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authorNikolay Borisov <kernel@kyup.com>2015-12-17 18:03:35 +0200
committerSasha Levin <sasha.levin@oracle.com>2016-02-02 13:57:28 -0500
commit2d54f171578072967fac46f8226f8ebcb9e4d8a6 (patch)
tree2189ae554b69d91ec91ddfce87c7e64a89d8efe8 /kernel
parenta0493b5238daa6fc5dbd23a9b46e9cab041a5c11 (diff)
downloadlinux-linaro-stable-2d54f171578072967fac46f8226f8ebcb9e4d8a6.tar.gz
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')
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