2017/10/24 13:36:48 parsed 1 programs
2017/10/24 13:36:48 executed programs: 0
syzkaller login: [   26.438434] ==================================================================
[   26.439149] BUG: KASAN: use-after-free in packet_getsockopt+0xc72/0xe00
[   26.439774] Read of size 8 at addr ffff88006d0bbd98 by task syz-executor0/3067
[   26.440329] 
[   26.440457] CPU: 1 PID: 3067 Comm: syz-executor0 Not tainted 4.14.0-rc5-next-20171018+ #8
[   26.441066] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
[   26.441585] Call Trace:
[   26.441749]  dump_stack+0x194/0x257
[   26.441986]  ? arch_local_irq_restore+0x53/0x53
[   26.442268]  ? show_regs_print_info+0x65/0x65
[   26.442537]  ? lock_release+0xa40/0xa40
[   26.442791]  ? packet_getsockopt+0xc72/0xe00
[   26.443071]  print_address_description+0x73/0x250
[   26.443418]  ? packet_getsockopt+0xc72/0xe00
[   26.443748]  kasan_report+0x25b/0x340
[   26.444042]  __asan_report_load8_noabort+0x14/0x20
[   26.444380]  packet_getsockopt+0xc72/0xe00
[   26.444678]  ? packet_notifier+0x950/0x950
[   26.445032]  ? iput+0x540/0xaf0
[   26.445291]  ? __fget_light+0x297/0x380
[   26.445588]  ? sock_has_perm+0x29c/0x400
[   26.445885]  ? selinux_secmark_relabel_packet+0xc0/0xc0
[   26.446268]  ? free_modinfo_version+0x70/0x70
[   26.446676]  ? __sk_free+0x5c/0x230
[   26.447011]  ? sk_free+0x2f/0x40
[   26.447309]  ? selinux_socket_getsockopt+0x36/0x40
[   26.447608]  ? security_socket_getsockopt+0x89/0xb0
[   26.447953]  SyS_getsockopt+0x178/0x340
[   26.448739]  ? SyS_setsockopt+0x360/0x360
[   26.449123]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   26.449515]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   26.449885]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   26.450240]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   26.450530] RIP: 0033:0x447c89
[   26.450722] RSP: 002b:00007f428feb7bd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000037
[   26.451179] RAX: ffffffffffffffda RBX: 00007f428feb86cc RCX: 0000000000447c89
[   26.451606] RDX: 0000000000000015 RSI: 0000000000000107 RDI: 000000000000000b
[   26.452130] RBP: 0000000000000082 R08: 00000000208a5000 R09: 0000000000000000
[   26.452655] R10: 0000000020ec8000 R11: 0000000000000246 R12: 0000000000000000
[   26.453184] R13: 0000000000000000 R14: 00007f428feb89c0 R15: 00007f428feb8700
[   26.453721] 
[   26.453845] Allocated by task 3066:
[   26.454114]  save_stack+0x43/0xd0
[   26.454371]  kasan_kmalloc+0xad/0xe0
[   26.454641]  kmem_cache_alloc_trace+0x136/0x750
[   26.454985]  fanout_add+0x27e/0x1480
[   26.455259]  packet_setsockopt+0xfdc/0x1e80
[   26.455567]  SyS_setsockopt+0x189/0x360
[   26.455868]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   26.456241] 
[   26.456360] Freed by task 3066:
[   26.456599]  save_stack+0x43/0xd0
[   26.456855]  kasan_slab_free+0x71/0xc0
[   26.457139]  kfree+0xca/0x250
[   26.457368]  fanout_add+0x432/0x1480
[   26.457646]  packet_setsockopt+0xfdc/0x1e80
[   26.457962]  SyS_setsockopt+0x189/0x360
[   26.458255]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   26.458643] 
[   26.458797] The buggy address belongs to the object at ffff88006d0bbd80
[   26.458797]  which belongs to the cache kmalloc-128 of size 128
[   26.459655] The buggy address is located 24 bytes inside of
[   26.459655]  128-byte region [ffff88006d0bbd80, ffff88006d0bbe00)
[   26.460472] The buggy address belongs to the page:
[   26.460818] page:ffffea0001b42ec0 count:1 mapcount:0 mapping:ffff88006d0bb000 index:0xffff88006d0bb0c0
[   26.461467] flags: 0x500000000000100(slab)
[   26.461766] raw: 0500000000000100 ffff88006d0bb000 ffff88006d0bb0c0 0000000100000010
[   26.462358] raw: ffffea0001b34820 ffffea0001b42b60 ffff88003e800640 0000000000000000
[   26.463069] page dumped because: kasan: bad access detected
[   26.463585] 
[   26.463702] Memory state around the buggy address:
[   26.464056]  ffff88006d0bbc80: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
[   26.464566]  ffff88006d0bbd00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   26.465083] >ffff88006d0bbd80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   26.465740]                             ^
[   26.466113]  ffff88006d0bbe00: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00
[   26.466770]  ffff88006d0bbe80: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
[   26.467439] ==================================================================
[   26.468107] Disabling lock debugging due to kernel taint
[   26.468626] Kernel panic - not syncing: panic_on_warn set ...
[   26.468626] 
[   26.469301] CPU: 1 PID: 3067 Comm: syz-executor0 Tainted: G    B            4.14.0-rc5-next-20171018+ #8
[   26.470671] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
[   26.471413] Call Trace:
[   26.471654]  dump_stack+0x194/0x257
[   26.471997]  ? arch_local_irq_restore+0x53/0x53
[   26.472428]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   26.472861]  ? vsnprintf+0x1ed/0x1900
[   26.473205]  ? packet_getsockopt+0xbf0/0xe00
[   26.473601]  panic+0x1e4/0x41c
[   26.473891]  ? refcount_error_report+0x214/0x214
[   26.474316]  ? add_taint+0x1c/0x50
[   26.474637]  ? add_taint+0x1c/0x50
[   26.474958]  ? packet_getsockopt+0xc72/0xe00
[   26.475359]  kasan_end_report+0x50/0x50
[   26.475719]  kasan_report+0x144/0x340
[   26.476082]  __asan_report_load8_noabort+0x14/0x20
[   26.476457]  packet_getsockopt+0xc72/0xe00
[   26.476774]  ? packet_notifier+0x950/0x950
[   26.477087]  ? iput+0x540/0xaf0
[   26.477336]  ? __fget_light+0x297/0x380
[   26.477633]  ? sock_has_perm+0x29c/0x400
[   26.477942]  ? selinux_secmark_relabel_packet+0xc0/0xc0
[   26.478340]  ? free_modinfo_version+0x70/0x70
[   26.478675]  ? __sk_free+0x5c/0x230
[   26.478943]  ? sk_free+0x2f/0x40
[   26.479201]  ? selinux_socket_getsockopt+0x36/0x40
[   26.479568]  ? security_socket_getsockopt+0x89/0xb0
[   26.480083]  SyS_getsockopt+0x178/0x340
[   26.480448]  ? SyS_setsockopt+0x360/0x360
[   26.480741]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   26.481085]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   26.481440]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   26.481780]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   26.482114] RIP: 0033:0x447c89
[   26.482338] RSP: 002b:00007f428feb7bd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000037
[   26.482880] RAX: ffffffffffffffda RBX: 00007f428feb86cc RCX: 0000000000447c89
[   26.483388] RDX: 0000000000000015 RSI: 0000000000000107 RDI: 000000000000000b
[   26.483959] RBP: 0000000000000082 R08: 00000000208a5000 R09: 0000000000000000
[   26.484475] R10: 0000000020ec8000 R11: 0000000000000246 R12: 0000000000000000
[   26.484987] R13: 0000000000000000 R14: 00007f428feb89c0 R15: 00007f428feb8700
[   26.485535] Dumping ftrace buffer:
[   26.485836]    (ftrace buffer empty)
[   26.486167] Kernel Offset: disabled
[   26.486493] Rebooting in 86400 seconds..