[PATCH 6.6 062/254] ext4: fix iloc.bh leak in ext4_xattr_inode_update_ref

Greg Kroah-Hartman
2026-01-28T15:29:51Z

From: Yang Erkun <yangerkun@huawei.com>

commit d250bdf531d9cd4096fedbb9f172bb2ca660c868 upstream.

The error branch for ext4_xattr_inode_update_ref forget to release the
refcount for iloc.bh. Find this when review code.

Fixes: 57295e835408 ("ext4: guard against EA inode refcount underflow in xattr update")
Signed-off-by: Yang Erkun <yangerkun@huawei.com>
Reviewed-by: Baokun Li <libaokun1@huawei.com>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Link: https://patch.msgid.link/20251213055706.3417529-1-yangerkun@huawei.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Cc: stable@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
fs/ext4/xattr.c | 1 +
1 file changed, 1 insertion(+)

--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -1037,6 +1037,7 @@ static int ext4_xattr_inode_update_ref(h
ext4_error_inode(ea_inode, __func__, __LINE__, 0,
"EA inode %lu ref wraparound: ref_count=%lld ref_change=%d",
ea_inode->i_ino, ref_count, ref_change);
+ brelse(iloc.bh);
ret = -EFSCORRUPTED;
goto out;
}