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-4,10.128.0.49' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   33.093761] ------------[ cut here ]------------
[   33.094526] WARNING: CPU: 1 PID: 2989 at ./include/net/sock.h:1507 strp_data_ready+0x2b7/0x390
[   33.095804] Kernel panic - not syncing: panic_on_warn set ...
[   33.095804] 
[   33.096806] CPU: 1 PID: 2989 Comm: syzkaller185908 Not tainted 4.14.0-rc5-mm1+ #20
[   33.097813] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   33.099033] Call Trace:
[   33.099394]  dump_stack+0x194/0x257
[   33.099887]  ? arch_local_irq_restore+0x53/0x53
[   33.100516]  ? vsnprintf+0x1ed/0x1900
[   33.101031]  panic+0x1e4/0x41c
[   33.101483]  ? refcount_error_report+0x214/0x214
[   33.102114]  ? show_regs_print_info+0x65/0x65
[   33.102721]  ? __warn+0x1a9/0x1e0
[   33.103192]  ? strp_data_ready+0x2b7/0x390
[   33.103759]  __warn+0x1c4/0x1e0
[   33.104205]  ? strp_data_ready+0x2b7/0x390
[   33.104774]  report_bug+0x211/0x2d0
[   33.105268]  fixup_bug+0x40/0x90
[   33.105723]  do_trap+0x260/0x390
[   33.106183]  do_error_trap+0x120/0x390
[   33.106725]  ? sk_filter_trim_cap+0x3f3/0x9b0
[   33.107340]  ? do_trap+0x390/0x390
[   33.107817]  ? strp_data_ready+0x2b7/0x390
[   33.108395]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   33.109043]  do_invalid_op+0x1b/0x20
[   33.109543]  invalid_op+0x18/0x20
[   33.110007] RIP: 0010:strp_data_ready+0x2b7/0x390
[   33.110650] RSP: 0018:ffff8801d322f7d8 EFLAGS: 00010293
[   33.111395] RAX: ffff8801d1e2a140 RBX: ffff8801cf5b0c48 RCX: ffffffff847b0437
[   33.112385] RDX: 0000000000000000 RSI: ffff8801d4761120 RDI: ffffffff85cc4e60
[   33.113365] RBP: ffff8801d322f7f8 R08: 0000000000000002 R09: 1ffffffff0cddfc6
[   33.114321] R10: ffff8801d322f6c0 R11: 1ffff1003a3c5683 R12: ffff8801d4761080
[   33.121558] R13: ffff8801cf5b0c50 R14: ffff8801d322f960 R15: ffff8801d4761080
[   33.128805]  ? strp_data_ready+0x2b7/0x390
[   33.133012]  ? strp_data_ready+0x2b7/0x390
[   33.137216]  psock_data_ready+0x56/0x70
[   33.141159]  unix_dgram_sendmsg+0xa72/0x1600
[   33.145547]  ? unix_shutdown+0x870/0x870
[   33.149583]  ? kasan_check_write+0x14/0x20
[   33.153801]  unix_seqpacket_sendmsg+0xf3/0x160
[   33.158349]  ? unix_dgram_sendmsg+0x1600/0x1600
[   33.162986]  sock_sendmsg+0xca/0x110
[   33.166668]  ___sys_sendmsg+0x31c/0x890
[   33.170616]  ? copy_msghdr_from_user+0x590/0x590
[   33.175344]  ? find_held_lock+0x35/0x1d0
[   33.179381]  ? handle_mm_fault+0x248/0x8d0
[   33.183582]  ? __fget_light+0x297/0x380
[   33.187524]  ? fget_raw+0x20/0x20
[   33.190953]  ? __do_page_fault+0x64c/0xd60
[   33.195153]  ? lock_downgrade+0x990/0x990
[   33.199278]  ? __fdget+0x18/0x20
[   33.202613]  __sys_sendmmsg+0x1e6/0x5f0
[   33.206554]  ? __sys_sendmmsg+0x1e6/0x5f0
[   33.210676]  ? SyS_sendmsg+0x50/0x50
[   33.214362]  ? mm_fault_error+0x2c0/0x2c0
[   33.218480]  ? do_vfs_ioctl+0x486/0x1520
[   33.222507]  ? _cond_resched+0x14/0x30
[   33.226376]  ? __do_page_fault+0xd60/0xd60
[   33.230583]  ? __fd_install+0x66b/0x6a0
[   33.234524]  ? sock_map_fd+0x53/0x70
[   33.238211]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   33.243197]  SyS_sendmmsg+0x35/0x60
[   33.246793]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   33.251511] RIP: 0033:0x43fe69
[   33.254666] RSP: 002b:00007fffa34a3338 EFLAGS: 00000217 ORIG_RAX: 0000000000000133
[   33.262337] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fe69
[   33.269577] RDX: 0000000000000001 RSI: 0000000020e83fc4 RDI: 0000000000000004
[   33.276812] RBP: 0000000000000082 R08: 00000000004017d0 R09: 00000000004017d0
[   33.284047] R10: 0000000000000000 R11: 0000000000000217 R12: 00000000004017d0
[   33.291284] R13: 0000000000401860 R14: 0000000000000000 R15: 0000000000000000
[   33.298666] Dumping ftrace buffer:
[   33.302233]    (ftrace buffer empty)
[   33.305910] Kernel Offset: disabled
[   33.309508] Rebooting in 86400 seconds..