From: Theodore Ts'o <tytso@xxxxxxx>
commit b928dfdcb27d8fa59917b794cfba53052a2f050f upstream.
If the ea_inode has been pushed out of the inode cache while there is
still a reference in the mb_cache, the lockdep subclass will not be
set on the inode, which can lead to some lockdep false positives.
Fixes: 33d201e0277b ("ext4: fix lockdep warning about recursive inode locking")
Cc: stable@xxxxxxxxxx
Reported-by: syzbot+d4b971e744b1f5439336@xxxxxxxxxxxxxxxxxxxxxxxxx
Signed-off-by: Theodore Ts'o <tytso@xxxxxxx>
Link: https://lore.kernel.org/r/20230524034951.779531-3-tytso@xxxxxxx
Signed-off-by: Theodore Ts'o <tytso@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/ext4/xattr.c | 1 +
1 file changed, 1 insertion(+)
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -1483,6 +1483,7 @@ ext4_xattr_inode_cache_find(struct inode
EXT4_IGET_EA_INODE);
if (IS_ERR(ea_inode))
goto next_entry;
+ ext4_xattr_inode_set_class(ea_inode);
if (i_size_read(ea_inode) == value_len &&
!ext4_xattr_inode_read(ea_inode, ea_data, value_len) &&
!ext4_xattr_inode_verify_hashes(ea_inode, NULL, ea_data,
