This is a note to let you know that I've just added the patch titled
nvme-fc: fix racing controller reset and create association
to the 5.11-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:
nvme-fc-fix-racing-controller-reset-and-create-assoc.patch
and it can be found in the queue-5.11 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit ea3a19de46e7c6126e569d5c6e2fbcd8c1a88d1a
Author: James Smart <jsmart2021@xxxxxxxxx>
Date: Mon Mar 8 16:51:26 2021 -0800
nvme-fc: fix racing controller reset and create association
[ Upstream commit f20ef34d71abc1fc56b322aaa251f90f94320140 ]
Recent patch to prevent calling __nvme_fc_abort_outstanding_ios in
interrupt context results in a possible race condition. A controller
reset results in errored io completions, which schedules error
work. The change of error work to a work element allows it to fire
after the ctrl state transition to NVME_CTRL_CONNECTING, causing
any outstanding io (used to initialize the controller) to fail and
cause problems for connect_work.
Add a state check to only schedule error work if not in the RESETTING
state.
Fixes: 19fce0470f05 ("nvme-fc: avoid calling _nvme_fc_abort_outstanding_ios from interrupt context")
Signed-off-by: Nigel Kirkland <nkirkland2304@xxxxxxxxx>
Signed-off-by: James Smart <jsmart2021@xxxxxxxxx>
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c
index 5f36cfa8136c..7ec6869b3e5b 100644
--- a/drivers/nvme/host/fc.c
+++ b/drivers/nvme/host/fc.c
@@ -2055,7 +2055,7 @@ nvme_fc_fcpio_done(struct nvmefc_fcp_req *req)
nvme_fc_complete_rq(rq);
check_error:
- if (terminate_assoc)
+ if (terminate_assoc && ctrl->ctrl.state != NVME_CTRL_RESETTING)
queue_work(nvme_reset_wq, &ctrl->ioerr_work);
}
