Wei Fang 72d8c36ec3 scsi: fix race between simultaneous decrements of ->host_failed ... sas_ata_strategy_handler() adds the works of the ata error handler to system_unbound_wq. This workqueue asynchronously runs work items, so the ata error handler will be performed concurrently on different CPUs. In this case, ->host_failed will be decreased simultaneously in scsi_eh_finish_cmd() on different CPUs, and become abnormal. It will lead to permanently inequality between ->host_failed and ->host_busy, and scsi error handler thread won't start running. IO errors after that won't be handled. Since all scmds must have been handled in the strategy handler, just remove the decrement in scsi_eh_finish_cmd() and zero ->host_busy after the strategy handler to fix this race. Fixes: 50824d6c56 ("[SCSI] libsas: async ata-eh") Cc: stable@vger.kernel.org Signed-off-by: Wei Fang <fangwei1@huawei.com> Reviewed-by: James Bottomley <jejb@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>		2016-06-08 23:08:04 -04:00
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accessibility	…
acpi	Merge branches 'acpi-pci', 'acpi-misc' and 'acpi-tools'	2016-05-16 16:45:48 +02:00
amba	…
android	…
ata	scsi: fix race between simultaneous decrements of ->host_failed	2016-06-08 23:08:04 -04:00
atm	…
auxdisplay	…
base	Generic device properties framework update for v4.7-rc1	2016-05-16 19:51:04 -07:00
bcma	…
block	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2016-05-17 16:26:30 -07:00
bluetooth	Bluetooth: Add USB ID 13D3:3487 to ath3k	2016-05-13 16:54:59 +02:00
bus	ARM: SoC driver updates for v4.7	2016-05-18 13:14:02 -07:00
cdrom	…
char	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2016-05-17 16:26:30 -07:00
clk	ARM: SoC driver updates for v4.7	2016-05-18 13:14:02 -07:00
clocksource	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-05-17 09:49:28 -07:00
connector	…
cpufreq	Power management material for v4.7-rc1	2016-05-16 19:17:22 -07:00
cpuidle	Merge back new cpuidle material for v4.7.	2016-05-06 22:08:46 +02:00
crypto	crypto: qat - change the adf_ctl_stop_devices to void	2016-05-13 17:30:18 +08:00
dca	…
devfreq	PM / devfreq: style/typo fixes	2016-05-03 11:22:10 +09:00
dio	…
dma	…
dma-buf	…
edac	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2016-05-17 17:05:30 -07:00
eisa	…
extcon	…
firewire	treewide: replace dev->trans_start update with helper	2016-05-04 14:16:49 -04:00
firmware	Merge branch 'stable/for-linus-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/ibft	2016-05-18 15:30:04 -07:00
fmc	…
fpga	…
gpio	This is the bulk of GPIO changes for kernel cycle v4.7:	2016-05-17 17:39:42 -07:00
gpu	ARM: SoC driver updates for v4.7	2016-05-18 13:14:02 -07:00
hid	Merge branch 'for-4.7/wacom' into for-linus	2016-05-17 12:42:27 +02:00
hsi	…
hv	Drivers: hv: vmbus: Fix signaling logic in hv_need_to_signal_on_read()	2016-04-30 14:05:44 -07:00
hwmon	…
hwspinlock	…
hwtracing	…
i2c	…
ide	…
idle	…
iio	iio: imu: mpu6050: Fix name/chip_id when using ACPI	2016-05-04 08:44:27 +01:00
infiniband	SCSI misc on 20160517	2016-05-18 16:38:59 -07:00
input	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input	2016-05-18 17:12:23 -07:00
iommu	Linux 4.6-rc6	2016-05-05 08:35:00 +02:00
ipack	…
irqchip	ARM: SoC platform updates for v4.7	2016-05-18 12:35:46 -07:00
isdn	ISDN: eicon: replace custom hex_asc_lo() / hex_pack_byte()	2016-05-08 23:52:13 -04:00
leds	leds: gpio: Support the "panic-indicator" firmware property	2016-05-06 10:26:07 +02:00
lguest	…
lightnvm	lightnvm: reserved space calculation incorrect	2016-05-06 12:51:10 -06:00
macintosh	…
mailbox	…
mcb	…
md	- based on Jens' 'for-4.7/core' to have DM thinp's discard support use	2016-05-17 16:13:00 -07:00
media	media updates for v4.7-rc1	2016-05-18 17:03:51 -07:00
memory	…
memstick	memstick: trivial fix of spelling mistake on management	2016-04-28 10:58:33 +02:00
message	SCSI misc on 20160517	2016-05-18 16:38:59 -07:00
mfd	This is the bulk of GPIO changes for kernel cycle v4.7:	2016-05-17 17:39:42 -07:00
misc	Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2016-05-16 16:46:03 -07:00
mmc	Merge branch 'for-4.7/drivers' of git://git.kernel.dk/linux-block	2016-05-17 16:03:32 -07:00
mtd	ARM: SoC driver updates for v4.7	2016-05-18 13:14:02 -07:00
net	iwlwifi: fix mis-merge that breaks the driver	2016-05-18 12:11:22 -07:00
nfc	NFC: pn533: handle interrupted commands in pn533_recv_frame	2016-05-10 00:01:47 +02:00
ntb	…
nubus	…
nvdimm	libnvdimm, pfn: fix ARCH=alpha allmodconfig build failure	2016-05-06 10:20:10 -07:00
nvme	Merge branch 'for-4.7/drivers' of git://git.kernel.dk/linux-block	2016-05-17 16:03:32 -07:00
nvmem	nvmem: mxs-ocotp: fix buffer overflow in read	2016-05-02 08:18:01 -07:00
of	ARM: SoC cleanups and fixes for v4.7	2016-05-18 12:28:29 -07:00
oprofile	…
parisc	…
parport	…
pci	ARM: SoC driver updates for v4.7	2016-05-18 13:14:02 -07:00
pcmcia	…
perf	perf/arm: Special-case hetereogeneous CPUs	2016-05-05 10:13:59 +02:00
phy	ARM: SoC driver updates for v4.7	2016-05-18 13:14:02 -07:00
pinctrl	ARM: SoC driver updates for v4.7	2016-05-18 13:14:02 -07:00
platform	This is the bulk of GPIO changes for kernel cycle v4.7:	2016-05-17 17:39:42 -07:00
pnp	…
power	PM / AVS: rockchip-io: make io-domains a child of the GRF	2016-04-26 19:12:28 +02:00
powercap	Power management material for v4.7-rc1	2016-05-16 19:17:22 -07:00
pps	…
ps3	…
ptp	…
pwm	Merge remote-tracking branches 'regulator/topic/pwm', 'regulator/topic/qcom-spmi', 'regulator/topic/rk808' and 'regulator/topic/s2mps11' into regulator-next	2016-05-13 14:23:46 +01:00
rapidio	rapidio/mport_cdev: fix uapi type definitions	2016-05-05 17:38:53 -07:00
ras	…
regulator	Merge remote-tracking branches 'regulator/topic/tps6524x' and 'regulator/topic/twl' into regulator-next	2016-05-13 14:23:49 +01:00
remoteproc	remoteproc: Add additional crash reasons	2016-05-12 15:50:19 -07:00
reset	…
rpmsg	rpmsg: add THIS_MODULE to rpmsg_driver in rpmsg core	2016-05-06 11:08:58 -07:00
rtc	…
s390	SCSI misc on 20160517	2016-05-18 16:38:59 -07:00
sbus	…
scsi	scsi: fix race between simultaneous decrements of ->host_failed	2016-06-08 23:08:04 -04:00
sfi	…
sh	…
sn	…
soc	ARM: SoC driver updates for v4.7	2016-05-18 13:14:02 -07:00
spi	Merge remote-tracking branches 'spi/fix/fsl-dspi', 'spi/fix/omap2-mcspi', 'spi/fix/pxa2xx' and 'spi/fix/ti-qspi' into spi-linus	2016-05-06 18:20:37 +01:00
spmi	…
ssb	ssb: gpio_driver: use gpiochip data pointer	2016-04-26 15:34:49 +02:00
staging	media updates for v4.7-rc1	2016-05-18 17:03:51 -07:00
target	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial	2016-05-17 17:05:30 -07:00
tc	…
thermal	Thermal / ACPI / video: add INT3406 thermal driver	2016-05-11 02:15:31 +02:00
thunderbolt	…
tty	This is the bulk of GPIO changes for kernel cycle v4.7:	2016-05-17 17:39:42 -07:00
uio	…
usb	SCSI misc on 20160517	2016-05-18 16:38:59 -07:00
uwb	…
vfio	…
vhost	…
video	ACPI material for v4.7-rc1	2016-05-16 19:41:41 -07:00
virt	…
virtio	virtio: Silence uninitialized variable warning	2016-05-01 15:50:08 +03:00
vlynq	…
vme	…
w1	…
watchdog	treewide: Fix typos in printk	2016-04-28 10:52:28 +02:00
xen	Merge branch 'linus' into efi/core, to pick up fixes	2016-05-07 07:00:07 +02:00
zorro	…
Kconfig	…
Makefile	…