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scsi: core: scsi_logging: Fix a BUG 

The request_queue may be NULL in a request, for example when it comes from
scsi_ioctl_reset(). Check it before use.

Fixes: f3fa33acca ("block: remove the ->rq_disk field in struct request")
Link: https://lore.kernel.org/r/20220324134603.28463-1-thenzl@redhat.com
Reported-by: Changhui Zhong <czhong@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Tomas Henzl 2022-03-24 14:46:03 +01:00 committed by Martin K. Petersen
parent 8ee15ea779
commit f06aa52cb2
1 changed files with 1 additions and 1 deletions
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2
drivers/scsi/scsi_logging.c
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@ -30,7 +30,7 @@ static inline const char *scmd_name(const struct scsi_cmnd *scmd)
{ {
struct request *rq = scsi_cmd_to_rq((struct scsi_cmnd *)scmd); struct request *rq = scsi_cmd_to_rq((struct scsi_cmnd *)scmd);
if (!rq->q->disk) if (!rq->q || !rq->q->disk)
return NULL; return NULL;
return rq->q->disk->disk_name; return rq->q->disk->disk_name;
} }