Patch "scsi: qla2xxx: Defer processing of GS IOCB calls" has been added to the 4.14-stable tree

[<gregkh@linuxfoundation.org>]

This is a note to let you know that I've just added the patch titled

    scsi: qla2xxx: Defer processing of GS IOCB calls

to the 4.14-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     scsi-qla2xxx-defer-processing-of-gs-iocb-calls.patch
and it can be found in the queue-4.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 5d3300a9b8b122b4743aed5a178bf12c87e2b8c9 Mon Sep 17 00:00:00 2001
From: Giridhar Malavali <giridhar.malavali@cavium.com>
Date: Mon, 4 Dec 2017 14:45:13 -0800
Subject: scsi: qla2xxx: Defer processing of GS IOCB calls

From: Giridhar Malavali <giridhar.malavali@cavium.com>

commit 5d3300a9b8b122b4743aed5a178bf12c87e2b8c9 upstream.

This patch defers processing of GS IOCB calls from interrupt context to
avoid hardware spinlock recursion.

Following stack trace is seen

? mod_timer+0x193/0x330
? ql_dbg+0xa7/0xf0 [qla2xxx]
_raw_spin_lock_irqsave+0x31/0x40
qla2x00_start_sp+0x3b/0x250 [qla2xxx]
qla24xx_async_gnl+0x1d3/0x240 [qla2xxx]
qla24xx_fcport_handle_login+0x285/0x290 [qla2xxx]
? vprintk_func+0x20/0x50

Fixes: 726b85487067d ("qla2xxx: Add framework for async fabric discovery")
Cc: <stable@vger.kernel.org> # 4.10+
Signed-off-by: Giridhar Malavali <giridhar.malavali@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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/scsi/qla2xxx/qla_init.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -973,7 +973,7 @@ int qla24xx_fcport_handle_login(struct s
 			ql_dbg(ql_dbg_disc, vha, 0x20bd,
 			    "%s %d %8phC post gnl\n",
 			    __func__, __LINE__, fcport->port_name);
-			qla24xx_async_gnl(vha, fcport);
+			qla24xx_post_gnl_work(vha, fcport);
 		} else {
 			ql_dbg(ql_dbg_disc, vha, 0x20bf,
 			    "%s %d %8phC post login\n",
@@ -1142,7 +1142,7 @@ void qla24xx_handle_relogin_event(scsi_q
 		ql_dbg(ql_dbg_disc, vha, 0x20e9, "%s %d %8phC post gidpn\n",
 		    __func__, __LINE__, fcport->port_name);
 
-		qla24xx_async_gidpn(vha, fcport);
+		qla24xx_post_gidpn_work(vha, fcport);
 		return;
 	}
 


Patches currently in stable-queue which might be from giridhar.malavali@cavium.com are

queue-4.14/scsi-qla2xxx-defer-processing-of-gs-iocb-calls.patch
queue-4.14/scsi-qla2xxx-remove-aborting-els-iocb-call-issued-as-part-of-timeout.patch
queue-4.14/scsi-qla2xxx-fix-system-crash-in-qlt_plogi_ack_unref.patch