ext4: make sure to reset inode lockdep class when quota enabling fails
stable inclusion from linux-4.19.226 commit ef41f72716c469a670b9d556b65e5ed83a3a5fd7 -------------------------------- commit 4013d47a upstream. When we succeed in enabling some quota type but fail to enable another one with quota feature, we correctly disable all enabled quota types. However we forget to reset i_data_sem lockdep class. When the inode gets freed and reused, it will inherit this lockdep class (i_data_sem is initialized only when a slab is created) and thus eventually lockdep barfs about possible deadlocks. Reported-and-tested-by: syzbot+3b6f9218b1301ddda3e2@syzkaller.appspotmail.com Signed-off-by: NJan Kara <jack@suse.cz> Cc: stable@kernel.org Link: https://lore.kernel.org/r/20211007155336.12493-3-jack@suse.czSigned-off-by: NTheodore Ts'o <tytso@mit.edu> Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NYongqiang Liu <liuyongqiang13@huawei.com> Signed-off-by: NLaibin Qiu <qiulaibin@huawei.com>
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