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-kasan-gce-386-4,10.128.15.200' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   45.458507] ------------[ cut here ]------------
[   45.463331] WARNING: CPU: 0 PID: 2987 at mm/slab_common.c:970 kmalloc_slab+0x5d/0x70
[   45.471371] Kernel panic - not syncing: panic_on_warn set ...
[   45.471371] 
[   45.478715] CPU: 0 PID: 2987 Comm: syzkaller203584 Not tainted 4.14.0-rc4+ #41
[   45.486048] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   45.495371] Call Trace:
[   45.497936]  dump_stack+0x194/0x257
[   45.501541]  ? arch_local_irq_restore+0x53/0x53
[   45.506199]  panic+0x1e4/0x417
[   45.509364]  ? __warn+0x1d9/0x1d9
[   45.512790]  ? show_regs_print_info+0x65/0x65
[   45.517272]  ? kmalloc_slab+0x5d/0x70
[   45.521046]  __warn+0x1c4/0x1d9
[   45.524298]  ? kmalloc_slab+0x5d/0x70
[   45.528074]  report_bug+0x211/0x2d0
[   45.531681]  fixup_bug+0x40/0x90
[   45.535022]  do_trap+0x260/0x390
[   45.538367]  do_error_trap+0x120/0x390
[   45.542232]  ? do_trap+0x390/0x390
[   45.545746]  ? kmalloc_slab+0x5d/0x70
[   45.549532]  ? lock_release+0xd70/0xd70
[   45.553490]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   45.558313]  do_invalid_op+0x1b/0x20
[   45.562004]  invalid_op+0x18/0x20
[   45.565432] RIP: 0010:kmalloc_slab+0x5d/0x70
[   45.569811] RSP: 0018:ffff8801ce167310 EFLAGS: 00010246
[   45.575149] RAX: 0000000000000000 RBX: ffff8801ce1675a8 RCX: 0000000000000007
[   45.582391] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffffffff
[   45.589631] RBP: ffff8801ce167310 R08: ffff8801c088e1c0 R09: ffff8801ce167970
[   45.596876] R10: ffff8801ceb30140 R11: 0000000000000000 R12: ffff8801ce167910
[   45.604119] R13: ffff8801ce167970 R14: 00000000014080c0 R15: ffff8801d61667c0
[   45.611387]  __kmalloc+0x25/0x760
[   45.614822]  ? __ipv6_dev_get_saddr+0x4f0/0x4f0
[   45.619463]  ? ip6_setup_cork+0x1e8/0x15c0
[   45.623676]  ip6_setup_cork+0x1e8/0x15c0
[   45.627720]  ? __ip6_append_data.isra.43+0x32b0/0x32b0
[   45.632980]  ip6_make_skb+0x282/0x530
[   45.636760]  ? ip_reply_glue_bits+0xb0/0xb0
[   45.641060]  ? ip6_push_pending_frames+0xe0/0xe0
[   45.645790]  ? ip6_dst_hoplimit+0x10d/0x420
[   45.650085]  ? ip6_route_output_flags+0x1f1/0x2b0
[   45.654913]  ? __lock_is_held+0xbc/0x140
[   45.658960]  ? ip6_dst_hoplimit+0xc1/0x420
[   45.663170]  ? ip6_find_1stfragopt+0x240/0x240
[   45.667736]  udpv6_sendmsg+0x2769/0x3380
[   45.671777]  ? ip_reply_glue_bits+0xb0/0xb0
[   45.676090]  ? udpv6_setsockopt+0x80/0x80
[   45.680225]  ? lock_downgrade+0x990/0x990
[   45.684347]  ? lock_downgrade+0x990/0x990
[   45.688471]  ? lock_release+0xd70/0xd70
[   45.692437]  ? __local_bh_enable_ip+0x9d/0x160
[   45.696995]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   45.701987]  ? release_sock+0x1d4/0x2a0
[   45.705943]  ? _raw_spin_unlock_bh+0x30/0x40
[   45.710326]  ? release_sock+0x1d4/0x2a0
[   45.714284]  ? udp_v6_get_port+0x9c/0xc0
[   45.718333]  inet_sendmsg+0x11f/0x5e0
[   45.722106]  ? inet_sendmsg+0x11f/0x5e0
[   45.726056]  ? __might_sleep+0x95/0x190
[   45.730004]  ? inet_recvmsg+0x5f0/0x5f0
[   45.733955]  ? selinux_socket_sendmsg+0x36/0x40
[   45.738608]  ? security_socket_sendmsg+0x89/0xb0
[   45.743338]  ? inet_recvmsg+0x5f0/0x5f0
[   45.747288]  sock_sendmsg+0xca/0x110
[   45.750977]  SYSC_sendto+0x358/0x5a0
[   45.754668]  ? SYSC_connect+0x480/0x480
[   45.758647]  ? __handle_mm_fault+0x39c0/0x39c0
[   45.763200]  ? vmacache_find+0x5f/0x280
[   45.767157]  ? up_read+0x1a/0x40
[   45.770500]  ? __do_page_fault+0x3d6/0xd60
[   45.774728]  SyS_sendto+0x40/0x50
[   45.778162]  ? SyS_getpeername+0x30/0x30
[   45.782200]  do_fast_syscall_32+0x3f2/0xf05
[   45.786502]  ? do_int80_syscall_32+0x940/0x940
[   45.791061]  ? kasan_check_read+0x11/0x20
[   45.795192]  ? syscall_return_slowpath+0x510/0x510
[   45.800100]  ? SyS_rt_sigaction+0x94/0x1b0
[   45.804312]  ? lockdep_sys_exit+0x47/0xf0
[   45.808432]  ? retint_user+0x18/0x20
[   45.812130]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   45.816949]  entry_SYSENTER_compat+0x51/0x60
[   45.821454] RIP: 0023:0xf7fdec79
[   45.824793] RSP: 002b:00000000ffa2c95c EFLAGS: 00000286 ORIG_RAX: 0000000000000171
[   45.832492] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000002052bfcc
[   45.839734] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020e0afe4
[   45.846988] RBP: 000000000000001c R08: 0000000000000000 R09: 0000000000000000
[   45.854229] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   45.861470] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   45.868921] Dumping ftrace buffer:
[   45.872508]    (ftrace buffer empty)
[   45.876192] Kernel Offset: disabled
[   45.879800] Rebooting in 86400 seconds..