Bart Van Assche 625fe857e4 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 03197b61c5 ("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>		2017-03-19 13:15:50 -04:00
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Kconfig	scsi_dh: force modular build if SCSI is a module	2016-02-23 21:27:02 -05:00
Makefile	scsi_dh: integrate into the core SCSI code	2015-08-28 13:14:56 -07:00
scsi_dh_alua.c	scsi: scsi_dh_alua: Check scsi_device_get() return value	2017-03-19 13:15:50 -04:00
scsi_dh_emc.c	scsi: remove scsi_execute_req_flags	2017-02-23 16:57:36 -05:00
scsi_dh_hp_sw.c	scsi: remove scsi_execute_req_flags	2017-02-23 16:57:36 -05:00
scsi_dh_rdac.c	scsi: remove scsi_execute_req_flags	2017-02-23 16:57:36 -05:00