samsung_sm8750/android_kernel_samsung_sm8750
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

nvme-pci: acquire cq_poll_lock in nvme_poll_irqdisable

Browse Source 
[ Upstream commit 3d8932133dcecbd9bef1559533c1089601006f45 ]

We need to lock this queue for that condition because the timeout work
executes per-namespace and can poll the poll CQ.

Reported-by: Hannes Reinecke <hare@kernel.org>
Closes: https://lore.kernel.org/all/20240902130728.1999-1-hare@kernel.org/
Fixes: a0fa9647a5 ("NVMe: add blk polling support")
Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Daniel Wagner <wagi@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Keith Busch
2025-05-08 16:57:06 +02:00
committed by Greg Kroah-Hartman
parent 64638f3103
commit c70c021be0
1 changed files with 2 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/nvme/host/pci.c
View File

@@ -1107,7 +1107,9 @@ static void nvme_poll_irqdisable(struct nvme_queue *nvmeq)
WARN_ON_ONCE(test_bit(NVMEQ_POLLED, &nvmeq->flags));
disable_irq(pci_irq_vector(pdev, nvmeq->cq_vector));
spin_lock(&nvmeq->cq_poll_lock);
nvme_poll_cq(nvmeq, NULL);
spin_unlock(&nvmeq->cq_poll_lock);
enable_irq(pci_irq_vector(pdev, nvmeq->cq_vector));
}