------------[ cut here ]------------
WARNING: CPU: 1 PID: 2543 at mm/kmsan/kmsan.c:1363 kmsan_get_shadow_address+0xa3/0x1f0 mm/kmsan/kmsan.c:1363
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 2543 Comm: syz-executor4 Not tainted 4.17.0+ #9
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x185/0x1d0 lib/dump_stack.c:113
 panic+0x3d0/0x990 kernel/panic.c:184
 __warn+0x40f/0x580 kernel/panic.c:536
 report_bug+0x72a/0x880 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:179 [inline]
 do_error_trap+0x1c1/0x620 arch/x86/kernel/traps.c:298
 do_invalid_op+0x46/0x50 arch/x86/kernel/traps.c:317
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:995
RIP: 0010:kmsan_get_shadow_address+0xa3/0x1f0 mm/kmsan/kmsan.c:1363
RSP: 0018:ffff88003166fce8 EFLAGS: 00010082
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffffc900041ad000 RSI: 0000000000000735 RDI: 0000000000000736
RBP: ffff88003166fd00 R08: 000000874c41abb1 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000246
R13: 0000000000008000 R14: 0000000000000001 R15: 0000000000008000
 kmsan_internal_check_memory+0x81/0x1f0 mm/kmsan/kmsan.c:1210
 kmsan_copy_to_user+0x7a/0x160 mm/kmsan/kmsan.c:1261
 copy_to_user include/linux/uaccess.h:184 [inline]
 read_ldt arch/x86/kernel/ldt.c:327 [inline]
 __do_sys_modify_ldt arch/x86/kernel/ldt.c:456 [inline]
 __se_sys_modify_ldt+0x347/0x610 arch/x86/kernel/ldt.c:449
 __x64_sys_modify_ldt+0xd3/0x110 arch/x86/kernel/ldt.c:449
 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x455a99
RSP: 002b:00007f73a8af1c68 EFLAGS: 00000246 ORIG_RAX: 000000000000009a
RAX: ffffffffffffffda RBX: 00007f73a8af26d4 RCX: 0000000000455a99
RDX: 755a856d1deebb76 RSI: 0000000020000000 RDI: 0000000000000000
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004bffee R14: 00000000004cf4b0 R15: 0000000000000000
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..