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nvme-fc: fix racing controller reset and create association

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[ 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@gmail.com>
Signed-off-by: James Smart <jsmart2021@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
James Smart 2021-03-08 16:51:26 -08:00 committed by Greg Kroah-Hartman
parent d1d918492e
commit 6cf11f3a09
1 changed files with 1 additions and 1 deletions
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2
drivers/nvme/host/fc.c
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@ -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);
}