BUG: unable to handle kernel paging request at ffffea0007104bf0
PGD 21f7ef067 P4D 21f7ef067 PUD 10 
Oops: 0000 [#1] SMP PTI
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 4535 Comm: syz-executor0 Not tainted 4.17.0+ #9
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kmsan_get_shadow_address+0xf6/0x1f0 mm/kmsan/kmsan.c:1374
RSP: 0018:ffff88012d61fd18 EFLAGS: 00010086
RAX: 0000000007104ba0 RBX: 00000000000004a0 RCX: ffffea0000000000
RDX: ffffea0007104ba0 RSI: ffff88012d61fdbe RDI: 0000000000000000
RBP: ffff88012d61fd30 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88012d61fdbe
R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000001
FS:  0000000001c22940(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffea0007104bf0 CR3: 000000012cc84000 CR4: 00000000001406e0
DR0: 0000000020000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 kmsan_internal_memset_shadow mm/kmsan/kmsan.c:175 [inline]
 kmsan_internal_unpoison_shadow+0x5c/0xe0 mm/kmsan/kmsan.c:212
 __msan_unpoison_alloca+0x66/0xb0 mm/kmsan/kmsan_instr.c:603
 do_page_fault+0x2a/0x250 arch/x86/mm/fault.c:1468
 page_fault+0x1e/0x30 arch/x86/entry/entry_64.S:1163
RIP: 0010:msan_get_shadow_origin_ptr+0x161/0x230 mm/kmsan/kmsan_instr.c:260
RSP: 0018:ffff88012d61fea8 EFLAGS: 00010206
RAX: 000000000809af60 RBX: ffffffff8b58a000 RCX: 0000000000156f29
RDX: 0000000000000540 RSI: 0000000000000008 RDI: ffffea0000000000
RBP: ffff88012d61fed8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000160000000000
R13: 000000000809af60 R14: ffffffff8b589000 R15: ffff880156f29d40
 __msan_metadata_ptr_for_load_8+0x10/0x20 mm/kmsan/kmsan_instr.c:321
 do_syscall_64+0x53/0x230 arch/x86/entry/common.c:276
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x458537
RSP: 002b:0000000000a3d9e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 000000000000017c RCX: 0000000000458537
RDX: 000000000000000c RSI: 0000000000000002 RDI: 0000000000a3f790
RBP: 0000000000a3f790 R08: 0000000000000001 R09: 0000000001c22940
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000004f3
R13: 0000000000000000 R14: 00000000000004f3 R15: 0000000000047528
Code: 48 8b 14 25 10 60 c3 8a eb 0a 48 ba 00 00 00 80 ff 77 00 00 48 01 c2 48 c1 ea 0c 48 8d 04 52 48 c1 e0 05 48 89 c2 48 01 ca 74 4c <80> 7c 01 50 00 75 74 48 8b 44 01 40 48 85 c0 0f 84 85 00 00 00 
RIP: kmsan_get_shadow_address+0xf6/0x1f0 mm/kmsan/kmsan.c:1374 RSP: ffff88012d61fd18
CR2: ffffea0007104bf0
---[ end trace 25b2781e3e0e41ab ]---