------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(class_idx > MAX_LOCKDEP_KEYS)
WARNING: CPU: 0 PID: 12629 at kernel/locking/lockdep.c:3765 __lock_acquire+0x17b5/0x5490 kernel/locking/lockdep.c:3765
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 12629 Comm: syz-executor.5 Not tainted 5.2.0-rc2+ #36
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 panic+0x2cb/0x744 kernel/panic.c:219
 __warn.cold+0x20/0x4d kernel/panic.c:576
 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:986
RIP: 0010:__lock_acquire+0x17b5/0x5490 kernel/locking/lockdep.c:3765
Code: d2 0f 85 c7 2c 00 00 44 8b 3d 67 a4 29 08 45 85 ff 0f 85 57 f3 ff ff 48 c7 c6 20 c4 6b 87 48 c7 c7 00 9b 6b 87 e8 09 d5 eb ff <0f> 0b e9 40 f3 ff ff 0f 0b e9 83 f1 ff ff 8b 0d 47 88 0e 09 85 c9
RSP: 0018:ffff8880ae809a10 EFLAGS: 00010086
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000100 RSI: ffffffff815ac7e6 RDI: ffffed1015d01334
RBP: ffff8880ae809bc0 R08: ffff888098d00200 R09: fffffbfff1173159
R10: fffffbfff1173158 R11: ffffffff88b98ac3 R12: 00000000f6f41909
R13: 0000000000000001 R14: 00000000000c3909 R15: 0000000000000000
 lock_acquire+0x16f/0x3f0 kernel/locking/lockdep.c:4303
 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline]
 _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:151
 spin_lock include/linux/spinlock.h:338 [inline]
 __queue_work+0x285/0x1200 kernel/workqueue.c:1449
 delayed_work_timer_fn+0x5d/0x90 kernel/workqueue.c:1616
 call_timer_fn+0x193/0x720 kernel/time/timer.c:1322
 expire_timers kernel/time/timer.c:1362 [inline]
 __run_timers kernel/time/timer.c:1685 [inline]
 __run_timers kernel/time/timer.c:1653 [inline]
 run_timer_softirq+0x462/0x1740 kernel/time/timer.c:1698
 __do_softirq+0x25c/0x94c kernel/softirq.c:293
 invoke_softirq kernel/softirq.c:374 [inline]
 irq_exit+0x180/0x1d0 kernel/softirq.c:414
 exiting_irq arch/x86/include/asm/apic.h:536 [inline]
 smp_apic_timer_interrupt+0x13b/0x550 arch/x86/kernel/apic/apic.c:1068
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:806
 </IRQ>
RIP: 0010:shrink_zones mm/vmscan.c:2892 [inline]
RIP: 0010:do_try_to_free_pages+0x3a7/0x11e0 mm/vmscan.c:2953
Code: ff 4c 01 f8 4d 85 e4 48 89 85 58 ff ff ff 0f 85 07 01 00 00 e9 57 02 00 00 e8 b5 19 de ff 4c 89 e8 48 c1 e8 03 42 80 3c 38 00 <0f> 85 df 0a 00 00 4d 8b 64 24 50 4c 3b a5 68 ff ff ff 74 17 e8 90
RSP: 0018:ffff888062f97c28 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 1ffff11025fff80a RBX: ffff88812fffda20 RCX: ffffc90012ac9000
RDX: 0000000000000a6d RSI: ffffffff81928abb RDI: 0000000000000004
RBP: ffff888062f97d58 R08: ffff888098d00200 R09: 0000000000000001
R10: ffffed1015d06bdf R11: ffff8880ae835efb R12: ffff88812fffc000
R13: ffff88812fffc050 R14: ffff888062f97dc8 R15: dffffc0000000000
 try_to_free_mem_cgroup_pages+0x2dd/0x9f0 mm/vmscan.c:3249
 reclaim_high.constprop.0+0xb3/0x100 mm/memcontrol.c:2249
 mem_cgroup_handle_over_high+0x8e/0x130 mm/memcontrol.c:2274
 tracehook_notify_resume include/linux/tracehook.h:190 [inline]
 exit_to_usermode_loop+0x1ee/0x2c0 arch/x86/entry/common.c:168
 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:279 [inline]
 do_syscall_64+0x58e/0x680 arch/x86/entry/common.c:304
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459279
Code: fd b7 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 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f8ead2cdc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: 0000000000000003 RBX: 0000000000000003 RCX: 0000000000459279
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8ead2ce6d4
R13: 00000000004c7b25 R14: 00000000004ddd58 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..