bridge0: port 2(bridge_slave_1) entered disabled state
device bridge_slave_0 left promiscuous mode
bridge0: port 1(bridge_slave_0) entered disabled state
current->kmsan.in_runtime: -1, last_caller:           (null)
------------[ cut here ]------------
kernel BUG at mm/kmsan/kmsan_instr.c:85!
invalid opcode: 0000 [#1] SMP
CPU: 1 PID: 25997 Comm: kworker/0:6 Not tainted 4.20.0-rc7+ #12
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__msan_instrument_asm_store+0x12d/0x130 mm/kmsan/kmsan_instr.c:85
Code: 29 0d 59 ff 0f 0b e8 72 f5 7b ff 85 c0 75 1b 8b b3 88 09 00 00 48 8b 93 80 09 00 00 48 c7 c7 4e 72 5f 8b 31 c0 e8 83 22 7c ff <0f> 0b 90 55 48 89 e5 41 57 41 56 41 54 53 48 89 d3 49 89 f6 49 89
RSP: 0018:ffff88821fd0fb10 EFLAGS: 00010046
RAX: 000000000000003c RBX: ffff888157618000 RCX: 1d5eed10e18f6100
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88821fd36abc
RBP: ffff88821fd0fb48 R08: 0000000000000000 R09: ffff88821fd38f10
R10: 0000000000000000 R11: ffffffff861d8220 R12: 0000000000000082
R13: ffff88821fd39ec0 R14: 0000000000000004 R15: ffff8881de7ec1c8
FS:  0000000000000000(0000) GS:ffff88821fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600400 CR3: 00000001aa29e000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 arch_atomic_try_cmpxchg arch/x86/include/asm/atomic.h:200 [inline]
 atomic_try_cmpxchg include/asm-generic/atomic-instrumented.h:73 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:87 [inline]
 do_raw_spin_lock include/linux/spinlock.h:180 [inline]
 __raw_spin_lock include/linux/spinlock_api_smp.h:143 [inline]
 _raw_spin_lock+0x65/0x110 kernel/locking/spinlock.c:144
 spin_lock include/linux/spinlock.h:329 [inline]
 drm_handle_vblank+0x134/0x730 drivers/gpu/drm/drm_vblank.c:1701
 drm_crtc_handle_vblank+0x8a/0xb0 drivers/gpu/drm/drm_vblank.c:1750
 _vblank_handle drivers/gpu/drm/vkms/vkms_crtc.c:20 [inline]
 vkms_vblank_simulate+0x98/0x4f0 drivers/gpu/drm/vkms/vkms_crtc.c:49
 __run_hrtimer kernel/time/hrtimer.c:1398 [inline]
 __hrtimer_run_queues+0xbfc/0x15c0 kernel/time/hrtimer.c:1460
 hrtimer_interrupt+0x458/0x1380 kernel/time/hrtimer.c:1518
 local_apic_timer_interrupt+0x7c/0x260 arch/x86/kernel/apic/apic.c:1034
 smp_apic_timer_interrupt+0x3e/0x70 arch/x86/kernel/apic/apic.c:1061
 apic_timer_interrupt+0x2e/0x40 arch/x86/entry/entry_64.S:814
 </IRQ>
RIP: 0010:_raw_spin_unlock_irqrestore+0x4b/0x70 kernel/locking/spinlock.c:185
Code: 00 8b b8 88 0c 00 00 48 8b 00 48 85 c0 75 28 48 89 df e8 98 6c 4a f7 c6 00 00 c6 03 00 4d 85 e4 75 1c 4c 89 7d d8 ff 75 d8 9d <48> 83 c4 08 5b 41 5c 41 5e 41 5f 5d c3 e8 83 76 4a f7 eb d1 44 89
RSP: 0018:ffff8881a8effe30 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
RAX: ffff88815779faf8 RBX: ffff88815778faf8 RCX: ffff88815779faf8
RDX: ffff8881577cfaf8 RSI: 0000160000000000 RDI: ccccccccccccd000
RBP: ffff8881a8effe58 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: ffffffff81494230 R12: 0000000000000000
R13: ffff88815778faf0 R14: 0000000000000000 R15: 0000000000000286
 spin_unlock_irqrestore include/linux/spinlock.h:384 [inline]
 complete+0x10e/0x170 kernel/sched/completion.c:37
 kthread+0x3c6/0x4e0 kernel/kthread.c:240
 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:355
Modules linked in:
---[ end trace 7b29733e5c2dc01b ]---
RIP: 0010:__msan_instrument_asm_store+0x12d/0x130 mm/kmsan/kmsan_instr.c:85
Code: 29 0d 59 ff 0f 0b e8 72 f5 7b ff 85 c0 75 1b 8b b3 88 09 00 00 48 8b 93 80 09 00 00 48 c7 c7 4e 72 5f 8b 31 c0 e8 83 22 7c ff <0f> 0b 90 55 48 89 e5 41 57 41 56 41 54 53 48 89 d3 49 89 f6 49 89
RSP: 0018:ffff88821fd0fb10 EFLAGS: 00010046
RAX: 000000000000003c RBX: ffff888157618000 RCX: 1d5eed10e18f6100
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88821fd36abc
RBP: ffff88821fd0fb48 R08: 0000000000000000 R09: ffff88821fd38f10
R10: 0000000000000000 R11: ffffffff861d8220 R12: 0000000000000082
R13: ffff88821fd39ec0 R14: 0000000000000004 R15: ffff8881de7ec1c8
FS:  0000000000000000(0000) GS:ffff88821fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600400 CR3: 00000001aa29e000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400