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-mmots-kasan-gce-5,10.128.15.203' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   32.262268] ------------[ cut here ]------------
[   32.267083] WARNING: CPU: 0 PID: 2985 at mm/slab_common.c:1001 kmalloc_slab+0x5d/0x70
[   32.275278] Kernel panic - not syncing: panic_on_warn set ...
[   32.275278] 
[   32.282617] CPU: 0 PID: 2985 Comm: syzkaller559341 Not tainted 4.14.0-rc3-mm1+ #13
[   32.290294] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   32.299620] Call Trace:
[   32.302186]  dump_stack+0x194/0x257
[   32.305790]  ? arch_local_irq_restore+0x53/0x53
[   32.310441]  panic+0x1e4/0x41c
[   32.313605]  ? refcount_error_report+0x214/0x214
[   32.318331]  ? show_regs_print_info+0x65/0x65
[   32.322809]  ? kmalloc_slab+0x5d/0x70
[   32.326581]  __warn+0x1c4/0x1e0
[   32.329830]  ? kmalloc_slab+0x5d/0x70
[   32.333606]  report_bug+0x211/0x2d0
[   32.337210]  fixup_bug+0x40/0x90
[   32.340548]  do_trap+0x260/0x390
[   32.343895]  do_error_trap+0x120/0x390
[   32.347759]  ? do_trap+0x390/0x390
[   32.351272]  ? kmalloc_slab+0x5d/0x70
[   32.355048]  ? lock_release+0xd70/0xd70
[   32.359017]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   32.363869]  do_invalid_op+0x1b/0x20
[   32.367575]  invalid_op+0x18/0x20
[   32.371000] RIP: 0010:kmalloc_slab+0x5d/0x70
[   32.375378] RSP: 0018:ffff8801cdd6f4b0 EFLAGS: 00010246
[   32.380714] RAX: 0000000000000000 RBX: ffff8801cdd6f748 RCX: 0000000000000007
[   32.387953] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffff8801
[   32.395193] RBP: ffff8801cdd6f4b0 R08: ffff8801d6216700 R09: ffff8801cdd6fb10
[   32.402433] R10: ffff8801cdfa4280 R11: 0000000000000000 R12: ffff8801cdd6fab0
[   32.409673] R13: ffff8801cdd6fb10 R14: 00000000014080c0 R15: ffff8801ce0af7c0
[   32.416937]  __kmalloc+0x25/0x760
[   32.420370]  ? __ipv6_dev_get_saddr+0x4f0/0x4f0
[   32.425010]  ? ip6_setup_cork+0x1e8/0x15c0
[   32.429220]  ip6_setup_cork+0x1e8/0x15c0
[   32.433260]  ? __ip6_append_data.isra.43+0x32b0/0x32b0
[   32.438518]  ip6_make_skb+0x282/0x530
[   32.442294]  ? ip_reply_glue_bits+0xb0/0xb0
[   32.446589]  ? ip6_push_pending_frames+0xe0/0xe0
[   32.451315]  ? ip6_dst_hoplimit+0x10d/0x420
[   32.455609]  ? ip6_route_output_flags+0x1f1/0x2b0
[   32.460436]  ? __lock_is_held+0xbc/0x140
[   32.464480]  ? ip6_dst_hoplimit+0xc1/0x420
[   32.468687]  ? ip6_find_1stfragopt+0x240/0x240
[   32.473255]  udpv6_sendmsg+0x2769/0x3380
[   32.477296]  ? ip_reply_glue_bits+0xb0/0xb0
[   32.481603]  ? udpv6_setsockopt+0x80/0x80
[   32.485719]  ? find_held_lock+0x39/0x1d0
[   32.489763]  ? lock_downgrade+0x990/0x990
[   32.493881]  ? lock_downgrade+0x990/0x990
[   32.498001]  ? lock_release+0xd70/0xd70
[   32.501957]  ? do_raw_spin_trylock+0x190/0x190
[   32.506516]  ? __local_bh_enable_ip+0x9d/0x160
[   32.511072]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   32.516058]  ? release_sock+0x1d4/0x2a0
[   32.520006]  ? _raw_spin_unlock_bh+0x30/0x40
[   32.524384]  ? release_sock+0x1d4/0x2a0
[   32.528337]  ? udp_v6_get_port+0x9c/0xc0
[   32.532377]  inet_sendmsg+0x11f/0x5e0
[   32.536147]  ? inet_sendmsg+0x11f/0x5e0
[   32.540093]  ? __might_sleep+0x95/0x190
[   32.544041]  ? inet_recvmsg+0x5f0/0x5f0
[   32.547990]  ? selinux_socket_sendmsg+0x36/0x40
[   32.552631]  ? security_socket_sendmsg+0x89/0xb0
[   32.557359]  ? inet_recvmsg+0x5f0/0x5f0
[   32.561308]  sock_sendmsg+0xca/0x110
[   32.564997]  SYSC_sendto+0x358/0x5a0
[   32.568688]  ? SYSC_connect+0x480/0x480
[   32.572646]  ? mm_fault_error+0x2c0/0x2c0
[   32.576770]  ? ipv6_setsockopt+0xa8/0x150
[   32.580902]  ? __do_page_fault+0xd60/0xd60
[   32.585123]  ? lockdep_sys_exit+0x47/0xf0
[   32.589244]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   32.594060]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   32.599050]  SyS_sendto+0x40/0x50
[   32.602479]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   32.607204] RIP: 0033:0x43fea9
[   32.610370] RSP: 002b:00007ffe493f3518 EFLAGS: 00000217 ORIG_RAX: 000000000000002c
[   32.618051] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 000000000043fea9
[   32.625289] RDX: 0000000000000000 RSI: 000000002052bfcc RDI: 0000000000000003
[   32.632528] RBP: 0000000000000086 R08: 0000000020e0afe4 R09: 000000000000001c
[   32.639767] R10: 0000000000000000 R11: 0000000000000217 R12: 0000000000401810
[   32.647008] R13: 00000000004018a0 R14: 0000000000000000 R15: 0000000000000000
[   32.654403] Dumping ftrace buffer:
[   32.657953]    (ftrace buffer empty)
[   32.661726] Kernel Offset: disabled
[   32.665334] Rebooting in 86400 seconds..