------------[ cut here ]------------
WARNING: CPU: 0 PID: 7289 at arch/x86/kernel/cpu/mce/core.c:1662 mce_timer_fn+0x273/0x2b0 arch/x86/kernel/cpu/mce/core.c:1662
Modules linked in:
CPU: 0 PID: 7289 Comm: syz.4.228 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:mce_timer_fn+0x273/0x2b0 arch/x86/kernel/cpu/mce/core.c:1662
Code: e9 7c ff ff ff e8 fd 04 52 00 e9 e1 fe ff ff e8 f3 04 52 00 48 c7 c7 40 a7 c6 8a e8 b7 f7 51 09 e9 2a ff ff ff e8 dd 04 52 00 <0f> 0b e9 00 fe ff ff e8 d1 04 52 00 48 c7 c7 e0 f7 d7 8d 4c 89 f6
RSP: 0018:ffffc90000007b68 EFLAGS: 00010246
RAX: ffffffff81358bd3 RBX: ffff8880b8d28188 RCX: ffff88802f080000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000008
RBP: 0000000000000000 R08: ffffffff8f6c5aef R09: 1ffffffff1ed8b5d
R10: dffffc0000000000 R11: fffffbfff1ed8b5e R12: 1ffff92000000f78
R13: dffffc0000000000 R14: ffffffff8caa9a30 R15: 0000000000000000
FS:  00007fb4fd0376c0(0000) GS:ffff8880b8c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30319ff8 CR3: 0000000063858000 CR4: 00000000003506f0
Call Trace:
 <IRQ>
 call_timer_fn+0x189/0x540 kernel/time/timer.c:1701
 expire_timers kernel/time/timer.c:1752 [inline]
 __run_timers+0x570/0x810 kernel/time/timer.c:2023
 run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2036
 handle_softirqs+0x27d/0x820 kernel/softirq.c:578
 __do_softirq kernel/softirq.c:612 [inline]
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
 sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:finish_task_switch+0x267/0x8f0 kernel/sched/core.c:5256
Code: 35 09 85 c0 0f 84 30 01 00 00 48 85 db 0f 85 4f 01 00 00 0f 1f 44 00 00 4c 89 e7 e8 e3 e9 3e 09 e8 2e 28 30 00 fb 4c 8b 65 b8 <49> 8d bc 24 00 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0
RSP: 0018:ffffc90004737200 EFLAGS: 00000286
RAX: 0c92c3f6cbdd9200 RBX: 0000000000000000 RCX: 0c92c3f6cbdd9200
RDX: dffffc0000000000 RSI: ffffffff8acacfe0 RDI: ffffffff8b1d5160
RBP: ffffc90004737250 R08: ffffffff91ff15af R09: 1ffffffff23fe2b5
R10: dffffc0000000000 R11: fffffbfff23fe2b6 R12: ffff88802f080000
R13: 1ffff110171879a1 R14: dffffc0000000000 R15: ffff8880b8c3cd08
 context_switch kernel/sched/core.c:5385 [inline]
 __schedule+0x15b6/0x4660 kernel/sched/core.c:6701
 preempt_schedule_common+0x82/0xc0 kernel/sched/core.c:6868
 preempt_schedule+0xc0/0xd0 kernel/sched/core.c:6892
 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
 _raw_spin_unlock_irqrestore+0x111/0x120 kernel/locking/spinlock.c:194
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 __wake_up_common_lock kernel/sched/wait.c:140 [inline]
 __wake_up_sync_key+0x12c/0x1a0 kernel/sched/wait.c:213
 __unix_dgram_recvmsg+0x4bb/0xd90 net/unix/af_unix.c:2449
 sock_recvmsg_nosec+0x82/0xd0 net/socket.c:1047
 ____sys_recvmsg+0x4d7/0x5d0 net/socket.c:2812
 ___sys_recvmsg+0x214/0x590 net/socket.c:2856
 do_recvmmsg+0x377/0x810 net/socket.c:2950
 __sys_recvmmsg net/socket.c:3029 [inline]
 __do_sys_recvmmsg net/socket.c:3052 [inline]
 __se_sys_recvmmsg net/socket.c:3045 [inline]
 __x64_sys_recvmmsg+0x199/0x250 net/socket.c:3045
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fb4fc19e559
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fb4fd037028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007fb4fc426090 RCX: 00007fb4fc19e559
RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000004
RBP: 00007fb4fc2358b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb4fc426128 R14: 00007fb4fc426090 R15: 00007ffeeba8b178
 </TASK>
----------------
Code disassembly (best guess):
   0:	35 09 85 c0 0f       	xor    $0xfc08509,%eax
   5:	84 30                	test   %dh,(%rax)
   7:	01 00                	add    %eax,(%rax)
   9:	00 48 85             	add    %cl,-0x7b(%rax)
   c:	db 0f                	fisttpl (%rdi)
   e:	85 4f 01             	test   %ecx,0x1(%rdi)
  11:	00 00                	add    %al,(%rax)
  13:	0f 1f 44 00 00       	nopl   0x0(%rax,%rax,1)
  18:	4c 89 e7             	mov    %r12,%rdi
  1b:	e8 e3 e9 3e 09       	call   0x93eea03
  20:	e8 2e 28 30 00       	call   0x302853
  25:	fb                   	sti
  26:	4c 8b 65 b8          	mov    -0x48(%rbp),%r12
* 2a:	49 8d bc 24 00 16 00 	lea    0x1600(%r12),%rdi <-- trapping instruction
  31:	00
  32:	48 89 f8             	mov    %rdi,%rax
  35:	48 c1 e8 03          	shr    $0x3,%rax
  39:	42 0f b6 04 30       	movzbl (%rax,%r14,1),%eax
  3e:	84 c0                	test   %al,%al