device ip6tnl0 entered promiscuous mode
WARNING: CPU: 0 PID: 19083 at ./include/net/sock.h:1510 sock_owned_by_me include/net/sock.h:1510 [inline]
WARNING: CPU: 0 PID: 19083 at ./include/net/sock.h:1510 sock_owned_by_user include/net/sock.h:1516 [inline]
WARNING: CPU: 0 PID: 19083 at ./include/net/sock.h:1510 strp_data_ready+0x2b7/0x390 net/strparser/strparser.c:404
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 19083 Comm: syz-executor6 Not tainted 4.15.0-rc4-mm1+ #49
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x194/0x257 lib/dump_stack.c:53
 panic+0x1e4/0x41c kernel/panic.c:183
 __warn+0x1dc/0x200 kernel/panic.c:547
 report_bug+0x211/0x2d0 lib/bug.c:184
 fixup_bug.part.11+0x37/0x80 arch/x86/kernel/traps.c:177
 fixup_bug arch/x86/kernel/traps.c:246 [inline]
 do_error_trap+0x2d7/0x3e0 arch/x86/kernel/traps.c:295
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:314
 invalid_op+0x22/0x40 arch/x86/entry/entry_64.S:1079
RIP: 0010:sock_owned_by_me include/net/sock.h:1510 [inline]
RIP: 0010:sock_owned_by_user include/net/sock.h:1516 [inline]
RIP: 0010:strp_data_ready+0x2b7/0x390 net/strparser/strparser.c:404
RSP: 0018:ffff8801d04e7860 EFLAGS: 00010212
RAX: 0000000000010000 RBX: ffff8801cfd288c8 RCX: ffffffff84bbe257
RDX: 00000000000001fe RSI: ffffc90004641000 RDI: ffffffff866e5920
RBP: ffff8801d04e7880 R08: 1ffff1003a09ce51 R09: 000000000000265e
R10: ffff8801d04e7748 R11: ffffed003a09ce3c R12: ffff8801d0ea11c0
R13: ffff8801cfd288d0 R14: ffff8801ca0f9bc0 R15: 0000000000000096
 psock_data_ready+0x56/0x70 net/kcm/kcmsock.c:353
 unix_stream_sendmsg+0x708/0xbe0 net/unix/af_unix.c:1911
 sock_sendmsg_nosec net/socket.c:628 [inline]
 sock_sendmsg+0xca/0x110 net/socket.c:638
 ___sys_sendmsg+0x320/0x8b0 net/socket.c:2018
 __sys_sendmmsg+0x1ee/0x620 net/socket.c:2108
 SYSC_sendmmsg net/socket.c:2139 [inline]
 SyS_sendmmsg+0x35/0x60 net/socket.c:2134
 entry_SYSCALL_64_fastpath+0x1f/0x96
RIP: 0033:0x452ac9
RSP: 002b:00007f0a17b9cc58 EFLAGS: 00000212 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 000000000071bea0 RCX: 0000000000452ac9
RDX: 0000000000000004 RSI: 00000000204e7f10 RDI: 0000000000000013
RBP: 0000000000000580 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000004004084 R11: 0000000000000212 R12: 00000000006f64a0
R13: 00000000ffffffff R14: 00007f0a17b9d6d4 R15: 0000000000000000
Dumping ftrace buffer:
   (ftrace buffer empty)
Kernel Offset: disabled
Rebooting in 86400 seconds..