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-386-0,10.128.0.58' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   33.284106] ------------[ cut here ]------------
[   33.288927] WARNING: CPU: 0 PID: 2988 at mm/slab_common.c:970 kmalloc_slab+0x5d/0x70
[   33.296978] Kernel panic - not syncing: panic_on_warn set ...
[   33.296978] 
[   33.304315] CPU: 0 PID: 2988 Comm: syzkaller517559 Not tainted 4.14.0-rc3+ #27
[   33.311643] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   33.320966] Call Trace:
[   33.323537]  dump_stack+0x194/0x257
[   33.327142]  ? arch_local_irq_restore+0x53/0x53
[   33.331798]  panic+0x1e4/0x417
[   33.334965]  ? __warn+0x1d9/0x1d9
[   33.338388]  ? show_regs_print_info+0x65/0x65
[   33.342871]  ? kmalloc_slab+0x5d/0x70
[   33.346643]  __warn+0x1c4/0x1d9
[   33.349894]  ? kmalloc_slab+0x5d/0x70
[   33.353670]  report_bug+0x211/0x2d0
[   33.357275]  fixup_bug+0x40/0x90
[   33.360615]  do_trap+0x260/0x390
[   33.363960]  do_error_trap+0x120/0x390
[   33.367823]  ? do_trap+0x390/0x390
[   33.371336]  ? kmalloc_slab+0x5d/0x70
[   33.375113]  ? lock_release+0xd70/0xd70
[   33.379067]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   33.383896]  do_invalid_op+0x1b/0x20
[   33.387584]  invalid_op+0x18/0x20
[   33.391010] RIP: 0010:kmalloc_slab+0x5d/0x70
[   33.395387] RSP: 0018:ffff8801ce5d7310 EFLAGS: 00010246
[   33.400724] RAX: 0000000000000000 RBX: ffff8801ce5d75a8 RCX: 0000000000000007
[   33.407966] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffffffff
[   33.415206] RBP: ffff8801ce5d7310 R08: ffff8801d0c26a80 R09: ffff8801ce5d7970
[   33.422448] R10: ffff8801cf274600 R11: 0000000000000000 R12: ffff8801ce5d7910
[   33.429691] R13: ffff8801ce5d7970 R14: 00000000014080c0 R15: ffff8801cf5037c0
[   33.436956]  __kmalloc+0x25/0x760
[   33.440387]  ? __ipv6_dev_get_saddr+0x4f0/0x4f0
[   33.445028]  ? ip6_setup_cork+0x1e8/0x15c0
[   33.449241]  ip6_setup_cork+0x1e8/0x15c0
[   33.453282]  ? __ip6_append_data.isra.43+0x32b0/0x32b0
[   33.458543]  ip6_make_skb+0x282/0x530
[   33.462323]  ? ip_reply_glue_bits+0xb0/0xb0
[   33.466624]  ? ip6_push_pending_frames+0xe0/0xe0
[   33.471353]  ? ip6_dst_hoplimit+0x10d/0x420
[   33.475648]  ? ip6_route_output_flags+0x1f1/0x2b0
[   33.480475]  ? __lock_is_held+0xbc/0x140
[   33.484520]  ? ip6_dst_hoplimit+0xc1/0x420
[   33.488727]  ? ip6_find_1stfragopt+0x240/0x240
[   33.493292]  udpv6_sendmsg+0x2769/0x3380
[   33.497328]  ? ip_reply_glue_bits+0xb0/0xb0
[   33.501635]  ? udpv6_setsockopt+0x80/0x80
[   33.505772]  ? lock_downgrade+0x990/0x990
[   33.509897]  ? lock_downgrade+0x990/0x990
[   33.514020]  ? lock_release+0xd70/0xd70
[   33.517988]  ? __local_bh_enable_ip+0x9d/0x160
[   33.522547]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   33.527535]  ? release_sock+0x1d4/0x2a0
[   33.531492]  ? _raw_spin_unlock_bh+0x30/0x40
[   33.535874]  ? release_sock+0x1d4/0x2a0
[   33.539832]  ? udp_v6_get_port+0x9c/0xc0
[   33.543872]  inet_sendmsg+0x11f/0x5e0
[   33.547645]  ? inet_sendmsg+0x11f/0x5e0
[   33.551591]  ? __might_sleep+0x95/0x190
[   33.555538]  ? inet_recvmsg+0x5f0/0x5f0
[   33.559490]  ? selinux_socket_sendmsg+0x36/0x40
[   33.564132]  ? security_socket_sendmsg+0x89/0xb0
[   33.568863]  ? inet_recvmsg+0x5f0/0x5f0
[   33.572813]  sock_sendmsg+0xca/0x110
[   33.576503]  SYSC_sendto+0x358/0x5a0
[   33.580198]  ? SYSC_connect+0x480/0x480
[   33.584174]  ? __handle_mm_fault+0x39c0/0x39c0
[   33.588730]  ? vmacache_find+0x5f/0x280
[   33.592694]  ? up_read+0x1a/0x40
[   33.596036]  ? __do_page_fault+0x3d6/0xd60
[   33.600256]  SyS_sendto+0x40/0x50
[   33.603684]  ? SyS_getpeername+0x30/0x30
[   33.607722]  do_fast_syscall_32+0x3f2/0xf05
[   33.612026]  ? do_int80_syscall_32+0x940/0x940
[   33.616585]  ? kasan_check_read+0x11/0x20
[   33.620709]  ? syscall_return_slowpath+0x510/0x510
[   33.625621]  ? SyS_rt_sigaction+0x94/0x1b0
[   33.629833]  ? lockdep_sys_exit+0x47/0xf0
[   33.633956]  ? retint_user+0x18/0x20
[   33.637649]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   33.642475]  entry_SYSENTER_compat+0x51/0x60
[   33.646857] RIP: 0023:0xf7f38c79
[   33.650193] RSP: 002b:00000000ff902dac EFLAGS: 00000282 ORIG_RAX: 0000000000000171
[   33.657877] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000002052bfcc
[   33.665121] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020e0afe4
[   33.672365] RBP: 000000000000001c R08: 0000000000000000 R09: 0000000000000000
[   33.679611] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   33.686855] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   33.694287] Dumping ftrace buffer:
[   33.697869]    (ftrace buffer empty)
[   33.701555] Kernel Offset: disabled
[   33.705166] Rebooting in 86400 seconds..