INIT: Entering runlevel: 2

[info] Using makefile-style concurrent boot in runlevel 2.
[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added 'ci-upstream-mmots-kasan-gce-4,10.128.15.195' (ECDSA) to the list of known hosts.
net.ipv6.conf.syz0.accept_dad = 0
net.ipv6.conf.syz0.router_solicitations = 0
executing program
syzkaller login: [   50.757928] syz0: caps=(0x00000400000058c1, 0x0000000000000000) len=4203 data_len=2810 gso_size=8465 gso_type=3 ip_summed=0
[   50.769422] ------------[ cut here ]------------
[   50.774458] WARNING: CPU: 0 PID: 2986 at net/core/dev.c:2585 skb_warn_bad_offload+0x2a9/0x380
[   50.783136] Kernel panic - not syncing: panic_on_warn set ...
[   50.783136] 
[   50.790478] CPU: 0 PID: 2986 Comm: syzkaller546001 Not tainted 4.13.0-mm1+ #7
[   50.797726] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   50.807071] Call Trace:
[   50.809652]  dump_stack+0x194/0x257
[   50.813266]  ? arch_local_irq_restore+0x53/0x53
[   50.817960]  panic+0x1e4/0x417
[   50.821170]  ? __warn+0x1d9/0x1d9
[   50.824630]  ? show_regs_print_info+0x65/0x65
[   50.829155]  ? skb_warn_bad_offload+0x2a9/0x380
[   50.833841]  __warn+0x1c4/0x1d9
[   50.837139]  ? skb_warn_bad_offload+0x2a9/0x380
[   50.841832]  report_bug+0x211/0x2d0
[   50.845485]  fixup_bug+0x40/0x90
[   50.848871]  do_trap+0x260/0x390
[   50.852263]  do_error_trap+0x120/0x390
[   50.856169]  ? do_trap+0x390/0x390
[   50.859724]  ? skb_warn_bad_offload+0x2a9/0x380
[   50.864400]  ? vprintk_emit+0x3ea/0x590
[   50.868397]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   50.873265]  do_invalid_op+0x1b/0x20
[   50.876998]  invalid_op+0x18/0x20
[   50.880467] RIP: 0010:skb_warn_bad_offload+0x2a9/0x380
[   50.885750] RSP: 0018:ffff8801ce73f0a0 EFLAGS: 00010282
[   50.891125] RAX: 000000000000006f RBX: ffff8801cd84cde0 RCX: 0000000000000000
[   50.898402] RDX: 000000000000006f RSI: 1ffff10039ce7dd4 RDI: ffffed0039ce7e08
[   50.905688] RBP: ffff8801ce73f0f8 R08: ffff8801ce73e790 R09: 0000000000000000
[   50.912975] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801ce7802c0
[   50.920253] R13: 0000000000000000 R14: ffff8801ce7802c0 R15: 0000000000002111
[   50.927585]  __skb_gso_segment+0x607/0x7f0
[   50.931845]  ? skb_mac_gso_segment+0x660/0x660
[   50.936465]  validate_xmit_skb+0x4ba/0xb20
[   50.941095]  ? netif_skb_features+0x8e0/0x8e0
[   50.945629]  validate_xmit_skb_list+0xb7/0x120
[   50.950243]  sch_direct_xmit+0x3b6/0x6d0
[   50.954350]  ? dev_deactivate_queue.constprop.27+0x260/0x260
[   50.960214]  __dev_queue_xmit+0x15fe/0x1e40
[   50.964603]  ? netdev_pick_tx+0x300/0x300
[   50.968806]  ? __might_fault+0xe0/0x1d0
[   50.972856]  ? check_same_owner+0x320/0x320
[   50.977224]  ? _copy_from_iter+0x367/0xf30
[   50.981530]  ? kasan_check_write+0x14/0x20
[   50.985812]  ? copyin+0x91/0xb0
[   50.989160]  ? skb_copy_datagram_from_iter+0x3a5/0x5a0
[   50.994497]  dev_queue_xmit+0x17/0x20
[   50.998334]  packet_sendmsg+0x3bbf/0x6030
[   51.002517]  ? do_raw_spin_trylock+0x190/0x190
[   51.007123]  ? find_held_lock+0x39/0x1d0
[   51.011239]  ? packet_cached_dev_get+0x2b0/0x2b0
[   51.016044]  ? check_noncircular+0x20/0x20
[   51.020318]  ? lock_release+0xd70/0xd70
[   51.024312]  ? check_same_owner+0x320/0x320
[   51.028652]  ? __check_object_size+0x25d/0x4f0
[   51.033262]  ? __might_sleep+0x95/0x190
[   51.037553]  ? find_held_lock+0x39/0x1d0
[   51.041659]  ? lock_downgrade+0x990/0x990
[   51.045851]  ? sock_has_perm+0x29c/0x400
[   51.049961]  ? selinux_tun_dev_create+0xc0/0xc0
[   51.054657]  ? copy_page_to_iter+0x583/0xd60
[   51.059088]  ? lock_release+0xd70/0xd70
[   51.063061]  ? security_socket_sendmsg+0x89/0xb0
[   51.067796]  ? packet_cached_dev_get+0x2b0/0x2b0
[   51.072534]  sock_sendmsg+0xca/0x110
[   51.076225]  ___sys_sendmsg+0x75b/0x8a0
[   51.080177]  ? copy_msghdr_from_user+0x590/0x590
[   51.084937]  ? handle_mm_fault+0x410/0x8d0
[   51.089161]  ? down_read_trylock+0xdb/0x170
[   51.093475]  ? __do_page_fault+0x2b8/0xb60
[   51.097709]  ? __fdget+0x18/0x20
[   51.101060]  __sys_sendmsg+0xe5/0x210
[   51.104833]  ? __sys_sendmsg+0xe5/0x210
[   51.108786]  ? SyS_shutdown+0x290/0x290
[   51.112735]  ? __do_page_fault+0xb60/0xb60
[   51.116948]  ? SyS_setsockopt+0x189/0x360
[   51.121069]  ? SyS_setsockopt+0x215/0x360
[   51.125206]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   51.130203]  SyS_sendmsg+0x2d/0x50
[   51.133731]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   51.138461] RIP: 0033:0x445489
[   51.141627] RSP: 002b:00000000007efe68 EFLAGS: 00000217 ORIG_RAX: 000000000000002e
[   51.149312] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000445489
[   51.156558] RDX: 0000000000004010 RSI: 00000000207fcfc8 RDI: 0000000000000004
[   51.163801] RBP: 0000000000000082 R08: 000000000000cdf3 R09: 000000000000cdf3
[   51.171044] R10: 0000000000000004 R11: 0000000000000217 R12: 0000000000402ae0
[   51.178288] R13: 0000000000402b70 R14: 0000000000000000 R15: 0000000000000000
[   51.185755] Dumping ftrace buffer:
[   51.189362]    (ftrace buffer empty)
[   51.193051] Kernel Offset: disabled
[   51.196661] Rebooting in 86400 seconds..