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-4,10.128.15.225' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   23.686033] ------------[ cut here ]------------
[   23.690831] WARNING: CPU: 1 PID: 2988 at mm/slab_common.c:962 kmalloc_slab+0x5d/0x70
[   23.698862] Kernel panic - not syncing: panic_on_warn set ...
[   23.698862] 
[   23.706211] CPU: 1 PID: 2988 Comm: syzkaller804446 Not tainted 4.14.0-rc3+ #113
[   23.713626] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   23.722952] Call Trace:
[   23.725512]  dump_stack+0x194/0x257
[   23.729126]  ? arch_local_irq_restore+0x53/0x53
[   23.733786]  panic+0x1e4/0x417
[   23.736952]  ? __warn+0x1d9/0x1d9
[   23.740379]  ? show_regs_print_info+0x65/0x65
[   23.744856]  ? retint_kernel+0x10/0x10
[   23.748730]  ? kmalloc_slab+0x5d/0x70
[   23.752504]  __warn+0x1c4/0x1d9
[   23.755753]  ? kmalloc_slab+0x5f/0x70
[   23.759524]  ? kmalloc_slab+0x5d/0x70
[   23.763298]  report_bug+0x211/0x2d0
[   23.766905]  fixup_bug+0x40/0x90
[   23.770244]  do_trap+0x260/0x390
[   23.773589]  do_error_trap+0x120/0x390
[   23.777450]  ? do_trap+0x390/0x390
[   23.780964]  ? kmalloc_slab+0x5d/0x70
[   23.784746]  ? lock_release+0xd70/0xd70
[   23.788706]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   23.793525]  do_invalid_op+0x1b/0x20
[   23.797212]  invalid_op+0x18/0x20
[   23.800634] RIP: 0010:kmalloc_slab+0x5d/0x70
[   23.805012] RSP: 0018:ffff8801ceabf4b0 EFLAGS: 00010246
[   23.810360] RAX: 0000000000000000 RBX: ffff8801ceabf748 RCX: 0000000000000007
[   23.817598] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffff8801
[   23.824837] RBP: ffff8801ceabf4b0 R08: ffff8801d0babc40 R09: ffff8801ceabfb10
[   23.832075] R10: ffff8801cf3265c0 R11: 0000000000000000 R12: ffff8801ceabfab0
[   23.839315] R13: ffff8801ceabfb10 R14: 00000000014080c0 R15: ffff8801cf0d27c0
[   23.846581]  __kmalloc+0x25/0x760
[   23.850015]  ? __ipv6_dev_get_saddr+0x4f0/0x4f0
[   23.854660]  ? ip6_setup_cork+0x1e8/0x15c0
[   23.858870]  ip6_setup_cork+0x1e8/0x15c0
[   23.862908]  ? __ip6_append_data.isra.43+0x32b0/0x32b0
[   23.868167]  ip6_make_skb+0x282/0x530
[   23.871940]  ? ip_reply_glue_bits+0xb0/0xb0
[   23.876235]  ? ip6_push_pending_frames+0xe0/0xe0
[   23.880961]  ? ip6_dst_hoplimit+0x10d/0x420
[   23.885253]  ? ip6_route_output_flags+0x1f1/0x2b0
[   23.890086]  ? __lock_is_held+0xbc/0x140
[   23.894134]  ? ip6_dst_hoplimit+0xc1/0x420
[   23.898338]  ? ip6_find_1stfragopt+0x240/0x240
[   23.902898]  udpv6_sendmsg+0x2769/0x3380
[   23.906931]  ? ip_reply_glue_bits+0xb0/0xb0
[   23.911238]  ? udpv6_setsockopt+0x80/0x80
[   23.915357]  ? find_held_lock+0x39/0x1d0
[   23.919401]  ? lock_downgrade+0x990/0x990
[   23.923521]  ? lock_downgrade+0x990/0x990
[   23.927644]  ? lock_release+0xd70/0xd70
[   23.931611]  ? do_raw_spin_trylock+0x190/0x190
[   23.936170]  ? __local_bh_enable_ip+0x9d/0x160
[   23.940724]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   23.945710]  ? release_sock+0x1d4/0x2a0
[   23.949659]  ? _raw_spin_unlock_bh+0x30/0x40
[   23.954045]  ? release_sock+0x1d4/0x2a0
[   23.958009]  ? udp_v6_get_port+0x9c/0xc0
[   23.962072]  inet_sendmsg+0x11f/0x5e0
[   23.965846]  ? inet_sendmsg+0x11f/0x5e0
[   23.969791]  ? __might_sleep+0x95/0x190
[   23.973735]  ? inet_recvmsg+0x5f0/0x5f0
[   23.977682]  ? selinux_socket_sendmsg+0x36/0x40
[   23.982321]  ? security_socket_sendmsg+0x89/0xb0
[   23.987056]  ? inet_recvmsg+0x5f0/0x5f0
[   23.991008]  sock_sendmsg+0xca/0x110
[   23.994701]  SYSC_sendto+0x358/0x5a0
[   23.998391]  ? SYSC_connect+0x480/0x480
[   24.002347]  ? mm_fault_error+0x2c0/0x2c0
[   24.006469]  ? ipv6_setsockopt+0xa8/0x150
[   24.010599]  ? __do_page_fault+0xd60/0xd60
[   24.014821]  ? lockdep_sys_exit+0x47/0xf0
[   24.018940]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   24.023756]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   24.028746]  SyS_sendto+0x40/0x50
[   24.032174]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   24.036901] RIP: 0033:0x43fea9
[   24.040071] RSP: 002b:00007fffc2f71678 EFLAGS: 00000217 ORIG_RAX: 000000000000002c
[   24.047763] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043fea9
[   24.055002] RDX: 0000000000000000 RSI: 000000002052bfcc RDI: 0000000000000003
[   24.062243] RBP: 0000000000000086 R08: 0000000020e0afe4 R09: 000000000000001c
[   24.069483] R10: 0000000000000000 R11: 0000000000000217 R12: 0000000000401810
[   24.076721] R13: 00000000004018a0 R14: 0000000000000000 R15: 0000000000000000
[   24.084540] Dumping ftrace buffer:
[   24.088109]    (ftrace buffer empty)
[   24.091787] Kernel Offset: disabled
[   24.095392] Rebooting in 86400 seconds..