I'm getting the following when I mount my root aufs filesystem: [ 20.360553] BUG: looking up invalid subclass: 9 [ 20.361395] turning off the locking correctness validator. [ 20.362249] CPU: 0 PID: 251 Comm: mkdir Not tainted 4.1.14+ #1 [ 20.363098] Hardware name: Dell Inc. Latitude E6430/ , BIOS A12 05/20/2013 [ 20.363959] ffff880036d2ca68 ffff8804077dfb18 ffffffff81791661 ffffffff8108a487 [ 20.364842] ffff8800372cc210 ffff8804077dfb98 ffffffff8107c2f8 ffff880407940010 [ 20.365736] ffff880036d2c930 0000000000000000 ffffffff81157fe8 0000000100000000 [ 20.366644] Call Trace: [ 20.367546] [<ffffffff81791661>] dump_stack+0x45/0x57 [ 20.368457] [<ffffffff8108a487>] ? console_unlock+0x356/0x385 [ 20.369359] [<ffffffff8107c2f8>] __lock_acquire+0x12c/0x1280 [ 20.370253] [<ffffffff81157fe8>] ? d_splice_alias+0x2c4/0x2da [ 20.371137] [<ffffffff8107dba6>] lock_acquire+0xce/0x10b [ 20.372012] [<ffffffff813a633e>] ? au_lkup_dentry+0x347/0x536 [ 20.372880] [<ffffffff81797b37>] mutex_lock_nested+0x3b/0x2d5 [ 20.373739] [<ffffffff813a633e>] ? au_lkup_dentry+0x347/0x536 [ 20.374594] [<ffffffff8114af60>] ? lookup_one_len+0xe2/0xf6 [ 20.375438] [<ffffffff813a633e>] au_lkup_dentry+0x347/0x536 [ 20.376273] [<ffffffff813ad6ec>] aufs_lookup+0xb4/0x279 [ 20.377092] [<ffffffff811496a2>] lookup_real+0x27/0x42 [ 20.377897] [<ffffffff8114a4e6>] __lookup_hash+0x2e/0x35 [ 20.378695] [<ffffffff8114a501>] lookup_hash+0x14/0x16 [ 20.379497] [<ffffffff8114e459>] filename_create+0x8a/0x143 [ 20.380292] [<ffffffff8114f01e>] ? getname_flags+0x6b/0x1c0 [ 20.381071] [<ffffffff8114f40f>] user_path_create+0x3a/0x51 [ 20.381839] [<ffffffff8114fd69>] SyS_mkdirat+0x32/0xad [ 20.382589] [<ffffffff8140b305>] ? lockdep_sys_exit_thunk+0x12/0x14 [ 20.383343] [<ffffffff8114fdf8>] SyS_mkdir+0x14/0x16 [ 20.384095] [<ffffffff8179a717>] system_call_fastpath+0x12/0x6f
I'm running vanilla kernel v4.1.14 (commit cb37126) merged onto aufs4.1 (commit ee5cc85). System details attached. I'm also getting frequent system hangs inside aufs code. I haven't saved a stack trace from those yet.
aufs_lockdep.tar.xz
Description: application/xz
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