diff options
| author | Quinn Tran <quinn.tran@cavium.com> | 2017-12-04 14:45:09 -0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2017-12-07 21:07:06 -0500 |
| commit | b0dcce746b32ac573343ad39cb3dc485030de95e (patch) | |
| tree | c7009f32a810bdec19267eab212afea367d829e6 /drivers/scsi/qla2xxx | |
| parent | 23c645595dab7b414f23639d0a428a07515807df (diff) | |
scsi: qla2xxx: Fix abort command deadlock due to spinlock
Original code acquires hardware_lock to add Abort IOCB onto driver
request queue for processing. However, abort_command() will also acquire
hardware lock to look up sp pointer before issuing abort IOCB command
resulting into a deadlock. This patch safely removes the possible
deadlock scenario by removing extra spinlock.
Fixes: 6eb54715b54bb ("qla2xxx: Added interface to send explicit LOGO.")
Cc: <stable@vger.kernel.org> # 4.10+
Signed-off-by: Quinn Tran <quinn.tran@cavium.com>
Signed-off-by: Himanshu Madhani <himanshu.madhani@cavium.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/qla2xxx')
| -rw-r--r-- | drivers/scsi/qla2xxx/qla_iocb.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c index d810a447cb4a..106f4ac4f733 100644 --- a/drivers/scsi/qla2xxx/qla_iocb.c +++ b/drivers/scsi/qla2xxx/qla_iocb.c @@ -2394,7 +2394,6 @@ qla2x00_els_dcmd_iocb_timeout(void *data) struct scsi_qla_host *vha = sp->vha; struct qla_hw_data *ha = vha->hw; struct srb_iocb *lio = &sp->u.iocb_cmd; - unsigned long flags = 0; ql_dbg(ql_dbg_io, vha, 0x3069, "%s Timeout, hdl=%x, portid=%02x%02x%02x\n", @@ -2402,7 +2401,6 @@ qla2x00_els_dcmd_iocb_timeout(void *data) fcport->d_id.b.al_pa); /* Abort the exchange */ - spin_lock_irqsave(&ha->hardware_lock, flags); if (ha->isp_ops->abort_command(sp)) { ql_dbg(ql_dbg_io, vha, 0x3070, "mbx abort_command failed.\n"); @@ -2410,7 +2408,6 @@ qla2x00_els_dcmd_iocb_timeout(void *data) ql_dbg(ql_dbg_io, vha, 0x3071, "mbx abort_command success.\n"); } - spin_unlock_irqrestore(&ha->hardware_lock, flags); complete(&lio->u.els_logo.comp); } |