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%3Ba=su...

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