From: Dominique Martinet dominique.martinet@atmark-techno.com
mainline inclusion from mainline-v6.9-rc7 commit 9af503d91298c3f2945e73703f0e00995be08c30 category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9QGIP CVE: CVE-2024-35936
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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The previous patch that replaced BUG_ON by error handling forgot to unlock the mutex in the error path.
Link: https://lore.kernel.org/all/Zh%2fHpAGFqa7YAFuM@duo.ucw.cz Reported-by: Pavel Machek pavel@denx.de Fixes: 7411055db5ce ("btrfs: handle chunk tree lookup error in btrfs_relocate_sys_chunks()") CC: stable@vger.kernel.org Reviewed-by: Pavel Machek pavel@denx.de Signed-off-by: Dominique Martinet dominique.martinet@atmark-techno.com Reviewed-by: David Sterba dsterba@suse.com Signed-off-by: David Sterba dsterba@suse.com Signed-off-by: Yifan Qiao qiaoyifan@huawei.com --- fs/btrfs/volumes.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 172cec8a12dd..abc58ea10b2b 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -2931,6 +2931,7 @@ static int btrfs_relocate_sys_chunks(struct btrfs_fs_info *fs_info) * alignment and size). */ ret = -EUCLEAN; + mutex_unlock(&fs_info->reclaim_bgs_lock); goto error; }