scsi: qla2xxx: Fix a race condition between aborting and completing a SCSI command

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Instead of allocating a struct srb dynamically from inside .queuecommand(),
set qla2xxx_driver_template.cmd_size such that struct scsi_cmnd and struct
srb are contiguous. Do not call QLA_QPAIR_MARK_BUSY() /
QLA_QPAIR_MARK_NOT_BUSY() for SRBs associated with SCSI commands. That is
safe because scsi_remove_host() is called before queue pairs are deleted
and scsi_remove_host() waits for all outstanding SCSI commands to finish.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

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Bart Van Assche 2019-08-08 20:02:06 -07:00 • committed by Martin K. Petersen

parent bdb61b9b94

commit 85cffefa09

2 changed files with 8 additions and 38 deletions

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1

drivers/scsi/qla2xxx/qla_def.h

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45

drivers/scsi/qla2xxx/qla_os.c

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