------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(depth <= 0)
WARNING: CPU: 1 PID: 11275 at kernel/locking/lockdep.c:4052 __lock_release kernel/locking/lockdep.c:4052 [inline]
WARNING: CPU: 1 PID: 11275 at kernel/locking/lockdep.c:4052 lock_release+0x667/0xa00 kernel/locking/lockdep.c:4321
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 11275 Comm: syz-executor.2 Not tainted 5.1.0-next-20190510 #5
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 panic+0x2cb/0x75a kernel/panic.c:218
 __warn.cold+0x20/0x47 kernel/panic.c:575
 report_bug+0x263/0x2b0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:272
 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:291
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:972
RIP: 0010:__lock_release kernel/locking/lockdep.c:4052 [inline]
RIP: 0010:lock_release+0x667/0xa00 kernel/locking/lockdep.c:4321
Code: 0f 85 a0 03 00 00 8b 35 c7 01 29 08 85 f6 75 23 48 c7 c6 e0 57 8b 87 48 c7 c7 80 27 8b 87 4c 89 85 70 ff ff ff e8 57 7c eb ff <0f> 0b 4c 8b 85 70 ff ff ff 4c 89 ea 4c 89 e6 4c 89 c7 e8 52 63 ff
RSP: 0018:ffff88805f1efb58 EFLAGS: 00010082
RAX: 0000000000000000 RBX: 1ffff1100be3df71 RCX: 0000000000000000
RDX: 0000000000009104 RSI: ffffffff815b20a6 RDI: ffffed100be3df5d
RBP: ffff88805f1efc10 R08: ffff8880537fa500 R09: fffffbfff1173071
R10: fffffbfff1173070 R11: ffffffff88b98383 R12: ffffffff8a660eb8
R13: ffffffff8142f01c R14: ffffffff8a65bd40 R15: ffff88805f1efbe8
 percpu_up_read.constprop.0+0xcb/0x110 include/linux/percpu-rwsem.h:92
 cgroup_threadgroup_change_end include/linux/cgroup-defs.h:750 [inline]
 copy_process.part.0+0x516c/0x67e0 kernel/fork.c:2254
 copy_process kernel/fork.c:1804 [inline]
 _do_fork+0x25d/0xfe0 kernel/fork.c:2372
 __do_sys_clone kernel/fork.c:2479 [inline]
 __se_sys_clone kernel/fork.c:2473 [inline]
 __x64_sys_clone+0xbf/0x150 kernel/fork.c:2473
 do_syscall_64+0x103/0x670 arch/x86/entry/common.c:298
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x458da9
Code: ad b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f75a60d3c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000458da9
RDX: 0000000020000040 RSI: 0000000000000000 RDI: 0000000000201f00
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f75a60d46d4
R13: 00000000004bf173 R14: 00000000004d0398 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..