2017/10/28 16:18:08 parsed 1 programs
2017/10/28 16:18:08 executed programs: 0
2017/10/28 16:18:13 executed programs: 23
syzkaller login: [   23.269176] ==================================================================
[   23.269995] BUG: KASAN: use-after-free in packet_getsockopt+0xc72/0xe00
[   23.270658] Read of size 8 at addr ffff88003d326b58 by task syz-executor0/3124
[   23.271393] 
[   23.271566] CPU: 2 PID: 3124 Comm: syz-executor0 Not tainted 4.14.0-rc5-next-20171018+ #8
[   23.272377] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
[   23.273205] Call Trace:
[   23.273488]  dump_stack+0x194/0x257
[   23.274401]  ? arch_local_irq_restore+0x53/0x53
[   23.274839]  ? show_regs_print_info+0x65/0x65
[   23.275227]  ? lock_release+0xa40/0xa40
[   23.275580]  ? packet_getsockopt+0xc72/0xe00
[   23.275966]  print_address_description+0x73/0x250
[   23.276393]  ? packet_getsockopt+0xc72/0xe00
[   23.276780]  kasan_report+0x25b/0x340
[   23.277120]  __asan_report_load8_noabort+0x14/0x20
[   23.277543]  packet_getsockopt+0xc72/0xe00
[   23.277907]  ? packet_notifier+0x950/0x950
[   23.278266]  ? SYSC_perf_event_open+0x4c3/0x2e00
[   23.278781]  ? __fget_light+0x297/0x380
[   23.279125]  ? sock_has_perm+0x29c/0x400
[   23.279481]  ? selinux_secmark_relabel_packet+0xc0/0xc0
[   23.279934]  ? perf_event_set_output+0x5a0/0x5a0
[   23.280364]  ? putname+0xee/0x130
[   23.280666]  ? selinux_socket_getsockopt+0x36/0x40
[   23.281096]  ? security_socket_getsockopt+0x89/0xb0
[   23.281536]  SyS_getsockopt+0x178/0x340
[   23.281878]  ? SyS_setsockopt+0x360/0x360
[   23.282236]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   23.282655]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   23.283084]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   23.283493]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   23.283899] RIP: 0033:0x447c89
[   23.284249] RSP: 002b:00007fed06654bd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000037
[   23.284963] RAX: ffffffffffffffda RBX: 00007fed066556cc RCX: 0000000000447c89
[   23.285569] RDX: 0000000000000015 RSI: 0000000000000107 RDI: 0000000000000010
[   23.286171] RBP: 0000000000000082 R08: 00000000208a5000 R09: 0000000000000000
[   23.286786] R10: 0000000020ec8000 R11: 0000000000000246 R12: 0000000000000000
[   23.287394] R13: 0000000000000000 R14: 00007fed066559c0 R15: 00007fed06655700
[   23.288073] 
[   23.288223] Allocated by task 3123:
[   23.288536]  save_stack+0x43/0xd0
[   23.288831]  kasan_kmalloc+0xad/0xe0
[   23.289143]  kmem_cache_alloc_trace+0x136/0x750
[   23.289538]  fanout_add+0x27e/0x1480
[   23.289855]  packet_setsockopt+0xfdc/0x1e80
[   23.290224]  SyS_setsockopt+0x189/0x360
[   23.290571]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   23.290970] 
[   23.291112] Freed by task 3123:
[   23.291393]  save_stack+0x43/0xd0
[   23.291691]  kasan_slab_free+0x71/0xc0
[   23.292088]  kfree+0xca/0x250
[   23.292392]  fanout_add+0x432/0x1480
[   23.292753]  packet_setsockopt+0xfdc/0x1e80
[   23.293141]  SyS_setsockopt+0x189/0x360
[   23.293475]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   23.293869] 
[   23.294013] The buggy address belongs to the object at ffff88003d326b40
[   23.294013]  which belongs to the cache kmalloc-128 of size 128
[   23.295043] The buggy address is located 24 bytes inside of
[   23.295043]  128-byte region [ffff88003d326b40, ffff88003d326bc0)
[   23.295734] The buggy address belongs to the page:
[   23.298987] page:ffffea0000f4c980 count:1 mapcount:0 mapping:ffff88003d326000 index:0x0
[   23.299735] flags: 0x100000000000100(slab)
[   23.300151] raw: 0100000000000100 ffff88003d326000 0000000000000000 0000000100000015
[   23.300845] raw: ffffea0000f47020 ffffea0000f256a0 ffff88003e800640 0000000000000000
[   23.301523] page dumped because: kasan: bad access detected
[   23.302003] 
[   23.302144] Memory state around the buggy address:
[   23.302567]  ffff88003d326a00: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   23.303209]  ffff88003d326a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   23.303848] >ffff88003d326b00: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
[   23.304868]                                                     ^
[   23.305452]  ffff88003d326b80: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   23.306098]  ffff88003d326c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   23.306732] ==================================================================
[   23.307381] Disabling lock debugging due to kernel taint
[   23.307885] Kernel panic - not syncing: panic_on_warn set ...
[   23.307885] 
[   23.313007] CPU: 2 PID: 3124 Comm: syz-executor0 Tainted: G    B            4.14.0-rc5-next-20171018+ #8
[   23.313887] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
[   23.314600] Call Trace:
[   23.314829]  dump_stack+0x194/0x257
[   23.315132]  ? arch_local_irq_restore+0x53/0x53
[   23.315499]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   23.315858]  ? vsnprintf+0x1ed/0x1900
[   23.316242]  ? packet_getsockopt+0xbf0/0xe00
[   23.316581]  panic+0x1e4/0x41c
[   23.316827]  ? refcount_error_report+0x214/0x214
[   23.317251]  ? add_taint+0x1c/0x50
[   23.317517]  ? add_taint+0x1c/0x50
[   23.317785]  ? packet_getsockopt+0xc72/0xe00
[   23.318139]  kasan_end_report+0x50/0x50
[   23.318437]  kasan_report+0x144/0x340
[   23.318723]  __asan_report_load8_noabort+0x14/0x20
[   23.319096]  packet_getsockopt+0xc72/0xe00
[   23.319416]  ? packet_notifier+0x950/0x950
[   23.319730]  ? SYSC_perf_event_open+0x4c3/0x2e00
[   23.320205]  ? __fget_light+0x297/0x380
[   23.320558]  ? sock_has_perm+0x29c/0x400
[   23.320880]  ? selinux_secmark_relabel_packet+0xc0/0xc0
[   23.321274]  ? perf_event_set_output+0x5a0/0x5a0
[   23.321631]  ? putname+0xee/0x130
[   23.321892]  ? selinux_socket_getsockopt+0x36/0x40
[   23.322262]  ? security_socket_getsockopt+0x89/0xb0
[   23.322627]  SyS_getsockopt+0x178/0x340
[   23.322918]  ? SyS_setsockopt+0x360/0x360
[   23.323225]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   23.323600]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   23.324345]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   23.324715]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   23.325070] RIP: 0033:0x447c89
[   23.325301] RSP: 002b:00007fed06654bd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000037
[   23.325853] RAX: ffffffffffffffda RBX: 00007fed066556cc RCX: 0000000000447c89
[   23.326386] RDX: 0000000000000015 RSI: 0000000000000107 RDI: 0000000000000010
[   23.326908] RBP: 0000000000000082 R08: 00000000208a5000 R09: 0000000000000000
[   23.327434] R10: 0000000020ec8000 R11: 0000000000000246 R12: 0000000000000000
[   23.327970] R13: 0000000000000000 R14: 00007fed066559c0 R15: 00007fed06655700
[   23.328683] Dumping ftrace buffer:
[   23.328963]    (ftrace buffer empty)
[   23.329237] Kernel Offset: disabled
[   23.329505] Rebooting in 86400 seconds..