Debian GNU/Linux 7 syzkaller ttyS0

2017/10/28 09:06:50 parsed 1 programs
2017/10/28 09:06:50 executed programs: 0
syzkaller login: [   21.725014] ==================================================================
[   21.725649] BUG: KASAN: use-after-free in packet_getsockopt+0xc72/0xe00
[   21.726150] Read of size 8 at addr ffff88003d316798 by task syz-executor0/3012
[   21.726772] 
[   21.726910] CPU: 3 PID: 3012 Comm: syz-executor0 Not tainted 4.14.0-rc5-next-20171018+ #8
[   21.727492] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
[   21.728067] Call Trace:
[   21.728278]  dump_stack+0x194/0x257
[   21.728617]  ? arch_local_irq_restore+0x53/0x53
[   21.729049]  ? show_regs_print_info+0x65/0x65
[   21.729464]  ? lock_release+0xa40/0xa40
[   21.729837]  ? packet_getsockopt+0xc72/0xe00
[   21.730153]  print_address_description+0x73/0x250
[   21.730497]  ? packet_getsockopt+0xc72/0xe00
[   21.730814]  kasan_report+0x25b/0x340
[   21.731167]  __asan_report_load8_noabort+0x14/0x20
[   21.731619]  packet_getsockopt+0xc72/0xe00
[   21.731994]  ? packet_notifier+0x950/0x950
[   21.732308]  ? SYSC_perf_event_open+0x4c3/0x2e00
[   21.732666]  ? __fget_light+0x297/0x380
[   21.732959]  ? sock_has_perm+0x29c/0x400
[   21.733263]  ? selinux_secmark_relabel_packet+0xc0/0xc0
[   21.733659]  ? perf_event_set_output+0x5a0/0x5a0
[   21.734011]  ? sk_free+0x2f/0x40
[   21.734273]  ? selinux_socket_getsockopt+0x36/0x40
[   21.734637]  ? security_socket_getsockopt+0x89/0xb0
[   21.735010]  SyS_getsockopt+0x178/0x340
[   21.735337]  ? SyS_setsockopt+0x360/0x360
[   21.735684]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   21.736046]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   21.736416]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   21.736771]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   21.737122] RIP: 0033:0x447c89
[   21.737354] RSP: 002b:00007f48262e6bd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000037
[   21.737931] RAX: ffffffffffffffda RBX: 00007f48262e76cc RCX: 0000000000447c89
[   21.738467] RDX: 0000000000000015 RSI: 0000000000000107 RDI: 0000000000000011
[   21.739082] RBP: 0000000000000082 R08: 00000000208a5000 R09: 0000000000000000
[   21.739742] R10: 0000000020ec8000 R11: 0000000000000246 R12: 0000000000000000
[   21.740400] R13: 0000000000000000 R14: 00007f48262e79c0 R15: 00007f48262e7700
[   21.741071] 
[   21.741220] Allocated by task 3011:
[   21.741518]  save_stack+0x43/0xd0
[   21.741775]  kasan_kmalloc+0xad/0xe0
[   21.742023]  kmem_cache_alloc_trace+0x136/0x750
[   21.742310]  fanout_add+0x27e/0x1480
[   21.742862]  packet_setsockopt+0xfdc/0x1e80
[   21.743183]  SyS_setsockopt+0x189/0x360
[   21.743479]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   21.743824] 
[   21.743945] Freed by task 3011:
[   21.744181]  save_stack+0x43/0xd0
[   21.744435]  kasan_slab_free+0x71/0xc0
[   21.744720]  kfree+0xca/0x250
[   21.744947]  fanout_add+0x432/0x1480
[   21.745196]  packet_setsockopt+0xfdc/0x1e80
[   21.745455]  SyS_setsockopt+0x189/0x360
[   21.745690]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   21.745965] 
[   21.746064] The buggy address belongs to the object at ffff88003d316780
[   21.746064]  which belongs to the cache kmalloc-128 of size 128
[   21.746954] The buggy address is located 24 bytes inside of
[   21.746954]  128-byte region [ffff88003d316780, ffff88003d316800)
[   21.747810] The buggy address belongs to the page:
[   21.748170] page:ffffea0000f4c580 count:1 mapcount:0 mapping:ffff88003d316000 index:0x0
[   21.748765] flags: 0x100000000000100(slab)
[   21.749078] raw: 0100000000000100 ffff88003d316000 0000000000000000 0000000100000015
[   21.749657] raw: ffffea0000f54a60 ffffea0000f23320 ffff88003e800640 0000000000000000
[   21.750228] page dumped because: kasan: bad access detected
[   21.750644] 
[   21.750764] Memory state around the buggy address:
[   21.751126]  ffff88003d316680: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
[   21.751666]  ffff88003d316700: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   21.752204] >ffff88003d316780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[   21.752746]                             ^
[   21.753037]  ffff88003d316800: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
[   21.753545]  ffff88003d316880: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
[   21.754135] ==================================================================
[   21.754676] Disabling lock debugging due to kernel taint
[   21.755087] Kernel panic - not syncing: panic_on_warn set ...
[   21.755087] 
[   21.755647] CPU: 3 PID: 3012 Comm: syz-executor0 Tainted: G    B            4.14.0-rc5-next-20171018+ #8
[   21.756375] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
[   21.757049] Call Trace:
[   21.757298]  dump_stack+0x194/0x257
[   21.757578]  ? arch_local_irq_restore+0x53/0x53
[   21.757962]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   21.758426]  ? vsnprintf+0x1ed/0x1900
[   21.758775]  ? packet_getsockopt+0xbf0/0xe00
[   21.759163]  panic+0x1e4/0x41c
[   21.759430]  ? refcount_error_report+0x214/0x214
[   21.759790]  ? add_taint+0x1c/0x50
[   21.760066]  ? add_taint+0x1c/0x50
[   21.760410]  ? packet_getsockopt+0xc72/0xe00
[   21.760801]  kasan_end_report+0x50/0x50
[   21.761151]  kasan_report+0x144/0x340
[   21.761446]  __asan_report_load8_noabort+0x14/0x20
[   21.761832]  packet_getsockopt+0xc72/0xe00
[   21.762154]  ? packet_notifier+0x950/0x950
[   21.762524]  ? SYSC_perf_event_open+0x4c3/0x2e00
[   21.762901]  ? __fget_light+0x297/0x380
[   21.763192]  ? sock_has_perm+0x29c/0x400
[   21.763907]  ? selinux_secmark_relabel_packet+0xc0/0xc0
[   21.764354]  ? perf_event_set_output+0x5a0/0x5a0
[   21.764789]  ? sk_free+0x2f/0x40
[   21.765104]  ? selinux_socket_getsockopt+0x36/0x40
[   21.765557]  ? security_socket_getsockopt+0x89/0xb0
[   21.766019]  SyS_getsockopt+0x178/0x340
[   21.766423]  ? SyS_setsockopt+0x360/0x360
[   21.766832]  ? entry_SYSCALL_64_fastpath+0x5/0xbe
[   21.767271]  ? trace_hardirqs_on_caller+0x421/0x5c0
[   21.767596]  ? trace_hardirqs_on_thunk+0x1a/0x1c
[   21.767878]  entry_SYSCALL_64_fastpath+0x1f/0xbe
[   21.768158] RIP: 0033:0x447c89
[   21.768345] RSP: 002b:00007f48262e6bd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000037
[   21.768820] RAX: ffffffffffffffda RBX: 00007f48262e76cc RCX: 0000000000447c89
[   21.769290] RDX: 0000000000000015 RSI: 0000000000000107 RDI: 0000000000000011
[   21.769850] RBP: 0000000000000082 R08: 00000000208a5000 R09: 0000000000000000
[   21.770383] R10: 0000000020ec8000 R11: 0000000000000246 R12: 0000000000000000
[   21.770912] R13: 0000000000000000 R14: 00007f48262e79c0 R15: 00007f48262e7700
[   21.771500] Dumping ftrace buffer:
[   21.771760]    (ftrace buffer empty)
[   21.772028] Kernel Offset: disabled
[   21.772296] Rebooting in 86400 seconds..