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| author | Keith Busch <keith.busch@intel.com> | 2017-02-11 02:15:51 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-04-08 10:30:36 +0300 |
| commit | a5e39a7f298546ee714b714f858e5255d5cafae8 (patch) | |
| tree | d5659d79fe50d862d3824a504811d502f21b7216 /drivers/nvme/host | |
| parent | eb8c62a3848e8b1df75c66933fa6cb6e347e6273 (diff) | |
| download | linux-a5e39a7f298546ee714b714f858e5255d5cafae8.tar.xz | |
nvme/core: Fix race kicking freed request_queue
commit f33447b90e96076483525b21cc4e0a8977cdd07c upstream.
If a namespace has already been marked dead, we don't want to kick the
request_queue again since we may have just freed it from another thread.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/nvme/host')
| -rw-r--r-- | drivers/nvme/host/core.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index da10b484bd25..bde769b11e3b 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -2057,9 +2057,9 @@ void nvme_kill_queues(struct nvme_ctrl *ctrl) * Revalidating a dead namespace sets capacity to 0. This will * end buffered writers dirtying pages that can't be synced. */ - if (ns->disk && !test_and_set_bit(NVME_NS_DEAD, &ns->flags)) - revalidate_disk(ns->disk); - + if (!ns->disk || test_and_set_bit(NVME_NS_DEAD, &ns->flags)) + continue; + revalidate_disk(ns->disk); blk_set_queue_dying(ns->queue); blk_mq_abort_requeue_list(ns->queue); blk_mq_start_stopped_hw_queues(ns->queue, true); |