial CPU reset also for SMT siblings
s390/kexec_file: fix diag308 subcode when loading crash kernel
s390/dasd: fix hanging device offline processing
s390/dasd: prevent inconsistent LCU device data
s390/dasd: fix list corruption of pavgroup group list
s390/dasd: fix list corruption of lcu list
staging: comedi: mf6x4: Fix AI end-of-conversion detection
powerpc/perf: Exclude kernel samples while counting events in user space.
crypto: ecdh - avoid unaligned accesses in ecdh_set_secret()
EDAC/amd64: Fix PCI component registration
USB: serial: mos7720: fix parallel-port state restore
USB: serial: digi_acceleport: fix write-wakeup deadlocks
USB: serial: keyspan_pda: fix dropped unthrottle interrupts
USB: serial: keyspan_pda: fix write deadlock
USB: serial: keyspan_pda: fix stalled writes
USB: serial: keyspan_pda: fix write-wakeup use-after-free
USB: serial: keyspan_pda: fix tx-unthrottle use-after-free
USB: serial: keyspan_pda: fix write unthrottling
ext4: fix a memory leak of ext4_free_data
ext4: fix deadlock with fs freezing and EA inodes
KVM: arm64: Introduce handling of AArch32 TTBCR2 traps
ARM: dts: pandaboard: fix pinmux for gpio user button of Pandaboard ES
ARM: dts: at91: sama5d2: fix CAN message ram offset and size
powerpc: Fix incorrect stw{, ux, u, x} instructions in __set_pte_at
powerpc/rtas: Fix typo of ibm,open-errinjct in RTAS filter
powerpc/xmon: Change printk() to pr_cont()
powerpc/powernv/memtrace: Don't leak kernel memory to user space
powerpc/powernv/memtrace: Fix crashing the kernel when enabling concurrently
ima: Don't modify file descriptor mode on the fly
ceph: fix race in concurrent __ceph_remove_cap invocations
SMB3: avoid confusing warning message on mount to Azure
SMB3.1.1: do not log warning message if server doesn't populate salt
ubifs: wbuf: Don't leak kernel memory to flash
jffs2: Fix GC exit abnormally
jfs: Fix array index bounds check in dbAdjTree
drm/dp_aux_dev: check aux_dev before use in drm_dp_aux_dev_get_by_minor()
spi: spi-sh: Fix use-after-free on unbind
spi: davinci: Fix use-after-free on unbind
spi: pic32: Don't leak DMA channels in probe error path
spi: rb4xx: Don't leak SPI master in probe error path
spi: sc18is602: Don't leak SPI master in probe error path
spi: st-ssc4: Fix unbalanced pm_runtime_disable() in probe error path
spi: mt7621: fix missing clk_disable_unprepare() on error in mt7621_spi_probe
soc: qcom: smp2p: Safely acquire spinlock without IRQs
mtd: spinand: Fix OOB read
mtd: parser: cmdline: Fix parsing of part-names with colons
mtd: rawnand: qcom: Fix DMA sync on FLASH_STATUS register read
scsi: lpfc: Fix invalid sleeping context in lpfc_sli4_nvmet_alloc()
scsi: lpfc: Re-fix use after free in lpfc_rq_buf_free()
iio: buffer: Fix demux update
iio: adc: rockchip_saradc: fix missing clk_disable_unprepare() on error in rockchip_saradc_resume
iio:light:rpr0521: Fix timestamp alignment and prevent data leak.
iio:light:st_uvis25: Fix timestamp alignment and prevent data leak.
iio:pressure:mpl3115: Force alignment of buffer
iio:imu:bmi160: Fix too large a buffer.
md/cluster: block reshape with remote resync job
md/cluster: fix deadlock when node is doing resync job
pinctrl: sunxi: Always call chained_irq_{enter, exit} in sunxi_pinctrl_irq_handler
clk: mvebu: a3700: fix the XTAL MODE pin to MPP1_9
xen-blkback: set ring->xenblkd to NULL after kthread_stop()
xen/xenbus: Allow watches discard events before queueing
xen/xenbus: Add 'will_handle' callback support in xenbus_watch_path()
xen/xenbus/xen_bus_type: Support will_handle watch callback
xen/xenbus: Count pending messages for each watch
xenbus/xenbus_backend: Disallow pending watch messages
libnvdimm/namespace: Fix reaping of invalidated block-window-namespace labels
platform/x86: intel-vbtn: Allow switch events on Acer Switch Alpha 12
PCI: Fix pci_slot_release() NULL pointer dereference
platform/x86: mlx-platform: remove an unused variable
Linux 4.19.164
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I8e2d24b45393ee2360186893d4e578e20156c7f1
commit 2dd2a1740ee19cd2636d247276cf27bfa434b0e2 upstream.
A recent change to ndctl to attempt to reconfigure namespaces in place
uncovered a label accounting problem in block-window-type namespaces.
The ndctl "create.sh" test is able to trigger this signature:
WARNING: CPU: 34 PID: 9167 at drivers/nvdimm/label.c:1100 __blk_label_update+0x9a3/0xbc0 [libnvdimm]
[..]
RIP: 0010:__blk_label_update+0x9a3/0xbc0 [libnvdimm]
[..]
Call Trace:
uuid_store+0x21b/0x2f0 [libnvdimm]
kernfs_fop_write+0xcf/0x1c0
vfs_write+0xcc/0x380
ksys_write+0x68/0xe0
When allocated capacity for a namespace is renamed (new UUID) the labels
with the old UUID need to be deleted. The ndctl behavior to always
destroy namespaces on reconfiguration hid this problem.
The immediate impact of this bug is limited since block-window-type
namespaces only seem to exist in the specification and not in any
shipping products. However, the label handling code is being reused for
other technologies like CXL region labels, so there is a benefit to
making sure both vertical labels sets (block-window) and horizontal
label sets (pmem) have a functional reference implementation in
libnvdimm.
Fixes: c4703ce11c23 ("libnvdimm/namespace: Fix label tracking error")
Cc: <stable@vger.kernel.org>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 4c46764733c85b82c07e9559b39da4d00a7dd659 ]
Forget to set error code when nd_label_alloc_slot failed, and we
add it to avoid overwritten error code.
Fixes: 0ba1c63489 ("libnvdimm: write blk label set")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20201205115056.2076523-1-zhangqilong3@huawei.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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Merge 4.19.127 into android-4.19-stable
Changes in 4.19.127
Revert "cgroup: Add memory barriers to plug cgroup_rstat_updated() race window"
libnvdimm: Fix endian conversion issues
mm: Fix mremap not considering huge pmd devmap
HID: sony: Fix for broken buttons on DS3 USB dongles
HID: i2c-hid: add Schneider SCL142ALM to descriptor override
p54usb: add AirVasT USB stick device-id
kernel/relay.c: handle alloc_percpu returning NULL in relay_open
mmc: fix compilation of user API
scsi: ufs: Release clock if DMA map fails
net: dsa: mt7530: set CPU port to fallback mode
airo: Fix read overflows sending packets
drm/i915: fix port checks for MST support on gen >= 11
scsi: hisi_sas: Check sas_port before using it
powerpc/powernv: Avoid re-registration of imc debugfs directory
spi: dw: use "smp_mb()" to avoid sending spi data error
s390/ftrace: save traced function caller
ARC: Fix ICCM & DCCM runtime size checks
ARC: [plat-eznps]: Restrict to CONFIG_ISA_ARCOMPACT
evm: Fix RCU list related warnings
i2c: altera: Fix race between xfer_msg and isr thread
x86/mmiotrace: Use cpumask_available() for cpumask_var_t variables
net: bmac: Fix read of MAC address from ROM
drm/edid: Add Oculus Rift S to non-desktop list
s390/mm: fix set_huge_pte_at() for empty ptes
null_blk: return error for invalid zone size
net/ethernet/freescale: rework quiesce/activate for ucc_geth
net: ethernet: stmmac: Enable interface clocks on probe for IPQ806x
net: smsc911x: Fix runtime PM imbalance on error
Linux 4.19.127
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I0ba65b19a1f1d3d1767e8f5cccef4b2f320cdd59
commit 86aa66687442ef45909ff9814b82b4d2bb892294 upstream.
nd_label->dpa issue was observed when trying to enable the namespace created
with little-endian kernel on a big-endian kernel. That made me run
`sparse` on the rest of the code and other changes are the result of that.
Fixes: d9b83c7569 ("libnvdimm, btt: rework error clearing")
Fixes: 9dedc73a4658 ("libnvdimm/btt: Fix LBA masking during 'free list' population")
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Link: https://lore.kernel.org/r/20190809074726.27815-1-aneesh.kumar@linux.ibm.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge 4.19.125 into android-4.19-stable
Changes in 4.19.125
x86/uaccess, ubsan: Fix UBSAN vs. SMAP
ubsan: build ubsan.c more conservatively
i2c: dev: Fix the race between the release of i2c_dev and cdev
KVM: SVM: Fix potential memory leak in svm_cpu_init()
riscv: set max_pfn to the PFN of the last page
ima: Set file->f_mode instead of file->f_flags in ima_calc_file_hash()
evm: Check also if *tfm is an error pointer in init_desc()
ima: Fix return value of ima_write_policy()
mtd: spinand: Propagate ECC information to the MTD structure
fix multiplication overflow in copy_fdtable()
ubifs: remove broken lazytime support
iommu/amd: Fix over-read of ACPI UID from IVRS table
i2c: mux: demux-pinctrl: Fix an error handling path in 'i2c_demux_pinctrl_probe()'
ubi: Fix seq_file usage in detailed_erase_block_info debugfs file
gcc-common.h: Update for GCC 10
HID: multitouch: add eGalaxTouch P80H84 support
HID: alps: Add AUI1657 device ID
HID: alps: ALPS_1657 is too specific; use U1_UNICORN_LEGACY instead
scsi: qla2xxx: Fix hang when issuing nvme disconnect-all in NPIV
scsi: qla2xxx: Delete all sessions before unregister local nvme port
configfs: fix config_item refcnt leak in configfs_rmdir()
vhost/vsock: fix packet delivery order to monitoring devices
aquantia: Fix the media type of AQC100 ethernet controller in the driver
component: Silence bind error on -EPROBE_DEFER
scsi: ibmvscsi: Fix WARN_ON during event pool release
HID: i2c-hid: reset Synaptics SYNA2393 on resume
x86/apic: Move TSC deadline timer debug printk
gtp: set NLM_F_MULTI flag in gtp_genl_dump_pdp()
HID: quirks: Add HID_QUIRK_NO_INIT_REPORTS quirk for Dell K12A keyboard-dock
ceph: fix double unlock in handle_cap_export()
stmmac: fix pointer check after utilization in stmmac_interrupt
USB: core: Fix misleading driver bug report
platform/x86: asus-nb-wmi: Do not load on Asus T100TA and T200TA
ARM: futex: Address build warning
padata: Replace delayed timer with immediate workqueue in padata_reorder
padata: initialize pd->cpu with effective cpumask
padata: purge get_cpu and reorder_via_wq from padata_do_serial
ALSA: iec1712: Initialize STDSP24 properly when using the model=staudio option
ALSA: pcm: fix incorrect hw_base increase
ALSA: hda/realtek - Fix silent output on Gigabyte X570 Aorus Xtreme
ALSA: hda/realtek - Add more fixup entries for Clevo machines
drm/etnaviv: fix perfmon domain interation
apparmor: Fix use-after-free in aa_audit_rule_init
apparmor: fix potential label refcnt leak in aa_change_profile
apparmor: Fix aa_label refcnt leak in policy_update
dmaengine: tegra210-adma: Fix an error handling path in 'tegra_adma_probe()'
dmaengine: owl: Use correct lock in owl_dma_get_pchan()
drm/i915/gvt: Init DPLL/DDI vreg for virtual display instead of inheritance.
powerpc: Remove STRICT_KERNEL_RWX incompatibility with RELOCATABLE
powerpc/64s: Disable STRICT_KERNEL_RWX
nfit: Add Hyper-V NVDIMM DSM command set to white list
libnvdimm/btt: Remove unnecessary code in btt_freelist_init
libnvdimm/btt: Fix LBA masking during 'free list' population
staging: most: core: replace strcpy() by strscpy()
thunderbolt: Drop duplicated get_switch_at_route()
media: fdp1: Fix R-Car M3-N naming in debug message
Revert "net/ibmvnic: Fix EOI when running in XIVE mode"
net: bcmgenet: code movement
net: bcmgenet: abort suspend on error
cxgb4: free mac_hlist properly
cxgb4/cxgb4vf: Fix mac_hlist initialization and free
tty: serial: qcom_geni_serial: Fix wrap around of TX buffer
brcmfmac: abort and release host after error
Revert "gfs2: Don't demote a glock until its revokes are written"
staging: iio: ad2s1210: Fix SPI reading
staging: greybus: Fix uninitialized scalar variable
iio: sca3000: Remove an erroneous 'get_device()'
iio: dac: vf610: Fix an error handling path in 'vf610_dac_probe()'
misc: rtsx: Add short delay after exit from ASPM
mei: release me_cl object reference
ipack: tpci200: fix error return code in tpci200_register()
rapidio: fix an error in get_user_pages_fast() error handling
rxrpc: Fix a memory leak in rxkad_verify_response()
x86/unwind/orc: Fix unwind_get_return_address_ptr() for inactive tasks
iio: adc: stm32-adc: Use dma_request_chan() instead dma_request_slave_channel()
iio: adc: stm32-adc: fix device used to request dma
iio: adc: stm32-dfsdm: Use dma_request_chan() instead dma_request_slave_channel()
iio: adc: stm32-dfsdm: fix device used to request dma
rxrpc: Trace discarded ACKs
rxrpc: Fix ack discard
Linux 4.19.125
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I7ef4b874ed2ce4f234e2333c751b5dd401746358
[ Upstream commit 9dedc73a4658ebcc0c9b58c3cb84e9ac80122213 ]
The Linux BTT implementation assumes that log entries will never have
the 'zero' flag set, and indeed it never sets that flag for log entries
itself.
However, the UEFI spec is ambiguous on the exact format of the LBA field
of a log entry, specifically as to whether it should include the
additional flag bits or not. While a zero bit doesn't make sense in the
context of a log entry, other BTT implementations might still have it set.
If an implementation does happen to have it set, we would happily read
it in as the next block to write to for writes. Since a high bit is set,
it pushes the block number out of the range of an 'arena', and we fail
such a write with an EIO.
Follow the robustness principle, and tolerate such implementations by
stripping out the zero flag when populating the free list during
initialization. Additionally, use the same stripped out entries for
detection of incomplete writes and map restoration that happens at this
stage.
Add a sysfs file 'log_zero_flags' that indicates the ability to accept
such a layout to userspace applications. This enables 'ndctl
check-namespace' to recognize whether the kernel is able to handle zero
flags, or whether it should attempt a fix-up under the --repair option.
Cc: Dan Williams <dan.j.williams@intel.com>
Reported-by: Dexuan Cui <decui@microsoft.com>
Reported-by: Pedro d'Aquino Filocre F S Barbuda <pbarbuda@microsoft.com>
Tested-by: Dexuan Cui <decui@microsoft.com>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 2f8c9011151337d0bc106693f272f9bddbccfab2 ]
We call btt_log_read() twice, once to get the 'old' log entry, and again
to get the 'new' entry. However, we have no use for the 'old' entry, so
remove it.
Cc: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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Merge 4.19.118 into android-4.19
Changes in 4.19.118
arm, bpf: Fix offset overflow for BPF_MEM BPF_DW
objtool: Fix switch table detection in .text.unlikely
scsi: sg: add sg_remove_request in sg_common_write
ext4: use non-movable memory for superblock readahead
watchdog: sp805: fix restart handler
arm, bpf: Fix bugs with ALU64 {RSH, ARSH} BPF_K shift by 0
ARM: dts: imx6: Use gpc for FEC interrupt controller to fix wake on LAN.
netfilter: nf_tables: report EOPNOTSUPP on unsupported flags/object type
irqchip/mbigen: Free msi_desc on device teardown
ALSA: hda: Don't release card at firmware loading error
of: unittest: kmemleak on changeset destroy
of: unittest: kmemleak in of_unittest_platform_populate()
of: unittest: kmemleak in of_unittest_overlay_high_level()
of: overlay: kmemleak in dup_and_fixup_symbol_prop()
x86/Hyper-V: Report crash register data or kmsg before running crash kernel
lib/raid6: use vdupq_n_u8 to avoid endianness warnings
video: fbdev: sis: Remove unnecessary parentheses and commented code
rbd: avoid a deadlock on header_rwsem when flushing notifies
rbd: call rbd_dev_unprobe() after unwatching and flushing notifies
xsk: Add missing check on user supplied headroom size
x86/Hyper-V: Unload vmbus channel in hv panic callback
x86/Hyper-V: Free hv_panic_page when fail to register kmsg dump
x86/Hyper-V: Trigger crash enlightenment only once during system crash.
x86/Hyper-V: Report crash register data when sysctl_record_panic_msg is not set
x86/Hyper-V: Report crash data in die() when panic_on_oops is set
clk: at91: usb: continue if clk_hw_round_rate() return zero
power: supply: bq27xxx_battery: Silence deferred-probe error
clk: tegra: Fix Tegra PMC clock out parents
soc: imx: gpc: fix power up sequencing
rtc: 88pm860x: fix possible race condition
NFSv4/pnfs: Return valid stateids in nfs_layout_find_inode_by_stateid()
NFS: direct.c: Fix memory leak of dreq when nfs_get_lock_context fails
s390/cpuinfo: fix wrong output when CPU0 is offline
powerpc/maple: Fix declaration made after definition
s390/cpum_sf: Fix wrong page count in error message
ext4: do not commit super on read-only bdev
um: ubd: Prevent buffer overrun on command completion
cifs: Allocate encryption header through kmalloc
include/linux/swapops.h: correct guards for non_swap_entry()
percpu_counter: fix a data race at vm_committed_as
compiler.h: fix error in BUILD_BUG_ON() reporting
KVM: s390: vsie: Fix possible race when shadowing region 3 tables
x86: ACPI: fix CPU hotplug deadlock
drm/amdkfd: kfree the wrong pointer
NFS: Fix memory leaks in nfs_pageio_stop_mirroring()
f2fs: fix NULL pointer dereference in f2fs_write_begin()
drm/vc4: Fix HDMI mode validation
iommu/vt-d: Fix mm reference leak
ext2: fix empty body warnings when -Wextra is used
ext2: fix debug reference to ext2_xattr_cache
power: supply: axp288_fuel_gauge: Broaden vendor check for Intel Compute Sticks.
libnvdimm: Out of bounds read in __nd_ioctl()
iommu/amd: Fix the configuration of GCR3 table root pointer
f2fs: fix to wait all node page writeback
net: dsa: bcm_sf2: Fix overflow checks
fbdev: potential information leak in do_fb_ioctl()
iio: si1133: read 24-bit signed integer for measurement
tty: evh_bytechan: Fix out of bounds accesses
locktorture: Print ratio of acquisitions, not failures
mtd: spinand: Explicitly use MTD_OPS_RAW to write the bad block marker to OOB
mtd: lpddr: Fix a double free in probe()
mtd: phram: fix a double free issue in error path
KEYS: Don't write out to userspace while holding key semaphore
bpf: fix buggy r0 retval refinement for tracing helpers
Linux 4.19.118
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: Ife34f739f719c332c7b1d22b1832179be6a16800
[ Upstream commit f84afbdd3a9e5e10633695677b95422572f920dc ]
The "cmd" comes from the user and it can be up to 255. It it's more
than the number of bits in long, it results out of bounds read when we
check test_bit(cmd, &cmd_mask). The highest valid value for "cmd" is
ND_CMD_CALL (10) so I added a compare against that.
Fixes: 62232e45f4 ("libnvdimm: control (ioctl) messages for nvdimm_bus and nvdimm devices")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20200225162055.amtosfy7m35aivxg@kili.mountain
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This patch adds virtio-pmem driver for KVM guest.
Guest reads the persistent memory range information from
Qemu over VIRTIO and registers it on nvdimm_bus. It also
creates a nd_region object with the persistent memory
range information so that existing 'nvdimm/pmem' driver
can reserve this into system memory map. This way
'virtio-pmem' driver uses existing functionality of pmem
driver to register persistent memory compatible for DAX
capable filesystems.
This also provides function to perform guest flush over
VIRTIO from 'pmem' driver when userspace performs flush
on DAX memory range.
Signed-off-by: Pankaj Gupta <pagupta@redhat.com>
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jakub Staron <jstaron@google.com>
Tested-by: Jakub Staron <jstaron@google.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
(cherry picked from commit 6e84200c0a2994b991259d19450eee561029bf70)
Bug: 146400078
Bug: 148297388
Change-Id: Ie3457fe184f29984d181bc0afa9267e2567a2caf
Signed-off-by: Alistair Delva <adelva@google.com>
This patch adds functionality to perform flush from guest
to host over VIRTIO. We are registering a callback based
on 'nd_region' type. virtio_pmem driver requires this special
flush function. For rest of the region types we are registering
existing flush function. Report error returned by host fsync
failure to userspace.
Signed-off-by: Pankaj Gupta <pagupta@redhat.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
(cherry picked from commit c5d4355d10d414a96ca870b731756b89d068d57a)
Bug: 146400078
Bug: 148297388
Change-Id: Icf6ff5327b3c74455a4d53d2d37ac7fef7fbda85
Signed-off-by: Alistair Delva <adelva@google.com>
ndctl binaries, v66 and older, mistakenly require the ndbus to have
unique names. If not while enumerating the bus in userspace it drops bus
with similar names. This results in us not listing devices beneath the
bus.
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Tested-by: Vaibhav Jain <vaibhav@linux.ibm.com>
Link: https://lore.kernel.org/r/20190807040029.11344-1-aneesh.kumar@linux.ibm.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
(cherry picked from commit 49bddc73d15c25a68e4294d76fc74519fda984cd)
Bug: 146400078
Bug: 148297388
Change-Id: Ieda4557bbda63e554e2eda6b87d7ba2a6e149e3b
Signed-off-by: Alistair Delva <adelva@google.com>
Remove .owner field if calls are used which set it automatically
Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
(cherry picked from commit 316720b9c2341307b9a17103cdafa1ca9b2fb872)
Bug: 146400078
Bug: 148297388
Change-Id: I16e7543bcb786e20e96ea4250a809bb3b7f1ec32
Signed-off-by: Alistair Delva <adelva@google.com>
[ Upstream commit 4e24e37d5313edca8b4ab86f240c046c731e28d6 ]
drivers/nvdimm/btt.c: In function 'btt_read_pg':
drivers/nvdimm/btt.c:1264:8: warning: variable 'rc' set but not used
[-Wunused-but-set-variable]
int rc;
^~
Add a ratelimited message in case a storm of errors is encountered.
Fixes: d9b83c7569 ("libnvdimm, btt: rework error clearing")
Signed-off-by: Qian Cai <cai@lca.pw>
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Link: https://lore.kernel.org/r/1572530719-32161-1-git-send-email-cai@lca.pw
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit c42adf87e4e7ed77f6ffe288dc90f980d07d68df ]
We do check for a bad block during namespace init and that use
region bad block list. We need to initialize the bad block
for volatile regions for this to work. We also observe a lockdep
warning as below because the lock is not initialized correctly
since we skip bad block init for volatile regions.
INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 2 PID: 1 Comm: swapper/0 Not tainted 5.3.0-rc1-15699-g3dee241c937e #149
Call Trace:
[c0000000f95cb250] [c00000000147dd84] dump_stack+0xe8/0x164 (unreliable)
[c0000000f95cb2a0] [c00000000022ccd8] register_lock_class+0x308/0xa60
[c0000000f95cb3a0] [c000000000229cc0] __lock_acquire+0x170/0x1ff0
[c0000000f95cb4c0] [c00000000022c740] lock_acquire+0x220/0x270
[c0000000f95cb580] [c000000000a93230] badblocks_check+0xc0/0x290
[c0000000f95cb5f0] [c000000000d97540] nd_pfn_validate+0x5c0/0x7f0
[c0000000f95cb6d0] [c000000000d98300] nd_dax_probe+0xd0/0x1f0
[c0000000f95cb760] [c000000000d9b66c] nd_pmem_probe+0x10c/0x160
[c0000000f95cb790] [c000000000d7f5ec] nvdimm_bus_probe+0x10c/0x240
[c0000000f95cb820] [c000000000d0f844] really_probe+0x254/0x4e0
[c0000000f95cb8b0] [c000000000d0fdfc] driver_probe_device+0x16c/0x1e0
[c0000000f95cb930] [c000000000d10238] device_driver_attach+0x68/0xa0
[c0000000f95cb970] [c000000000d1040c] __driver_attach+0x19c/0x1c0
[c0000000f95cb9f0] [c000000000d0c4c4] bus_for_each_dev+0x94/0x130
[c0000000f95cba50] [c000000000d0f014] driver_attach+0x34/0x50
[c0000000f95cba70] [c000000000d0e208] bus_add_driver+0x178/0x2f0
[c0000000f95cbb00] [c000000000d117c8] driver_register+0x108/0x170
[c0000000f95cbb70] [c000000000d7edb0] __nd_driver_register+0xe0/0x100
[c0000000f95cbbd0] [c000000001a6baa4] nd_pmem_driver_init+0x34/0x48
[c0000000f95cbbf0] [c0000000000106f4] do_one_initcall+0x1d4/0x4b0
[c0000000f95cbcd0] [c0000000019f499c] kernel_init_freeable+0x544/0x65c
[c0000000f95cbdb0] [c000000000010d6c] kernel_init+0x2c/0x180
[c0000000f95cbe20] [c00000000000b954] ret_from_kernel_thread+0x5c/0x68
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Link: https://lore.kernel.org/r/20190919083355.26340-1-aneesh.kumar@linux.ibm.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit ca6bf264f6d856f959c4239cda1047b587745c67 upstream.
A multithreaded namespace creation/destruction stress test currently
deadlocks with the following lockup signature:
INFO: task ndctl:2924 blocked for more than 122 seconds.
Tainted: G OE 5.2.0-rc4+ #3382
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
ndctl D 0 2924 1176 0x00000000
Call Trace:
? __schedule+0x27e/0x780
schedule+0x30/0xb0
wait_nvdimm_bus_probe_idle+0x8a/0xd0 [libnvdimm]
? finish_wait+0x80/0x80
uuid_store+0xe6/0x2e0 [libnvdimm]
kernfs_fop_write+0xf0/0x1a0
vfs_write+0xb7/0x1b0
ksys_write+0x5c/0xd0
do_syscall_64+0x60/0x240
INFO: task ndctl:2923 blocked for more than 122 seconds.
Tainted: G OE 5.2.0-rc4+ #3382
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
ndctl D 0 2923 1175 0x00000000
Call Trace:
? __schedule+0x27e/0x780
? __mutex_lock+0x489/0x910
schedule+0x30/0xb0
schedule_preempt_disabled+0x11/0x20
__mutex_lock+0x48e/0x910
? nvdimm_namespace_common_probe+0x95/0x4d0 [libnvdimm]
? __lock_acquire+0x23f/0x1710
? nvdimm_namespace_common_probe+0x95/0x4d0 [libnvdimm]
nvdimm_namespace_common_probe+0x95/0x4d0 [libnvdimm]
__dax_pmem_probe+0x5e/0x210 [dax_pmem_core]
? nvdimm_bus_probe+0x1d0/0x2c0 [libnvdimm]
dax_pmem_probe+0xc/0x20 [dax_pmem]
nvdimm_bus_probe+0x90/0x2c0 [libnvdimm]
really_probe+0xef/0x390
driver_probe_device+0xb4/0x100
In this sequence an 'nd_dax' device is being probed and trying to take
the lock on its backing namespace to validate that the 'nd_dax' device
indeed has exclusive access to the backing namespace. Meanwhile, another
thread is trying to update the uuid property of that same backing
namespace. So one thread is in the probe path trying to acquire the
lock, and the other thread has acquired the lock and tries to flush the
probe path.
Fix this deadlock by not holding the namespace device_lock over the
wait_nvdimm_bus_probe_idle() synchronization step. In turn this requires
the device_lock to be held on entry to wait_nvdimm_bus_probe_idle() and
subsequently dropped internally to wait_nvdimm_bus_probe_idle().
Cc: <stable@vger.kernel.org>
Fixes: bf9bccc14c ("libnvdimm: pmem label sets and namespace instantiation")
Cc: Vishal Verma <vishal.l.verma@intel.com>
Tested-by: Jane Chu <jane.chu@oracle.com>
Link: https://lore.kernel.org/r/156341210094.292348.2384694131126767789.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit 6de5d06e657acdbcf9637dac37916a4a5309e0f4 upstream.
In preparation for not holding a lock over the execution of nd_ioctl(),
update the implementation to allow multiple threads to be attempting
ioctls at the same time. The bus lock still prevents multiple in-flight
->ndctl() invocations from corrupting each other's state, but static
global staging buffers are moved to the heap.
Reported-by: Vishal Verma <vishal.l.verma@intel.com>
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Tested-by: Vishal Verma <vishal.l.verma@intel.com>
Link: https://lore.kernel.org/r/156341208947.292348.10560140326807607481.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit 700cd033a82d466ad8f9615f9985525e45f8960a upstream.
Namespace activation expects to be able to reference region badblocks.
The following warning sometimes triggers when asynchronous namespace
activation races in front of the completion of namespace probing. Move
all possible namespace probing after region badblocks initialization.
Otherwise, lockdep sometimes catches the uninitialized state of the
badblocks seqlock with stack trace signatures like:
INFO: trying to register non-static key.
pmem2: detected capacity change from 0 to 136365211648
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
CPU: 9 PID: 358 Comm: kworker/u80:5 Tainted: G OE 5.2.0-rc4+ #3382
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 0.0.0 02/06/2015
Workqueue: events_unbound async_run_entry_fn
Call Trace:
dump_stack+0x85/0xc0
pmem1.12: detected capacity change from 0 to 8589934592
register_lock_class+0x56a/0x570
? check_object+0x140/0x270
__lock_acquire+0x80/0x1710
? __mutex_lock+0x39d/0x910
lock_acquire+0x9e/0x180
? nd_pfn_validate+0x28f/0x440 [libnvdimm]
badblocks_check+0x93/0x1f0
? nd_pfn_validate+0x28f/0x440 [libnvdimm]
nd_pfn_validate+0x28f/0x440 [libnvdimm]
? lockdep_hardirqs_on+0xf0/0x180
nd_dax_probe+0x9a/0x120 [libnvdimm]
nd_pmem_probe+0x6d/0x180 [nd_pmem]
nvdimm_bus_probe+0x90/0x2c0 [libnvdimm]
Fixes: 48af2f7e52f4 ("libnvdimm, pfn: during init, clear errors...")
Cc: <stable@vger.kernel.org>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Link: https://lore.kernel.org/r/156341208365.292348.1547528796026249120.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit b70d31d054ee3a6fc1034b9d7fc0ae1e481aa018 upstream.
In preparation for fixing a deadlock between wait_for_bus_probe_idle()
and the nvdimm_bus_list_mutex arrange for __nd_ioctl() without
nvdimm_bus_list_mutex held. This also unifies the 'dimm' and 'bus' level
ioctls into a common nd_ioctl() preamble implementation.
Marked for -stable as it is a pre-requisite for a follow-on fix.
Cc: <stable@vger.kernel.org>
Fixes: bf9bccc14c ("libnvdimm: pmem label sets and namespace instantiation")
Cc: Vishal Verma <vishal.l.verma@intel.com>
Tested-by: Jane Chu <jane.chu@oracle.com>
Link: https://lore.kernel.org/r/156341209518.292348.7183897251740665198.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 7e3e888dfc138089f4c15a81b418e88f0978f744 upstream.
At namespace creation time there is the potential for the "expected to
be zero" fields of a 'pfn' info-block to be filled with indeterminate
data. While the kernel buffer is zeroed on allocation it is immediately
overwritten by nd_pfn_validate() filling it with the current contents of
the on-media info-block location. For fields like, 'flags' and the
'padding' it potentially means that future implementations can not rely on
those fields being zero.
In preparation to stop using the 'start_pad' and 'end_trunc' fields for
section alignment, arrange for fields that are not explicitly
initialized to be guaranteed zero. Bump the minor version to indicate
it is safe to assume the 'padding' and 'flags' are zero. Otherwise,
this corruption is expected to benign since all other critical fields
are explicitly initialized.
Note The cc: stable is about spreading this new policy to as many
kernels as possible not fixing an issue in those kernels. It is not
until the change titled "libnvdimm/pfn: Stop padding pmem namespaces to
section alignment" where this improper initialization becomes a problem.
So if someone decides to backport "libnvdimm/pfn: Stop padding pmem
namespaces to section alignment" (which is not tagged for stable), make
sure this pre-requisite is flagged.
Link: http://lkml.kernel.org/r/156092356065.979959.6681003754765958296.stgit@dwillia2-desk3.amr.corp.intel.com
Fixes: 32ab0a3f51 ("libnvdimm, pmem: 'struct page' for pmem")
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Tested-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> [ppc64]
Cc: <stable@vger.kernel.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Jane Chu <jane.chu@oracle.com>
Cc: Jeff Moyer <jmoyer@redhat.com>
Cc: Jérôme Glisse <jglisse@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Logan Gunthorpe <logang@deltatee.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
Cc: Toshi Kani <toshi.kani@hpe.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Wei Yang <richardw.yang@linux.intel.com>
Cc: Jason Gunthorpe <jgg@mellanox.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit c01dafad77fea8d64c4fdca0a6031c980842ad65 ]
Several places (dimm_devs.c, core.c etc) include label.h but only
label.c uses NSINDEX_SIGNATURE, so move its definition to label.c
instead.
In file included from drivers/nvdimm/dimm_devs.c:23:
drivers/nvdimm/label.h:41:19: warning: 'NSINDEX_SIGNATURE' defined but
not used [-Wunused-const-variable=]
Also, some places abuse "/**" which is only reserved for the kernel-doc.
drivers/nvdimm/bus.c:648: warning: cannot understand function prototype:
'struct attribute_group nd_device_attribute_group = '
drivers/nvdimm/bus.c:677: warning: cannot understand function prototype:
'struct attribute_group nd_numa_attribute_group = '
Those are just some member assignments for the "struct attribute_group"
instances and it can't be expressed in the kernel-doc.
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Qian Cai <cai@lca.pw>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit 52f476a323f9efc959be1c890d0cdcf12e1582e0 upstream.
Jeff discovered that performance improves from ~375K iops to ~519K iops
on a simple psync-write fio workload when moving the location of 'struct
page' from the default PMEM location to DRAM. This result is surprising
because the expectation is that 'struct page' for dax is only needed for
third party references to dax mappings. For example, a dax-mapped buffer
passed to another system call for direct-I/O requires 'struct page' for
sending the request down the driver stack and pinning the page. There is
no usage of 'struct page' for first party access to a file via
read(2)/write(2) and friends.
However, this "no page needed" expectation is violated by
CONFIG_HARDENED_USERCOPY and the check_copy_size() performed in
copy_from_iter_full_nocache() and copy_to_iter_mcsafe(). The
check_heap_object() helper routine assumes the buffer is backed by a
slab allocator (DRAM) page and applies some checks. Those checks are
invalid, dax pages do not originate from the slab, and redundant,
dax_iomap_actor() has already validated that the I/O is within bounds.
Specifically that routine validates that the logical file offset is
within bounds of the file, then it does a sector-to-pfn translation
which validates that the physical mapping is within bounds of the block
device.
Bypass additional hardened usercopy overhead and call the 'no check'
versions of the copy_{to,from}_iter operations directly.
Fixes: 0aed55af88 ("x86, uaccess: introduce copy_from_iter_flushcache...")
Cc: <stable@vger.kernel.org>
Cc: Jeff Moyer <jmoyer@redhat.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Matthew Wilcox <willy@infradead.org>
Reported-and-tested-by: Jeff Smits <jeff.smits@intel.com>
Acked-by: Kees Cook <keescook@chromium.org>
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit c4703ce11c23423d4b46e3d59aef7979814fd608 upstream.
Users have reported intermittent occurrences of DIMM initialization
failures due to duplicate allocations of address capacity detected in
the labels, or errors of the form below, both have the same root cause.
nd namespace1.4: failed to track label: 0
WARNING: CPU: 17 PID: 1381 at drivers/nvdimm/label.c:863
RIP: 0010:__pmem_label_update+0x56c/0x590 [libnvdimm]
Call Trace:
? nd_pmem_namespace_label_update+0xd6/0x160 [libnvdimm]
nd_pmem_namespace_label_update+0xd6/0x160 [libnvdimm]
uuid_store+0x17e/0x190 [libnvdimm]
kernfs_fop_write+0xf0/0x1a0
vfs_write+0xb7/0x1b0
ksys_write+0x57/0xd0
do_syscall_64+0x60/0x210
Unfortunately those reports were typically with a busy parallel
namespace creation / destruction loop making it difficult to see the
components of the bug. However, Jane provided a simple reproducer using
the work-in-progress sub-section implementation.
When ndctl is reconfiguring a namespace it may take an existing defunct
/ disabled namespace and reconfigure it with a new uuid and other
parameters. Critically namespace_update_uuid() takes existing address
resources and renames them for the new namespace to use / reconfigure as
it sees fit. The bug is that this rename only happens in the resource
tracking tree. Existing labels with the old uuid are not reaped leading
to a scenario where multiple active labels reference the same span of
address range.
Teach namespace_update_uuid() to flag any references to the old uuid for
reaping at the next label update attempt.
Cc: <stable@vger.kernel.org>
Fixes: bf9bccc14c ("libnvdimm: pmem label sets and namespace instantiation")
Link: https://github.com/pmem/ndctl/issues/91
Reported-by: Jane Chu <jane.chu@oracle.com>
Reported-by: Jeff Moyer <jmoyer@redhat.com>
Reported-by: Erwin Tsaur <erwin.tsaur@oracle.com>
Cc: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[ Upstream commit 9dc6488e84b0f64df17672271664752488cd6a25 ]
If offset is not zero and length is bigger than PAGE_SIZE,
this will cause to out of boundary access to a page memory
Fixes: 98cc093cba ("block, THP: make block_device_operations.rw_page support THP")
Co-developed-by: Liang ZhiCheng <liangzhicheng@baidu.com>
Signed-off-by: Liang ZhiCheng <liangzhicheng@baidu.com>
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 486fa92df4707b5df58d6508728bdb9321a59766 ]
In case kmemdup fails, the fix releases resources and returns to
avoid the NULL pointer dereference.
Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
[ Upstream commit 55c1fc0af29a6c1b92f217b7eb7581a882e0c07c ]
In case kmemdup fails, the fix goes to blk_err to avoid NULL
pointer dereference.
Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
commit 07464e88365e9236febaca9ed1a2e2006d8bc952 upstream.
Libnvdimm reserves the first 8K of pfn and devicedax namespaces to
store a superblock describing the namespace. This 8K reservation
is contained within the altmap area which the kernel uses for the
vmemmap backing for the pages within the namespace. The altmap
allows for some pages at the start of the altmap area to be reserved
and that mechanism is used to protect the superblock from being
re-used as vmemmap backing.
The number of PFNs to reserve is calculated using:
PHYS_PFN(SZ_8K)
Which is implemented as:
#define PHYS_PFN(x) ((unsigned long)((x) >> PAGE_SHIFT))
So on systems where PAGE_SIZE is greater than 8K the reservation
size is truncated to zero and the superblock area is re-used as
vmemmap backing. As a result all the namespace information stored
in the superblock (i.e. if it's a PFN or DAX namespace) is lost
and the namespace needs to be re-created to get access to the
contents.
This patch fixes this by using PFN_UP() rather than PHYS_PFN() to ensure
that at least one page is reserved. On systems with a 4K pages size this
patch should have no effect.
Cc: stable@vger.kernel.org
Cc: Dan Williams <dan.j.williams@intel.com>
Fixes: ac515c084b ("libnvdimm, pmem, pfn: move pfn setup to the core")
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit fa7d2e639cd90442d868dfc6ca1d4cc9d8bf206e upstream.
For recovery, where non-dax access is needed to a given physical address
range, and testing, allow the 'force_raw' attribute to override the
default establishment of a dev_pagemap.
Otherwise without this capability it is possible to end up with a
namespace that can not be activated due to corrupted info-block, and one
that can not be repaired due to a section collision.
Cc: <stable@vger.kernel.org>
Fixes: 004f1afbe1 ("libnvdimm, pmem: direct map legacy pmem by default")
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit f101ada7da6551127d192c2f1742c1e9e0f62799 upstream.
When trying to see whether current nd_region intersects with others,
trim_pfn_device() has already calculated the *size* to be expanded to
SECTION size.
Do not double append 'adjust' to 'size' when calculating whether the end
of a region collides with the next pmem region.
Fixes: ae86cbfef381 "libnvdimm, pfn: Pad pfn namespaces relative to other regions"
Cc: <stable@vger.kernel.org>
Signed-off-by: Wei Yang <richardw.yang@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 966d23a006ca7b44ac8cf4d0c96b19785e0c3da0 upstream.
The UEFI 2.7 specification sets expectations that the 'updating' flag is
eventually cleared. To date, the libnvdimm core has never adhered to
that protocol. The policy of the core matches the policy of other
multi-device info-block formats like MD-Software-RAID that expect
administrator intervention on inconsistent info-blocks, not automatic
invalidation.
However, some pre-boot environments may unfortunately attempt to "clean
up" the labels and invalidate a set when it fails to find at least one
"non-updating" label in the set. Clear the updating flag after set
updates to minimize the window of vulnerability to aggressive pre-boot
environments.
Ideally implementations would not write to the label area outside of
creating namespaces.
Note that this only minimizes the window, it does not close it as the
system can still crash while clearing the flag and the set can be
subsequently deleted / invalidated by the pre-boot environment.
Fixes: f524bf271a ("libnvdimm: write pmem label set")
Cc: <stable@vger.kernel.org>
Cc: Kelly Couch <kelly.j.couch@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit a95c90f1e2c253b280385ecf3d4ebfe476926b28 upstream.
The last step before devm_memremap_pages() returns success is to allocate
a release action, devm_memremap_pages_release(), to tear the entire setup
down. However, the result from devm_add_action() is not checked.
Checking the error from devm_add_action() is not enough. The api
currently relies on the fact that the percpu_ref it is using is killed by
the time the devm_memremap_pages_release() is run. Rather than continue
this awkward situation, offload the responsibility of killing the
percpu_ref to devm_memremap_pages_release() directly. This allows
devm_memremap_pages() to do the right thing relative to init failures and
shutdown.
Without this change we could fail to register the teardown of
devm_memremap_pages(). The likelihood of hitting this failure is tiny as
small memory allocations almost always succeed. However, the impact of
the failure is large given any future reconfiguration, or disable/enable,
of an nvdimm namespace will fail forever as subsequent calls to
devm_memremap_pages() will fail to setup the pgmap_radix since there will
be stale entries for the physical address range.
An argument could be made to require that the ->kill() operation be set in
the @pgmap arg rather than passed in separately. However, it helps code
readability, tracking the lifetime of a given instance, to be able to grep
the kill routine directly at the devm_memremap_pages() call site.
Link: http://lkml.kernel.org/r/154275558526.76910.7535251937849268605.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Fixes: e8d5134833 ("memremap: change devm_memremap_pages interface...")
Reviewed-by: "Jérôme Glisse" <jglisse@redhat.com>
Reported-by: Logan Gunthorpe <logang@deltatee.com>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit ae86cbfef3818300f1972e52f67a93211acb0e24 upstream.
Commit cfe30b8720 "libnvdimm, pmem: adjust for section collisions with
'System RAM'" enabled Linux to workaround occasions where platform
firmware arranges for "System RAM" and "Persistent Memory" to collide
within a single section boundary. Unfortunately, as reported in this
issue [1], platform firmware can inflict the same collision between
persistent memory regions.
The approach of interrogating iomem_resource does not work in this
case because platform firmware may merge multiple regions into a single
iomem_resource range. Instead provide a method to interrogate regions
that share the same parent bus.
This is a stop-gap until the core-MM can grow support for hotplug on
sub-section boundaries.
[1]: https://github.com/pmem/ndctl/issues/76
Fixes: cfe30b8720 ("libnvdimm, pmem: adjust for section collisions with...")
Cc: <stable@vger.kernel.org>
Reported-by: Patrick Geary <patrickg@supermicro.com>
Tested-by: Patrick Geary <patrickg@supermicro.com>
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 91ed7ac444ef749603a95629a5ec483988c4f14b upstream.
The driver is only initializing bb_res in the devm_memremap_pages()
paths, but the raw namespace case is passing an uninitialized bb_res to
nvdimm_badblocks_populate().
Fixes: e8d5134833 ("memremap: change devm_memremap_pages interface...")
Cc: <stable@vger.kernel.org>
Cc: Christoph Hellwig <hch@lst.de>
Reported-by: Jacek Zloch <jacek.zloch@intel.com>
Reported-by: Krzysztof Rusocki <krzysztof.rusocki@intel.com>
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit 5d394eee2c102453278d81d9a7cf94c80253486a upstream.
While experimenting with region driver loading the following backtrace
was triggered:
INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
[..]
Call Trace:
dump_stack+0x85/0xcb
register_lock_class+0x571/0x580
? __lock_acquire+0x2ba/0x1310
? kernfs_seq_start+0x2a/0x80
__lock_acquire+0xd4/0x1310
? dev_attr_show+0x1c/0x50
? __lock_acquire+0x2ba/0x1310
? kernfs_seq_start+0x2a/0x80
? lock_acquire+0x9e/0x1a0
lock_acquire+0x9e/0x1a0
? dev_attr_show+0x1c/0x50
badblocks_show+0x70/0x190
? dev_attr_show+0x1c/0x50
dev_attr_show+0x1c/0x50
This results from a missing successful call to devm_init_badblocks()
from nd_region_probe(). Block attempts to show badblocks while the
region is not enabled.
Fixes: 6a6bef9042 ("libnvdimm: add mechanism to publish badblocks...")
Cc: <stable@vger.kernel.org>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
commit b6eae0f61db27748606cc00dafcfd1e2c032f0a5 upstream.
Unlike asynchronous initialization in the core we have not yet associated
the device with the parent, and as such the device doesn't hold a reference
to the parent.
In order to resolve that we should be holding a reference on the parent
until the asynchronous initialization has completed.
Cc: <stable@vger.kernel.org>
Fixes: 4d88a97aa9 ("libnvdimm: ...base ... infrastructure")
Signed-off-by: Alexander Duyck <alexander.h.duyck@linux.intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* memory_failure() gets confused by dev_pagemap backed mappings. The
recovery code has specific enabling for several possible page states
that needs new enabling to handle poison in dax mappings. Teach
memory_failure() about ZONE_DEVICE pages.
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Merge tag 'libnvdimm-for-4.19_dax-memory-failure' of gitolite.kernel.org:pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm memory-failure update from Dave Jiang:
"As it stands, memory_failure() gets thoroughly confused by dev_pagemap
backed mappings. The recovery code has specific enabling for several
possible page states and needs new enabling to handle poison in dax
mappings.
In order to support reliable reverse mapping of user space addresses:
1/ Add new locking in the memory_failure() rmap path to prevent races
that would typically be handled by the page lock.
2/ Since dev_pagemap pages are hidden from the page allocator and the
"compound page" accounting machinery, add a mechanism to determine
the size of the mapping that encompasses a given poisoned pfn.
3/ Given pmem errors can be repaired, change the speculatively
accessed poison protection, mce_unmap_kpfn(), to be reversible and
otherwise allow ongoing access from the kernel.
A side effect of this enabling is that MADV_HWPOISON becomes usable
for dax mappings, however the primary motivation is to allow the
system to survive userspace consumption of hardware-poison via dax.
Specifically the current behavior is:
mce: Uncorrected hardware memory error in user-access at af34214200
{1}[Hardware Error]: It has been corrected by h/w and requires no further action
mce: [Hardware Error]: Machine check events logged
{1}[Hardware Error]: event severity: corrected
Memory failure: 0xaf34214: reserved kernel page still referenced by 1 users
[..]
Memory failure: 0xaf34214: recovery action for reserved kernel page: Failed
mce: Memory error not recovered
<reboot>
...and with these changes:
Injecting memory failure for pfn 0x20cb00 at process virtual address 0x7f763dd00000
Memory failure: 0x20cb00: Killing dax-pmd:5421 due to hardware memory corruption
Memory failure: 0x20cb00: recovery action for dax page: Recovered
Given all the cross dependencies I propose taking this through
nvdimm.git with acks from Naoya, x86/core, x86/RAS, and of course dax
folks"
* tag 'libnvdimm-for-4.19_dax-memory-failure' of gitolite.kernel.org:pub/scm/linux/kernel/git/nvdimm/nvdimm:
libnvdimm, pmem: Restore page attributes when clearing errors
x86/memory_failure: Introduce {set, clear}_mce_nospec()
x86/mm/pat: Prepare {reserve, free}_memtype() for "decoy" addresses
mm, memory_failure: Teach memory_failure() about dev_pagemap pages
filesystem-dax: Introduce dax_lock_mapping_entry()
mm, memory_failure: Collect mapping size in collect_procs()
mm, madvise_inject_error: Let memory_failure() optionally take a page reference
mm, dev_pagemap: Do not clear ->mapping on final put
mm, madvise_inject_error: Disable MADV_SOFT_OFFLINE for ZONE_DEVICE pages
filesystem-dax: Set page->index
device-dax: Set page->index
device-dax: Enable page_mapping()
device-dax: Convert to vmf_insert_mixed and vm_fault_t
Collection of misc libnvdimm patches for 4.19 submission
* Adding support to read locked nvdimm capacity.
* Change test code to make DSM failure code injection an override.
* Add support for calculate maximum contiguous area for namespace.
* Add support for queueing a short ARS when there is on going ARS for
nvdimm.
* Allow NULL to be passed in to ->direct_access() for kaddr and
pfn params.
* Improve smart injection support for nvdimm emulation testing.
* Fix test code that supports for emulating controller temperature.
* Fix hang on error before devm_memremap_pages()
* Fix a bug that causes user memory corruption when data returned
to user for ars_status.
* Maintainer updates for Ross Zwisler emails and adding Jan Kara to fsdax.
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Merge tag 'libnvdimm-for-4.19_misc' of gitolite.kernel.org:pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm updates from Dave Jiang:
"Collection of misc libnvdimm patches for 4.19 submission:
- Adding support to read locked nvdimm capacity.
- Change test code to make DSM failure code injection an override.
- Add support for calculate maximum contiguous area for namespace.
- Add support for queueing a short ARS when there is on going ARS for
nvdimm.
- Allow NULL to be passed in to ->direct_access() for kaddr and pfn
params.
- Improve smart injection support for nvdimm emulation testing.
- Fix test code that supports for emulating controller temperature.
- Fix hang on error before devm_memremap_pages()
- Fix a bug that causes user memory corruption when data returned to
user for ars_status.
- Maintainer updates for Ross Zwisler emails and adding Jan Kara to
fsdax"
* tag 'libnvdimm-for-4.19_misc' of gitolite.kernel.org:pub/scm/linux/kernel/git/nvdimm/nvdimm:
libnvdimm: fix ars_status output length calculation
device-dax: avoid hang on error before devm_memremap_pages()
tools/testing/nvdimm: improve emulation of smart injection
filesystem-dax: Do not request kaddr and pfn when not required
md/dm-writecache: Don't request pointer dummy_addr when not required
dax/super: Do not request a pointer kaddr when not required
tools/testing/nvdimm: kaddr and pfn can be NULL to ->direct_access()
s390, dcssblk: kaddr and pfn can be NULL to ->direct_access()
libnvdimm, pmem: kaddr and pfn can be NULL to ->direct_access()
acpi/nfit: queue issuing of ars when an uc error notification comes in
libnvdimm: Export max available extent
libnvdimm: Use max contiguous area for namespace size
MAINTAINERS: Add Jan Kara for filesystem DAX
MAINTAINERS: update Ross Zwisler's email address
tools/testing/nvdimm: Fix support for emulating controller temperature
tools/testing/nvdimm: Make DSM failure code injection an override
acpi, nfit: Prefer _DSM over _LSR for namespace label reads
libnvdimm: Introduce locked DIMM capacity support
Use clear_mce_nospec() to restore WB mode for the kernel linear mapping
of a pmem page that was marked 'HWPoison'. A page with 'HWPoison' set
has also been marked UC in PAT (page attribute table) via
set_mce_nospec() to prevent speculative retrievals of poison.
The 'HWPoison' flag is only cleared when overwriting an entire page.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Greg Kroah-Hartman
Tomas Glozar
Vaibhav Jain
Chris Ye
Hannes Reinecke
Dan Williams
Zhang Qilong
Aneesh Kumar K.V
Vishal Verma
Dan Carpenter
Pankaj Gupta
YueHaibing
Qian Cai
Li RongQing
Aditya Pakki
Kangjie Lu
Oliver O'Halloran
Wei Yang
Alexander Duyck
Linus Torvalds