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-386-2,10.128.0.23' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   41.685428] ------------[ cut here ]------------
[   41.690384] WARNING: CPU: 1 PID: 2984 at mm/slab_common.c:970 kmalloc_slab+0x5d/0x70
[   41.698492] Kernel panic - not syncing: panic_on_warn set ...
[   41.698492] 
[   41.705924] CPU: 1 PID: 2984 Comm: syzkaller545561 Not tainted 4.14.0-rc4+ #41
[   41.713256] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   41.722584] Call Trace:
[   41.725506]  dump_stack+0x194/0x257
[   41.729112]  ? arch_local_irq_restore+0x53/0x53
[   41.733768]  panic+0x1e4/0x417
[   41.736932]  ? __warn+0x1d9/0x1d9
[   41.740356]  ? show_regs_print_info+0x65/0x65
[   41.744839]  ? kmalloc_slab+0x5d/0x70
[   41.748610]  __warn+0x1c4/0x1d9
[   41.751860]  ? kmalloc_slab+0x5d/0x70
[   41.755634]  report_bug+0x211/0x2d0
[   41.759240]  fixup_bug+0x40/0x90
[   41.762579]  do_trap+0x260/0x390
[   41.765925]  do_error_trap+0x120/0x390
[   41.769797]  ? do_trap+0x390/0x390
[   41.773311]  ? kmalloc_slab+0x5d/0x70
[   41.777086]  ? lock_release+0xd70/0xd70
[   41.781041]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   41.785864]  do_invalid_op+0x1b/0x20
[   41.789636]  invalid_op+0x18/0x20
[   41.793061] RIP: 0010:kmalloc_slab+0x5d/0x70
[   41.797440] RSP: 0018:ffff8801ce607310 EFLAGS: 00010246
[   41.802776] RAX: 0000000000000000 RBX: ffff8801ce6075a8 RCX: 0000000000000007
[   41.810035] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffffffffffff
[   41.817276] RBP: ffff8801ce607310 R08: ffff8801ccf168c0 R09: ffff8801ce607970
[   41.824519] R10: ffff8801cf750480 R11: 0000000000000000 R12: ffff8801ce607910
[   41.831760] R13: ffff8801ce607970 R14: 00000000014080c0 R15: ffff8801c02ee7c0
[   41.839024]  __kmalloc+0x25/0x760
[   41.842456]  ? __ipv6_dev_get_saddr+0x4f0/0x4f0
[   41.847102]  ? ip6_setup_cork+0x1e8/0x15c0
[   41.851314]  ip6_setup_cork+0x1e8/0x15c0
[   41.855355]  ? __ip6_append_data.isra.43+0x32b0/0x32b0
[   41.860613]  ip6_make_skb+0x282/0x530
[   41.864388]  ? ip_reply_glue_bits+0xb0/0xb0
[   41.868682]  ? ip6_push_pending_frames+0xe0/0xe0
[   41.873410]  ? ip6_dst_hoplimit+0x10d/0x420
[   41.877706]  ? ip6_route_output_flags+0x1f1/0x2b0
[   41.882532]  ? __lock_is_held+0xbc/0x140
[   41.886577]  ? ip6_dst_hoplimit+0xc1/0x420
[   41.890784]  ? ip6_find_1stfragopt+0x240/0x240
[   41.895348]  udpv6_sendmsg+0x2769/0x3380
[   41.899386]  ? ip_reply_glue_bits+0xb0/0xb0
[   41.903692]  ? udpv6_setsockopt+0x80/0x80
[   41.907826]  ? lock_downgrade+0x990/0x990
[   41.911948]  ? lock_downgrade+0x990/0x990
[   41.916067]  ? lock_release+0xd70/0xd70
[   41.920034]  ? __local_bh_enable_ip+0x9d/0x160
[   41.924591]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   41.929580]  ? release_sock+0x1d4/0x2a0
[   41.933532]  ? _raw_spin_unlock_bh+0x30/0x40
[   41.937912]  ? release_sock+0x1d4/0x2a0
[   41.941873]  ? udp_v6_get_port+0x9c/0xc0
[   41.945935]  inet_sendmsg+0x11f/0x5e0
[   41.949708]  ? inet_sendmsg+0x11f/0x5e0
[   41.953657]  ? __might_sleep+0x95/0x190
[   41.957607]  ? inet_recvmsg+0x5f0/0x5f0
[   41.961562]  ? selinux_socket_sendmsg+0x36/0x40
[   41.966207]  ? security_socket_sendmsg+0x89/0xb0
[   41.970935]  ? inet_recvmsg+0x5f0/0x5f0
[   41.974884]  sock_sendmsg+0xca/0x110
[   41.978573]  SYSC_sendto+0x358/0x5a0
[   41.982273]  ? SYSC_connect+0x480/0x480
[   41.986256]  ? __handle_mm_fault+0x39c0/0x39c0
[   41.990811]  ? vmacache_find+0x5f/0x280
[   41.994766]  ? up_read+0x1a/0x40
[   41.998107]  ? __do_page_fault+0x3d6/0xd60
[   42.002323]  SyS_sendto+0x40/0x50
[   42.005749]  ? SyS_getpeername+0x30/0x30
[   42.009786]  do_fast_syscall_32+0x3f2/0xf05
[   42.014087]  ? do_int80_syscall_32+0x940/0x940
[   42.018652]  ? kasan_check_read+0x11/0x20
[   42.022780]  ? syscall_return_slowpath+0x510/0x510
[   42.027684]  ? SyS_rt_sigaction+0x94/0x1b0
[   42.031895]  ? lockdep_sys_exit+0x47/0xf0
[   42.036101]  ? retint_user+0x18/0x20
[   42.039790]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   42.044610]  entry_SYSENTER_compat+0x51/0x60
[   42.048988] RIP: 0023:0xf7fc1c79
[   42.052321] RSP: 002b:00000000ffbba10c EFLAGS: 00000282 ORIG_RAX: 0000000000000171
[   42.060002] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000002052bfcc
[   42.067243] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020e0afe4
[   42.074487] RBP: 000000000000001c R08: 0000000000000000 R09: 0000000000000000
[   42.081728] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   42.089643] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[   42.097443] Dumping ftrace buffer:
[   42.101010]    (ftrace buffer empty)
[   42.104696] Kernel Offset: disabled
[   42.108306] Rebooting in 86400 seconds..