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-386-1,10.128.0.48' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   58.631220] ------------[ cut here ]------------
[   58.636009] WARNING: CPU: 1 PID: 2983 at mm/slab_common.c:970 kmalloc_slab+0x5d/0x70
[   58.643995] Kernel panic - not syncing: panic_on_warn set ...
[   58.643995] 
[   58.651330] CPU: 1 PID: 2983 Comm: syzkaller148996 Not tainted 4.14.0-rc4+ #40
[   58.658657] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   58.667981] Call Trace:
[   58.670542]  dump_stack+0x194/0x257
[   58.674145]  ? arch_local_irq_restore+0x53/0x53
[   58.678798]  panic+0x1e4/0x417
[   58.681964]  ? __warn+0x1d9/0x1d9
[   58.685387]  ? show_regs_print_info+0x65/0x65
[   58.689871]  ? kmalloc_slab+0x5d/0x70
[   58.693639]  __warn+0x1c4/0x1d9
[   58.696887]  ? kmalloc_slab+0x5d/0x70
[   58.700660]  report_bug+0x211/0x2d0
[   58.704263]  fixup_bug+0x40/0x90
[   58.707603]  do_trap+0x260/0x390
[   58.710947]  do_error_trap+0x120/0x390
[   58.714808]  ? do_trap+0x390/0x390
[   58.718317]  ? kmalloc_slab+0x5d/0x70
[   58.722091]  ? lock_release+0xd70/0xd70
[   58.726043]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   58.730864]  do_invalid_op+0x1b/0x20
[   58.734549]  invalid_op+0x18/0x20
[   58.737970] RIP: 0010:kmalloc_slab+0x5d/0x70
[   58.742347] RSP: 0018:ffff8801d0087310 EFLAGS: 00010246
[   58.747684] RAX: 0000000000000000 RBX: ffff8801d00875a8 RCX: 0000000000000007
[   58.754925] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffffffff
[   58.762163] RBP: ffff8801d0087310 R08: ffff8801d3b2d380 R09: ffff8801d0087970
[   58.769403] R10: ffff8801ceb50200 R11: 0000000000000000 R12: ffff8801d0087910
[   58.776643] R13: ffff8801d0087970 R14: 00000000014080c0 R15: ffff8801c08d57c0
[   58.783944]  __kmalloc+0x25/0x760
[   58.787383]  ? __ipv6_dev_get_saddr+0x4f0/0x4f0
[   58.792036]  ? ip6_setup_cork+0x1e8/0x15c0
[   58.796264]  ip6_setup_cork+0x1e8/0x15c0
[   58.800329]  ? __ip6_append_data.isra.43+0x32b0/0x32b0
[   58.805602]  ip6_make_skb+0x282/0x530
[   58.809380]  ? ip_reply_glue_bits+0xb0/0xb0
[   58.813677]  ? ip6_push_pending_frames+0xe0/0xe0
[   58.818410]  ? ip6_dst_hoplimit+0x10d/0x420
[   58.822716]  ? ip6_route_output_flags+0x1f1/0x2b0
[   58.827541]  ? __lock_is_held+0xbc/0x140
[   58.831589]  ? ip6_dst_hoplimit+0xc1/0x420
[   58.835799]  ? ip6_find_1stfragopt+0x240/0x240
[   58.840377]  udpv6_sendmsg+0x2769/0x3380
[   58.844423]  ? ip_reply_glue_bits+0xb0/0xb0
[   58.848732]  ? udpv6_setsockopt+0x80/0x80
[   58.852866]  ? lock_downgrade+0x990/0x990
[   58.857004]  ? lock_downgrade+0x990/0x990
[   58.861136]  ? lock_release+0xd70/0xd70
[   58.865122]  ? __local_bh_enable_ip+0x9d/0x160
[   58.869685]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   58.874673]  ? release_sock+0x1d4/0x2a0
[   58.878626]  ? _raw_spin_unlock_bh+0x30/0x40
[   58.883014]  ? release_sock+0x1d4/0x2a0
[   58.886992]  ? udp_v6_get_port+0x9c/0xc0
[   58.891038]  inet_sendmsg+0x11f/0x5e0
[   58.894810]  ? inet_sendmsg+0x11f/0x5e0
[   58.898757]  ? __might_sleep+0x95/0x190
[   58.902707]  ? inet_recvmsg+0x5f0/0x5f0
[   58.906662]  ? selinux_socket_sendmsg+0x36/0x40
[   58.911306]  ? security_socket_sendmsg+0x89/0xb0
[   58.916041]  ? inet_recvmsg+0x5f0/0x5f0
[   58.920004]  sock_sendmsg+0xca/0x110
[   58.923701]  SYSC_sendto+0x358/0x5a0
[   58.927393]  ? SYSC_connect+0x480/0x480
[   58.931372]  ? __handle_mm_fault+0x39c0/0x39c0
[   58.935932]  ? vmacache_find+0x5f/0x280
[   58.939907]  ? up_read+0x1a/0x40
[   58.943264]  ? __do_page_fault+0x3d6/0xd60
[   58.947487]  SyS_sendto+0x40/0x50
[   58.950923]  ? SyS_getpeername+0x30/0x30
[   58.954976]  do_fast_syscall_32+0x3f2/0xf05
[   58.959292]  ? do_int80_syscall_32+0x940/0x940
[   58.963849]  ? kasan_check_read+0x11/0x20
[   58.967984]  ? syscall_return_slowpath+0x510/0x510
[   58.972903]  ? SyS_rt_sigaction+0x94/0x1b0
[   58.977130]  ? lockdep_sys_exit+0x47/0xf0
[   58.981262]  ? retint_user+0x18/0x20
[   58.984965]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   58.989796]  entry_SYSENTER_compat+0x51/0x60
[   58.994184] RIP: 0023:0xf7f2bc79
[   58.997520] RSP: 002b:00000000ffee7b0c EFLAGS: 00000282 ORIG_RAX: 0000000000000171
[   59.005206] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000002052bfcc
[   59.012455] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020e0afe4
[   59.019698] RBP: 000000000000001c R08: 0000000000000000 R09: 0000000000000000
[   59.026948] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   59.034206] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   59.041603] Dumping ftrace buffer:
[   59.045228]    (ftrace buffer empty)
[   59.048914] Kernel Offset: disabled
[   59.052519] Rebooting in 86400 seconds..