IPVS: ftp: loaded support on port[0] = 21
IPVS: ftp: loaded support on port[0] = 21
Not allocated shadow for addr ffff8801b8600000 (page ffffea000a524000)
Attempted to access 4096 bytes
------------[ cut here ]------------
kernel BUG at mm/kmsan/kmsan.c:1326!
invalid opcode: 0000 [#1] SMP PTI
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 4547 Comm: syz-executor3 Not tainted 4.17.0-rc3+ #88
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kmsan_get_shadow_address+0x1ce/0x1f0 mm/kmsan/kmsan.c:1325
RSP: 0018:ffff8801ad39f890 EFLAGS: 00010082
RAX: 000000000000001e RBX: 00000000000006e0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000000
RBP: ffff8801ad39f8a8 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801b8600000
R13: 000000000000c000 R14: 0000000000000001 R15: 0000000000001000
FS:  00007f03fa48b700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020ec3000 CR3: 00000001abc48000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 kmsan_internal_memset_shadow mm/kmsan/kmsan.c:171 [inline]
 kmsan_internal_unpoison_shadow+0x5c/0xe0 mm/kmsan/kmsan.c:208
 kmsan_unpoison_shadow+0x66/0xb0 mm/kmsan/kmsan.c:222
 get_user_pages_fast+0x4ae/0x780 mm/gup.c:1828
 iov_iter_get_pages+0x465/0x1810 lib/iov_iter.c:1074
 af_alg_make_sg+0xdf/0x6d0 crypto/af_alg.c:404
 hash_sendmsg+0x305/0x1110 crypto/algif_hash.c:99
 sock_sendmsg_nosec net/socket.c:629 [inline]
 sock_sendmsg net/socket.c:639 [inline]
 __sys_sendto+0x6c0/0x7e0 net/socket.c:1789
 __do_sys_sendto net/socket.c:1801 [inline]
 __se_sys_sendto net/socket.c:1797 [inline]
 __x64_sys_sendto+0x1a1/0x210 net/socket.c:1797
 do_syscall_64+0x154/0x220 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x455979
RSP: 002b:00007f03fa48ac68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f03fa48b6d4 RCX: 0000000000455979
RDX: ffffffffffffff05 RSI: 00000000208ac000 RDI: 0000000000000004
RBP: 000000000072bea0 R08: 0000000020ec3000 R09: 0000000000000080
R10: 0000000000008000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000544 R14: 00000000006fbf00 R15: 0000000000000000
Code: 75 29 48 c7 c7 84 fe 9f 8a 31 c0 e8 4d 2a 83 ff 80 3c 25 f8 73 53 8b 00 75 11 48 c7 c7 b4 fe 9f 8a 31 c0 4c 89 fe e8 32 2a 83 ff <0f> 0b eb fe 48 3d ff ff ff 1f 0f 87 a2 fe ff ff 48 8b 1c 25 10 
RIP: kmsan_get_shadow_address+0x1ce/0x1f0 mm/kmsan/kmsan.c:1325 RSP: ffff8801ad39f890
---[ end trace 458c3b53b923382d ]---