WARNING: CPU: 0 PID: 3356 at arch/x86/kernel/traps.c:801 cond_local_irq_disable arch/x86/kernel/traps.c:86 [inline]
WARNING: CPU: 0 PID: 3356 at arch/x86/kernel/traps.c:801 do_debug+0x4d8/0x6e0 arch/x86/kernel/traps.c:815
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 3356 Comm: syzkaller834441 Not tainted 4.15.0-rc5+ #237
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <#DB>
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:53
 panic+0x1e4/0x41c kernel/panic.c:183
 __warn+0x1dc/0x200 kernel/panic.c:547
 report_bug+0x211/0x2d0 lib/bug.c:184
 fixup_bug.part.11+0x37/0x80 arch/x86/kernel/traps.c:178
 fixup_bug arch/x86/kernel/traps.c:247 [inline]
 do_error_trap+0x2d7/0x3e0 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:315
 invalid_op+0x22/0x40 arch/x86/entry/entry_64.S:1061
RIP: 0010:cond_local_irq_disable arch/x86/kernel/traps.c:86 [inline]
RIP: 0010:do_debug+0x4d8/0x6e0 arch/x86/kernel/traps.c:815
RSP: 0018:fffffe800000ee98 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: fffffe800000ef58 RCX: 0000000000000000
RDX: 1fffffd000001dfc RSI: 0000000000000001 RDI: ffffffff85ec81f8
RBP: fffffe800000ef48 R08: fffffe800000efe8 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 000000000000e003
R13: ffff8801c2340040 R14: 1fffffd000001dd8 R15: 0000000000004000
 debug+0x34/0x60 arch/x86/entry/entry_64.S:1214
RIP: 0010:__put_user_8+0x1f/0x25 arch/x86/lib/putuser.S:83
RSP: 0018:ffff8801c9f8ff28 EFLAGS: 00000293
RAX: 000000005a4195b6 RBX: 00007fffffffeff9 RCX: 0000000020000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000282
RBP: ffff8801c9f8ff48 R08: 0000000000000000 R09: 1ffff100393f1fc2
R10: ffff8801c9f8fdd8 R11: 0000000000000000 R12: 000000005a4195b6
R13: 0000000020000000 R14: 00007f2c937f99c0 R15: 0000000000000001
 </#DB>
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x44aef9
RSP: 002b:00007f2c937f8ce8 EFLAGS: 00000206 ORIG_RAX: 00000000000000c9
RAX: ffffffffffffffda RBX: 00000000006dcc24 RCX: 000000000044aef9
RDX: 000000000044aef9 RSI: 000000000044aef9 RDI: 0000000020000000
RBP: 00000000006dcc20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007ffe9191073f R14: 00007f2c937f99c0 R15: 0000000000000001
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..