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Dave Carroll 1c6b41fb92 scsi: aacraid: Insure command thread is not recursively stopped 
If a recursive IOP_RESET is invoked, usually due to the eh_thread
handling errors after the first reset, be sure we flag that the command
thread has been stopped to avoid an Oops of the form;

 [ 336.620256] CPU: 28 PID: 1193 Comm: scsi_eh_0 Kdump: loaded Not tainted 4.14.0-49.el7a.ppc64le #1
 [ 336.620297] task: c000003fd630b800 task.stack: c000003fd61a4000
 [ 336.620326] NIP: c000000000176794 LR: c00000000013038c CTR: c00000000024bc10
 [ 336.620361] REGS: c000003fd61a7720 TRAP: 0300 Not tainted (4.14.0-49.el7a.ppc64le)
 [ 336.620395] MSR: 9000000000009033 <SF,HV,EE,ME,IR,DR,RI,LE> CR: 22084022 XER: 20040000
 [ 336.620435] CFAR: c000000000130388 DAR: 0000000000000000 DSISR: 40000000 SOFTE: 1
 [ 336.620435] GPR00: c00000000013038c c000003fd61a79a0 c0000000014c7e00 0000000000000000
 [ 336.620435] GPR04: 000000000000000c 000000000000000c 9000000000009033 0000000000000477
 [ 336.620435] GPR08: 0000000000000477 0000000000000000 0000000000000000 c008000010f7d940
 [ 336.620435] GPR12: c00000000024bc10 c000000007a33400 c0000000001708a8 c000003fe3b881d8
 [ 336.620435] GPR16: c000003fe3b88060 c000003fd61a7d10 fffffffffffff000 000000000000001e
 [ 336.620435] GPR20: 0000000000000001 c000000000ebf1a0 0000000000000001 c000003fe3b88000
 [ 336.620435] GPR24: 0000000000000003 0000000000000002 c000003fe3b88840 c000003fe3b887e8
 [ 336.620435] GPR28: c000003fe3b88000 c000003fc8181788 0000000000000000 c000003fc8181700
 [ 336.620750] NIP [c000000000176794] exit_creds+0x34/0x160
 [ 336.620775] LR [c00000000013038c] __put_task_struct+0x8c/0x1f0
 [ 336.620804] Call Trace:
 [ 336.620817] [c000003fd61a79a0] [c000003fe3b88000] 0xc000003fe3b88000 (unreliable)
 [ 336.620853] [c000003fd61a79d0] [c00000000013038c] __put_task_struct+0x8c/0x1f0
 [ 336.620889] [c000003fd61a7a00] [c000000000171418] kthread_stop+0x1e8/0x1f0
 [ 336.620922] [c000003fd61a7a40] [c008000010f7448c] aac_reset_adapter+0x14c/0x8d0 [aacraid]
 [ 336.620959] [c000003fd61a7b00] [c008000010f60174] aac_eh_host_reset+0x84/0x100 [aacraid]
 [ 336.621010] [c000003fd61a7b30] [c000000000864f24] scsi_try_host_reset+0x74/0x180
 [ 336.621046] [c000003fd61a7bb0] [c000000000867ac0] scsi_eh_ready_devs+0xc00/0x14d0
 [ 336.625165] [c000003fd61a7ca0] [c0000000008699e0] scsi_error_handler+0x550/0x730
 [ 336.632101] [c000003fd61a7dc0] [c000000000170a08] kthread+0x168/0x1b0
 [ 336.639031] [c000003fd61a7e30] [c00000000000b528] ret_from_kernel_thread+0x5c/0xb4
 [ 336.645971] Instruction dump:
 [ 336.648743] 384216a0 7c0802a6 fbe1fff8 f8010010 f821ffd1 7c7f1b78 60000000 60000000
 [ 336.657056] 39400000 e87f0838 f95f0838 7c0004ac <7d401828> 314affff 7d40192d 40c2fff4
 [ 336.663997] -[ end trace 4640cf8d4945ad95 ]-

So flag when the thread is stopped by setting the thread pointer to NULL.

Signed-off-by: Dave Carroll <david.carroll@microsemi.com>
Reviewed-by: Raghava Aditya Renukunta <raghavaaditya.renukunta@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
 		2018-04-09 21:08:30 -04:00
..
accessibility
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acpi pci-v4.17-changes 2018-04-06 18:31:06 -07:00
amba
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android
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ata Merge branch 'for-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata 2018-04-03 17:42:25 -07:00
atm Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-04-01 19:49:34 -04:00
auxdisplay
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base mm/memory_hotplug: optimize memory hotplug 2018-04-05 21:36:25 -07:00
bcma
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block Merge branch 'akpm' (patches from Andrew) 2018-04-06 14:19:26 -07:00
bluetooth Bluetooth: Set HCI_QUIRK_SIMULTANEOUS_DISCOVERY for BTUSB_QCA_ROME 2018-04-01 21:43:02 +03:00
bus pci-v4.17-changes 2018-04-06 18:31:06 -07:00
cdrom
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char Merge branch 'next-tpm' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2018-04-07 16:46:56 -07:00
clk ARM: SoC driver updates for 4.17 2018-04-05 21:29:35 -07:00
clocksource ARM: SoC platform updates for 4.17 2018-04-05 21:21:08 -07:00
connector
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cpufreq ARM: SoC driver updates for 4.17 2018-04-05 21:29:35 -07:00
cpuidle cpuidle: poll_state: Avoid invoking local_clock() too often 2018-03-29 13:06:08 +02:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2018-04-04 17:11:08 -07:00
dax device-dax: implement ->pagesize() for smaps to report MMUPageSize 2018-04-05 21:36:26 -07:00
dca
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devfreq
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dio
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dma dmaengine: stm32-dmamux: fix a potential buffer overflow 2018-03-22 10:51:35 +05:30
dma-buf
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edac * Add NVDIMM support to EDAC (Tony Luck) 2018-04-05 14:21:13 -07:00
eisa
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extcon Char/Misc patches for 4.17-rc1 2018-04-04 20:07:20 -07:00
firewire
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firmware fw_cfg, vhost: features fixes 2018-04-06 19:21:41 -07:00
fmc treewide: Fix typos in printk 2018-03-27 09:51:22 +02:00
fpga PCI: Add Altera vendor ID 2018-03-19 14:18:22 -05:00
fsi
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gpio DeviceTree updates for 4.17: 2018-04-05 21:03:42 -07:00
gpu treewide: fix up files incorrectly marked executable 2018-04-07 13:31:23 -07:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid 2018-04-05 11:53:34 -07:00
hsi HSI: hsi_char: Delete an error message for a failed memory allocation in hsc_probe() 2018-03-19 16:31:07 +01:00
hv hv: add SPDX license id to Kconfig 2018-03-28 13:24:56 +02:00
hwmon ARM SCMI fixes/cleanups for v4.17 2018-03-27 15:57:19 +02:00
hwspinlock
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hwtracing Char/Misc patches for 4.17-rc1 2018-04-04 20:07:20 -07:00
i2c Merge branch 'i2c/for-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2018-04-07 12:36:18 -07:00
ide for-4.17/block-20180402 2018-04-05 14:27:02 -07:00
idle
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iio This is the bulk of GPIO changes for the v4.17 kernel cycle: 2018-04-05 09:51:41 -07:00
infiniband Merge candidates for 4.17 merge window 2018-04-06 17:35:43 -07:00
input Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2018-04-05 13:21:57 -07:00
iommu headers: untangle kmemleak.h from mm.h 2018-04-05 21:36:27 -07:00
ipack
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irqchip Staging/IIO patches for 4.17-rc1 2018-04-04 18:56:27 -07:00
isdn Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-04-03 14:04:18 -07:00
leds leds: Fix wrong dmi_match on PC Engines APU LEDs 2018-03-20 20:28:00 +01:00
lightnvm lightnvm: pblk: remove some unnecessary NULL checks 2018-03-29 17:29:09 -06:00
macintosh powerpc updates for 4.17 2018-04-07 12:08:19 -07:00
mailbox mailbox: Add support for Hi3660 mailbox 2018-03-20 11:15:54 +08:00
mcb mcb: Add Altera PCI ID to mcb-pci 2018-03-19 14:20:24 -05:00
md - DM core passthrough ioctl fix to retain reference to DM table, and 2018-04-06 11:50:19 -07:00
media Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-04-06 11:07:08 -07:00
memory
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memstick
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message treewide: Align function definition open/close braces 2018-03-26 11:13:09 +02:00
mfd
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misc powerpc updates for 4.17 2018-04-07 12:08:19 -07:00
mmc for-4.17/block-20180402 2018-04-05 14:27:02 -07:00
mtd MTD changes: 2018-04-06 12:15:41 -07:00
mux
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net treewide: fix up files incorrectly marked executable 2018-04-07 13:31:23 -07:00
nfc
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ntb
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nubus
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nvdimm for-4.17/block-20180402 2018-04-05 14:27:02 -07:00
nvme for-4.17/block-20180402 2018-04-05 14:27:02 -07:00
nvmem Char/Misc patches for 4.17-rc1 2018-04-04 20:07:20 -07:00
of pci-v4.17-changes 2018-04-06 18:31:06 -07:00
opp
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oprofile oprofilefs: don't oops on allocation failure 2018-03-29 15:07:48 -04:00
parisc parisc/pci: Switch LBA PCI bus from Hard Fail to Soft Fail mode 2018-03-27 18:52:22 +02:00
parport Char/Misc patches for 4.17-rc1 2018-04-04 20:07:20 -07:00
pci powerpc updates for 4.17 2018-04-07 12:08:19 -07:00
pcmcia Power management updates for 4.17-rc1 2018-04-03 10:45:39 -07:00
perf ARM: SoC driver updates for 4.17 2018-04-05 21:29:35 -07:00
phy ARM: SoC platform updates for 4.17 2018-04-05 21:21:08 -07:00
pinctrl This is the bulk of GPIO changes for the v4.17 kernel cycle: 2018-04-05 09:51:41 -07:00
platform Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2018-04-05 11:56:35 -07:00
pnp
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power ARM: SoC platform updates for 4.17 2018-04-05 21:21:08 -07:00
powercap
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pps
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ps3
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ptp
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pwm ARM: SoC platform updates for 4.17 2018-04-05 21:21:08 -07:00
rapidio
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ras
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regulator Merge remote-tracking branches 'regulator/topic/88pg86x', 'regulator/topic/dt', 'regulator/topic/formatting' and 'regulator/topic/gpio' into regulator-next 2018-03-28 10:33:53 +08:00
remoteproc
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reset Merge branch 'reset/lookup' into reset/next 2018-03-27 11:03:43 +02:00
rpmsg
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rtc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2018-04-05 11:56:35 -07:00
s390 for-4.17/block-20180402 2018-04-05 14:27:02 -07:00
sbus sparc64: Properly range check DAX completion index 2018-04-01 20:07:00 -04:00
scsi scsi: aacraid: Insure command thread is not recursively stopped 2018-04-09 21:08:30 -04:00
sfi
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sh
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siox
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slimbus
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sn
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soc ARM: SoC driver updates for 4.17 2018-04-05 21:29:35 -07:00
soundwire
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spi spi: SPI updates for v4.17 2018-04-03 12:06:21 -07:00
spmi
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ssb
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staging Merge branch 'akpm' (patches from Andrew) 2018-04-06 14:19:26 -07:00
target for-4.17/block-20180402 2018-04-05 14:27:02 -07:00
tc
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tee
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thermal
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thunderbolt
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tty TTY/Serial driver patches for 4.17-rc1 2018-04-04 18:43:49 -07:00
uio
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usb Merge branch 'next-general' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2018-04-07 11:11:41 -07:00
uwb
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vfio VFIO updates for v4.17-rc1 2018-04-06 19:44:27 -07:00
vhost fw_cfg, vhost: features fixes 2018-04-06 19:21:41 -07:00
video TTY/Serial driver patches for 4.17-rc1 2018-04-04 18:43:49 -07:00
virt
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virtio headers: untangle kmemleak.h from mm.h 2018-04-05 21:36:27 -07:00
visorbus
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vlynq
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vme
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w1
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watchdog This is the bulk of GPIO changes for the v4.17 kernel cycle: 2018-04-05 09:51:41 -07:00
xen x86/dma: Remove dma_alloc_coherent_mask() 2018-03-20 10:01:56 +01:00
zorro zorro: Set up z->dev.dma_mask for the DMA API 2018-03-19 10:26:46 +01:00
Kconfig hwtracing: Add HW tracing support menu 2018-03-29 13:38:10 +03:00
Makefile
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