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: 0 PID: 21698 Comm: kvm-pit/1802 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:ffff8880a215fd68 EFLAGS: 00010046
RAX: 000000000000003c RBX: ffff8880abb53c00 RCX: 37688cb37c43c100
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88821fc36abc
RBP: ffff8880a215fda0 R08: 0000000000000000 R09: ffff88821fc38f10
R10: 0000000000000000 R11: ffffffff861d8220 R12: 0000000000000086
R13: ffff8880abb54590 R14: 0000000000000001 R15: ffff8880a215fdb7
FS:  0000000000000000(0000) GS:ffff88821fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe60188d460 CR3: 00000000a296e000 CR4: 00000000001426f0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 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+0x58/0x110 kernel/locking/spinlock.c:144
 rq_lock+0x15/0x20 kernel/sched/sched.h:1124
 __schedule+0x99/0x830 kernel/sched/core.c:3416
 schedule+0x1ab/0x2b0 kernel/sched/core.c:3522
 kthread+0x3cb/0x4e0 kernel/kthread.c:241
 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:355
Modules linked in:
---[ end trace 92dc914ca6c46061 ]---
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:ffff8880a215fd68 EFLAGS: 00010046
RAX: 000000000000003c RBX: ffff8880abb53c00 RCX: 37688cb37c43c100
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88821fc36abc
RBP: ffff8880a215fda0 R08: 0000000000000000 R09: ffff88821fc38f10
R10: 0000000000000000 R11: ffffffff861d8220 R12: 0000000000000086
R13: ffff8880abb54590 R14: 0000000000000001 R15: ffff8880a215fdb7
FS:  0000000000000000(0000) GS:ffff88821fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe60188d460 CR3: 00000000a296e000 CR4: 00000000001426f0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400