This is a note to let you know that I've just added the patch titled
[PATCH stable 5.8 03/22] bnxt_en: Invoke cancel_delayed_work_sync() for PFs also.
to the 5.8-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:
bnxt_en-invoke-cancel_delayed_work_sync-for-pfs-also.patch
and it can be found in the queue-5.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Sat Oct 31 09:06:02 AM CET 2020
From: Vasundhara Volam <vasundhara-v.volam@xxxxxxxxxxxx>
Date: Mon, 26 Oct 2020 00:18:18 -0400
Subject: [PATCH stable 5.8 03/22] bnxt_en: Invoke cancel_delayed_work_sync() for PFs also.
From: Vasundhara Volam <vasundhara-v.volam@xxxxxxxxxxxx>
[ Upstream commit 631ce27a3006fc0b732bfd589c6df505f62eadd9 ]
As part of the commit b148bb238c02
("bnxt_en: Fix possible crash in bnxt_fw_reset_task()."),
cancel_delayed_work_sync() is called only for VFs to fix a possible
crash by cancelling any pending delayed work items. It was assumed
by mistake that the flush_workqueue() call on the PF would flush
delayed work items as well.
As flush_workqueue() does not cancel the delayed workqueue, extend
the fix for PFs. This fix will avoid the system crash, if there are
any pending delayed work items in fw_reset_task() during driver's
.remove() call.
Unify the workqueue cleanup logic for both PF and VF by calling
cancel_work_sync() and cancel_delayed_work_sync() directly in
bnxt_remove_one().
Fixes: b148bb238c02 ("bnxt_en: Fix possible crash in bnxt_fw_reset_task().")
Reviewed-by: Pavan Chebbi <pavan.chebbi@xxxxxxxxxxxx>
Reviewed-by: Andy Gospodarek <gospo@xxxxxxxxxxxx>
Signed-off-by: Vasundhara Volam <vasundhara-v.volam@xxxxxxxxxxxx>
Signed-off-by: Michael Chan <michael.chan@xxxxxxxxxxxx>
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/ethernet/broadcom/bnxt/bnxt.c | 13 ++-----------
1 file changed, 2 insertions(+), 11 deletions(-)
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -1158,16 +1158,6 @@ static void bnxt_queue_sp_work(struct bn
schedule_work(&bp->sp_task);
}
-static void bnxt_cancel_sp_work(struct bnxt *bp)
-{
- if (BNXT_PF(bp)) {
- flush_workqueue(bnxt_pf_wq);
- } else {
- cancel_work_sync(&bp->sp_task);
- cancel_delayed_work_sync(&bp->fw_reset_task);
- }
-}
-
static void bnxt_sched_reset(struct bnxt *bp, struct bnxt_rx_ring_info *rxr)
{
if (!rxr->bnapi->in_reset) {
@@ -11514,7 +11504,8 @@ static void bnxt_remove_one(struct pci_d
unregister_netdev(dev);
clear_bit(BNXT_STATE_IN_FW_RESET, &bp->state);
/* Flush any pending tasks */
- bnxt_cancel_sp_work(bp);
+ cancel_work_sync(&bp->sp_task);
+ cancel_delayed_work_sync(&bp->fw_reset_task);
bp->sp_event = 0;
bnxt_dl_fw_reporters_destroy(bp, true);
Patches currently in stable-queue which might be from vasundhara-v.volam@xxxxxxxxxxxx are
queue-5.8/bnxt_en-check-abort-error-state-in-bnxt_open_nic.patch
queue-5.8/bnxt_en-fix-regression-in-workqueue-cleanup-logic-in-bnxt_remove_one.patch
queue-5.8/bnxt_en-re-write-pci-bars-after-pci-fatal-error.patch
queue-5.8/bnxt_en-invoke-cancel_delayed_work_sync-for-pfs-also.patch
queue-5.8/bnxt_en-send-hwrm_func_reset-fw-command-unconditionally.patch
