[Open-FCoE] [PATCH] libfc: fixed a soft lockup issue in fc_exch_recv_abts

Vasu Dev vasu.dev at intel.com
Fri Jan 16 02:52:21 UTC 2009


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 at intel.com>
---

 drivers/scsi/libfc/fc_exch.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)


diff --git a/drivers/scsi/libfc/fc_exch.c b/drivers/scsi/libfc/fc_exch.c
index e874e77..dd269e5 100644
--- 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);




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