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android_kernel_motorola_sm6225/drivers
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Mike Marciniszyn f3bdf34465 IB/qib: Fix lockdep splat in qib_alloc_lkey() 
The following backtrace is reported with CONFIG_PROVE_RCU:

    drivers/infiniband/hw/qib/qib_keys.c:64 suspicious rcu_dereference_check() usage!
    other info that might help us debug this:
    rcu_scheduler_active = 1, debug_locks = 1
    4 locks held by kworker/0:1/56:
    #0:  (events){.+.+.+}, at: [<ffffffff8107a4f5>] process_one_work+0x165/0x4a0
    #1:  ((&wfc.work)){+.+.+.}, at: [<ffffffff8107a4f5>] process_one_work+0x165/0x4a0
    #2:  (device_mutex){+.+.+.}, at: [<ffffffffa0148dd8>] ib_register_device+0x38/0x220 [ib_core]
    #3:  (&(&dev->lk_table.lock)->rlock){......}, at: [<ffffffffa017e81c>] qib_alloc_lkey+0x3c/0x1b0 [ib_qib]

    stack backtrace:
    Pid: 56, comm: kworker/0:1 Not tainted 3.10.0-rc1+ #6
    Call Trace:
    [<ffffffff810c0b85>] lockdep_rcu_suspicious+0xe5/0x130
    [<ffffffffa017e8e1>] qib_alloc_lkey+0x101/0x1b0 [ib_qib]
    [<ffffffffa0184886>] qib_get_dma_mr+0xa6/0xd0 [ib_qib]
    [<ffffffffa01461aa>] ib_get_dma_mr+0x1a/0x50 [ib_core]
    [<ffffffffa01678dc>] ib_mad_port_open+0x12c/0x390 [ib_mad]
    [<ffffffff810c2c55>] ?  trace_hardirqs_on_caller+0x105/0x190
    [<ffffffffa0167b92>] ib_mad_init_device+0x52/0x110 [ib_mad]
    [<ffffffffa01917c0>] ?  sl2vl_attr_show+0x30/0x30 [ib_qib]
    [<ffffffffa0148f49>] ib_register_device+0x1a9/0x220 [ib_core]
    [<ffffffffa01b1685>] qib_register_ib_device+0x735/0xa40 [ib_qib]
    [<ffffffff8106ba98>] ? mod_timer+0x118/0x220
    [<ffffffffa017d425>] qib_init_one+0x1e5/0x400 [ib_qib]
    [<ffffffff812ce86e>] local_pci_probe+0x4e/0x90
    [<ffffffff81078118>] work_for_cpu_fn+0x18/0x30
    [<ffffffff8107a566>] process_one_work+0x1d6/0x4a0
    [<ffffffff8107a4f5>] ?  process_one_work+0x165/0x4a0
    [<ffffffff8107c9c9>] worker_thread+0x119/0x370
    [<ffffffff8107c8b0>] ?  manage_workers+0x180/0x180
    [<ffffffff8108294e>] kthread+0xee/0x100
    [<ffffffff81082860>] ?  __init_kthread_worker+0x70/0x70
    [<ffffffff815c04ac>] ret_from_fork+0x7c/0xb0
    [<ffffffff81082860>] ?  __init_kthread_worker+0x70/0x70

Per Documentation/RCU/lockdep-splat.txt, the code now uses rcu_access_pointer()
vs. rcu_dereference().

Reported-by: Jay Fenlason <fenlason@redhat.com>
Reviewed-by: Dean Luick <dean.luick@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2013-06-04 17:05:20 -07:00
..
accessibility
acpi aerdrv: Move cper_print_aer() call out of interrupt context 2013-05-30 10:51:20 -07:00
amba
ata drivers/ata: don't check resource with devm_ioremap_resource 2013-05-12 15:19:46 +02:00
atm atm: he: use mdelay instead of large udelay constants 2013-04-29 13:26:48 -04:00
auxdisplay
base Driver core fixes for 3.10-rc2 2013-05-23 09:27:08 -07:00
bcma bcma: add more core IDs 2013-05-17 14:31:05 -04:00
block drivers/block/brd.c: fix brd_lookup_page() race 2013-05-24 16:22:52 -07:00
bluetooth Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2013-05-01 14:08:52 -07:00
bus
cdrom block_device_operations->release() should return void 2013-05-07 02:16:21 -04:00
char random: fix accounting race condition with lockless irq entropy_count update 2013-05-24 16:22:52 -07:00
clk clk: mxs: Include clk mxs header file 2013-05-30 18:27:24 -07:00
clocksource ARM: late Exynos multiplatform changes 2013-05-07 11:28:42 -07:00
connector
cpufreq Power management and ACPI fixes for 3.10-rc3 2013-05-25 20:32:00 -07:00
cpuidle cpuidle: add maintainer entry 2013-04-26 22:30:25 +02:00
crypto Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2013-05-28 10:09:38 -07:00
dca
devfreq
dio
dma Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma 2013-05-25 20:30:31 -07:00
edac amd64_edac: Fix bogus sysfs file permissions 2013-05-21 09:13:11 +02:00
eisa PCI changes for the v3.10 merge window: 2013-04-29 09:30:25 -07:00
extcon Removal of GENERIC_GPIO for v3.10 2013-05-09 09:59:16 -07:00
firewire IEEE 1394 (FireWire) subsystem changes: 2013-05-09 10:11:48 -07:00
firmware efivar: fix oops in efivar_update_sysfs_entries() caused by memory reuse 2013-05-13 20:20:02 +01:00
gpio GPIO fixes for the v3.10 series: 2013-05-23 18:24:10 -07:00
gpu fbdev: fixes for 3.10-rc4 2013-06-01 19:53:41 +09:00
hid HID: debug: fix RCU preemption issue 2013-05-06 13:07:33 +02:00
hsi
hv Drivers: hv: Fix a bug in get_vp_index() 2013-05-21 09:56:55 -07:00
hwmon hwmon: (tmp401) Drop redundant safety on cache lifetime 2013-05-19 08:19:29 -07:00
hwspinlock A single patch from Vincent extending OMAP's hwspinlock support to OMAP5. 2013-05-07 14:01:27 -07:00
i2c Merge branch 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2013-05-21 11:11:45 -07:00
ide block_device_operations->release() should return void 2013-05-07 02:16:21 -04:00
idle Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux 2013-05-11 15:23:17 -07:00
iio iio: exynos_adc: fix wrong structure extration in suspend and resume 2013-05-22 22:15:20 +01:00
infiniband IB/qib: Fix lockdep splat in qib_alloc_lkey() 2013-06-04 17:05:20 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2013-05-23 13:50:03 -07:00
iommu IOMMU Updates for Linux v3.10 2013-05-06 14:59:13 -07:00
ipack
irqchip ARM: late Exynos multiplatform changes 2013-05-07 11:28:42 -07:00
isdn isdn/kcapi: fix a small underflow 2013-05-20 13:38:14 -07:00
leds drivers/leds/leds-ot200.c: fix error caused by shifted mask 2013-05-24 16:22:51 -07:00
lguest lguest: clear cached last cpu when guest_set_pgd() called. 2013-05-08 10:49:18 +09:30
macintosh Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2013-05-02 10:16:16 -07:00
mailbox
md dm thin: fix metadata dev resize detection 2013-05-19 18:57:50 +01:00
media fbdev: fixes for 3.10-rc4 2013-06-01 19:53:41 +09:00
memory drivers/memory: don't check resource with devm_ioremap_resource 2013-05-18 11:55:52 +02:00
memstick block_device_operations->release() should return void 2013-05-07 02:16:21 -04:00
message Merge branch 'for-3.10/core' of git://git.kernel.dk/linux-block 2013-05-08 10:13:35 -07:00
mfd This is the first batch of MFD fixes for 3.10. 2013-05-22 07:18:41 -07:00
misc char/misc driver fixes for 3.10-rc2 2013-05-23 09:26:32 -07:00
mmc Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm 2013-05-15 13:37:54 -07:00
mtd drivers/mtd/nand: don't check resource with devm_ioremap_resource 2013-05-18 11:55:55 +02:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-05-24 08:27:32 -07:00
nfc
ntb NTB: Multiple NTB client fix 2013-05-15 10:58:22 -07:00
nubus nubus: Kill nubus_proc_detach_device() 2013-05-04 14:47:26 -04:00
of Device tree bug fixes and documentation updates for v3.10 2013-05-18 10:46:50 -07:00
oprofile
parisc parisc/PCI: lba: fix: convert to pci_create_root_bus() for correct root bus resources (v2) 2013-06-01 14:44:25 +02:00
parport parisc: parport0: fix this legacy no-device port driver! 2013-06-01 14:46:42 +02:00
pci aerdrv: Move cper_print_aer() call out of interrupt context 2013-05-30 10:51:20 -07:00
pcmcia
pinctrl pinctrl: pinconf: take the right mutex 2013-05-27 15:53:32 +02:00
platform - Artem's removal of dead code continues (RPX, MBX860) 2013-05-10 09:09:47 -07:00
pnp Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2013-05-02 10:16:16 -07:00
power Last minute one-liners: wrong kfree usage fix, module alias fixup and 2013-05-25 20:32:49 -07:00
pps Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-05-01 17:51:54 -07:00
ps3
ptp
pwm drivers/pwm: don't check resource with devm_ioremap_resource 2013-05-18 11:55:58 +02:00
rapidio rapidio/tsi721: fix bug in MSI interrupt handling 2013-05-24 16:22:51 -07:00
regulator Removal of GENERIC_GPIO for v3.10 2013-05-09 09:59:16 -07:00
remoteproc This pull request contains: 2013-05-07 14:04:56 -07:00
reset
rpmsg A small pull request consisting of: 2013-05-07 14:02:00 -07:00
rtc drivers/rtc/rtc-max8998.c: check for pdata presence before dereferencing 2013-05-24 16:22:53 -07:00
s390 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 2013-05-21 09:36:46 -07:00
sbus
scsi Merge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 2013-06-01 20:05:20 +09:00
sfi
sh
sn
spi Merge branch 'devm_no_resource_check' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2013-05-18 10:54:54 -07:00
ssb - Lots of cleanups from Artem, including deletion of some obsolete drivers 2013-05-09 10:15:46 -07:00
ssbi
staging Merge remote-tracking branch 'pfdo/drm-fixes' into drm-next 2013-05-24 10:12:22 +10:00
target iscsi-target: Fix iscsit_free_cmd() se_cmd->cmd_kref shutdown handling 2013-05-31 01:21:28 -07:00
tc
thermal drivers/thermal: don't check resource with devm_ioremap_resource 2013-05-18 11:57:30 +02:00
tty ARM: SoC fixes for 3.10-rc 2013-05-24 16:27:37 -07:00
uio uio: UIO_DMEM_GENIRQ should depend on HAS_DMA 2013-05-21 10:13:23 -07:00
usb USB fixes for 3.10-rc2 2013-05-23 09:23:32 -07:00
uwb uwb: rename random32() to prandom_u32() 2013-04-29 18:28:43 -07:00
vfio vfio updates for v3.10 2013-05-02 14:02:32 -07:00
vhost Add missing module license tag to vring helpers. 2013-05-08 10:49:03 +09:30
video atmel_lcdfb: blank the backlight on remove 2013-06-01 03:18:55 +08:00
virt
virtio
vlynq
vme
w1 drivers/w1/masters: don't check resource with devm_ioremap_resource 2013-05-18 11:58:03 +02:00
watchdog drivers/watchdog: don't check resource with devm_ioremap_resource 2013-05-18 11:58:04 +02:00
xen xenbus_client.c: correct exit path for xenbus_map_ring_valloc_hvm 2013-05-29 15:24:55 -04:00
zorro proc: Supply PDE attribute setting accessor functions 2013-05-01 17:29:18 -04:00
Kconfig ARM: arm-soc driver changes for 3.10 2013-05-04 12:31:18 -07:00
Makefile ARM: arm-soc driver changes for 3.10 2013-05-04 12:31:18 -07:00