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-0,10.128.0.62' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   52.860960] ------------[ cut here ]------------
[   52.861721] WARNING: CPU: 1 PID: 2986 at mm/slab_common.c:970 kmalloc_slab+0x5d/0x70
[   52.862913] Kernel panic - not syncing: panic_on_warn set ...
[   52.862913] 
[   52.863899] CPU: 1 PID: 2986 Comm: syzkaller154891 Not tainted 4.14.0-rc4+ #131
[   52.864878] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   52.866104] Call Trace:
[   52.866471]  dump_stack+0x194/0x257
[   52.866970]  ? arch_local_irq_restore+0x53/0x53
[   52.867611]  panic+0x1e4/0x417
[   52.868061]  ? __warn+0x1d9/0x1d9
[   52.868563]  ? show_regs_print_info+0x65/0x65
[   52.869210]  ? kmalloc_slab+0x5d/0x70
[   52.869727]  __warn+0x1c4/0x1d9
[   52.870176]  ? kmalloc_slab+0x5d/0x70
[   52.870695]  report_bug+0x211/0x2d0
[   52.871197]  fixup_bug+0x40/0x90
[   52.871671]  do_trap+0x260/0x390
[   52.872138]  do_error_trap+0x120/0x390
[   52.872670]  ? do_trap+0x390/0x390
[   52.873166]  ? kmalloc_slab+0x5d/0x70
[   52.873683]  ? lock_release+0xd70/0xd70
[   52.874229]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   52.874886]  do_invalid_op+0x1b/0x20
[   52.875407]  invalid_op+0x18/0x20
[   52.875878] RIP: 0010:kmalloc_slab+0x5d/0x70
[   52.876491] RSP: 0018:ffff8801ce03f4b0 EFLAGS: 00010246
[   52.877242] RAX: 0000000000000000 RBX: ffff8801ce03f748 RCX: 0000000000000007
[   52.878200] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffff8801
[   52.879161] RBP: ffff8801ce03f4b0 R08: ffff8801ceb3e8c0 R09: ffff8801ce03fb10
[   52.880140] R10: ffff8801ce9a00c0 R11: 0000000000000000 R12: ffff8801ce03fab0
[   52.881101] R13: ffff8801ce03fb10 R14: 00000000014080c0 R15: ffff8801ce45f7c0
[   52.888363]  __kmalloc+0x25/0x760
[   52.891796]  ? __ipv6_dev_get_saddr+0x4f0/0x4f0
[   52.896435]  ? ip6_setup_cork+0x1e8/0x15c0
[   52.900646]  ip6_setup_cork+0x1e8/0x15c0
[   52.904688]  ? __ip6_append_data.isra.43+0x32b0/0x32b0
[   52.909947]  ip6_make_skb+0x282/0x530
[   52.913721]  ? ip_reply_glue_bits+0xb0/0xb0
[   52.918018]  ? ip6_push_pending_frames+0xe0/0xe0
[   52.922748]  ? ip6_dst_hoplimit+0x10d/0x420
[   52.927041]  ? ip6_route_output_flags+0x1f1/0x2b0
[   52.931866]  ? __lock_is_held+0xbc/0x140
[   52.935911]  ? ip6_dst_hoplimit+0xc1/0x420
[   52.940124]  ? ip6_find_1stfragopt+0x240/0x240
[   52.944686]  udpv6_sendmsg+0x2769/0x3380
[   52.948721]  ? ip_reply_glue_bits+0xb0/0xb0
[   52.953029]  ? udpv6_setsockopt+0x80/0x80
[   52.957151]  ? find_held_lock+0x39/0x1d0
[   52.961195]  ? lock_downgrade+0x990/0x990
[   52.965315]  ? lock_downgrade+0x990/0x990
[   52.969576]  ? lock_release+0xd70/0xd70
[   52.973534]  ? do_raw_spin_trylock+0x190/0x190
[   52.978092]  ? __local_bh_enable_ip+0x9d/0x160
[   52.982651]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   52.987638]  ? release_sock+0x1d4/0x2a0
[   52.991589]  ? _raw_spin_unlock_bh+0x30/0x40
[   52.995968]  ? release_sock+0x1d4/0x2a0
[   52.999923]  ? udp_v6_get_port+0x9c/0xc0
[   53.003964]  inet_sendmsg+0x11f/0x5e0
[   53.007734]  ? inet_sendmsg+0x11f/0x5e0
[   53.011681]  ? __might_sleep+0x95/0x190
[   53.015628]  ? inet_recvmsg+0x5f0/0x5f0
[   53.019578]  ? selinux_socket_sendmsg+0x36/0x40
[   53.024218]  ? security_socket_sendmsg+0x89/0xb0
[   53.028949]  ? inet_recvmsg+0x5f0/0x5f0
[   53.032899]  sock_sendmsg+0xca/0x110
[   53.036591]  SYSC_sendto+0x358/0x5a0
[   53.040283]  ? SYSC_connect+0x480/0x480
[   53.044243]  ? mm_fault_error+0x2c0/0x2c0
[   53.048365]  ? ipv6_setsockopt+0xa8/0x150
[   53.052499]  ? __do_page_fault+0xd60/0xd60
[   53.056720]  ? lockdep_sys_exit+0x47/0xf0
[   53.060843]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   53.065662]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   53.070656]  SyS_sendto+0x40/0x50
[   53.074087]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   53.078817] RIP: 0033:0x43fea9
[   53.081980] RSP: 002b:00007ffd3f1d02a8 EFLAGS: 00000217 ORIG_RAX: 000000000000002c
[   53.089666] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043fea9
[   53.096922] RDX: 0000000000000000 RSI: 000000002052bfcc RDI: 0000000000000003
[   53.104164] RBP: 0000000000000086 R08: 0000000020e0afe4 R09: 000000000000001c
[   53.111405] R10: 0000000000000000 R11: 0000000000000217 R12: 04a17b4203d90165
[   53.118648] R13: 0100000000000000 R14: 0000000000000000 R15: 0000000000000000
[   53.126050] Dumping ftrace buffer:
[   53.129648]    (ftrace buffer empty)
[   53.133333] Kernel Offset: disabled
[   53.136942] Rebooting in 86400 seconds..