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| author | Bart Van Assche <bart.vanassche@sandisk.com> | 2017-03-17 17:02:01 -0700 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-03-19 13:15:50 -0400 |
| commit | 625fe857e4fac6518716f3c0ff5e5deb8ec6d238 (patch) | |
| tree | 02ac94b193a3b39c009c5ba6e0d635877057eabc /drivers/scsi/libsas | |
| parent | bf33f87dd04c371ea33feb821b60d63d754e3124 (diff) | |
| download | linux-625fe857e4fac6518716f3c0ff5e5deb8ec6d238.tar.bz2 | |
scsi: scsi_dh_alua: Check scsi_device_get() return value
Do not queue ALUA work nor call scsi_device_put() if the
scsi_device_get() call fails. This patch fixes the following crash:
general protection fault: 0000 [#1] SMP
RIP: 0010:scsi_device_put+0xb/0x30
Call Trace:
scsi_disk_put+0x2d/0x40
sd_release+0x3d/0xb0
__blkdev_put+0x29e/0x360
blkdev_put+0x49/0x170
dm_put_table_device+0x58/0xc0 [dm_mod]
dm_put_device+0x70/0xc0 [dm_mod]
free_priority_group+0x92/0xc0 [dm_multipath]
free_multipath+0x70/0xc0 [dm_multipath]
multipath_dtr+0x19/0x20 [dm_multipath]
dm_table_destroy+0x67/0x120 [dm_mod]
dev_suspend+0xde/0x240 [dm_mod]
ctl_ioctl+0x1f5/0x520 [dm_mod]
dm_ctl_ioctl+0xe/0x20 [dm_mod]
do_vfs_ioctl+0x8f/0x700
SyS_ioctl+0x3c/0x70
entry_SYSCALL_64_fastpath+0x18/0xad
Fixes: commit 03197b61c5ec ("scsi_dh_alua: Use workqueue for RTPG")
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Hannes Reinecke <hare@suse.de>
Cc: Tang Junhui <tang.junhui@zte.com.cn>
Cc: <stable@vger.kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/libsas')
0 files changed, 0 insertions, 0 deletions