diff options
| author | John Garry <john.g.garry@oracle.com> | 2023-04-16 17:56:54 +0000 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2023-04-18 22:58:50 -0400 |
| commit | 0c028b6a115e7f18480ec3f98ba7bccf011646ea (patch) | |
| tree | ae6d7b241163ba1fbe166e795b8bd452fe030a8c /drivers/scsi | |
| parent | 3c85f087faeca3ca9ec9e7b085e1eff370e3f0db (diff) | |
scsi: scsi_debug: Abort commands from scsi_debug_device_reset()
Currently scsi_debug_device_reset() does not do much apart from setting the
SDEBUG_UA_POR ("Power on, reset, or bus device reset") flag, which is
eventually passed back to the SCSI midlayer later for a "unit attention"
command.
There is a report that blktest scsi/007 test fails due to commit
1107c7b24ee3 ("scsi: scsi_debug: Dynamically allocate sdebug_queued_cmd").
The problem there is that there are dangling scsi_debug queued commands
when we attempt to remove the driver.
scsi/007 test triggers SCSI EH and attempts to abort a timed-out command.
Function scsi_debug_device_reset() is called as part of the EH, but does
not deal with outstanding erroneous command. Prior to the named commit,
removing the driver caused all dangling queued commands to be stopped -
this should have not been necessary.
Fix by aborting outstanding commands on a scsi_device basis from
scsi_debug_device_reset().
Fixes: 1107c7b24ee3 ("scsi: scsi_debug: Dynamically allocate sdebug_queued_cmd")
Reported-by: kernel test robot <yujie.liu@intel.com>
Link: https://lore.kernel.org/oe-lkp/202304071111.e762fcbd-yujie.liu@intel.com
Signed-off-by: John Garry <john.g.garry@oracle.com>
Link: https://lore.kernel.org/r/20230416175654.159163-1-john.g.garry@oracle.com
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/scsi_debug.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index f4fa1035a191..8c58128ad32a 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -5291,6 +5291,26 @@ static int scsi_debug_abort(struct scsi_cmnd *SCpnt) return SUCCESS; } +static bool scsi_debug_stop_all_queued_iter(struct request *rq, void *data) +{ + struct scsi_device *sdp = data; + struct scsi_cmnd *scmd = blk_mq_rq_to_pdu(rq); + + if (scmd->device == sdp) + scsi_debug_abort_cmnd(scmd); + + return true; +} + +/* Deletes (stops) timers or work queues of all queued commands per sdev */ +static void scsi_debug_stop_all_queued(struct scsi_device *sdp) +{ + struct Scsi_Host *shost = sdp->host; + + blk_mq_tagset_busy_iter(&shost->tag_set, + scsi_debug_stop_all_queued_iter, sdp); +} + static int scsi_debug_device_reset(struct scsi_cmnd *SCpnt) { struct scsi_device *sdp = SCpnt->device; @@ -5300,6 +5320,8 @@ static int scsi_debug_device_reset(struct scsi_cmnd *SCpnt) if (SDEBUG_OPT_ALL_NOISE & sdebug_opts) sdev_printk(KERN_INFO, sdp, "%s\n", __func__); + + scsi_debug_stop_all_queued(sdp); if (devip) set_bit(SDEBUG_UA_POR, devip->uas_bm); |