[PATCH 20/42] ext4: add missing unlock in ext4_check_descriptors() on error path
From: Theodore Ts'o
Date: Thu Oct 09 2008 - 00:17:30 EST
From: Li Zefan <lizf@xxxxxxxxxxxxxx>
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@xxxxxxxxxxxxxx>
Signed-off-by: "Theodore Ts'o" <tytso@xxxxxxx>
---
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 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)
--
1.5.6.1.205.ge2c7.dirty
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