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
1107c7b2 ("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: 1107c7b2 ("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.comSigned-off-by: John Garry <john.g.garry@oracle.com>
Link: https://lore.kernel.org/r/20230416175654.159163-1-john.g.garry@oracle.comReviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>