Not allocated shadow for addr ffff880199701067 (page ffffea000998a060)
Attempted to access 0 bytes
------------[ cut here ]------------
kernel BUG at mm/kmsan/kmsan.c:1386!
invalid opcode: 0000 [#1] SMP PTI
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 14220 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+0x1ce/0x1f0 mm/kmsan/kmsan.c:1385
RSP: 0018:ffff88019b6df9f8 EFLAGS: 00010282
RAX: 000000000000001b RBX: 0000000000000660 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 000000000000115c RDI: 000000000000115d
RBP: ffff88019b6dfa10 R08: 0000000001080020 R09: 0000000000000002
R10: 0000000000000000 R11: ffffffff86575950 R12: 0000000000000000
R13: ffff8801c7ba08d8 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f94d2736700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f94d2714db8 CR3: 0000000165384000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 kmsan_copy_to_user+0x91/0x160 mm/kmsan/kmsan.c:1268
 copy_to_user include/linux/uaccess.h:184 [inline]
 inet_gifconf+0x345/0x500 net/ipv4/devinet.c:1211
 dev_ifconf+0x2b8/0x4f0 net/core/dev_ioctl.c:78
 sock_do_ioctl+0x3a0/0x6c0 net/socket.c:971
 sock_ioctl+0x748/0xd10 net/socket.c:1081
 vfs_ioctl fs/ioctl.c:46 [inline]
 do_vfs_ioctl+0xcbd/0x24b0 fs/ioctl.c:686
 ksys_ioctl fs/ioctl.c:701 [inline]
 __do_sys_ioctl fs/ioctl.c:708 [inline]
 __se_sys_ioctl fs/ioctl.c:706 [inline]
 __x64_sys_ioctl+0x280/0x320 fs/ioctl.c:706
 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x455b29
RSP: 002b:00007f94d2735c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f94d27366d4 RCX: 0000000000455b29
RDX: 0000000020000300 RSI: 0000004000008912 RDI: 0000000000000015
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004bc5aa R14: 00000000004ca4f8 R15: 0000000000000000
Code: 75 29 48 c7 c7 1d 39 97 8a 31 c0 e8 2d 4c 80 ff 80 3c 25 f8 93 53 8b 00 75 11 48 c7 c7 4d 39 97 8a 31 c0 4c 89 fe e8 12 4c 80 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:1385 RSP: ffff88019b6df9f8
---[ end trace 41aeb4d4d517e3f5 ]---