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-6,10.128.15.210' (ECDSA) to the list of known hosts.
2017/10/18 20:39:01 parsed 1 programs
2017/10/18 20:39:01 executed programs: 0
syzkaller login: [  115.697777] ==================================================================
[  115.698908] BUG: KASAN: use-after-free in packet_getsockopt+0xc72/0xe00
[  115.699795] Read of size 8 at addr ffff8801d0126558 by task syz-executor5/3261
[  115.700775] 
[  115.701006] CPU: 0 PID: 3261 Comm: syz-executor5 Not tainted 4.14.0-rc5-mm1+ #18
[  115.702010] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  115.703228] Call Trace:
[  115.703587]  dump_stack+0x194/0x257
[  115.704078]  ? arch_local_irq_restore+0x53/0x53
[  115.704702]  ? show_regs_print_info+0x65/0x65
[  115.705299]  ? lock_release+0xa40/0xa40
[  115.705838]  ? packet_getsockopt+0xc72/0xe00
[  115.706429]  print_address_description+0x73/0x250
[  115.707074]  ? packet_getsockopt+0xc72/0xe00
[  115.707663]  kasan_report+0x25b/0x340
[  115.708197]  __asan_report_load8_noabort+0x14/0x20
[  115.708853]  packet_getsockopt+0xc72/0xe00
[  115.709995]  ? packet_notifier+0x950/0x950
[  115.710561]  ? iput+0x540/0xaf0
[  115.711012]  ? __fget_light+0x297/0x380
[  115.711545]  ? sock_has_perm+0x29c/0x400
[  115.712095]  ? selinux_secmark_relabel_packet+0xc0/0xc0
[  115.712807]  ? free_modinfo_version+0x70/0x70
[  115.713411]  ? __sk_free+0x5c/0x230
[  115.713904]  ? sk_free+0x2f/0x40
[  115.714373]  ? selinux_socket_getsockopt+0x36/0x40
[  115.715033]  ? security_socket_getsockopt+0x89/0xb0
[  115.715709]  SyS_getsockopt+0x178/0x340
[  115.716290]  ? SyS_setsockopt+0x360/0x360
[  115.716850]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[  115.717495]  ? trace_hardirqs_on_caller+0x421/0x5c0
[  115.719706]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[  115.724437]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[  115.729157] RIP: 0033:0x452719
[  115.732314] RSP: 002b:00007f2a45499be8 EFLAGS: 00000212 ORIG_RAX: 0000000000000037
[  115.739989] RAX: ffffffffffffffda RBX: 00000000007580d8 RCX: 0000000000452719
[  115.747225] RDX: 0000000000000015 RSI: 0000000000000107 RDI: 0000000000000011
[  115.754460] RBP: 0000000000000082 R08: 00000000208a5000 R09: 0000000000000000
[  115.761698] R10: 0000000020ec8000 R11: 0000000000000212 R12: 00000000006f6560
[  115.768936] R13: 00000000ffffffff R14: 00007f2a4549a6d4 R15: 0000000000000002
[  115.776190] 
[  115.777785] Allocated by task 3257:
[  115.781380]  save_stack+0x43/0xd0
[  115.784800]  kasan_kmalloc+0xad/0xe0
[  115.788479]  kmem_cache_alloc_trace+0x136/0x750
[  115.793113]  fanout_add+0x27e/0x1480
[  115.796791]  packet_setsockopt+0xfdc/0x1e80
[  115.801076]  SyS_setsockopt+0x189/0x360
[  115.805019]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[  115.809735] 
[  115.811330] Freed by task 3257:
[  115.814577]  save_stack+0x43/0xd0
[  115.817995]  kasan_slab_free+0x71/0xc0
[  115.821845]  kfree+0xca/0x250
[  115.824916]  fanout_add+0x432/0x1480
[  115.828594]  packet_setsockopt+0xfdc/0x1e80
[  115.832880]  SyS_setsockopt+0x189/0x360
[  115.836821]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[  115.841537] 
[  115.843130] The buggy address belongs to the object at ffff8801d0126540
[  115.843130]  which belongs to the cache kmalloc-128 of size 128
[  115.855749] The buggy address is located 24 bytes inside of
[  115.855749]  128-byte region [ffff8801d0126540, ffff8801d01265c0)
[  115.867499] The buggy address belongs to the page:
[  115.872392] page:ffffea0007404980 count:1 mapcount:0 mapping:ffff8801d0126000 index:0x0
[  115.880500] flags: 0x200000000000100(slab)
[  115.884702] raw: 0200000000000100 ffff8801d0126000 0000000000000000 0000000100000015
[  115.892548] raw: ffffea000743b0a0 ffffea00074043a0 ffff8801dac00640 0000000000000000
[  115.900390] page dumped because: kasan: bad access detected
[  115.906060] 
[  115.907652] Memory state around the buggy address:
[  115.912543]  ffff8801d0126400: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[  115.919867]  ffff8801d0126480: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[  115.927191] >ffff8801d0126500: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
[  115.934511]                                                     ^
[  115.940706]  ffff8801d0126580: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[  115.948027]  ffff8801d0126600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[  115.955348] ==================================================================
[  115.962667] Disabling lock debugging due to kernel taint
[  115.968166] Kernel panic - not syncing: panic_on_warn set ...
[  115.968166] 
[  115.975495] CPU: 0 PID: 3261 Comm: syz-executor5 Tainted: G    B            4.14.0-rc5-mm1+ #18
[  115.984291] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[  115.993607] Call Trace:
[  115.996164]  dump_stack+0x194/0x257
[  115.999758]  ? arch_local_irq_restore+0x53/0x53
[  116.004395]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[  116.009115]  ? vsnprintf+0x1ed/0x1900
[  116.012882]  ? packet_getsockopt+0xbf0/0xe00
[  116.017254]  panic+0x1e4/0x41c
[  116.020413]  ? refcount_error_report+0x214/0x214
[  116.025137]  ? add_taint+0x1c/0x50
[  116.028642]  ? add_taint+0x1c/0x50
[  116.032148]  ? packet_getsockopt+0xc72/0xe00
[  116.036520]  kasan_end_report+0x50/0x50
[  116.040461]  kasan_report+0x144/0x340
[  116.044227]  __asan_report_load8_noabort+0x14/0x20
[  116.049117]  packet_getsockopt+0xc72/0xe00
[  116.053318]  ? packet_notifier+0x950/0x950
[  116.057519]  ? iput+0x540/0xaf0
[  116.060764]  ? __fget_light+0x297/0x380
[  116.064703]  ? sock_has_perm+0x29c/0x400
[  116.068731]  ? selinux_secmark_relabel_packet+0xc0/0xc0
[  116.074059]  ? free_modinfo_version+0x70/0x70
[  116.078520]  ? __sk_free+0x5c/0x230
[  116.082113]  ? sk_free+0x2f/0x40
[  116.085448]  ? selinux_socket_getsockopt+0x36/0x40
[  116.090342]  ? security_socket_getsockopt+0x89/0xb0
[  116.095327]  SyS_getsockopt+0x178/0x340
[  116.099267]  ? SyS_setsockopt+0x360/0x360
[  116.103380]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[  116.108188]  ? trace_hardirqs_on_caller+0x421/0x5c0
[  116.113169]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[  116.117890]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[  116.122607] RIP: 0033:0x452719
[  116.125761] RSP: 002b:00007f2a45499be8 EFLAGS: 00000212 ORIG_RAX: 0000000000000037
[  116.133431] RAX: ffffffffffffffda RBX: 00000000007580d8 RCX: 0000000000452719
[  116.140665] RDX: 0000000000000015 RSI: 0000000000000107 RDI: 0000000000000011
[  116.147901] RBP: 0000000000000082 R08: 00000000208a5000 R09: 0000000000000000
[  116.155136] R10: 0000000020ec8000 R11: 0000000000000212 R12: 00000000006f6560
[  116.162371] R13: 00000000ffffffff R14: 00007f2a4549a6d4 R15: 0000000000000002
[  116.169641] Dumping ftrace buffer:
[  116.173147]    (ftrace buffer empty)
[  116.176823] Kernel Offset: disabled
[  116.180415] Rebooting in 86400 seconds..