4.9-stable review patch. If anyone has any objections, please let me know.
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From: Zhilong Liu zlliu@suse.com
[ Upstream commit b670883bb9e55ba63a278d83e034faefc01ce2cf ]
md.c: it needs to release the mddev lock before the array_size_store() returns.
Fixes: ab5a98b132fd ("md-cluster: change array_sectors and update size are not supported")
Signed-off-by: Zhilong Liu zlliu@suse.com Reviewed-by: Guoqing Jiang gqjiang@suse.com Signed-off-by: Shaohua Li shli@fb.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/md/md.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -4826,8 +4826,10 @@ array_size_store(struct mddev *mddev, co return err;
/* cluster raid doesn't support change array_sectors */ - if (mddev_is_clustered(mddev)) + if (mddev_is_clustered(mddev)) { + mddev_unlock(mddev); return -EINVAL; + }
if (strncmp(buf, "default", 7) == 0) { if (mddev->pers)