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[20/42] ext4: add missing unlock in ext4_check_descriptors() on error path

Message ID 1223525160-9887-21-git-send-email-tytso@mit.edu
State Accepted, archived
Headers show

Commit Message

Theodore Ts'o Oct. 9, 2008, 4:05 a.m. UTC 
From: Li Zefan <lizf@cn.fujitsu.com>

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 <lizf@cn.fujitsu.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
---
 fs/ext4/super.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
diff mbox

Patch

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 64e1c21..8175318 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)