Not allocated shadow for addr ffff8801af320000 (page ffffea000a1b2c00)
Attempted to access 510 bytes
------------[ cut here ]------------
kernel BUG at mm/kmsan/kmsan.c:1344!
invalid opcode: 0000 [#1] SMP PTI
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 4472 Comm: sshd Not tainted 4.17.0-rc5+ #101
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:1343
RSP: 0018:ffff8801d7dee700 EFLAGS: 00010082
RAX: 000000000000001d RBX: 00000000000006a0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000000
RBP: ffff8801d7dee718 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801af320000
R13: 00000000000001fe R14: 0000000000000001 R15: 00000000000001fe
FS:  00007f3355b257c0(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffff600400 CR3: 00000001af9ca000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 kmsan_internal_memset_shadow mm/kmsan/kmsan.c:172 [inline]
 kmsan_internal_unpoison_shadow+0x5c/0xe0 mm/kmsan/kmsan.c:209
 kmsan_unpoison_shadow+0x66/0xb0 mm/kmsan/kmsan.c:223
 virtqueue_get_buf_ctx+0x742/0xa20 drivers/virtio/virtio_ring.c:759
 virtqueue_get_buf+0x72/0x90 drivers/virtio/virtio_ring.c:766
 free_old_xmit_skbs drivers/net/virtio_net.c:1234 [inline]
 start_xmit+0x293/0x29a0 drivers/net/virtio_net.c:1399
 __netdev_start_xmit include/linux/netdevice.h:4087 [inline]
 netdev_start_xmit include/linux/netdevice.h:4096 [inline]
 xmit_one net/core/dev.c:3053 [inline]
 dev_hard_start_xmit+0x5f1/0xc70 net/core/dev.c:3069
 sch_direct_xmit+0x540/0x8f0 net/sched/sch_generic.c:327
 qdisc_restart net/sched/sch_generic.c:399 [inline]
 __qdisc_run+0x1785/0x3730 net/sched/sch_generic.c:410
 __dev_xmit_skb net/core/dev.c:3244 [inline]
 __dev_queue_xmit+0x1d50/0x3520 net/core/dev.c:3552
 dev_queue_xmit+0x4b/0x60 net/core/dev.c:3617
 neigh_hh_output include/net/neighbour.h:472 [inline]
 neigh_output include/net/neighbour.h:480 [inline]
 ip_finish_output2+0x12a1/0x1470 net/ipv4/ip_output.c:229
 ip_finish_output+0xcb2/0xff0 net/ipv4/ip_output.c:317
 NF_HOOK_COND include/linux/netfilter.h:277 [inline]
 ip_output+0x505/0x5d0 net/ipv4/ip_output.c:405
 dst_output include/net/dst.h:444 [inline]
 ip_local_out net/ipv4/ip_output.c:124 [inline]
 ip_queue_xmit+0x1a1e/0x1d10 net/ipv4/ip_output.c:504
 tcp_transmit_skb+0x3d81/0x53d0 net/ipv4/tcp_output.c:1176
 tcp_write_xmit+0x2d71/0xb290 net/ipv4/tcp_output.c:2373
 __tcp_push_pending_frames+0x124/0x3f0 net/ipv4/tcp_output.c:2546
 tcp_push+0x803/0x8f0 net/ipv4/tcp.c:735
 tcp_sendmsg_locked+0x4eb1/0x6610 net/ipv4/tcp.c:1410
 tcp_sendmsg+0xb2/0x100 net/ipv4/tcp.c:1447
 inet_sendmsg+0x48d/0x740 net/ipv4/af_inet.c:798
 sock_sendmsg_nosec net/socket.c:629 [inline]
 sock_sendmsg net/socket.c:639 [inline]
 sock_write_iter+0x3b9/0x470 net/socket.c:908
 call_write_iter include/linux/fs.h:1784 [inline]
 new_sync_write fs/read_write.c:474 [inline]
 __vfs_write+0x7fb/0x9f0 fs/read_write.c:487
 vfs_write+0x463/0x8d0 fs/read_write.c:549
 ksys_write fs/read_write.c:598 [inline]
 __do_sys_write fs/read_write.c:610 [inline]
 __se_sys_write fs/read_write.c:607 [inline]
 __x64_sys_write+0x1bf/0x3e0 fs/read_write.c:607
 do_syscall_64+0x154/0x220 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f3353ec0370
RSP: 002b:00007ffe398d5d88 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000048 RCX: 00007f3353ec0370
RDX: 0000000000000048 RSI: 0000561c72b48430 RDI: 0000000000000003
RBP: 0000561c72b48430 R08: 0000000000000001 R09: 6e69747563657865
R10: 6172676f72702067 R11: 0000000000000246 R12: 00007ffe398d5dec
R13: 0000561c70e8cfb4 R14: 0000000000000028 R15: 0000561c70e8eca0
Code: 75 29 48 c7 c7 e3 00 a0 8a 31 c0 e8 7d 16 83 ff 80 3c 25 f8 73 53 8b 00 75 11 48 c7 c7 13 01 a0 8a 31 c0 4c 89 fe e8 62 16 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:1343 RSP: ffff8801d7dee700
---[ end trace cfcceeca38832fca ]---