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-0,10.128.15.216' (ECDSA) to the list of known hosts.
2017/10/20 11:52:19 parsed 1 programs
2017/10/20 11:52:19 executed programs: 0
2017/10/20 11:52:24 executed programs: 58
syzkaller login: [   48.344250] ==================================================================
[   48.345319] BUG: KASAN: use-after-free in packet_getsockopt+0xc72/0xe00
[   48.346248] Read of size 8 at addr ffff8801d8f91858 by task syz-executor0/3203
[   48.347225] 
[   48.347459] CPU: 1 PID: 3203 Comm: syz-executor0 Not tainted 4.14.0-rc5+ #140
[   48.348424] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   48.349647] Call Trace:
[   48.350011]  dump_stack+0x194/0x257
[   48.350502]  ? arch_local_irq_restore+0x53/0x53
[   48.351141]  ? show_regs_print_info+0x65/0x65
[   48.351742]  ? lock_release+0xa40/0xa40
[   48.352281]  ? packet_getsockopt+0xc72/0xe00
[   48.352872]  print_address_description+0x73/0x250
[   48.353517]  ? packet_getsockopt+0xc72/0xe00
[   48.354109]  kasan_report+0x25b/0x340
[   48.354623]  __asan_report_load8_noabort+0x14/0x20
[   48.355300]  packet_getsockopt+0xc72/0xe00
[   48.355872]  ? packet_notifier+0x950/0x950
[   48.356440]  ? SYSC_perf_event_open+0x4c3/0x2e00
[   48.357081]  ? __fget_light+0x297/0x380
[   48.357617]  ? sock_has_perm+0x29c/0x400
[   48.358165]  ? selinux_tun_dev_create+0xc0/0xc0
[   48.358794]  ? perf_event_set_output+0x5a0/0x5a0
[   48.359440]  ? putname+0xee/0x130
[   48.359945]  ? selinux_socket_getsockopt+0x36/0x40
[   48.360605]  ? security_socket_getsockopt+0x89/0xb0
[   48.361339]  SyS_getsockopt+0x178/0x340
[   48.361881]  ? SyS_setsockopt+0x360/0x360
[   48.362440]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   48.363100]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   48.363776]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   48.364599]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   48.369320] RIP: 0033:0x452719
[   48.372486] RSP: 002b:00007f5b98c02be8 EFLAGS: 00000212 ORIG_RAX: 0000000000000037
[   48.380170] RAX: ffffffffffffffda RBX: 00000000007580d8 RCX: 0000000000452719
[   48.387415] RDX: 0000000000000015 RSI: 0000000000000107 RDI: 0000000000000010
[   48.394656] RBP: 0000000000000082 R08: 00000000208a5000 R09: 0000000000000000
[   48.401898] R10: 0000000020ec8000 R11: 0000000000000212 R12: 0000000000000000
[   48.409135] R13: 00007ffcd6754f6f R14: 00007f5b98c039c0 R15: 0000000000000004
[   48.416394] 
[   48.417990] Allocated by task 3202:
[   48.421591]  save_stack_trace+0x16/0x20
[   48.425533]  save_stack+0x43/0xd0
[   48.428953]  kasan_kmalloc+0xad/0xe0
[   48.432634]  kmem_cache_alloc_trace+0x136/0x750
[   48.437269]  fanout_add+0x27e/0x1480
[   48.440947]  packet_setsockopt+0xfdc/0x1e80
[   48.445235]  SyS_setsockopt+0x189/0x360
[   48.449175]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   48.453892] 
[   48.455485] Freed by task 3202:
[   48.458729]  save_stack_trace+0x16/0x20
[   48.462669]  save_stack+0x43/0xd0
[   48.466091]  kasan_slab_free+0x71/0xc0
[   48.469945]  kfree+0xca/0x250
[   48.473016]  fanout_add+0x432/0x1480
[   48.476696]  packet_setsockopt+0xfdc/0x1e80
[   48.480997]  SyS_setsockopt+0x189/0x360
[   48.484944]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   48.489669] 
[   48.491271] The buggy address belongs to the object at ffff8801d8f91840
[   48.491271]  which belongs to the cache kmalloc-128 of size 128
[   48.503900] The buggy address is located 24 bytes inside of
[   48.503900]  128-byte region [ffff8801d8f91840, ffff8801d8f918c0)
[   48.515655] The buggy address belongs to the page:
[   48.520551] page:ffffea000763e440 count:1 mapcount:0 mapping:ffff8801d8f91000 index:0x0
[   48.528662] flags: 0x200000000000100(slab)
[   48.532864] raw: 0200000000000100 ffff8801d8f91000 0000000000000000 0000000100000015
[   48.540709] raw: ffffea000763fbe0 ffffea000763e5a0 ffff8801dac00640 0000000000000000
[   48.548551] page dumped because: kasan: bad access detected
[   48.554229] 
[   48.555822] Memory state around the buggy address:
[   48.560714]  ffff8801d8f91700: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   48.568037]  ffff8801d8f91780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   48.575360] >ffff8801d8f91800: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
[   48.582684]                                                     ^
[   48.588877]  ffff8801d8f91880: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   48.596200]  ffff8801d8f91900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[   48.603522] ==================================================================
[   48.610842] Disabling lock debugging due to kernel taint
[   48.616351] Kernel panic - not syncing: panic_on_warn set ...
[   48.616351] 
[   48.623681] CPU: 1 PID: 3203 Comm: syz-executor0 Tainted: G    B           4.14.0-rc5+ #140
[   48.632130] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   48.641451] Call Trace:
[   48.644010]  dump_stack+0x194/0x257
[   48.647605]  ? arch_local_irq_restore+0x53/0x53
[   48.652242]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   48.656969]  ? packet_getsockopt+0xbf0/0xe00
[   48.661342]  panic+0x1e4/0x417
[   48.664501]  ? __warn+0x1d9/0x1d9
[   48.667929]  ? packet_getsockopt+0xc72/0xe00
[   48.672310]  kasan_end_report+0x50/0x50
[   48.676247]  kasan_report+0x144/0x340
[   48.680013]  __asan_report_load8_noabort+0x14/0x20
[   48.684904]  packet_getsockopt+0xc72/0xe00
[   48.689107]  ? packet_notifier+0x950/0x950
[   48.693309]  ? SYSC_perf_event_open+0x4c3/0x2e00
[   48.698034]  ? __fget_light+0x297/0x380
[   48.701977]  ? sock_has_perm+0x29c/0x400
[   48.706004]  ? selinux_tun_dev_create+0xc0/0xc0
[   48.710636]  ? perf_event_set_output+0x5a0/0x5a0
[   48.715361]  ? putname+0xee/0x130
[   48.718786]  ? selinux_socket_getsockopt+0x36/0x40
[   48.723680]  ? security_socket_getsockopt+0x89/0xb0
[   48.728667]  SyS_getsockopt+0x178/0x340
[   48.732611]  ? SyS_setsockopt+0x360/0x360
[   48.736728]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   48.741536]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   48.746519]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   48.751243]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   48.755970] RIP: 0033:0x452719
[   48.759126] RSP: 002b:00007f5b98c02be8 EFLAGS: 00000212 ORIG_RAX: 0000000000000037
[   48.766797] RAX: ffffffffffffffda RBX: 00000000007580d8 RCX: 0000000000452719
[   48.774030] RDX: 0000000000000015 RSI: 0000000000000107 RDI: 0000000000000010
[   48.781262] RBP: 0000000000000082 R08: 00000000208a5000 R09: 0000000000000000
[   48.788496] R10: 0000000020ec8000 R11: 0000000000000212 R12: 0000000000000000
[   48.795730] R13: 00007ffcd6754f6f R14: 00007f5b98c039c0 R15: 0000000000000004
[   48.803334] Dumping ftrace buffer:
[   48.806840]    (ftrace buffer empty)
[   48.810516] Kernel Offset: disabled
[   48.814111] Rebooting in 86400 seconds..