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| author | Nikolay Borisov <kernel@kyup.com> | 2015-12-17 18:03:35 +0200 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2016-02-01 11:40:08 -0500 |
| commit | 9e612a000cf889cfa624d984ccef770fdce43cf6 (patch) | |
| tree | e63e9432ed7e19469f6bbfe24c525aa9e50418bd /kernel | |
| parent | bf0a6a9a3d53615aee7a3e04c12f88fdd3fc1d4c (diff) | |
dm thin: fix race condition when destroying thin pool workqueue
[ Upstream commit 18d03e8c25f173f4107a40d0b8c24defb6ed69f3 ]
When a thin pool is being destroyed delayed work items are
cancelled using cancel_delayed_work(), which doesn't guarantee that on
return the delayed item isn't running. This can cause the work item to
requeue itself on an already destroyed workqueue. Fix this by using
cancel_delayed_work_sync() which guarantees that on return the work item
is not running anymore.
Fixes: 905e51b39a555 ("dm thin: commit outstanding data every second")
Fixes: 85ad643b7e7e5 ("dm thin: add timeout to stop out-of-data-space mode holding IO forever")
Signed-off-by: Nikolay Borisov <kernel@kyup.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Diffstat (limited to 'kernel')
0 files changed, 0 insertions, 0 deletions