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-386-1,10.128.0.36' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   41.208429] ------------[ cut here ]------------
[   41.213237] WARNING: CPU: 0 PID: 2982 at mm/slab_common.c:970 kmalloc_slab+0x5d/0x70
[   41.221315] Kernel panic - not syncing: panic_on_warn set ...
[   41.221315] 
[   41.228677] CPU: 0 PID: 2982 Comm: syzkaller170439 Not tainted 4.14.0-rc4+ #40
[   41.236012] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   41.245339] Call Trace:
[   41.247933]  dump_stack+0x194/0x257
[   41.251552]  ? arch_local_irq_restore+0x53/0x53
[   41.256218]  panic+0x1e4/0x417
[   41.259386]  ? __warn+0x1d9/0x1d9
[   41.262831]  ? show_regs_print_info+0x65/0x65
[   41.267330]  ? kmalloc_slab+0x5d/0x70
[   41.271104]  __warn+0x1c4/0x1d9
[   41.274361]  ? kmalloc_slab+0x5d/0x70
[   41.278145]  report_bug+0x211/0x2d0
[   41.281755]  fixup_bug+0x40/0x90
[   41.285095]  do_trap+0x260/0x390
[   41.288441]  do_error_trap+0x120/0x390
[   41.292308]  ? do_trap+0x390/0x390
[   41.295824]  ? kmalloc_slab+0x5d/0x70
[   41.299601]  ? lock_release+0xd70/0xd70
[   41.303571]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   41.308395]  do_invalid_op+0x1b/0x20
[   41.312085]  invalid_op+0x18/0x20
[   41.315510] RIP: 0010:kmalloc_slab+0x5d/0x70
[   41.319891] RSP: 0018:ffff8801ce73f310 EFLAGS: 00010246
[   41.325236] RAX: 0000000000000000 RBX: ffff8801ce73f5a8 RCX: 0000000000000007
[   41.332486] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffffffff
[   41.339729] RBP: ffff8801ce73f310 R08: ffff8801d5561700 R09: ffff8801ce73f970
[   41.346976] R10: ffff8801ceb38280 R11: 0000000000000000 R12: ffff8801ce73f910
[   41.354230] R13: ffff8801ce73f970 R14: 00000000014080c0 R15: ffff8801cff187c0
[   41.361517]  __kmalloc+0x25/0x760
[   41.364968]  ? __ipv6_dev_get_saddr+0x4f0/0x4f0
[   41.369636]  ? ip6_setup_cork+0x1e8/0x15c0
[   41.373899]  ip6_setup_cork+0x1e8/0x15c0
[   41.377960]  ? __ip6_append_data.isra.43+0x32b0/0x32b0
[   41.383255]  ip6_make_skb+0x282/0x530
[   41.387062]  ? ip_reply_glue_bits+0xb0/0xb0
[   41.391406]  ? ip6_push_pending_frames+0xe0/0xe0
[   41.396139]  ? ip6_dst_hoplimit+0x10d/0x420
[   41.400437]  ? ip6_route_output_flags+0x1f1/0x2b0
[   41.405268]  ? __lock_is_held+0xbc/0x140
[   41.409324]  ? ip6_dst_hoplimit+0xc1/0x420
[   41.413549]  ? ip6_find_1stfragopt+0x240/0x240
[   41.418119]  udpv6_sendmsg+0x2769/0x3380
[   41.422159]  ? ip_reply_glue_bits+0xb0/0xb0
[   41.426480]  ? udpv6_setsockopt+0x80/0x80
[   41.430632]  ? lock_downgrade+0x990/0x990
[   41.434770]  ? lock_downgrade+0x990/0x990
[   41.438910]  ? lock_release+0xd70/0xd70
[   41.442886]  ? __local_bh_enable_ip+0x9d/0x160
[   41.447449]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   41.452440]  ? release_sock+0x1d4/0x2a0
[   41.456408]  ? _raw_spin_unlock_bh+0x30/0x40
[   41.460798]  ? release_sock+0x1d4/0x2a0
[   41.464759]  ? udp_v6_get_port+0x9c/0xc0
[   41.468801]  inet_sendmsg+0x11f/0x5e0
[   41.472575]  ? inet_sendmsg+0x11f/0x5e0
[   41.476522]  ? __might_sleep+0x95/0x190
[   41.480731]  ? inet_recvmsg+0x5f0/0x5f0
[   41.484680]  ? selinux_socket_sendmsg+0x36/0x40
[   41.489323]  ? security_socket_sendmsg+0x89/0xb0
[   41.494066]  ? inet_recvmsg+0x5f0/0x5f0
[   41.498030]  sock_sendmsg+0xca/0x110
[   41.501748]  SYSC_sendto+0x358/0x5a0
[   41.505455]  ? SYSC_connect+0x480/0x480
[   41.509440]  ? __handle_mm_fault+0x39c0/0x39c0
[   41.514170]  ? vmacache_find+0x5f/0x280
[   41.518130]  ? up_read+0x1a/0x40
[   41.521471]  ? __do_page_fault+0x3d6/0xd60
[   41.525695]  SyS_sendto+0x40/0x50
[   41.529126]  ? SyS_getpeername+0x30/0x30
[   41.533178]  do_fast_syscall_32+0x3f2/0xf05
[   41.537496]  ? do_int80_syscall_32+0x940/0x940
[   41.542057]  ? kasan_check_read+0x11/0x20
[   41.546196]  ? syscall_return_slowpath+0x510/0x510
[   41.551109]  ? SyS_rt_sigaction+0x94/0x1b0
[   41.555331]  ? lockdep_sys_exit+0x47/0xf0
[   41.559540]  ? retint_user+0x18/0x20
[   41.563234]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   41.568054]  entry_SYSENTER_compat+0x51/0x60
[   41.572432] RIP: 0023:0xf7f35c79
[   41.575779] RSP: 002b:00000000ffaf04fc EFLAGS: 00000286 ORIG_RAX: 0000000000000171
[   41.583478] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000002052bfcc
[   41.590730] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020e0afe4
[   41.597975] RBP: 000000000000001c R08: 0000000000000000 R09: 0000000000000000
[   41.605223] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   41.612472] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   41.620249] Dumping ftrace buffer:
[   41.623821]    (ftrace buffer empty)
[   41.628264] Kernel Offset: disabled
[   41.631875] Rebooting in 86400 seconds..