Warning: Permanently added '10.128.0.151' (ECDSA) to the list of known hosts.
2020/02/27 16:21:22 fuzzer started
2020/02/27 16:21:24 dialing manager at 10.128.0.105:41009
2020/02/27 16:21:24 syscalls: 2955
2020/02/27 16:21:24 code coverage: enabled
2020/02/27 16:21:24 comparison tracing: enabled
2020/02/27 16:21:24 extra coverage: enabled
2020/02/27 16:21:24 setuid sandbox: enabled
2020/02/27 16:21:24 namespace sandbox: enabled
2020/02/27 16:21:24 Android sandbox: /sys/fs/selinux/policy does not exist
2020/02/27 16:21:24 fault injection: enabled
2020/02/27 16:21:24 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/02/27 16:21:24 net packet injection: enabled
2020/02/27 16:21:24 net device setup: enabled
2020/02/27 16:21:24 concurrency sanitizer: enabled
2020/02/27 16:21:24 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 59.260003][ T7790] KCSAN: could not find function: 'poll_schedule_timeout'
[ 62.660339][ T7790] KCSAN: could not find function: '_find_next_bit'
2020/02/27 16:21:30 adding functions to KCSAN blacklist: 'snd_seq_check_queue' 'tick_nohz_idle_stop_tick' 'ext4_free_inodes_count' 'do_nanosleep' 'blk_mq_get_request' 'tick_nohz_next_event' 'kcm_rfree' 'poll_schedule_timeout' '__delete_from_page_cache' 'balance_dirty_pages' 'run_timer_softirq' 'ep_poll' 'blk_mq_dispatch_rq_list' 'ext4_writepages' '__ext4_new_inode' 'xas_find_marked' 'copyout' 'echo_char' 'ext4_mb_good_group' 'ext4_mark_iloc_dirty' 'wbt_wait' 'xas_clear_mark' 'audit_log_start' 'blk_mq_sched_dispatch_requests' '__snd_rawmidi_transmit_ack' '__mark_inode_dirty' 'ext4_nonda_switch' 'do_syslog' 'generic_fillattr' 'pcpu_alloc' 'find_get_pages_range_tag' 'generic_write_end' '_find_next_bit' 'generic_update_time' 'ext4_has_free_clusters' 'mod_timer' 'copy_process' 'add_timer' 'ktime_get_real_seconds' 'wbt_done' 'kauditd_thread' 'tick_sched_do_timer'
[ 239.427873][ C1] ==================================================================
[ 239.436889][ C1] BUG: KCSAN: data-race in virtnet_poll_tx / virtqueue_add
[ 239.444677][ C1]
[ 239.447543][ C1] write to 0xffff88821aad8e6c of 4 bytes by interrupt on cpu 0:
[ 239.456317][ C1] virtqueue_add+0x96a/0x1ab0
[ 239.461751][ C1] virtqueue_add_outbuf+0x47/0x60
[ 239.467024][ C1] start_xmit+0x5b4/0xc00
[ 239.471437][ C1] dev_hard_start_xmit+0xeb/0x420
[ 239.476741][ C1] sch_direct_xmit+0x2ae/0x8a0
[ 239.482590][ C1] __dev_queue_xmit+0x13bb/0x1b80
[ 239.488241][ C1] dev_queue_xmit+0x1e/0x30
[ 239.493244][ C1] ip_finish_output2+0x87d/0xed0
[ 239.498876][ C1] __ip_finish_output+0x22f/0x460
[ 239.504550][ C1] ip_finish_output+0x3e/0x160
[ 239.509732][ C1] ip_output+0xf2/0x240
[ 239.515436][ C1] ip_local_out+0x70/0x90
[ 239.520468][ C1] __ip_queue_xmit+0x3a6/0xa40
[ 239.525402][ C1] ip_queue_xmit+0x3e/0x50
[ 239.529817][ C1] __tcp_transmit_skb+0xe1f/0x1c90
[ 239.534935][ C1] __tcp_send_ack+0x22c/0x2f0
[ 239.539775][ C1] tcp_send_ack+0x2d/0x40
[ 239.544129][ C1] __tcp_ack_snd_check+0xcc/0x550
[ 239.549262][ C1] tcp_rcv_established+0xc95/0xee0
[ 239.554370][ C1] tcp_v4_do_rcv+0x396/0x4f0
[ 239.559225][ C1] tcp_v4_rcv+0x1bbf/0x1d80
[ 239.563837][ C1] ip_protocol_deliver_rcu+0x4b/0x410
[ 239.569664][ C1] ip_local_deliver_finish+0xf3/0x120
[ 239.575697][ C1] ip_local_deliver+0x135/0x220
[ 239.580905][ C1] ip_sublist_rcv_finish+0xf0/0x140
[ 239.587510][ C1] ip_sublist_rcv+0x3f8/0x530
[ 239.592648][ C1] ip_list_rcv+0x2f3/0x321
[ 239.597834][ C1] __netif_receive_skb_list_core+0x368/0x5c0
[ 239.604835][ C1] netif_receive_skb_list_internal+0x5c7/0x810
[ 239.611813][ C1] gro_normal_list.part.0+0x37/0xa0
[ 239.617767][ C1] gro_normal_one+0x14c/0x160
[ 239.622819][ C1] napi_gro_receive+0x27d/0x2f0
[ 239.627699][ C1] receive_buf+0x24e/0x2e20
[ 239.632836][ C1] virtnet_poll+0x343/0x790
[ 239.637433][ C1] net_rx_action+0x3ad/0xac0
[ 239.642507][ C1] __do_softirq+0x118/0x34a
[ 239.647371][ C1] irq_exit+0xb5/0xd0
[ 239.651541][ C1] do_IRQ+0x7b/0x120
[ 239.655529][ C1] ret_from_intr+0x0/0x21
[ 239.660076][ C1] native_safe_halt+0xe/0x10
[ 239.665048][ C1] default_idle+0x21/0x170
[ 239.670269][ C1] do_idle+0x1b7/0x290
[ 239.674361][ C1] cpu_startup_entry+0x14/0x20
[ 239.680670][ C1] rest_init+0xe4/0xeb
[ 239.685167][ C1] arch_call_rest_init+0x13/0x2b
[ 239.690207][ C1] start_kernel+0xcc2/0xceb
[ 239.694726][ C1] secondary_startup_64+0xa4/0xb0
[ 239.700020][ C1]
[ 239.702352][ C1] read to 0xffff88821aad8e6c of 4 bytes by interrupt on cpu 1:
[ 239.710027][ C1] virtnet_poll_tx+0x16a/0x1c0
[ 239.714999][ C1] net_rx_action+0x3ad/0xac0
[ 239.719973][ C1] __do_softirq+0x118/0x34a
[ 239.725218][ C1] irq_exit+0xb5/0xd0
[ 239.729343][ C1] do_IRQ+0x7b/0x120
[ 239.733266][ C1] ret_from_intr+0x0/0x21
[ 239.737683][ C1] native_safe_halt+0xe/0x10
[ 239.742270][ C1] default_idle+0x21/0x170
[ 239.746875][ C1] do_idle+0x1b7/0x290
[ 239.751918][ C1] cpu_startup_entry+0x14/0x20
[ 239.757053][ C1] start_secondary+0x164/0x1b0
[ 239.763118][ C1] secondary_startup_64+0xa4/0xb0
[ 239.768500][ C1]
[ 239.770821][ C1] Reported by Kernel Concurrency Sanitizer on:
[ 239.776978][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.6.0-rc1-syzkaller #0
[ 239.784856][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 239.794911][ C1] ==================================================================
[ 239.803274][ C1] Kernel panic - not syncing: panic_on_warn set ...
[ 239.810071][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.6.0-rc1-syzkaller #0
[ 239.819077][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 239.830619][ C1] Call Trace:
[ 239.834193][ C1]
[ 239.837190][ C1] dump_stack+0x11d/0x187
[ 239.841781][ C1] panic+0x210/0x640
[ 239.846035][ C1] ? vprintk_func+0x89/0x13a
[ 239.850817][ C1] kcsan_report.cold+0xc/0x14
[ 239.855755][ C1] kcsan_setup_watchpoint+0x304/0x400
[ 239.861312][ C1] virtnet_poll_tx+0x16a/0x1c0
[ 239.866372][ C1] net_rx_action+0x3ad/0xac0
[ 239.871219][ C1] __do_softirq+0x118/0x34a
[ 239.876415][ C1] irq_exit+0xb5/0xd0
[ 239.880654][ C1] do_IRQ+0x7b/0x120
[ 239.884806][ C1] common_interrupt+0xf/0xf
[ 239.889677][ C1]
[ 239.892807][ C1] RIP: 0010:native_safe_halt+0xe/0x10
[ 239.898590][ C1] Code: ff cc cc cc cc cc cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d fc 08 44 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d ec 08 44 00 fb f4 cc 41 54 55 53 e8 a7 fd 9a fc e8 12 ae b3 fd 0f 1f 44 00 00 48
[ 239.919782][ C1] RSP: 0018:ffffc90000cd3eb0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffffd9
[ 239.928657][ C1] RAX: 0000000000000001 RBX: ffff88812b786040 RCX: ffffffff82521f51
[ 239.937476][ C1] RDX: 0000000000000000 RSI: ffffffff82521f5a RDI: 0000000000000005
[ 239.945769][ C1] RBP: 0000000000000001 R08: ffff88812b786040 R09: 0000ffff8584b168
[ 239.954861][ C1] R10: 0000c90000cd3e98 R11: 0000ffff8584b16f R12: ffff88812b786040
[ 239.964037][ C1] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88812b786040
[ 239.973525][ C1] ? debug_smp_processor_id+0x31/0x129
[ 239.979661][ C1] ? debug_smp_processor_id+0x3a/0x129
[ 239.986372][ C1] default_idle+0x21/0x170
[ 239.990929][ C1] do_idle+0x1b7/0x290
[ 239.995411][ C1] ? debug_smp_processor_id+0x3a/0x129
[ 240.001113][ C1] cpu_startup_entry+0x14/0x20
[ 240.006227][ C1] start_secondary+0x164/0x1b0
[ 240.011160][ C1] secondary_startup_64+0xa4/0xb0
[ 240.017995][ C1] Kernel Offset: disabled
[ 240.022348][ C1] Rebooting in 86400 seconds..