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| author | Hannes Reinecke <hare@suse.de> | 2021-05-26 18:23:15 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-06-18 11:00:05 +0300 |
| commit | 1c80ca596cab61ee03f20b591eea8c51a2c85b4d (patch) | |
| tree | 027b2bd435516f2a917e8ccbe808015d3fc671ec | |
| parent | b8fdea0695fd7ac382a35fe958a9e7c8f1f71685 (diff) | |
| download | linux-1c80ca596cab61ee03f20b591eea8c51a2c85b4d.tar.xz | |
nvme-loop: reset queue count to 1 in nvme_loop_destroy_io_queues()
[ Upstream commit a6c144f3d2e230f2b3ac5ed8c51e0f0391556197 ]
The queue count is increased in nvme_loop_init_io_queues(), so we
need to reset it to 1 at the end of nvme_loop_destroy_io_queues().
Otherwise the function is not re-entrant safe, and crash will happen
during concurrent reset and remove calls.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/nvme/target/loop.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/nvme/target/loop.c b/drivers/nvme/target/loop.c index b869b686e962..1d3185c82596 100644 --- a/drivers/nvme/target/loop.c +++ b/drivers/nvme/target/loop.c @@ -287,6 +287,7 @@ static void nvme_loop_destroy_io_queues(struct nvme_loop_ctrl *ctrl) clear_bit(NVME_LOOP_Q_LIVE, &ctrl->queues[i].flags); nvmet_sq_destroy(&ctrl->queues[i].nvme_sq); } + ctrl->ctrl.queue_count = 1; } static int nvme_loop_init_io_queues(struct nvme_loop_ctrl *ctrl) |