[PATCH 5.3 143/180] scsi: qla2xxx: Make qla2x00_abort_srb() again decrease the sp reference count

Greg Kroah-Hartman
2019-12-16T18:12:56Z

From: Bart Van Assche <bvanassche@acm.org>

[ Upstream commit d2d2b5a5741d317bed1fa38211f1f3b142d8cf7a ]

Since qla2x00_abort_srb() starts with increasing the reference count of
@sp, decrease that same reference count before returning.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Fixes: 219d27d7147e ("scsi: qla2xxx: Fix race conditions in the code for aborting SCSI commands") # v5.2.
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/scsi/qla2xxx/qla_os.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index ef75897b27132..82f6ae4dcfc0b 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -1751,6 +1751,8 @@ static void qla2x00_abort_srb(struct qla_qpair *qp, srb_t *sp, const int res,
spin_lock_irqsave(qp->qp_lock_ptr, *flags);
sp->comp = NULL;
}
+
+ atomic_dec(&sp->ref_count);
}

static void
--
2.20.1