ext4: add missing unlock in ext4_check_descriptors() on error path From: Li Zefan If there group descriptors are corrupted we need unlock the block group lock before returning from the function; else we will oops when freeing a spinlock which is still being held. Signed-off-by: Li Zefan Signed-off-by: "Theodore Ts'o" --- fs/ext4/super.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-) diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 566344b..24e7df6 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1623,8 +1623,10 @@ static int ext4_check_descriptors(struct super_block *sb) "Checksum for group %lu failed (%u!=%u)\n", i, le16_to_cpu(ext4_group_desc_csum(sbi, i, gdp)), le16_to_cpu(gdp->bg_checksum)); - if (!(sb->s_flags & MS_RDONLY)) + if (!(sb->s_flags & MS_RDONLY)) { + spin_unlock(sb_bgl_lock(sbi, i)); return 0; + } } spin_unlock(sb_bgl_lock(sbi, i)); if (!flexbg_flag)