From: Chengguang Xu <cgxu519@xxxxxxxxxxxx> commit e705f4b8aa27a59f8933e8f384e9752f052c469c upstream. Check err when partial == NULL is meaningless because partial == NULL means getting branch successfully without error. CC: stable@xxxxxxxxxxxxxxx Link: https://lore.kernel.org/r/20191105045100.7104-1-cgxu519@xxxxxxxxxxxx Signed-off-by: Chengguang Xu <cgxu519@xxxxxxxxxxxx> Signed-off-by: Jan Kara <jack@xxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- fs/ext2/inode.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) --- a/fs/ext2/inode.c +++ b/fs/ext2/inode.c @@ -697,10 +697,13 @@ static int ext2_get_blocks(struct inode if (!partial) { count++; mutex_unlock(&ei->truncate_mutex); - if (err) - goto cleanup; goto got_it; } + + if (err) { + mutex_unlock(&ei->truncate_mutex); + goto cleanup; + } } /*
