From: Theodore Ts'o tytso@mit.edu
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@kernel.org Reported-by: syzbot+d4b971e744b1f5439336@syzkaller.appspotmail.com Signed-off-by: Theodore Ts'o tytso@mit.edu Link: https://lore.kernel.org/r/20230524034951.779531-3-tytso@mit.edu Signed-off-by: Theodore Ts'o tytso@mit.edu 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 @@ -1490,6 +1490,7 @@ 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,