[SCSI] libfc: fixed a soft lockup issue in fc_exch_recv_abts

The fc_seq_start_next grabs ep->ex_lock but this lock was already held here,
so instead called fc_seq_start_next_locked to avoid soft lockup.

Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

diff --git a/drivers/scsi/libfc/fc_exch.c b/drivers/scsi/libfc/fc_exch.c
index e874e77b740c1f6d9769bdac032e05a9ffc28ef8..dd269e5f953e7240d5e24020065bfb4c2e3f418d 100644 (file)
--- a/drivers/scsi/libfc/fc_exch.c
+++ b/drivers/scsi/libfc/fc_exch.c
@@ -1096,7 +1096,7 @@ static void fc_exch_recv_abts(struct fc_exch *ep, struct fc_frame *rx_fp)
                ap->ba_high_seq_cnt = fh->fh_seq_cnt;
                ap->ba_low_seq_cnt = htons(sp->cnt);
        }
-       sp = fc_seq_start_next(sp);
+       sp = fc_seq_start_next_locked(sp);
        spin_unlock_bh(&ep->ex_lock);
        fc_seq_send_last(sp, fp, FC_RCTL_BA_ACC, FC_TYPE_BLS);
        fc_frame_free(rx_fp);