------------[ cut here ]------------ kernel BUG at mm/kmsan/kmsan_instr.c:85! invalid opcode: 0000 [#1] SMP CPU: 1 PID: 31321 Comm: cryptomgr_test Not tainted 4.20.0-rc7+ #9 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__msan_instrument_asm_store+0xfe/0x100 mm/kmsan/kmsan_instr.c:82 Code: 89 65 c8 ff 75 c8 9d 65 48 8b 04 25 28 00 00 00 48 3b 45 d8 75 0d 48 83 c4 18 5b 41 5c 41 5e 41 5f 5d c3 e8 84 11 59 ff 0f 0b <0f> 0b 55 48 89 e5 41 57 41 56 41 54 53 48 89 d3 49 89 f6 49 89 ff RSP: 0018:ffff88807c0bf710 EFLAGS: 00010096 RAX: ffff8881de20c320 RBX: ffff8881dbaf0000 RCX: 0000000000000003 RDX: 0000000000000002 RSI: 0000000000000000 RDI: ffff8881de13c320 RBP: ffff88807c0bf748 R08: ffff8881de13c328 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000082 R13: ffff8881de13c320 R14: 0000000000000008 R15: ffff8881de13c320 FS: 0000000000000000(0000) GS:ffff88821fd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffcbce4ef38 CR3: 000000015cd74000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: wake_q_add+0x49/0x1a0 kernel/sched/core.c:411 __cpu_stop_queue_work kernel/stop_machine.c:73 [inline] cpu_stop_queue_work kernel/stop_machine.c:88 [inline] stop_one_cpu_nowait+0x570/0x730 kernel/stop_machine.c:360 load_balance+0x960f/0x9ad0 kernel/sched/fair.c:8863 idle_balance kernel/sched/fair.c:9656 [inline] pick_next_task_fair+0xaf1/0x3240 kernel/sched/fair.c:6757 pick_next_task+0x1ba/0x420 kernel/sched/core.c:3322 __schedule+0x1f7/0x830 kernel/sched/core.c:3452 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 21fd24c839432ee6 ]--- RIP: 0010:__msan_instrument_asm_store+0xfe/0x100 mm/kmsan/kmsan_instr.c:82 Code: 89 65 c8 ff 75 c8 9d 65 48 8b 04 25 28 00 00 00 48 3b 45 d8 75 0d 48 83 c4 18 5b 41 5c 41 5e 41 5f 5d c3 e8 84 11 59 ff 0f 0b <0f> 0b 55 48 89 e5 41 57 41 56 41 54 53 48 89 d3 49 89 f6 49 89 ff RSP: 0018:ffff88807c0bf710 EFLAGS: 00010096 RAX: ffff8881de20c320 RBX: ffff8881dbaf0000 RCX: 0000000000000003 RDX: 0000000000000002 RSI: 0000000000000000 RDI: ffff8881de13c320 RBP: ffff88807c0bf748 R08: ffff8881de13c328 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000082 R13: ffff8881de13c320 R14: 0000000000000008 R15: ffff8881de13c320 FS: 0000000000000000(0000) GS:ffff88821fd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffcbce4ef38 CR3: 000000015cd74000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400