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-386-2,10.128.15.203' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   21.817893] ------------[ cut here ]------------
[   21.822720] WARNING: CPU: 0 PID: 2983 at mm/slab_common.c:970 kmalloc_slab+0x5d/0x70
[   21.830775] Kernel panic - not syncing: panic_on_warn set ...
[   21.830775] 
[   21.838128] CPU: 0 PID: 2983 Comm: syzkaller619134 Not tainted 4.14.0-rc4+ #40
[   21.845460] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   21.854790] Call Trace:
[   21.857357]  dump_stack+0x194/0x257
[   21.860963]  ? arch_local_irq_restore+0x53/0x53
[   21.865621]  panic+0x1e4/0x417
[   21.868789]  ? __warn+0x1d9/0x1d9
[   21.872218]  ? show_regs_print_info+0x65/0x65
[   21.876769]  ? kmalloc_slab+0x5d/0x70
[   21.880544]  __warn+0x1c4/0x1d9
[   21.883796]  ? kmalloc_slab+0x5d/0x70
[   21.887572]  report_bug+0x211/0x2d0
[   21.891177]  fixup_bug+0x40/0x90
[   21.894639]  do_trap+0x260/0x390
[   21.897987]  do_error_trap+0x120/0x390
[   21.901852]  ? do_trap+0x390/0x390
[   21.905368]  ? kmalloc_slab+0x5d/0x70
[   21.909144]  ? lock_release+0xd70/0xd70
[   21.913111]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   21.917940]  do_invalid_op+0x1b/0x20
[   21.921636]  invalid_op+0x18/0x20
[   21.925066] RIP: 0010:kmalloc_slab+0x5d/0x70
[   21.929444] RSP: 0018:ffff8801ce47f310 EFLAGS: 00010246
[   21.934800] RAX: 0000000000000000 RBX: ffff8801ce47f5a8 RCX: 0000000000000007
[   21.942046] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffffffff
[   21.949291] RBP: ffff8801ce47f310 R08: ffff8801d3d73380 R09: ffff8801ce47f970
[   21.956596] R10: ffff8801ce9c21c0 R11: 0000000000000000 R12: ffff8801ce47f910
[   21.963886] R13: ffff8801ce47f970 R14: 00000000014080c0 R15: ffff8801c09c67c0
[   21.971205]  __kmalloc+0x25/0x760
[   21.974672]  ? __ipv6_dev_get_saddr+0x4f0/0x4f0
[   21.979354]  ? ip6_setup_cork+0x1e8/0x15c0
[   21.983603]  ip6_setup_cork+0x1e8/0x15c0
[   21.987675]  ? __ip6_append_data.isra.43+0x32b0/0x32b0
[   21.992947]  ip6_make_skb+0x282/0x530
[   21.996725]  ? ip_reply_glue_bits+0xb0/0xb0
[   22.001030]  ? ip6_push_pending_frames+0xe0/0xe0
[   22.005762]  ? ip6_dst_hoplimit+0x10d/0x420
[   22.010074]  ? ip6_route_output_flags+0x1f1/0x2b0
[   22.015079]  ? __lock_is_held+0xbc/0x140
[   22.019135]  ? ip6_dst_hoplimit+0xc1/0x420
[   22.023344]  ? ip6_find_1stfragopt+0x240/0x240
[   22.027911]  udpv6_sendmsg+0x2769/0x3380
[   22.031957]  ? ip_reply_glue_bits+0xb0/0xb0
[   22.036268]  ? udpv6_setsockopt+0x80/0x80
[   22.040407]  ? lock_downgrade+0x990/0x990
[   22.044616]  ? lock_downgrade+0x990/0x990
[   22.048824]  ? lock_release+0xd70/0xd70
[   22.052797]  ? __local_bh_enable_ip+0x9d/0x160
[   22.057356]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   22.062352]  ? release_sock+0x1d4/0x2a0
[   22.066308]  ? _raw_spin_unlock_bh+0x30/0x40
[   22.070694]  ? release_sock+0x1d4/0x2a0
[   22.074649]  ? udp_v6_get_port+0x9c/0xc0
[   22.078689]  inet_sendmsg+0x11f/0x5e0
[   22.082465]  ? inet_sendmsg+0x11f/0x5e0
[   22.086421]  ? __might_sleep+0x95/0x190
[   22.090369]  ? inet_recvmsg+0x5f0/0x5f0
[   22.094332]  ? selinux_socket_sendmsg+0x36/0x40
[   22.098975]  ? security_socket_sendmsg+0x89/0xb0
[   22.103704]  ? inet_recvmsg+0x5f0/0x5f0
[   22.107665]  sock_sendmsg+0xca/0x110
[   22.111357]  SYSC_sendto+0x358/0x5a0
[   22.115048]  ? SYSC_connect+0x480/0x480
[   22.119025]  ? __handle_mm_fault+0x39c0/0x39c0
[   22.123582]  ? vmacache_find+0x5f/0x280
[   22.127539]  ? up_read+0x1a/0x40
[   22.130896]  ? __do_page_fault+0x3d6/0xd60
[   22.135116]  SyS_sendto+0x40/0x50
[   22.138550]  ? SyS_getpeername+0x30/0x30
[   22.142592]  do_fast_syscall_32+0x3f2/0xf05
[   22.146893]  ? do_int80_syscall_32+0x940/0x940
[   22.151625]  ? kasan_check_read+0x11/0x20
[   22.155764]  ? syscall_return_slowpath+0x510/0x510
[   22.160668]  ? SyS_rt_sigaction+0x94/0x1b0
[   22.164877]  ? lockdep_sys_exit+0x47/0xf0
[   22.168994]  ? retint_user+0x18/0x20
[   22.172687]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   22.177523]  entry_SYSENTER_compat+0x51/0x60
[   22.183640] RIP: 0023:0xf7faec79
[   22.186976] RSP: 002b:00000000ffd0401c EFLAGS: 00000286 ORIG_RAX: 0000000000000171
[   22.194656] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000002052bfcc
[   22.201984] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020e0afe4
[   22.209224] RBP: 000000000000001c R08: 0000000000000000 R09: 0000000000000000
[   22.216464] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   22.223704] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   22.231099] Dumping ftrace buffer:
[   22.234682]    (ftrace buffer empty)
[   22.238369] Kernel Offset: disabled
[   22.241982] Rebooting in 86400 seconds..