INIT: Entering runlevel: 2
[[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2.
[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
Debian GNU/Linux 7 syzkaller ttyS0
Warning: Permanently added 'ci-upstream-next-kasan-gce-0,10.128.0.14' (ECDSA) to the list of known hosts.
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syzkaller login: [ 50.206210] dev_remove_pack: ffff8801cca22c00 not found
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[ 50.269765] ==================================================================
[ 50.277176] BUG: KASAN: use-after-free in __netif_receive_skb_core+0x2be3/0x33d0
[ 50.284680] Read of size 2 at addr ffff8801cc7b7180 by task swapper/1/0
[ 50.291398]
[ 50.293003] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 4.13.0-next-20170913+ #21
[ 50.300424] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 50.309749] Call Trace:
[ 50.312304]
[ 50.314429] dump_stack+0x194/0x257
[ 50.318031] ? arch_local_irq_restore+0x53/0x53
[ 50.322670] ? show_regs_print_info+0x65/0x65
[ 50.327146] ? update_stack_state+0x225/0x700
[ 50.331622] ? __netif_receive_skb_core+0x2be3/0x33d0
[ 50.336786] print_address_description+0x73/0x250
[ 50.341604] ? __netif_receive_skb_core+0x2be3/0x33d0
[ 50.346768] kasan_report+0x24e/0x340
[ 50.350543] __asan_report_load2_noabort+0x14/0x20
[ 50.355448] __netif_receive_skb_core+0x2be3/0x33d0
[ 50.360441] ? unwind_next_frame.part.6+0x1ae/0xc70
[ 50.365442] ? nf_ingress+0x9f0/0x9f0
[ 50.369214] ? unwind_dump+0x4c0/0x4c0
[ 50.373072] ? check_noncircular+0x20/0x20
[ 50.377280] ? check_noncircular+0x20/0x20
[ 50.381508] ? check_noncircular+0x20/0x20
[ 50.385723] ? __save_stack_trace+0x6e/0xd0
[ 50.390024] ? depot_save_stack+0x12c/0x490
[ 50.394327] ? find_held_lock+0x39/0x1d0
[ 50.398370] ? lock_downgrade+0x990/0x990
[ 50.402491] ? default_idle_call+0x36/0x90
[ 50.406710] ? lock_acquire+0x1d5/0x580
[ 50.410659] ? netif_receive_skb_internal+0x1d7/0x670
[ 50.415822] ? find_held_lock+0x39/0x1d0
[ 50.419863] ? pvclock_read_flags+0x160/0x160
[ 50.424328] ? lock_downgrade+0x990/0x990
[ 50.428455] ? lock_acquire+0x1d5/0x580
[ 50.432399] ? netif_receive_skb_internal+0xa2/0x670
[ 50.437482] ? ktime_get_with_offset+0x2c1/0x420
[ 50.442213] ? lock_release+0xd70/0xd70
[ 50.446154] ? ktime_get+0x3a0/0x3a0
[ 50.449851] __netif_receive_skb+0x2c/0x1b0
[ 50.454143] ? __netif_receive_skb+0x2c/0x1b0
[ 50.458612] netif_receive_skb_internal+0x10b/0x670
[ 50.463597] ? dev_cpu_dead+0xb00/0xb00
[ 50.467540] ? __alloc_pages_nodemask+0xd80/0xd80
[ 50.472354] ? net_rx_action+0x1910/0x1910
[ 50.476560] ? rcu_pm_notify+0xc0/0xc0
[ 50.480425] ? skb_gro_reset_offset+0x17b/0x300
[ 50.485067] napi_gro_receive+0x3d0/0x500
[ 50.489186] ? dev_gro_receive+0x19b0/0x19b0
[ 50.493571] ? eth_type_trans+0x2a3/0x650
[ 50.497692] ? eth_gro_receive+0x810/0x810
[ 50.501909] receive_buf+0xcc5/0x51f0
[ 50.505680] ? unwind_next_frame.part.6+0x1ae/0xc70
[ 50.510667] ? unwind_dump+0x4c0/0x4c0
[ 50.514533] ? virtnet_set_rx_mode+0x9f0/0x9f0
[ 50.519093] ? __unwind_start+0x169/0x330
[ 50.523214] ? unwind_get_return_address+0x61/0xa0
[ 50.528118] ? __save_stack_trace+0x61/0xd0
[ 50.532416] ? rcu_report_qs_rnp+0x613/0x880
[ 50.536798] ? save_stack_trace+0x16/0x20
[ 50.540917] ? __lock_acquire+0x20fd/0x4620
[ 50.545210] ? __do_softirq+0x2bb/0xbd0
[ 50.549152] ? debug_check_no_locks_freed+0x3d0/0x3d0
[ 50.554320] ? find_held_lock+0x39/0x1d0
[ 50.558361] ? debug_check_no_locks_freed+0x3d0/0x3d0
[ 50.563521] ? lock_downgrade+0x990/0x990
[ 50.567655] ? pvclock_read_flags+0x160/0x160
[ 50.572121] ? lock_release+0xd70/0xd70
[ 50.576070] ? _find_next_bit+0xee/0x120
[ 50.580108] ? sched_clock_cpu+0x1b/0x170
[ 50.584229] ? cpumask_next_wrap+0x6c/0x90
[ 50.588438] ? select_task_rq_fair+0xe9e/0x3060
[ 50.593075] ? save_stack_trace+0x16/0x20
[ 50.597194] ? check_noncircular+0x20/0x20
[ 50.601416] ? check_noncircular+0x20/0x20
[ 50.605618] ? check_noncircular+0x20/0x20
[ 50.609825] ? check_noncircular+0x20/0x20
[ 50.614031] ? __lock_is_held+0xbc/0x140
[ 50.618063] ? check_noncircular+0x20/0x20
[ 50.622266] ? check_noncircular+0x20/0x20
[ 50.626468] ? x2apic_send_IPI+0x6d/0xa0
[ 50.630505] ? native_smp_send_reschedule+0x69/0xa0
[ 50.635494] ? find_held_lock+0x39/0x1d0
[ 50.639538] ? lock_downgrade+0x990/0x990
[ 50.643652] ? lock_downgrade+0x990/0x990
[ 50.647775] ? check_noncircular+0x20/0x20
[ 50.651986] ? ttwu_do_wakeup+0x4d0/0x710
[ 50.656107] ? do_raw_spin_trylock+0x190/0x190
[ 50.660658] ? do_raw_spin_trylock+0x190/0x190
[ 50.665216] ? check_noncircular+0x20/0x20
[ 50.669427] ? trace_hardirqs_off+0xd/0x10
[ 50.673633] ? print_usage_bug+0x480/0x480
[ 50.677837] ? try_to_wake_up+0x115/0x1850
[ 50.682041] ? debug_check_no_locks_freed+0x3d0/0x3d0
[ 50.687206] ? find_held_lock+0x39/0x1d0
[ 50.691247] ? lock_downgrade+0x990/0x990
[ 50.695372] ? vring_use_dma_api+0x7f/0xa0
[ 50.699579] ? vring_unmap_one+0x49/0x3d0
[ 50.703698] ? detach_buf+0x463/0x6a0
[ 50.707480] ? virtqueue_get_buf_ctx+0x3b1/0x8b0
[ 50.712209] ? common_interrupt+0x9d/0x9d
[ 50.716333] ? detach_buf+0x6a0/0x6a0
[ 50.720110] ? unwind_next_frame.part.6+0x1ae/0xc70
[ 50.725192] virtnet_poll+0x304/0xad0
[ 50.728973] ? receive_buf+0x51f0/0x51f0
[ 50.733011] ? unwind_dump+0x4c0/0x4c0
[ 50.736878] ? net_rx_action+0x49b/0x1910
[ 50.741004] net_rx_action+0x792/0x1910
[ 50.744962] ? napi_complete_done+0x6c0/0x6c0
[ 50.749428] ? save_stack_trace+0x16/0x20
[ 50.753545] ? __lock_acquire+0x20fd/0x4620
[ 50.757851] ? debug_check_no_locks_freed+0x3d0/0x3d0
[ 50.763013] ? debug_check_no_locks_freed+0x3d0/0x3d0
[ 50.768183] ? note_gp_changes+0x650/0x650
[ 50.772387] ? print_usage_bug+0x480/0x480
[ 50.776596] ? rcu_pm_notify+0xc0/0xc0
[ 50.780466] ? rcu_read_lock_sched_held+0x108/0x120
[ 50.785453] ? __raise_softirq_irqoff+0x21c/0x2c0
[ 50.790362] ? raise_softirq+0x490/0x490
[ 50.794394] ? lock_downgrade+0x990/0x990
[ 50.798515] ? check_noncircular+0x20/0x20
[ 50.802724] ? lock_acquire+0x1d5/0x580
[ 50.806672] ? trace_hardirqs_off+0xd/0x10
[ 50.810878] ? __napi_schedule+0x25e/0x370
[ 50.815085] ? netdev_info+0x170/0x170
[ 50.818942] ? check_noncircular+0x20/0x20
[ 50.823145] ? __lock_is_held+0xbc/0x140
[ 50.827177] ? check_noncircular+0x20/0x20
[ 50.831384] ? rcu_pm_notify+0xc0/0xc0
[ 50.835257] ? rcu_read_lock_sched_held+0x108/0x120
[ 50.840244] ? __handle_irq_event_percpu+0x308/0x9d0
[ 50.845322] ? rcu_pm_notify+0xc0/0xc0
[ 50.849192] __do_softirq+0x2bb/0xbd0
[ 50.852976] ? __softirqentry_text_start+0x8/0x8
[ 50.857703] ? do_raw_spin_trylock+0x190/0x190
[ 50.862253] ? handle_irq_event_percpu+0x141/0x1b0
[ 50.867159] ? __handle_irq_event_percpu+0x9d0/0x9d0
[ 50.872242] ? _raw_spin_lock+0x32/0x40
[ 50.876191] ? _raw_spin_unlock+0x22/0x30
[ 50.880309] ? handle_edge_irq+0x2b4/0x7c0
[ 50.884523] irq_exit+0x1d3/0x210
[ 50.887945] do_IRQ+0xf6/0x190
[ 50.891114] common_interrupt+0x9d/0x9d
[ 50.895057]
[ 50.897265] RIP: 0010:native_safe_halt+0x6/0x10
[ 50.901899] RSP: 0018:ffff8801d9f97db0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff1e
[ 50.909578] RAX: dffffc0000000000 RBX: 1ffff1003b3f2fb9 RCX: 0000000000000000
[ 50.916815] RDX: 1ffffffff0b59308 RSI: 0000000000000001 RDI: ffffffff85ac9840
[ 50.924053] RBP: ffff8801d9f97db0 R08: ffffffff8161b619 R09: 0000000000000000
[ 50.931293] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff85ac9830
[ 50.938532] R13: ffff8801d9f97e68 R14: 0000000000000000 R15: ffff8801d9f8a300
[ 50.945780] ? tick_nohz_idle_enter+0xd9/0x160
[ 50.950340] default_idle+0xbf/0x460
[ 50.954023] ? __sched_text_end+0x4/0x4
[ 50.957975] ? tick_nohz_idle_enter+0xde/0x160
[ 50.962533] arch_cpu_idle+0xa/0x10
[ 50.966130] default_idle_call+0x36/0x90
[ 50.970161] do_idle+0x256/0x3b0
[ 50.973501] cpu_startup_entry+0x18/0x20
[ 50.977533] start_secondary+0x277/0x310
[ 50.981578] secondary_startup_64+0xa5/0xa5
[ 50.985886]
[ 50.987485] Allocated by task 3474:
[ 50.991084] save_stack_trace+0x16/0x20
[ 50.995029] save_stack+0x43/0xd0
[ 50.998449] kasan_kmalloc+0xad/0xe0
[ 51.002132] kmem_cache_alloc_trace+0x136/0x750
[ 51.006770] fanout_add+0xa50/0x1190
[ 51.010451] packet_setsockopt+0xfdc/0x1e80
[ 51.014757] SyS_setsockopt+0x189/0x360
[ 51.018700] entry_SYSCALL_64_fastpath+0x1f/0xbe
[ 51.023422]
[ 51.025020] Freed by task 3466:
[ 51.028267] save_stack_trace+0x16/0x20
[ 51.032209] save_stack+0x43/0xd0
[ 51.035631] kasan_slab_free+0x71/0xc0
[ 51.039487] kfree+0xca/0x250
[ 51.042561] packet_release+0xa8f/0xd70
[ 51.046503] sock_release+0x8d/0x1e0
[ 51.050186] sock_close+0x16/0x20
[ 51.053606] __fput+0x333/0x7f0
[ 51.056855] ____fput+0x15/0x20
[ 51.060103] task_work_run+0x199/0x270
[ 51.063957] do_exit+0xa52/0x1b40
[ 51.067376] do_group_exit+0x149/0x400
[ 51.071229] SyS_exit_group+0x1d/0x20
[ 51.074999] entry_SYSCALL_64_fastpath+0x1f/0xbe
[ 51.079721]
[ 51.081319] The buggy address belongs to the object at ffff8801cc7b6900
[ 51.081319] which belongs to the cache kmalloc-4096 of size 4096
[ 51.094114] The buggy address is located 2176 bytes inside of
[ 51.094114] 4096-byte region [ffff8801cc7b6900, ffff8801cc7b7900)
[ 51.106134] The buggy address belongs to the page:
[ 51.111034] page:ffffea000731ed80 count:1 mapcount:0 mapping:ffff8801cc7b6900 index:0x0 compound_mapcount: 0
[ 51.120985] flags: 0x200000000008100(slab|head)
[ 51.125623] raw: 0200000000008100 ffff8801cc7b6900 0000000000000000 0000000100000001
[ 51.133473] raw: ffffea000731e9a0 ffffea000731eea0 ffff8801dac00dc0 0000000000000000
[ 51.141491] page dumped because: kasan: bad access detected
[ 51.147164]
[ 51.148758] Memory state around the buggy address:
[ 51.153656] ffff8801cc7b7080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 51.160984] ffff8801cc7b7100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 51.168309] >ffff8801cc7b7180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 51.175634] ^
[ 51.178970] ffff8801cc7b7200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 51.186298] ffff8801cc7b7280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 51.193625] ==================================================================
[ 51.200949] Disabling lock debugging due to kernel taint
[ 51.206393] Kernel panic - not syncing: panic_on_warn set ...
[ 51.206393]
[ 51.213719] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G B 4.13.0-next-20170913+ #21
[ 51.222346] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 51.231665] Call Trace:
[ 51.234212]
[ 51.236332] dump_stack+0x194/0x257
[ 51.239924] ? arch_local_irq_restore+0x53/0x53
[ 51.244558] ? trace_hardirqs_on_thunk+0x1a/0x1c
[ 51.249283] ? __netif_receive_skb_core+0x2b90/0x33d0
[ 51.254440] panic+0x1e4/0x417
[ 51.257604] ? __warn+0x1d9/0x1d9
[ 51.261037] ? __netif_receive_skb_core+0x2be3/0x33d0
[ 51.266190] kasan_end_report+0x50/0x50
[ 51.270125] kasan_report+0x137/0x340