From c3b6a1d397420a0fdd97af2f06abfb78adc370df Mon Sep 17 00:00:00 2001 From: Quinn Tran Date: Thu, 12 Sep 2019 11:09:06 -0700 Subject: [PATCH] scsi: qla2xxx: Fix unbound sleep in fcport delete path. There are instances, though rare, where a LOGO request cannot be sent out and the thread in free session done can wait indefinitely. Fix this by putting an upper bound to sleep. Link: https://lore.kernel.org/r/20190912180918.6436-3-hmadhani@marvell.com Signed-off-by: Quinn Tran Signed-off-by: Himanshu Madhani Signed-off-by: Martin K. Petersen --- drivers/scsi/qla2xxx/qla_target.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/scsi/qla2xxx/qla_target.c b/drivers/scsi/qla2xxx/qla_target.c index 0ffda6171614..b58ecd2d7fb6 100644 --- a/drivers/scsi/qla2xxx/qla_target.c +++ b/drivers/scsi/qla2xxx/qla_target.c @@ -1020,6 +1020,7 @@ void qlt_free_session_done(struct work_struct *work) if (logout_started) { bool traced = false; + u16 cnt = 0; while (!READ_ONCE(sess->logout_completed)) { if (!traced) { @@ -1029,6 +1030,9 @@ void qlt_free_session_done(struct work_struct *work) traced = true; } msleep(100); + cnt++; + if (cnt > 200) + break; } ql_dbg(ql_dbg_disc, vha, 0xf087,