1b59618ce4
https://source.android.com/docs/security/bulletin/2023-09-01 * tag 'ASB-2023-09-05_4.19-stable' of https://android.googlesource.com/kernel/common: Linux 4.19.294 Revert "ARM: ep93xx: fix missing-prototype warnings" Revert "MIPS: Alchemy: fix dbdma2" Linux 4.19.293 dma-buf/sw_sync: Avoid recursive lock during fence signal clk: Fix undefined reference to `clk_rate_exclusive_{get,put}' scsi: core: raid_class: Remove raid_component_add() scsi: snic: Fix double free in snic_tgt_create() irqchip/mips-gic: Don't touch vl_map if a local interrupt is not routable rtnetlink: Reject negative ifindexes in RTM_NEWLINK netfilter: nf_queue: fix socket leak sched/rt: pick_next_rt_entity(): check list_entry mmc: block: Fix in_flight[issue_type] value error x86/fpu: Set X86_FEATURE_OSXSAVE feature after enabling OSXSAVE in CR4 PCI: acpiphp: Use pci_assign_unassigned_bridge_resources() only for non-root bus media: vcodec: Fix potential array out-of-bounds in encoder queue_setup lib/clz_ctz.c: Fix __clzdi2() and __ctzdi2() for 32-bit kernels batman-adv: Fix batadv_v_ogm_aggr_send memory leak batman-adv: Fix TT global entry leak when client roamed back batman-adv: Do not get eth header before batadv_check_management_packet batman-adv: Don't increase MTU when set by user batman-adv: Trigger events for auto adjusted MTU nfsd: Fix race to FREE_STATEID and cl_revoked ibmveth: Use dcbf rather than dcbfl ipvs: fix racy memcpy in proc_do_sync_threshold ipvs: Improve robustness to the ipvs sysctl bonding: fix macvlan over alb bond support net: remove bond_slave_has_mac_rcu() net/sched: fix a qdisc modification with ambiguous command request igb: Avoid starting unnecessary workqueues dccp: annotate data-races in dccp_poll() sock: annotate data-races around prot->memory_pressure tracing: Fix memleak due to race between current_tracer and trace drm/amd/display: check TG is non-null before checking if enabled drm/amd/display: do not wait for mpc idle if tg is disabled regmap: Account for register length in SMBus I/O limits dm integrity: reduce vmalloc space footprint on 32-bit architectures dm integrity: increase RECALC_SECTORS to improve recalculate speed powerpc: Fail build if using recordmcount with binutils v2.37 powerpc: remove leftover code of old GCC version checks powerpc/32: add stack protector support fbdev: fix potential OOB read in fast_imageblit() fbdev: Fix sys_imageblit() for arbitrary image widths fbdev: Improve performance of sys_imageblit() tty: serial: fsl_lpuart: add earlycon for imx8ulp platform Revert "tty: serial: fsl_lpuart: drop earlycon entry for i.MX8QXP" MIPS: cpu-features: Use boot_cpu_type for CPU type based features MIPS: cpu-features: Enable octeon_cache by cpu_type fs: dlm: fix mismatch of plock results from userspace fs: dlm: use dlm_plock_info for do_unlock_close fs: dlm: change plock interrupted message to debug again fs: dlm: add pid to debug log dlm: replace usage of found with dedicated list iterator variable dlm: improve plock logging if interrupted PCI: acpiphp: Reassign resources on bridge if necessary net: phy: broadcom: stub c45 read/write for 54810 net: xfrm: Amend XFRMA_SEC_CTX nla_policy structure net: fix the RTO timer retransmitting skb every 1ms if linear option is enabled virtio-net: set queues after driver_ok af_unix: Fix null-ptr-deref in unix_stream_sendpage(). netfilter: set default timeout to 3 secs for sctp shutdown send and recv state test_firmware: prevent race conditions by a correct implementation of locking mmc: wbsd: fix double mmc_free_host() in wbsd_init() cifs: Release folio lock on fscache read hit. ALSA: usb-audio: Add support for Mythware XA001AU capture and playback interfaces. serial: 8250: Fix oops for port->pm on uart_change_pm() ASoC: meson: axg-tdm-formatter: fix channel slot allocation ASoC: rt5665: add missed regulator_bulk_disable net: do not allow gso_size to be set to GSO_BY_FRAGS sock: Fix misuse of sk_under_memory_pressure() i40e: fix misleading debug logs team: Fix incorrect deletion of ETH_P_8021AD protocol vid from slaves netfilter: nft_dynset: disallow object maps selftests: mirror_gre_changes: Tighten up the TTL test match xfrm: add NULL check in xfrm_update_ae_params ip_vti: fix potential slab-use-after-free in decode_session6 ip6_vti: fix slab-use-after-free in decode_session6 xfrm: fix slab-use-after-free in decode_session6 xfrm: interface: rename xfrm_interface.c to xfrm_interface_core.c net: af_key: fix sadb_x_filter validation net: xfrm: Fix xfrm_address_filter OOB read btrfs: fix BUG_ON condition in btrfs_cancel_balance powerpc/rtas_flash: allow user copy to flash block cache objects fbdev: mmp: fix value check in mmphw_probe() virtio-mmio: don't break lifecycle of vm_dev virtio-mmio: Use to_virtio_mmio_device() to simply code virtio-mmio: convert to devm_platform_ioremap_resource nfsd: Remove incorrect check in nfsd4_validate_stateid nfsd4: kill warnings on testing stateids with mismatched clientids block: fix signed int overflow in Amiga partition support mmc: sunxi: fix deferred probing mmc: bcm2835: fix deferred probing mmc: Remove dev_err() usage after platform_get_irq() mmc: tmio: move tmio_mmc_set_clock() to platform hook mmc: tmio: replace tmio_mmc_clk_stop() calls with tmio_mmc_set_clock() mmc: meson-gx: remove redundant mmc_request_done() call from irq context mmc: meson-gx: remove useless lock USB: dwc3: qcom: fix NULL-deref on suspend usb: dwc3: qcom: Add helper functions to enable,disable wake irqs irqchip/mips-gic: Use raw spinlock for gic_lock irqchip/mips-gic: Get rid of the reliance on irq_cpu_online() x86/topology: Fix erroneous smp_num_siblings on Intel Hybrid platforms powerpc/64s/radix: Fix soft dirty tracking powerpc: Move page table dump files in a dedicated subdirectory powerpc/mm: dump block address translation on book3s/32 powerpc/mm: dump segment registers on book3s/32 powerpc/mm: Move pgtable_t into platform headers powerpc/mm: move platform specific mmu-xxx.h in platform directories iio: addac: stx104: Fix race condition when converting analog-to-digital iio: addac: stx104: Fix race condition for stx104_write_raw() iio: adc: stx104: Implement and utilize register structures iio: adc: stx104: Utilize iomap interface iio: add addac subdirectory IMA: allow/fix UML builds drm/amdgpu: Fix potential fence use-after-free v2 Bluetooth: L2CAP: Fix use-after-free pcmcia: rsrc_nonstatic: Fix memory leak in nonstatic_release_resource_db() gfs2: Fix possible data races in gfs2_show_options() media: platform: mediatek: vpu: fix NULL ptr dereference media: v4l2-mem2mem: add lock to protect parameter num_rdy FS: JFS: Check for read-only mounted filesystem in txBegin FS: JFS: Fix null-ptr-deref Read in txBegin MIPS: dec: prom: Address -Warray-bounds warning fs: jfs: Fix UBSAN: array-index-out-of-bounds in dbAllocDmapLev udf: Fix uninitialized array access for some pathnames HID: add quirk for 03f0:464a HP Elite Presenter Mouse quota: fix warning in dqgrab() quota: Properly disable quotas when add_dquot_ref() fails ALSA: emu10k1: roll up loops in DSP setup code for Audigy drm/radeon: Fix integer overflow in radeon_cs_parser_init selftests: forwarding: tc_flower: Relax success criterion lib/mpi: Eliminate unused umul_ppmm definitions for MIPS Revert "posix-timers: Ensure timer ID search-loop limit is valid" UPSTREAM: media: usb: siano: Fix warning due to null work_func_t function pointer UPSTREAM: Bluetooth: L2CAP: Fix use-after-free in l2cap_sock_ready_cb UPSTREAM: net/sched: cls_route: No longer copy tcf_result on update to avoid use-after-free UPSTREAM: net/sched: cls_u32: No longer copy tcf_result on update to avoid use-after-free Linux 4.19.292 sch_netem: fix issues in netem_change() vs get_dist_table() alpha: remove __init annotation from exported page_is_ram() scsi: core: Fix possible memory leak if device_add() fails scsi: snic: Fix possible memory leak if device_add() fails scsi: 53c700: Check that command slot is not NULL scsi: storvsc: Fix handling of virtual Fibre Channel timeouts scsi: core: Fix legacy /proc parsing buffer overflow netfilter: nf_tables: report use refcount overflow netfilter: nf_tables: bogus EBUSY when deleting flowtable after flush btrfs: don't stop integrity writeback too early ibmvnic: Handle DMA unmapping of login buffs in release functions wifi: cfg80211: fix sband iftype data lookup for AP_VLAN IB/hfi1: Fix possible panic during hotplug remove drivers: net: prevent tun_build_skb() to exceed the packet size limit dccp: fix data-race around dp->dccps_mss_cache bonding: Fix incorrect deletion of ETH_P_8021AD protocol vid from slaves net/packet: annotate data-races around tp->status mISDN: Update parameter type of dsp_cmx_send() drm/nouveau/disp: Revert a NULL check inside nouveau_connector_get_modes x86: Move gds_ucode_mitigated() declaration to header x86/mm: Fix VDSO and VVAR placement on 5-level paging machines x86/cpu/amd: Enable Zenbleed fix for AMD Custom APU 0405 usb: dwc3: Properly handle processing of pending events usb-storage: alauda: Fix uninit-value in alauda_check_media() binder: fix memory leak in binder_init() iio: cros_ec: Fix the allocation size for cros_ec_command nilfs2: fix use-after-free of nilfs_root in dirtying inodes via iput radix tree test suite: fix incorrect allocation size for pthreads drm/nouveau/gr: enable memory loads on helper invocation on all channels dmaengine: pl330: Return DMA_PAUSED when transaction is paused ipv6: adjust ndisc_is_useropt() to also return true for PIO mmc: moxart: read scr register without changing byte order sparc: fix up arch_cpu_finalize_init() build breakage. UPSTREAM: net/sched: cls_fw: Fix improper refcount update leads to use-after-free Linux 4.19.291 drm/edid: fix objtool warning in drm_cvt_modes() arm64: dts: stratix10: fix incorrect I2C property for SCL signal drivers core: Use sysfs_emit and sysfs_emit_at for show(device *...) functions ARM: dts: nxp/imx6sll: fix wrong property name in usbphy node ARM: dts: imx6sll: fixup of operating points ARM: dts: imx: add usb alias ARM: dts: imx6sll: Make ssi node name same as other platforms PM: sleep: wakeirq: fix wake irq arming PM / wakeirq: support enabling wake-up irq after runtime_suspend called powerpc/mm/altmap: Fix altmap boundary check mtd: rawnand: omap_elm: Fix incorrect type in assignment test_firmware: return ENOMEM instead of ENOSPC on failed memory allocation test_firmware: fix a memory leak with reqs buffer ext2: Drop fragment support net: usbnet: Fix WARNING in usbnet_start_xmit/usb_submit_urb Bluetooth: L2CAP: Fix use-after-free in l2cap_sock_ready_cb fs/sysv: Null check to prevent null-ptr-deref bug USB: zaurus: Add ID for A-300/B-500/C-700 libceph: fix potential hang in ceph_osdc_notify() scsi: zfcp: Defer fc_rport blocking until after ADISC response tcp_metrics: fix data-race in tcpm_suck_dst() vs fastopen tcp_metrics: annotate data-races around tm->tcpm_net tcp_metrics: annotate data-races around tm->tcpm_vals[] tcp_metrics: annotate data-races around tm->tcpm_lock tcp_metrics: annotate data-races around tm->tcpm_stamp tcp_metrics: fix addr_same() helper ip6mr: Fix skb_under_panic in ip6mr_cache_report() net/sched: cls_route: No longer copy tcf_result on update to avoid use-after-free net/sched: cls_u32: No longer copy tcf_result on update to avoid use-after-free net: add missing data-race annotation for sk_ll_usec net: add missing data-race annotations around sk->sk_peek_off net: sched: cls_u32: Fix match key mis-addressing perf test uprobe_from_different_cu: Skip if there is no gcc net/mlx5e: fix return value check in mlx5e_ipsec_remove_trailer() KVM: s390: fix sthyi error handling word-at-a-time: use the same return type for has_zero regardless of endianness loop: Select I/O scheduler 'none' from inside add_disk() perf: Fix function pointer case net/sched: cls_u32: Fix reference counter leak leading to overflow ASoC: cs42l51: fix driver to properly autoload with automatic module loading net/sched: sch_qfq: account for stab overhead in qfq_enqueue net/sched: cls_fw: Fix improper refcount update leads to use-after-free drm/client: Fix memory leak in drm_client_target_cloned dm cache policy smq: ensure IO doesn't prevent cleaner policy progress ASoC: wm8904: Fill the cache for WM8904_ADC_TEST_0 register s390/dasd: fix hanging device after quiesce/resume virtio-net: fix race between set queues and probe serial: 8250_dw: Preserve original value of DLF register serial: 8250_dw: split Synopsys DesignWare 8250 common functions irq-bcm6345-l1: Do not assume a fixed block to cpu mapping tpm_tis: Explicitly check for error code btrfs: check for commit error at btrfs_attach_transaction_barrier() hwmon: (nct7802) Fix for temp6 (PECI1) processed even if PECI1 disabled staging: ks7010: potential buffer overflow in ks_wlan_set_encode_ext() Documentation: security-bugs.rst: clarify CVE handling Documentation: security-bugs.rst: update preferences when dealing with the linux-distros group usb: xhci-mtk: set the dma max_seg_size USB: quirks: add quirk for Focusrite Scarlett usb: ohci-at91: Fix the unhandle interrupt when resume usb: dwc3: don't reset device side if dwc3 was configured as host-only usb: dwc3: pci: skip BYT GPIO lookup table for hardwired phy Revert "usb: dwc3: core: Enable AutoRetry feature in the controller" can: gs_usb: gs_can_close(): add missing set of CAN state to CAN_STATE_STOPPED USB: serial: simple: sort driver entries USB: serial: simple: add Kaufmann RKS+CAN VCP USB: serial: option: add Quectel EC200A module support USB: serial: option: support Quectel EM060K_128 tracing: Fix warning in trace_buffered_event_disable() ring-buffer: Fix wrong stat of cpu_buffer->read ata: pata_ns87415: mark ns87560_tf_read static dm raid: fix missing reconfig_mutex unlock in raid_ctr() error paths block: Fix a source code comment in include/uapi/linux/blkzoned.h ASoC: fsl_spdif: Silence output on stop drm/msm: Fix IS_ERR_OR_NULL() vs NULL check in a5xx_submit_in_rb() RDMA/mlx4: Make check for invalid flags stricter benet: fix return value check in be_lancer_xmit_workarounds() net/sched: mqprio: Add length check for TCA_MQPRIO_{MAX/MIN}_RATE64 net/sched: mqprio: add extack to mqprio_parse_nlattr() net/sched: mqprio: refactor nlattr parsing to a separate function platform/x86: msi-laptop: Fix rfkill out-of-sync on MSI Wind U100 team: reset team's flags when down link is P2P device bonding: reset bond's flags when down link is P2P device tcp: Reduce chance of collisions in inet6_hashfn(). ipv6 addrconf: fix bug where deleting a mngtmpaddr can create a new temporary address ethernet: atheros: fix return value check in atl1e_tso_csum() phy: hisilicon: Fix an out of bounds check in hisi_inno_phy_probe() i40e: Fix an NULL vs IS_ERR() bug for debugfs_create_dir() ext4: fix to check return value of freeze_bdev() in ext4_shutdown() scsi: qla2xxx: Array index may go out of bound scsi: qla2xxx: Fix inconsistent format argument type in qla_os.c ftrace: Fix possible warning on checking all pages used in ftrace_process_locs() ftrace: Store the order of pages allocated in ftrace_page ftrace: Check if pages were allocated before calling free_pages() ftrace: Add information on number of page groups allocated fs: dlm: interrupt posix locks only when process is killed dlm: rearrange async condition return dlm: cleanup plock_op vs plock_xop PCI/ASPM: Avoid link retraining race PCI/ASPM: Factor out pcie_wait_for_retrain() PCI/ASPM: Return 0 or -ETIMEDOUT from pcie_retrain_link() PCI: Rework pcie_retrain_link() wait loop ext4: Fix reusing stale buffer heads from last failed mounting ext4: rename journal_dev to s_journal_dev inside ext4_sb_info btrfs: fix extent buffer leak after tree mod log failure at split_node() bcache: Fix __bch_btree_node_alloc to make the failure behavior consistent bcache: remove 'int n' from parameter list of bch_bucket_alloc_set() bcache: use MAX_CACHES_PER_SET instead of magic number 8 in __bch_bucket_alloc_set gpio: tps68470: Make tps68470_gpio_output() always set the initial value tracing/histograms: Return an error if we fail to add histogram to hist_vars list tcp: annotate data-races around fastopenq.max_qlen tcp: annotate data-races around tp->notsent_lowat tcp: annotate data-races around rskq_defer_accept tcp: annotate data-races around tp->linger2 net: Replace the limit of TCP_LINGER2 with TCP_FIN_TIMEOUT_MAX netfilter: nf_tables: can't schedule in nft_chain_validate netfilter: nf_tables: fix spurious set element insertion failure llc: Don't drop packet from non-root netns. fbdev: au1200fb: Fix missing IRQ check in au1200fb_drv_probe Revert "tcp: avoid the lookup process failing to get sk in ehash table" net:ipv6: check return value of pskb_trim() net: ethernet: ti: cpsw_ale: Fix cpsw_ale_get_field()/cpsw_ale_set_field() pinctrl: amd: Use amd_pinconf_set() for all config options fbdev: imxfb: warn about invalid left/right margin spi: bcm63xx: fix max prepend length igb: Fix igb_down hung on surprise removal wifi: iwlwifi: mvm: avoid baid size integer overflow wifi: wext-core: Fix -Wstringop-overflow warning in ioctl_standard_iw_point() bpf: Address KCSAN report on bpf_lru_list sched/fair: Don't balance task to its current running CPU posix-timers: Ensure timer ID search-loop limit is valid md/raid10: prevent soft lockup while flush writes md: fix data corruption for raid456 when reshape restart while grow up nbd: Add the maximum limit of allocated index in nbd_dev_add debugobjects: Recheck debug_objects_enabled before reporting ext4: correct inline offset when handling xattrs in inode body can: bcm: Fix UAF in bcm_proc_show() fuse: revalidate: don't invalidate if interrupted perf probe: Add test for regression introduced by switch to die_get_decl_file() tracing/histograms: Add histograms to hist_vars if they have referenced variables drm/atomic: Fix potential use-after-free in nonblocking commits scsi: qla2xxx: Pointer may be dereferenced scsi: qla2xxx: Check valid rport returned by fc_bsg_to_rport() scsi: qla2xxx: Fix potential NULL pointer dereference scsi: qla2xxx: Wait for io return on terminate rport xtensa: ISS: fix call to split_if_spec ring-buffer: Fix deadloop issue on reading trace_pipe tty: serial: samsung_tty: Fix a memory leak in s3c24xx_serial_getclk() when iterating clk tty: serial: samsung_tty: Fix a memory leak in s3c24xx_serial_getclk() in case of error Revert "8250: add support for ASIX devices with a FIFO bug" meson saradc: fix clock divider mask length ceph: don't let check_caps skip sending responses for revoke msgs hwrng: imx-rngc - fix the timeout for init and self check serial: atmel: don't enable IRQs prematurely fs: dlm: return positive pid value for F_GETLK md/raid0: add discard support for the 'original' layout misc: pci_endpoint_test: Re-init completion for every test misc: pci_endpoint_test: Free IRQs before removing the device PCI: rockchip: Use u32 variable to access 32-bit registers PCI: rockchip: Fix legacy IRQ generation for RK3399 PCIe endpoint core PCI: rockchip: Add poll and timeout to wait for PHY PLLs to be locked PCI: rockchip: Write PCI Device ID to correct register PCI: rockchip: Assert PCI Configuration Enable bit after probe PCI: qcom: Disable write access to read only registers for IP v2.3.3 PCI: Add function 1 DMA alias quirk for Marvell 88SE9235 PCI/PM: Avoid putting EloPOS E2/S2/H2 PCIe Ports in D3cold jfs: jfs_dmap: Validate db_l2nbperpage while mounting ext4: only update i_reserved_data_blocks on successful block allocation ext4: fix wrong unit use in ext4_mb_clear_bb perf intel-pt: Fix CYC timestamps after standalone CBR SUNRPC: Fix UAF in svc_tcp_listen_data_ready() net: bcmgenet: Ensure MDIO unregistration has clocks enabled tpm: tpm_vtpm_proxy: fix a race condition in /dev/vtpmx creation pinctrl: amd: Only use special debounce behavior for GPIO 0 pinctrl: amd: Detect internal GPIO0 debounce handling pinctrl: amd: Fix mistake in handling clearing pins at startup net/sched: make psched_mtu() RTNL-less safe wifi: airo: avoid uninitialized warning in airo_get_rate() ipv6/addrconf: fix a potential refcount underflow for idev NTB: ntb_tool: Add check for devm_kcalloc NTB: ntb_transport: fix possible memory leak while device_register() fails ntb: intel: Fix error handling in intel_ntb_pci_driver_init() NTB: amd: Fix error handling in amd_ntb_pci_driver_init() ntb: idt: Fix error handling in idt_pci_driver_init() udp6: fix udp6_ehashfn() typo icmp6: Fix null-ptr-deref of ip6_null_entry->rt6i_idev in icmp6_dev(). vrf: Increment Icmp6InMsgs on the original netdev net: mvneta: fix txq_map in case of txq_number==1 workqueue: clean up WORK_* constant types, clarify masking net: lan743x: Don't sleep in atomic context netfilter: nf_tables: prevent OOB access in nft_byteorder_eval netfilter: conntrack: Avoid nf_ct_helper_hash uses after free netfilter: nf_tables: fix scheduling-while-atomic splat netfilter: nf_tables: unbind non-anonymous set if rule construction fails netfilter: nf_tables: reject unbound anonymous set before commit phase netfilter: nf_tables: add NFT_TRANS_PREPARE_ERROR to deal with bound set/chain netfilter: nf_tables: incorrect error path handling with NFT_MSG_NEWRULE netfilter: nf_tables: use net_generic infra for transaction data netfilter: add helper function to set up the nfnetlink header and use it netfilter: nftables: add helper function to set the base sequence number netfilter: nf_tables: add rescheduling points during loop detection walks netfilter: nf_tables: fix nat hook table deletion spi: spi-fsl-spi: allow changing bits_per_word while CS is still active spi: spi-fsl-spi: relax message sanity checking a little spi: spi-fsl-spi: remove always-true conditional in fsl_spi_do_one_msg ARM: orion5x: fix d2net gpio initialization btrfs: fix race when deleting quota root from the dirty cow roots list jffs2: reduce stack usage in jffs2_build_xattr_subsystem() integrity: Fix possible multiple allocation in integrity_inode_get() bcache: Remove unnecessary NULL point check in node allocations mmc: core: disable TRIM on Micron MTFC4GACAJCN-1M mmc: core: disable TRIM on Kingston EMMC04G-M627 NFSD: add encoding of op_recall flag for write delegation ALSA: jack: Fix mutex call in snd_jack_report() i2c: xiic: Don't try to handle more interrupt events after error i2c: xiic: Defer xiic_wakeup() and __xiic_start_xfer() in xiic_process() sh: dma: Fix DMA channel offset calculation net/sched: act_pedit: Add size check for TCA_PEDIT_PARMS_EX tcp: annotate data races in __tcp_oow_rate_limited() net: bridge: keep ports without IFF_UNICAST_FLT in BR_PROMISC mode powerpc: allow PPC_EARLY_DEBUG_CPM only when SERIAL_CPM=y f2fs: fix error path handling in truncate_dnode() mailbox: ti-msgmgr: Fill non-message tx data fields with 0x0 spi: bcm-qspi: return error if neither hif_mspi nor mspi is available Add MODULE_FIRMWARE() for FIRMWARE_TG357766. sctp: fix potential deadlock on &net->sctp.addr_wq_lock rtc: st-lpc: Release some resources in st_rtc_probe() in case of error mfd: stmpe: Only disable the regulators if they are enabled mfd: intel-lpss: Add missing check for platform_get_resource KVM: s390: fix KVM_S390_GET_CMMA_BITS for GFNs in memslot holes mfd: rt5033: Drop rt5033-battery sub-device usb: phy: phy-tahvo: fix memory leak in tahvo_usb_probe() extcon: Fix kernel doc of property capability fields to avoid warnings extcon: Fix kernel doc of property fields to avoid warnings media: usb: siano: Fix warning due to null work_func_t function pointer media: videodev2.h: Fix struct v4l2_input tuner index comment media: usb: Check az6007_read() return value sh: j2: Use ioremap() to translate device tree address into kernel memory w1: fix loop in w1_fini() block: change all __u32 annotations to __be32 in affs_hardblocks.h USB: serial: option: add LARA-R6 01B PIDs ARC: define ASM_NL and __ALIGN(_STR) outside #ifdef __ASSEMBLY__ guard ARCv2: entry: rewrite to enable use of double load/stores LDD/STD ARCv2: entry: avoid a branch ARCv2: entry: push out the Z flag unclobber from common EXCEPTION_PROLOGUE ARCv2: entry: comments about hardware auto-save on taken interrupts modpost: fix section mismatch message for R_ARM_{PC24,CALL,JUMP24} modpost: fix section mismatch message for R_ARM_ABS32 crypto: nx - fix build warnings when DEBUG_FS is not enabled hwrng: virtio - Fix race on data_avail and actual data hwrng: virtio - always add a pending request hwrng: virtio - don't waste entropy hwrng: virtio - don't wait on cleanup hwrng: virtio - add an internal buffer pinctrl: at91-pio4: check return value of devm_kasprintf() perf dwarf-aux: Fix off-by-one in die_get_varname() pinctrl: cherryview: Return correct value if pin in push-pull mode PCI: Add pci_clear_master() stub for non-CONFIG_PCI scsi: 3w-xxxx: Add error handling for initialization failure in tw_probe() ALSA: ac97: Fix possible NULL dereference in snd_ac97_mixer drm/radeon: fix possible division-by-zero errors fbdev: omapfb: lcd_mipid: Fix an error handling path in mipid_spi_probe() arm64: dts: renesas: ulcb-kf: Remove flow control for SCIF1 IB/hfi1: Fix sdma.h tx->num_descs off-by-one errors soc/fsl/qe: fix usb.c build errors ASoC: es8316: Increment max value for ALC Capture Target Volume control ARM: ep93xx: fix missing-prototype warnings drm/panel: simple: fix active size for Ampire AM-480272H3TMQW-T01H Input: adxl34x - do not hardcode interrupt trigger type ARM: dts: BCM5301X: Drop "clock-names" from the SPI node Input: drv260x - sleep between polling GO bit radeon: avoid double free in ci_dpm_init() netlink: Add __sock_i_ino() for __netlink_diag_dump(). ipvlan: Fix return value of ipvlan_queue_xmit() netfilter: nf_conntrack_sip: fix the ct_sip_parse_numerical_param() return value. lib/ts_bm: reset initial match offset for every block of text gtp: Fix use-after-free in __gtp_encap_destroy(). netlink: do not hard code device address lenth in fdb dumps netlink: fix potential deadlock in netlink_set_err() wifi: ath9k: convert msecs to jiffies where needed wifi: ath9k: Fix possible stall on ath9k_txq_list_has_key() memstick r592: make memstick_debug_get_tpc_name() static kexec: fix a memory leak in crash_shrink_memory() watchdog/perf: more properly prevent false positives with turbo modes watchdog/perf: define dummy watchdog_update_hrtimer_threshold() on correct config wifi: rsi: Do not set MMC_PM_KEEP_POWER in shutdown wifi: ath9k: don't allow to overwrite ENDPOINT0 attributes wifi: ray_cs: Fix an error handling path in ray_probe() wifi: ray_cs: Drop useless status variable in parse_addr() wifi: ray_cs: Utilize strnlen() in parse_addr() wifi: wl3501_cs: Fix an error handling path in wl3501_probe() wl3501_cs: use eth_hw_addr_set() net: create netdev->dev_addr assignment helpers wl3501_cs: Fix misspelling and provide missing documentation wl3501_cs: Remove unnecessary NULL check wl3501_cs: Fix a bunch of formatting issues related to function docs wifi: atmel: Fix an error handling path in atmel_probe() wifi: orinoco: Fix an error handling path in orinoco_cs_probe() wifi: orinoco: Fix an error handling path in spectrum_cs_probe() nfc: llcp: fix possible use of uninitialized variable in nfc_llcp_send_connect() nfc: constify several pointers to u8, char and sk_buff wifi: mwifiex: Fix the size of a memory allocation in mwifiex_ret_802_11_scan() samples/bpf: Fix buffer overflow in tcp_basertt wifi: ath9k: avoid referencing uninit memory in ath9k_wmi_ctrl_rx wifi: ath9k: fix AR9003 mac hardware hang check register offset calculation evm: Complete description of evm_inode_setattr() ARM: 9303/1: kprobes: avoid missing-declaration warnings PM: domains: fix integer overflow issues in genpd_parse_state() clocksource/drivers/cadence-ttc: Fix memory leak in ttc_timer_probe clocksource/drivers/cadence-ttc: Use ttc driver as platform driver clocksource/drivers: Unify the names to timer-* format irqchip/jcore-aic: Fix missing allocation of IRQ descriptors irqchip/jcore-aic: Kill use of irq_create_strict_mappings() md/raid10: fix io loss while replacement replace rdev md/raid10: fix wrong setting of max_corr_read_errors md/raid10: fix overflow of md/safe_mode_delay md/raid10: check slab-out-of-bounds in md_bitmap_get_counter treewide: Remove uninitialized_var() usage drm/amdgpu: Validate VM ioctl flags. scripts/tags.sh: Resolve gtags empty index generation drm/edid: Fix uninitialized variable in drm_cvt_modes() fbdev: imsttfb: Fix use after free bug in imsttfb_probe video: imsttfb: check for ioremap() failures x86/smp: Use dedicated cache-line for mwait_play_dead() gfs2: Don't deref jdesc in evict Linux 4.19.290 x86: fix backwards merge of GDS/SRSO bit xen/netback: Fix buffer overrun triggered by unusual packet Documentation/x86: Fix backwards on/off logic about YMM support x86/xen: Fix secondary processors' FPU initialization KVM: Add GDS_NO support to KVM x86/speculation: Add Kconfig option for GDS x86/speculation: Add force option to GDS mitigation x86/speculation: Add Gather Data Sampling mitigation x86/fpu: Move FPU initialization into arch_cpu_finalize_init() x86/fpu: Mark init functions __init x86/fpu: Remove cpuinfo argument from init functions init, x86: Move mem_encrypt_init() into arch_cpu_finalize_init() init: Invoke arch_cpu_finalize_init() earlier init: Remove check_bugs() leftovers um/cpu: Switch to arch_cpu_finalize_init() sparc/cpu: Switch to arch_cpu_finalize_init() sh/cpu: Switch to arch_cpu_finalize_init() mips/cpu: Switch to arch_cpu_finalize_init() m68k/cpu: Switch to arch_cpu_finalize_init() ia64/cpu: Switch to arch_cpu_finalize_init() ARM: cpu: Switch to arch_cpu_finalize_init() x86/cpu: Switch to arch_cpu_finalize_init() init: Provide arch_cpu_finalize_init() Conflicts: drivers/mmc/core/block.c drivers/mmc/host/sdhci-msm.c drivers/usb/dwc3/core.c drivers/usb/dwc3/gadget.c Change-Id: Id2f4d5c8067f8e5eda39c0eaa5e59d54a394b4c7
1203 lines
30 KiB
C
1203 lines
30 KiB
C
/*
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* linux/init/main.c
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*
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* Copyright (C) 1991, 1992 Linus Torvalds
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*
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* GK 2/5/95 - Changed to support mounting root fs via NFS
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* Added initrd & change_root: Werner Almesberger & Hans Lermen, Feb '96
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* Moan early if gcc is old, avoiding bogus kernels - Paul Gortmaker, May '96
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* Simplified starting of init: Michael A. Griffith <grif@acm.org>
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*/
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#define DEBUG /* Enable initcall_debug */
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#include <linux/types.h>
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#include <linux/extable.h>
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#include <linux/module.h>
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#include <linux/proc_fs.h>
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#include <linux/binfmts.h>
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#include <linux/kernel.h>
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#include <linux/syscalls.h>
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#include <linux/stackprotector.h>
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#include <linux/string.h>
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#include <linux/ctype.h>
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#include <linux/delay.h>
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#include <linux/ioport.h>
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#include <linux/init.h>
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#include <linux/initrd.h>
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#include <linux/bootmem.h>
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#include <linux/acpi.h>
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#include <linux/console.h>
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#include <linux/nmi.h>
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#include <linux/percpu.h>
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#include <linux/kmod.h>
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#include <linux/vmalloc.h>
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#include <linux/kernel_stat.h>
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#include <linux/start_kernel.h>
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#include <linux/security.h>
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#include <linux/smp.h>
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#include <linux/profile.h>
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#include <linux/rcupdate.h>
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#include <linux/moduleparam.h>
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#include <linux/kallsyms.h>
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#include <linux/writeback.h>
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#include <linux/cpu.h>
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#include <linux/cpuset.h>
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#include <linux/cgroup.h>
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#include <linux/efi.h>
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#include <linux/tick.h>
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#include <linux/sched/isolation.h>
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#include <linux/interrupt.h>
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#include <linux/taskstats_kern.h>
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#include <linux/delayacct.h>
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#include <linux/unistd.h>
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#include <linux/utsname.h>
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#include <linux/rmap.h>
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#include <linux/mempolicy.h>
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#include <linux/key.h>
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#include <linux/buffer_head.h>
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#include <linux/page_ext.h>
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#include <linux/debug_locks.h>
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#include <linux/debugobjects.h>
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#include <linux/lockdep.h>
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#include <linux/kmemleak.h>
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#include <linux/pid_namespace.h>
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#include <linux/device.h>
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#include <linux/kthread.h>
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#include <linux/sched.h>
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#include <linux/sched/init.h>
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#include <linux/signal.h>
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#include <linux/idr.h>
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#include <linux/kgdb.h>
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#include <linux/ftrace.h>
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#include <linux/async.h>
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#include <linux/sfi.h>
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#include <linux/shmem_fs.h>
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#include <linux/slab.h>
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#include <linux/perf_event.h>
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#include <linux/ptrace.h>
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#include <linux/pti.h>
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#include <linux/blkdev.h>
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#include <linux/elevator.h>
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#include <linux/sched/clock.h>
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#include <linux/sched/task.h>
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#include <linux/sched/task_stack.h>
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#include <linux/context_tracking.h>
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#include <linux/random.h>
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#include <linux/list.h>
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#include <linux/integrity.h>
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#include <linux/proc_ns.h>
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#include <linux/io.h>
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#include <linux/cache.h>
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#include <linux/rodata_test.h>
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#include <linux/jump_label.h>
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#include <asm/io.h>
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#include <asm/setup.h>
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#include <asm/sections.h>
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#include <asm/cacheflush.h>
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#define CREATE_TRACE_POINTS
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#include <trace/events/initcall.h>
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static int kernel_init(void *);
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extern void init_IRQ(void);
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extern void radix_tree_init(void);
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/*
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* Debug helper: via this flag we know that we are in 'early bootup code'
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* where only the boot processor is running with IRQ disabled. This means
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* two things - IRQ must not be enabled before the flag is cleared and some
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* operations which are not allowed with IRQ disabled are allowed while the
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* flag is set.
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*/
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bool early_boot_irqs_disabled __read_mostly;
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enum system_states system_state __read_mostly;
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EXPORT_SYMBOL(system_state);
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/*
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* Boot command-line arguments
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*/
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#define MAX_INIT_ARGS CONFIG_INIT_ENV_ARG_LIMIT
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#define MAX_INIT_ENVS CONFIG_INIT_ENV_ARG_LIMIT
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extern void time_init(void);
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/* Default late time init is NULL. archs can override this later. */
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void (*__initdata late_time_init)(void);
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/* Untouched command line saved by arch-specific code. */
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char __initdata boot_command_line[COMMAND_LINE_SIZE];
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/* Untouched saved command line (eg. for /proc) */
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char *saved_command_line;
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EXPORT_SYMBOL_GPL(saved_command_line);
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/* Command line for parameter parsing */
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static char *static_command_line;
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/* Command line for per-initcall parameter parsing */
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static char *initcall_command_line;
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static char *execute_command;
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static char *ramdisk_execute_command;
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/*
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* Used to generate warnings if static_key manipulation functions are used
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* before jump_label_init is called.
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*/
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bool static_key_initialized __read_mostly;
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EXPORT_SYMBOL_GPL(static_key_initialized);
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/*
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* If set, this is an indication to the drivers that reset the underlying
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* device before going ahead with the initialization otherwise driver might
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* rely on the BIOS and skip the reset operation.
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*
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* This is useful if kernel is booting in an unreliable environment.
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* For ex. kdump situation where previous kernel has crashed, BIOS has been
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* skipped and devices will be in unknown state.
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*/
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unsigned int reset_devices;
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EXPORT_SYMBOL(reset_devices);
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static int __init set_reset_devices(char *str)
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{
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reset_devices = 1;
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return 1;
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}
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__setup("reset_devices", set_reset_devices);
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static const char *argv_init[MAX_INIT_ARGS+2] = { "init", NULL, };
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const char *envp_init[MAX_INIT_ENVS+2] = { "HOME=/", "TERM=linux", NULL, };
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static const char *panic_later, *panic_param;
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extern const struct obs_kernel_param __setup_start[], __setup_end[];
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static bool __init obsolete_checksetup(char *line)
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{
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const struct obs_kernel_param *p;
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bool had_early_param = false;
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p = __setup_start;
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do {
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int n = strlen(p->str);
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if (parameqn(line, p->str, n)) {
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if (p->early) {
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/* Already done in parse_early_param?
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* (Needs exact match on param part).
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* Keep iterating, as we can have early
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* params and __setups of same names 8( */
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if (line[n] == '\0' || line[n] == '=')
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had_early_param = true;
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} else if (!p->setup_func) {
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pr_warn("Parameter %s is obsolete, ignored\n",
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p->str);
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return true;
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} else if (p->setup_func(line + n))
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return true;
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}
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p++;
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} while (p < __setup_end);
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return had_early_param;
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}
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/*
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* This should be approx 2 Bo*oMips to start (note initial shift), and will
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* still work even if initially too large, it will just take slightly longer
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*/
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unsigned long loops_per_jiffy = (1<<12);
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EXPORT_SYMBOL(loops_per_jiffy);
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static int __init debug_kernel(char *str)
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{
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console_loglevel = CONSOLE_LOGLEVEL_DEBUG;
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return 0;
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}
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static int __init quiet_kernel(char *str)
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{
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console_loglevel = CONSOLE_LOGLEVEL_QUIET;
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return 0;
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}
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early_param("debug", debug_kernel);
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early_param("quiet", quiet_kernel);
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static int __init loglevel(char *str)
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{
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int newlevel;
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/*
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* Only update loglevel value when a correct setting was passed,
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* to prevent blind crashes (when loglevel being set to 0) that
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* are quite hard to debug
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*/
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if (get_option(&str, &newlevel)) {
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console_loglevel = newlevel;
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return 0;
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}
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return -EINVAL;
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}
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early_param("loglevel", loglevel);
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/* Change NUL term back to "=", to make "param" the whole string. */
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static int __init repair_env_string(char *param, char *val,
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const char *unused, void *arg)
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{
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if (val) {
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/* param=val or param="val"? */
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if (val == param+strlen(param)+1)
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val[-1] = '=';
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else if (val == param+strlen(param)+2) {
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val[-2] = '=';
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memmove(val-1, val, strlen(val)+1);
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val--;
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} else
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BUG();
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}
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return 0;
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}
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/* Anything after -- gets handed straight to init. */
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static int __init set_init_arg(char *param, char *val,
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const char *unused, void *arg)
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{
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unsigned int i;
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if (panic_later)
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return 0;
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repair_env_string(param, val, unused, NULL);
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for (i = 0; argv_init[i]; i++) {
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if (i == MAX_INIT_ARGS) {
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panic_later = "init";
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panic_param = param;
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return 0;
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}
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}
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argv_init[i] = param;
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return 0;
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}
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/*
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* Unknown boot options get handed to init, unless they look like
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* unused parameters (modprobe will find them in /proc/cmdline).
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*/
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static int __init unknown_bootoption(char *param, char *val,
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const char *unused, void *arg)
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{
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repair_env_string(param, val, unused, NULL);
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/* Handle obsolete-style parameters */
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if (obsolete_checksetup(param))
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return 0;
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/* Unused module parameter. */
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if (strchr(param, '.') && (!val || strchr(param, '.') < val))
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return 0;
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if (panic_later)
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return 0;
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if (val) {
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/* Environment option */
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unsigned int i;
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for (i = 0; envp_init[i]; i++) {
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if (i == MAX_INIT_ENVS) {
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panic_later = "env";
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panic_param = param;
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}
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if (!strncmp(param, envp_init[i], val - param))
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break;
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}
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envp_init[i] = param;
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} else {
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/* Command line option */
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unsigned int i;
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for (i = 0; argv_init[i]; i++) {
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if (i == MAX_INIT_ARGS) {
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panic_later = "init";
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panic_param = param;
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}
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}
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argv_init[i] = param;
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}
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return 0;
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}
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static int __init init_setup(char *str)
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{
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unsigned int i;
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execute_command = str;
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/*
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* In case LILO is going to boot us with default command line,
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* it prepends "auto" before the whole cmdline which makes
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* the shell think it should execute a script with such name.
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* So we ignore all arguments entered _before_ init=... [MJ]
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*/
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for (i = 1; i < MAX_INIT_ARGS; i++)
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argv_init[i] = NULL;
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return 1;
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}
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__setup("init=", init_setup);
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static int __init rdinit_setup(char *str)
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{
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unsigned int i;
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ramdisk_execute_command = str;
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/* See "auto" comment in init_setup */
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for (i = 1; i < MAX_INIT_ARGS; i++)
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argv_init[i] = NULL;
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return 1;
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}
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__setup("rdinit=", rdinit_setup);
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#ifndef CONFIG_SMP
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static const unsigned int setup_max_cpus = NR_CPUS;
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static inline void setup_nr_cpu_ids(void) { }
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static inline void smp_prepare_cpus(unsigned int maxcpus) { }
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#endif
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/*
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* We need to store the untouched command line for future reference.
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* We also need to store the touched command line since the parameter
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* parsing is performed in place, and we should allow a component to
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* store reference of name/value for future reference.
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*/
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static void __init setup_command_line(char *command_line)
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{
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saved_command_line =
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memblock_virt_alloc(strlen(boot_command_line) + 1, 0);
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initcall_command_line =
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memblock_virt_alloc(strlen(boot_command_line) + 1, 0);
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static_command_line = memblock_virt_alloc(strlen(command_line) + 1, 0);
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strcpy(saved_command_line, boot_command_line);
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strcpy(static_command_line, command_line);
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}
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/*
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* We need to finalize in a non-__init function or else race conditions
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* between the root thread and the init thread may cause start_kernel to
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* be reaped by free_initmem before the root thread has proceeded to
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* cpu_idle.
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*
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* gcc-3.4 accidentally inlines this function, so use noinline.
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*/
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static __initdata DECLARE_COMPLETION(kthreadd_done);
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static noinline void __ref rest_init(void)
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{
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struct task_struct *tsk;
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int pid;
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rcu_scheduler_starting();
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/*
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* We need to spawn init first so that it obtains pid 1, however
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* the init task will end up wanting to create kthreads, which, if
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* we schedule it before we create kthreadd, will OOPS.
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*/
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pid = kernel_thread(kernel_init, NULL, CLONE_FS);
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/*
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* Pin init on the boot CPU. Task migration is not properly working
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* until sched_init_smp() has been run. It will set the allowed
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* CPUs for init to the non isolated CPUs.
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*/
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rcu_read_lock();
|
|
tsk = find_task_by_pid_ns(pid, &init_pid_ns);
|
|
set_cpus_allowed_ptr(tsk, cpumask_of(smp_processor_id()));
|
|
rcu_read_unlock();
|
|
|
|
numa_default_policy();
|
|
pid = kernel_thread(kthreadd, NULL, CLONE_FS | CLONE_FILES);
|
|
rcu_read_lock();
|
|
kthreadd_task = find_task_by_pid_ns(pid, &init_pid_ns);
|
|
rcu_read_unlock();
|
|
|
|
/*
|
|
* Enable might_sleep() and smp_processor_id() checks.
|
|
* They cannot be enabled earlier because with CONFIG_PREEMPT=y
|
|
* kernel_thread() would trigger might_sleep() splats. With
|
|
* CONFIG_PREEMPT_VOLUNTARY=y the init task might have scheduled
|
|
* already, but it's stuck on the kthreadd_done completion.
|
|
*/
|
|
system_state = SYSTEM_SCHEDULING;
|
|
|
|
complete(&kthreadd_done);
|
|
|
|
/*
|
|
* The boot idle thread must execute schedule()
|
|
* at least once to get things moving:
|
|
*/
|
|
schedule_preempt_disabled();
|
|
/* Call into cpu_idle with preempt disabled */
|
|
cpu_startup_entry(CPUHP_ONLINE);
|
|
}
|
|
|
|
/* Check for early params. */
|
|
static int __init do_early_param(char *param, char *val,
|
|
const char *unused, void *arg)
|
|
{
|
|
const struct obs_kernel_param *p;
|
|
|
|
for (p = __setup_start; p < __setup_end; p++) {
|
|
if ((p->early && parameq(param, p->str)) ||
|
|
(strcmp(param, "console") == 0 &&
|
|
strcmp(p->str, "earlycon") == 0)
|
|
) {
|
|
if (p->setup_func(val) != 0)
|
|
pr_warn("Malformed early option '%s'\n", param);
|
|
}
|
|
}
|
|
/* We accept everything at this stage. */
|
|
return 0;
|
|
}
|
|
|
|
void __init parse_early_options(char *cmdline)
|
|
{
|
|
parse_args("early options", cmdline, NULL, 0, 0, 0, NULL,
|
|
do_early_param);
|
|
}
|
|
|
|
/* Arch code calls this early on, or if not, just before other parsing. */
|
|
void __init parse_early_param(void)
|
|
{
|
|
static int done __initdata;
|
|
static char tmp_cmdline[COMMAND_LINE_SIZE] __initdata;
|
|
|
|
if (done)
|
|
return;
|
|
|
|
/* All fall through to do_early_param. */
|
|
strlcpy(tmp_cmdline, boot_command_line, COMMAND_LINE_SIZE);
|
|
parse_early_options(tmp_cmdline);
|
|
done = 1;
|
|
}
|
|
|
|
void __init __weak arch_post_acpi_subsys_init(void) { }
|
|
|
|
void __init __weak smp_setup_processor_id(void)
|
|
{
|
|
}
|
|
|
|
# if THREAD_SIZE >= PAGE_SIZE
|
|
void __init __weak thread_stack_cache_init(void)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
bool initcall_debug;
|
|
core_param(initcall_debug, initcall_debug, bool, 0644);
|
|
|
|
#ifdef TRACEPOINTS_ENABLED
|
|
static void __init initcall_debug_enable(void);
|
|
#else
|
|
static inline void initcall_debug_enable(void)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
/* Report memory auto-initialization states for this boot. */
|
|
static void __init report_meminit(void)
|
|
{
|
|
const char *stack;
|
|
|
|
if (IS_ENABLED(CONFIG_INIT_STACK_ALL_PATTERN))
|
|
stack = "all(pattern)";
|
|
else if (IS_ENABLED(CONFIG_INIT_STACK_ALL_ZERO))
|
|
stack = "all(zero)";
|
|
else if (IS_ENABLED(CONFIG_GCC_PLUGIN_STRUCTLEAK_BYREF_ALL))
|
|
stack = "byref_all(zero)";
|
|
else if (IS_ENABLED(CONFIG_GCC_PLUGIN_STRUCTLEAK_BYREF))
|
|
stack = "byref(zero)";
|
|
else if (IS_ENABLED(CONFIG_GCC_PLUGIN_STRUCTLEAK_USER))
|
|
stack = "__user(zero)";
|
|
else
|
|
stack = "off";
|
|
|
|
pr_info("mem auto-init: stack:%s, heap alloc:%s, heap free:%s\n",
|
|
stack, want_init_on_alloc(GFP_KERNEL) ? "on" : "off",
|
|
want_init_on_free() ? "on" : "off");
|
|
if (want_init_on_free())
|
|
pr_info("mem auto-init: clearing system memory may take some time...\n");
|
|
}
|
|
|
|
/*
|
|
* Set up kernel memory allocators
|
|
*/
|
|
static void __init mm_init(void)
|
|
{
|
|
/*
|
|
* page_ext requires contiguous pages,
|
|
* bigger than MAX_ORDER unless SPARSEMEM.
|
|
*/
|
|
page_ext_init_flatmem();
|
|
report_meminit();
|
|
mem_init();
|
|
/* page_owner must be initialized after buddy is ready */
|
|
page_ext_init_flatmem_late();
|
|
kmem_cache_init();
|
|
pgtable_init();
|
|
vmalloc_init();
|
|
ioremap_huge_init();
|
|
/* Should be run before the first non-init thread is created */
|
|
init_espfix_bsp();
|
|
/* Should be run after espfix64 is set up. */
|
|
pti_init();
|
|
}
|
|
|
|
asmlinkage __visible void __init start_kernel(void)
|
|
{
|
|
char *command_line;
|
|
char *after_dashes;
|
|
|
|
set_task_stack_end_magic(&init_task);
|
|
smp_setup_processor_id();
|
|
debug_objects_early_init();
|
|
|
|
cgroup_init_early();
|
|
|
|
local_irq_disable();
|
|
early_boot_irqs_disabled = true;
|
|
|
|
/*
|
|
* Interrupts are still disabled. Do necessary setups, then
|
|
* enable them.
|
|
*/
|
|
boot_cpu_init();
|
|
page_address_init();
|
|
pr_notice("%s", linux_banner);
|
|
setup_arch(&command_line);
|
|
mm_init_cpumask(&init_mm);
|
|
setup_command_line(command_line);
|
|
setup_nr_cpu_ids();
|
|
setup_per_cpu_areas();
|
|
smp_prepare_boot_cpu(); /* arch-specific boot-cpu hooks */
|
|
boot_cpu_hotplug_init();
|
|
|
|
build_all_zonelists(NULL);
|
|
page_alloc_init();
|
|
|
|
pr_notice("Kernel command line: %s\n", boot_command_line);
|
|
/* parameters may set static keys */
|
|
jump_label_init();
|
|
parse_early_param();
|
|
after_dashes = parse_args("Booting kernel",
|
|
static_command_line, __start___param,
|
|
__stop___param - __start___param,
|
|
-1, -1, NULL, &unknown_bootoption);
|
|
if (!IS_ERR_OR_NULL(after_dashes))
|
|
parse_args("Setting init args", after_dashes, NULL, 0, -1, -1,
|
|
NULL, set_init_arg);
|
|
|
|
/*
|
|
* These use large bootmem allocations and must precede
|
|
* kmem_cache_init()
|
|
*/
|
|
setup_log_buf(0);
|
|
vfs_caches_init_early();
|
|
sort_main_extable();
|
|
trap_init();
|
|
mm_init();
|
|
|
|
ftrace_init();
|
|
|
|
/* trace_printk can be enabled here */
|
|
early_trace_init();
|
|
|
|
/*
|
|
* Set up the scheduler prior starting any interrupts (such as the
|
|
* timer interrupt). Full topology setup happens at smp_init()
|
|
* time - but meanwhile we still have a functioning scheduler.
|
|
*/
|
|
sched_init();
|
|
/*
|
|
* Disable preemption - early bootup scheduling is extremely
|
|
* fragile until we cpu_idle() for the first time.
|
|
*/
|
|
preempt_disable();
|
|
if (WARN(!irqs_disabled(),
|
|
"Interrupts were enabled *very* early, fixing it\n"))
|
|
local_irq_disable();
|
|
radix_tree_init();
|
|
|
|
/*
|
|
* Set up housekeeping before setting up workqueues to allow the unbound
|
|
* workqueue to take non-housekeeping into account.
|
|
*/
|
|
housekeeping_init();
|
|
|
|
/*
|
|
* Allow workqueue creation and work item queueing/cancelling
|
|
* early. Work item execution depends on kthreads and starts after
|
|
* workqueue_init().
|
|
*/
|
|
workqueue_init_early();
|
|
|
|
rcu_init();
|
|
|
|
/* Trace events are available after this */
|
|
trace_init();
|
|
|
|
if (initcall_debug)
|
|
initcall_debug_enable();
|
|
|
|
context_tracking_init();
|
|
/* init some links before init_ISA_irqs() */
|
|
early_irq_init();
|
|
init_IRQ();
|
|
tick_init();
|
|
rcu_init_nohz();
|
|
init_timers();
|
|
hrtimers_init();
|
|
softirq_init();
|
|
timekeeping_init();
|
|
time_init();
|
|
|
|
/*
|
|
* For best initial stack canary entropy, prepare it after:
|
|
* - setup_arch() for any UEFI RNG entropy and boot cmdline access
|
|
* - timekeeping_init() for ktime entropy used in random_init()
|
|
* - time_init() for making random_get_entropy() work on some platforms
|
|
* - random_init() to initialize the RNG from from early entropy sources
|
|
*/
|
|
random_init(command_line);
|
|
boot_init_stack_canary();
|
|
|
|
perf_event_init();
|
|
profile_init();
|
|
call_function_init();
|
|
WARN(!irqs_disabled(), "Interrupts were enabled early\n");
|
|
|
|
early_boot_irqs_disabled = false;
|
|
local_irq_enable();
|
|
|
|
kmem_cache_init_late();
|
|
|
|
/*
|
|
* HACK ALERT! This is early. We're enabling the console before
|
|
* we've done PCI setups etc, and console_init() must be aware of
|
|
* this. But we do want output early, in case something goes wrong.
|
|
*/
|
|
console_init();
|
|
if (panic_later)
|
|
panic("Too many boot %s vars at `%s'", panic_later,
|
|
panic_param);
|
|
|
|
lockdep_init();
|
|
|
|
/*
|
|
* Need to run this when irqs are enabled, because it wants
|
|
* to self-test [hard/soft]-irqs on/off lock inversion bugs
|
|
* too:
|
|
*/
|
|
locking_selftest();
|
|
|
|
#ifdef CONFIG_BLK_DEV_INITRD
|
|
if (initrd_start && !initrd_below_start_ok &&
|
|
page_to_pfn(virt_to_page((void *)initrd_start)) < min_low_pfn) {
|
|
pr_crit("initrd overwritten (0x%08lx < 0x%08lx) - disabling it.\n",
|
|
page_to_pfn(virt_to_page((void *)initrd_start)),
|
|
min_low_pfn);
|
|
initrd_start = 0;
|
|
}
|
|
#endif
|
|
kmemleak_init();
|
|
debug_objects_mem_init();
|
|
setup_per_cpu_pageset();
|
|
numa_policy_init();
|
|
acpi_early_init();
|
|
if (late_time_init)
|
|
late_time_init();
|
|
sched_clock_init();
|
|
calibrate_delay();
|
|
|
|
arch_cpu_finalize_init();
|
|
|
|
pid_idr_init();
|
|
anon_vma_init();
|
|
#ifdef CONFIG_X86
|
|
if (efi_enabled(EFI_RUNTIME_SERVICES))
|
|
efi_enter_virtual_mode();
|
|
#endif
|
|
thread_stack_cache_init();
|
|
cred_init();
|
|
fork_init();
|
|
proc_caches_init();
|
|
uts_ns_init();
|
|
buffer_init();
|
|
key_init();
|
|
security_init();
|
|
dbg_late_init();
|
|
vfs_caches_init();
|
|
pagecache_init();
|
|
signals_init();
|
|
seq_file_init();
|
|
proc_root_init();
|
|
nsfs_init();
|
|
cpuset_init();
|
|
cgroup_init();
|
|
taskstats_init_early();
|
|
delayacct_init();
|
|
|
|
|
|
acpi_subsystem_init();
|
|
arch_post_acpi_subsys_init();
|
|
sfi_init_late();
|
|
|
|
if (efi_enabled(EFI_RUNTIME_SERVICES)) {
|
|
efi_free_boot_services();
|
|
}
|
|
|
|
/* Do the rest non-__init'ed, we're now alive */
|
|
rest_init();
|
|
|
|
prevent_tail_call_optimization();
|
|
}
|
|
|
|
/* Call all constructor functions linked into the kernel. */
|
|
static void __init do_ctors(void)
|
|
{
|
|
#ifdef CONFIG_CONSTRUCTORS
|
|
ctor_fn_t *fn = (ctor_fn_t *) __ctors_start;
|
|
|
|
for (; fn < (ctor_fn_t *) __ctors_end; fn++)
|
|
(*fn)();
|
|
#endif
|
|
}
|
|
|
|
#ifdef CONFIG_KALLSYMS
|
|
struct blacklist_entry {
|
|
struct list_head next;
|
|
char *buf;
|
|
};
|
|
|
|
static __initdata_or_module LIST_HEAD(blacklisted_initcalls);
|
|
|
|
static int __init initcall_blacklist(char *str)
|
|
{
|
|
char *str_entry;
|
|
struct blacklist_entry *entry;
|
|
|
|
/* str argument is a comma-separated list of functions */
|
|
do {
|
|
str_entry = strsep(&str, ",");
|
|
if (str_entry) {
|
|
pr_debug("blacklisting initcall %s\n", str_entry);
|
|
entry = alloc_bootmem(sizeof(*entry));
|
|
entry->buf = alloc_bootmem(strlen(str_entry) + 1);
|
|
strcpy(entry->buf, str_entry);
|
|
list_add(&entry->next, &blacklisted_initcalls);
|
|
}
|
|
} while (str_entry);
|
|
|
|
return 1;
|
|
}
|
|
|
|
static bool __init_or_module initcall_blacklisted(initcall_t fn)
|
|
{
|
|
struct blacklist_entry *entry;
|
|
char fn_name[KSYM_SYMBOL_LEN];
|
|
unsigned long addr;
|
|
|
|
if (list_empty(&blacklisted_initcalls))
|
|
return false;
|
|
|
|
addr = (unsigned long) dereference_function_descriptor(fn);
|
|
sprint_symbol_no_offset(fn_name, addr);
|
|
|
|
/*
|
|
* fn will be "function_name [module_name]" where [module_name] is not
|
|
* displayed for built-in init functions. Strip off the [module_name].
|
|
*/
|
|
strreplace(fn_name, ' ', '\0');
|
|
|
|
list_for_each_entry(entry, &blacklisted_initcalls, next) {
|
|
if (!strcmp(fn_name, entry->buf)) {
|
|
pr_debug("initcall %s blacklisted\n", fn_name);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
#else
|
|
static int __init initcall_blacklist(char *str)
|
|
{
|
|
pr_warn("initcall_blacklist requires CONFIG_KALLSYMS\n");
|
|
return 0;
|
|
}
|
|
|
|
static bool __init_or_module initcall_blacklisted(initcall_t fn)
|
|
{
|
|
return false;
|
|
}
|
|
#endif
|
|
__setup("initcall_blacklist=", initcall_blacklist);
|
|
|
|
static __init_or_module void
|
|
trace_initcall_start_cb(void *data, initcall_t fn)
|
|
{
|
|
ktime_t *calltime = (ktime_t *)data;
|
|
|
|
printk(KERN_DEBUG "calling %pF @ %i\n", fn, task_pid_nr(current));
|
|
*calltime = ktime_get();
|
|
}
|
|
|
|
static __init_or_module void
|
|
trace_initcall_finish_cb(void *data, initcall_t fn, int ret)
|
|
{
|
|
ktime_t *calltime = (ktime_t *)data;
|
|
ktime_t delta, rettime;
|
|
unsigned long long duration;
|
|
|
|
rettime = ktime_get();
|
|
delta = ktime_sub(rettime, *calltime);
|
|
duration = (unsigned long long) ktime_to_ns(delta) >> 10;
|
|
printk(KERN_DEBUG "initcall %pF returned %d after %lld usecs\n",
|
|
fn, ret, duration);
|
|
}
|
|
|
|
static ktime_t initcall_calltime;
|
|
|
|
#ifdef TRACEPOINTS_ENABLED
|
|
static void __init initcall_debug_enable(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = register_trace_initcall_start(trace_initcall_start_cb,
|
|
&initcall_calltime);
|
|
ret |= register_trace_initcall_finish(trace_initcall_finish_cb,
|
|
&initcall_calltime);
|
|
WARN(ret, "Failed to register initcall tracepoints\n");
|
|
}
|
|
# define do_trace_initcall_start trace_initcall_start
|
|
# define do_trace_initcall_finish trace_initcall_finish
|
|
#else
|
|
static inline void do_trace_initcall_start(initcall_t fn)
|
|
{
|
|
if (!initcall_debug)
|
|
return;
|
|
trace_initcall_start_cb(&initcall_calltime, fn);
|
|
}
|
|
static inline void do_trace_initcall_finish(initcall_t fn, int ret)
|
|
{
|
|
if (!initcall_debug)
|
|
return;
|
|
trace_initcall_finish_cb(&initcall_calltime, fn, ret);
|
|
}
|
|
#endif /* !TRACEPOINTS_ENABLED */
|
|
|
|
int __init_or_module do_one_initcall(initcall_t fn)
|
|
{
|
|
int count = preempt_count();
|
|
char msgbuf[64];
|
|
int ret;
|
|
|
|
if (initcall_blacklisted(fn))
|
|
return -EPERM;
|
|
|
|
do_trace_initcall_start(fn);
|
|
ret = fn();
|
|
do_trace_initcall_finish(fn, ret);
|
|
|
|
msgbuf[0] = 0;
|
|
|
|
if (preempt_count() != count) {
|
|
sprintf(msgbuf, "preemption imbalance ");
|
|
preempt_count_set(count);
|
|
}
|
|
if (irqs_disabled()) {
|
|
strlcat(msgbuf, "disabled interrupts ", sizeof(msgbuf));
|
|
local_irq_enable();
|
|
}
|
|
WARN(msgbuf[0], "initcall %pF returned with %s\n", fn, msgbuf);
|
|
|
|
add_latent_entropy();
|
|
return ret;
|
|
}
|
|
|
|
|
|
extern initcall_entry_t __initcall_start[];
|
|
extern initcall_entry_t __initcall0_start[];
|
|
extern initcall_entry_t __initcall1_start[];
|
|
extern initcall_entry_t __initcall2_start[];
|
|
extern initcall_entry_t __initcall3_start[];
|
|
extern initcall_entry_t __initcall4_start[];
|
|
extern initcall_entry_t __initcall5_start[];
|
|
extern initcall_entry_t __initcall6_start[];
|
|
extern initcall_entry_t __initcall7_start[];
|
|
extern initcall_entry_t __initcall_end[];
|
|
|
|
static initcall_entry_t *initcall_levels[] __initdata = {
|
|
__initcall0_start,
|
|
__initcall1_start,
|
|
__initcall2_start,
|
|
__initcall3_start,
|
|
__initcall4_start,
|
|
__initcall5_start,
|
|
__initcall6_start,
|
|
__initcall7_start,
|
|
__initcall_end,
|
|
};
|
|
|
|
/* Keep these in sync with initcalls in include/linux/init.h */
|
|
static char *initcall_level_names[] __initdata = {
|
|
"pure",
|
|
"core",
|
|
"postcore",
|
|
"arch",
|
|
"subsys",
|
|
"fs",
|
|
"device",
|
|
"late",
|
|
};
|
|
|
|
static void __init do_initcall_level(int level)
|
|
{
|
|
initcall_entry_t *fn;
|
|
|
|
strcpy(initcall_command_line, saved_command_line);
|
|
parse_args(initcall_level_names[level],
|
|
initcall_command_line, __start___param,
|
|
__stop___param - __start___param,
|
|
level, level,
|
|
NULL, &repair_env_string);
|
|
|
|
trace_initcall_level(initcall_level_names[level]);
|
|
for (fn = initcall_levels[level]; fn < initcall_levels[level+1]; fn++)
|
|
do_one_initcall(initcall_from_entry(fn));
|
|
}
|
|
|
|
static void __init do_initcalls(void)
|
|
{
|
|
int level;
|
|
|
|
for (level = 0; level < ARRAY_SIZE(initcall_levels) - 1; level++)
|
|
do_initcall_level(level);
|
|
}
|
|
|
|
/*
|
|
* Ok, the machine is now initialized. None of the devices
|
|
* have been touched yet, but the CPU subsystem is up and
|
|
* running, and memory and process management works.
|
|
*
|
|
* Now we can finally start doing some real work..
|
|
*/
|
|
static void __init do_basic_setup(void)
|
|
{
|
|
cpuset_init_smp();
|
|
shmem_init();
|
|
driver_init();
|
|
init_irq_proc();
|
|
do_ctors();
|
|
usermodehelper_enable();
|
|
do_initcalls();
|
|
}
|
|
|
|
static void __init do_pre_smp_initcalls(void)
|
|
{
|
|
initcall_entry_t *fn;
|
|
|
|
trace_initcall_level("early");
|
|
for (fn = __initcall_start; fn < __initcall0_start; fn++)
|
|
do_one_initcall(initcall_from_entry(fn));
|
|
}
|
|
|
|
/*
|
|
* This function requests modules which should be loaded by default and is
|
|
* called twice right after initrd is mounted and right before init is
|
|
* exec'd. If such modules are on either initrd or rootfs, they will be
|
|
* loaded before control is passed to userland.
|
|
*/
|
|
void __init load_default_modules(void)
|
|
{
|
|
load_default_elevator_module();
|
|
}
|
|
|
|
static int run_init_process(const char *init_filename)
|
|
{
|
|
argv_init[0] = init_filename;
|
|
pr_info("Run %s as init process\n", init_filename);
|
|
return do_execve(getname_kernel(init_filename),
|
|
(const char __user *const __user *)argv_init,
|
|
(const char __user *const __user *)envp_init);
|
|
}
|
|
|
|
static int try_to_run_init_process(const char *init_filename)
|
|
{
|
|
int ret;
|
|
|
|
ret = run_init_process(init_filename);
|
|
|
|
if (ret && ret != -ENOENT) {
|
|
pr_err("Starting init: %s exists but couldn't execute it (error %d)\n",
|
|
init_filename, ret);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static noinline void __init kernel_init_freeable(void);
|
|
|
|
#if defined(CONFIG_STRICT_KERNEL_RWX) || defined(CONFIG_STRICT_MODULE_RWX)
|
|
bool rodata_enabled __ro_after_init = true;
|
|
static int __init set_debug_rodata(char *str)
|
|
{
|
|
if (strtobool(str, &rodata_enabled))
|
|
pr_warn("Invalid option string for rodata: '%s'\n", str);
|
|
return 1;
|
|
}
|
|
__setup("rodata=", set_debug_rodata);
|
|
#endif
|
|
|
|
#ifdef CONFIG_STRICT_KERNEL_RWX
|
|
static void mark_readonly(void)
|
|
{
|
|
if (rodata_enabled) {
|
|
/*
|
|
* load_module() results in W+X mappings, which are cleaned up
|
|
* with call_rcu_sched(). Let's make sure that queued work is
|
|
* flushed so that we don't hit false positives looking for
|
|
* insecure pages which are W+X.
|
|
*/
|
|
rcu_barrier_sched();
|
|
mark_rodata_ro();
|
|
rodata_test();
|
|
} else
|
|
pr_info("Kernel memory protection disabled.\n");
|
|
}
|
|
#else
|
|
static inline void mark_readonly(void)
|
|
{
|
|
pr_warn("This architecture does not have kernel memory protection.\n");
|
|
}
|
|
#endif
|
|
|
|
static int __ref kernel_init(void *unused)
|
|
{
|
|
int ret;
|
|
|
|
kernel_init_freeable();
|
|
/* need to finish all async __init code before freeing the memory */
|
|
async_synchronize_full();
|
|
ftrace_free_init_mem();
|
|
jump_label_invalidate_initmem();
|
|
free_initmem();
|
|
mark_readonly();
|
|
|
|
/*
|
|
* Kernel mappings are now finalized - update the userspace page-table
|
|
* to finalize PTI.
|
|
*/
|
|
pti_finalize();
|
|
|
|
system_state = SYSTEM_RUNNING;
|
|
numa_default_policy();
|
|
|
|
rcu_end_inkernel_boot();
|
|
|
|
if (ramdisk_execute_command) {
|
|
ret = run_init_process(ramdisk_execute_command);
|
|
if (!ret)
|
|
return 0;
|
|
pr_err("Failed to execute %s (error %d)\n",
|
|
ramdisk_execute_command, ret);
|
|
}
|
|
|
|
/*
|
|
* We try each of these until one succeeds.
|
|
*
|
|
* The Bourne shell can be used instead of init if we are
|
|
* trying to recover a really broken machine.
|
|
*/
|
|
if (execute_command) {
|
|
ret = run_init_process(execute_command);
|
|
if (!ret)
|
|
return 0;
|
|
panic("Requested init %s failed (error %d).",
|
|
execute_command, ret);
|
|
}
|
|
if (!try_to_run_init_process("/sbin/init") ||
|
|
!try_to_run_init_process("/etc/init") ||
|
|
!try_to_run_init_process("/bin/init") ||
|
|
!try_to_run_init_process("/bin/sh"))
|
|
return 0;
|
|
|
|
panic("No working init found. Try passing init= option to kernel. "
|
|
"See Linux Documentation/admin-guide/init.rst for guidance.");
|
|
}
|
|
|
|
static noinline void __init kernel_init_freeable(void)
|
|
{
|
|
/*
|
|
* Wait until kthreadd is all set-up.
|
|
*/
|
|
wait_for_completion(&kthreadd_done);
|
|
|
|
/* Now the scheduler is fully set up and can do blocking allocations */
|
|
gfp_allowed_mask = __GFP_BITS_MASK;
|
|
|
|
/*
|
|
* init can allocate pages on any node
|
|
*/
|
|
set_mems_allowed(node_states[N_MEMORY]);
|
|
|
|
cad_pid = get_pid(task_pid(current));
|
|
|
|
smp_prepare_cpus(setup_max_cpus);
|
|
|
|
workqueue_init();
|
|
|
|
init_mm_internals();
|
|
|
|
do_pre_smp_initcalls();
|
|
lockup_detector_init();
|
|
|
|
smp_init();
|
|
sched_init_smp();
|
|
|
|
page_alloc_init_late();
|
|
/* Initialize page ext after all struct pages are initialized. */
|
|
page_ext_init();
|
|
|
|
do_basic_setup();
|
|
|
|
/* Open the /dev/console on the rootfs, this should never fail */
|
|
if (ksys_open((const char __user *) "/dev/console", O_RDWR, 0) < 0)
|
|
pr_err("Warning: unable to open an initial console.\n");
|
|
|
|
(void) ksys_dup(0);
|
|
(void) ksys_dup(0);
|
|
/*
|
|
* check if there is an early userspace init. If yes, let it do all
|
|
* the work
|
|
*/
|
|
|
|
if (!ramdisk_execute_command)
|
|
ramdisk_execute_command = "/init";
|
|
|
|
if (ksys_access((const char __user *)
|
|
ramdisk_execute_command, 0) != 0) {
|
|
ramdisk_execute_command = NULL;
|
|
prepare_namespace();
|
|
}
|
|
|
|
/*
|
|
* Ok, we have completed the initial bootup, and
|
|
* we're essentially up and running. Get rid of the
|
|
* initmem segments and start the user-mode stuff..
|
|
*
|
|
* rootfs is available now, try loading the public keys
|
|
* and default modules
|
|
*/
|
|
|
|
integrity_load_keys();
|
|
load_default_modules();
|
|
}
|