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scsi: qla2xxx: Fix memory leak when sending I/O fails 

commit 2f856d4e8c upstream.

On heavy loads, a memory leak of the srb_t structure is observed.  This
would make the qla2xxx_srbs cache gobble up memory.

Fixes: 219d27d714 ("scsi: qla2xxx: Fix race conditions in the code for aborting SCSI commands")
Cc: stable@vger.kernel.org # 5.2
Link: https://lore.kernel.org/r/20191105150657.8092-7-hmadhani@marvell.com
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Arun Easi <aeasi@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
5.4-rM2-2.2.x-imx-squashed
Arun Easi 2019-11-05 07:06:55 -08:00 committed by Greg Kroah-Hartman
parent 31c1f45520
commit 402f719831
1 changed files with 4 additions and 0 deletions
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4
drivers/scsi/qla2xxx/qla_os.c
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@ -909,6 +909,8 @@ qla2xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
qc24_host_busy_free_sp:
sp->free(sp);
CMD_SP(cmd) = NULL;
qla2x00_rel_sp(sp);
qc24_target_busy:
return SCSI_MLQUEUE_TARGET_BUSY;
@ -992,6 +994,8 @@ qla2xxx_mqueuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd,
qc24_host_busy_free_sp:
sp->free(sp);
CMD_SP(cmd) = NULL;
qla2xxx_rel_qpair_sp(sp->qpair, sp);
qc24_target_busy:
return SCSI_MLQUEUE_TARGET_BUSY;