------------[ cut here ]------------
WARNING: CPU: 0 PID: 3574 at mm/kmsan/kmsan.c:1303 kmsan_get_shadow_address+0xa3/0x1f0 mm/kmsan/kmsan.c:1303
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 3574 Comm: syzkaller330977 Not tainted 4.16.0+ #81
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x185/0x1d0 lib/dump_stack.c:53
 panic+0x39d/0x940 kernel/panic.c:183
 __warn+0x40f/0x580 kernel/panic.c:547
 report_bug+0x72a/0x880 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 do_error_trap+0x1aa/0x600 arch/x86/kernel/traps.c:297
 do_invalid_op+0x46/0x50 arch/x86/kernel/traps.c:316
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:986
RIP: 0010:kmsan_get_shadow_address+0xa3/0x1f0 mm/kmsan/kmsan.c:1303
RSP: 0018:ffff8801d415fcc8 EFLAGS: 00010086
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffffff882da4a4
RBP: ffff8801d415fce0 R08: 000000073588ae8e R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000246
R13: 0000000020000140 R14: 0000000000000001 R15: 0000000000004760
 kmsan_internal_check_memory+0x7d/0x1d0 mm/kmsan/kmsan.c:1148
 kmsan_copy_to_user+0x69/0x160 mm/kmsan/kmsan.c:1199
 copy_to_user include/linux/uaccess.h:184 [inline]
 read_ldt arch/x86/kernel/ldt.c:323 [inline]
 SYSC_modify_ldt+0x2bb/0x600 arch/x86/kernel/ldt.c:452
 SyS_modify_ldt+0x50/0x70 arch/x86/kernel/ldt.c:445
 do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x3d/0xa2
RIP: 0033:0x43fcc9
RSP: 002b:00007ffdff1df318 EFLAGS: 00000217 ORIG_RAX: 000000000000009a
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcc9
RDX: 00000001000001a6 RSI: 0000000020000140 RDI: 0000000000000000
RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8
R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015f0
R13: 0000000000401680 R14: 0000000000000000 R15: 0000000000000000
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..