Warning: Permanently added '10.128.0.100' (ECDSA) to the list of known hosts.
2020/03/24 13:49:23 fuzzer started
2020/03/24 13:49:25 dialing manager at 10.128.0.105:37639
2020/03/24 13:49:25 syscalls: 2955
2020/03/24 13:49:25 code coverage: enabled
2020/03/24 13:49:25 comparison tracing: enabled
2020/03/24 13:49:25 extra coverage: enabled
2020/03/24 13:49:25 setuid sandbox: enabled
2020/03/24 13:49:25 namespace sandbox: enabled
2020/03/24 13:49:25 Android sandbox: /sys/fs/selinux/policy does not exist
2020/03/24 13:49:25 fault injection: enabled
2020/03/24 13:49:25 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/03/24 13:49:25 net packet injection: enabled
2020/03/24 13:49:25 net device setup: enabled
2020/03/24 13:49:25 concurrency sanitizer: enabled
2020/03/24 13:49:25 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 58.352844][ T7755] KCSAN: could not find function: '_find_next_bit'
[ 60.119183][ T7755] KCSAN: could not find function: 'poll_schedule_timeout'
[ 60.916680][ T7755] KCSAN: could not find function: '__bpf_lru_list_rotate_inactive'
2020/03/24 13:49:31 adding functions to KCSAN blacklist: 'mod_timer' 'do_syslog' 'tick_nohz_idle_stop_tick' 'kauditd_thread' 'xas_find_marked' 'wbt_issue' 'n_tty_receive_buf_common' 'find_get_pages_range_tag' 'shmem_getpage_gfp' 'generic_file_read_iter' 'blk_mq_dispatch_rq_list' '__ext4_new_inode' '_find_next_bit' 'echo_char' 'copy_process' 'wbt_done' 'ext4_nonda_switch' 'ext4_has_free_clusters' 'lruvec_lru_size' 'ext4_mb_find_by_goal' 'generic_fillattr' 'blk_mq_get_request' 'do_exit' 'snd_seq_prioq_cell_out' 'ep_poll' 'tick_sched_do_timer' 'poll_schedule_timeout' 'lookup_fast' 'ext4_mark_iloc_dirty' 'get_cpu_iowait_time_us' 'futex_wait_queue_me' '__filemap_fdatawrite_range' '__bpf_lru_list_shrink' '__bpf_lru_list_rotate_inactive' 'run_timer_softirq' 'xas_clear_mark' 'do_nanosleep' 'audit_log_start' 'ext4_free_inodes_count' 'add_timer' 'ktime_get_real_seconds' 'generic_write_end' 'ext4_writepages' 'blk_mq_sched_dispatch_requests' 'ondemand_readahead'
[ 143.515646][ C1] ==================================================================
[ 143.523790][ C1] BUG: KCSAN: data-race in timer_clear_idle / trigger_dyntick_cpu.isra.0
[ 143.532189][ C1]
[ 143.534512][ C1] write to 0xffff88812c01dbe4 of 1 bytes by task 0 on cpu 0:
[ 143.542036][ C1] timer_clear_idle+0x3d/0x50
[ 143.546737][ C1] __tick_nohz_idle_restart_tick+0x32/0x1a0
[ 143.553167][ C1] tick_nohz_idle_exit+0x19c/0x1d0
[ 143.558262][ C1] do_idle+0xac/0x290
[ 143.562251][ C1] cpu_startup_entry+0x14/0x20
[ 143.566999][ C1] rest_init+0xe4/0xeb
[ 143.571070][ C1] arch_call_rest_init+0x13/0x2b
[ 143.576019][ C1] start_kernel+0xcc2/0xceb
[ 143.580515][ C1] secondary_startup_64+0xa4/0xb0
[ 143.587104][ C1]
[ 143.591176][ C1] read to 0xffff88812c01dbe4 of 1 bytes by interrupt on cpu 1:
[ 143.598761][ C1] trigger_dyntick_cpu.isra.0+0x6d/0xf0
[ 143.606381][ C1] mod_timer+0x50e/0x830
[ 143.610628][ C1] sk_reset_timer+0x29/0xc0
[ 143.615129][ C1] tcp_send_delayed_ack+0x1fd/0x280
[ 143.620325][ C1] __tcp_ack_snd_check+0x3bb/0x550
[ 143.625507][ C1] tcp_rcv_established+0xc95/0xee0
[ 143.630650][ C1] tcp_v4_do_rcv+0x396/0x4f0
[ 143.635237][ C1] tcp_v4_rcv+0x1bbf/0x1d80
[ 143.639739][ C1] ip_protocol_deliver_rcu+0x4b/0x410
[ 143.645105][ C1] ip_local_deliver_finish+0xf3/0x120
[ 143.650484][ C1] ip_local_deliver+0x135/0x220
[ 143.655438][ C1] ip_sublist_rcv_finish+0xf0/0x140
[ 143.661925][ C1] ip_sublist_rcv+0x3f8/0x530
[ 143.667039][ C1] ip_list_rcv+0x2f3/0x321
[ 143.671453][ C1] __netif_receive_skb_list_core+0x368/0x5c0
[ 143.677422][ C1] netif_receive_skb_list_internal+0x5c7/0x810
[ 143.683647][ C1] gro_normal_list.part.0+0x37/0xa0
[ 143.688826][ C1] gro_normal_one+0x14c/0x160
[ 143.693687][ C1] napi_gro_receive+0x27d/0x2f0
[ 143.698796][ C1] receive_buf+0x24e/0x2e20
[ 143.703465][ C1] virtnet_poll+0x343/0x790
[ 143.708198][ C1] net_rx_action+0x3ad/0xac0
[ 143.712792][ C1] __do_softirq+0x118/0x34a
[ 143.717805][ C1] irq_exit+0xb5/0xd0
[ 143.721774][ C1] do_IRQ+0x7b/0x120
[ 143.725665][ C1] ret_from_intr+0x0/0x21
[ 143.730000][ C1] native_safe_halt+0xe/0x10
[ 143.735011][ C1] default_idle+0x21/0x170
[ 143.739487][ C1] do_idle+0x1b7/0x290
[ 143.743537][ C1] cpu_startup_entry+0x14/0x20
[ 143.748287][ C1] start_secondary+0x164/0x1b0
[ 143.753051][ C1] secondary_startup_64+0xa4/0xb0
[ 143.758053][ C1]
[ 143.760363][ C1] Reported by Kernel Concurrency Sanitizer on:
[ 143.766510][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.6.0-rc1-syzkaller #0
[ 143.774494][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 143.784553][ C1] ==================================================================
[ 143.792612][ C1] Kernel panic - not syncing: panic_on_warn set ...
[ 143.799180][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.6.0-rc1-syzkaller #0
[ 143.808001][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 143.818504][ C1] Call Trace:
[ 143.821765][ C1]
[ 143.824604][ C1] dump_stack+0x11d/0x187
[ 143.828919][ C1] panic+0x210/0x640
[ 143.832817][ C1] ? vprintk_func+0x89/0x13a
[ 143.837403][ C1] kcsan_report.cold+0xc/0xf
[ 143.841986][ C1] kcsan_setup_watchpoint+0x3fb/0x440
[ 143.847350][ C1] trigger_dyntick_cpu.isra.0+0x6d/0xf0
[ 143.852879][ C1] mod_timer+0x50e/0x830
[ 143.857117][ C1] sk_reset_timer+0x29/0xc0
[ 143.861622][ C1] tcp_send_delayed_ack+0x1fd/0x280
[ 143.866810][ C1] __tcp_ack_snd_check+0x3bb/0x550
[ 143.871907][ C1] tcp_rcv_established+0xc95/0xee0
[ 143.877014][ C1] tcp_v4_do_rcv+0x396/0x4f0
[ 143.881617][ C1] tcp_v4_rcv+0x1bbf/0x1d80
[ 143.886164][ C1] ip_protocol_deliver_rcu+0x4b/0x410
[ 143.891527][ C1] ip_local_deliver_finish+0xf3/0x120
[ 143.896893][ C1] ip_local_deliver+0x135/0x220
[ 143.901750][ C1] ? ip_protocol_deliver_rcu+0x410/0x410
[ 143.907390][ C1] ip_sublist_rcv_finish+0xf0/0x140
[ 143.912595][ C1] ip_sublist_rcv+0x3f8/0x530
[ 143.917288][ C1] ? ip_sublist_rcv+0x530/0x530
[ 143.922138][ C1] ip_list_rcv+0x2f3/0x321
[ 143.926568][ C1] ? ip_rcv+0x1b0/0x1b0
[ 143.930846][ C1] __netif_receive_skb_list_core+0x368/0x5c0
[ 143.936829][ C1] ? ktime_get_with_offset+0x1e6/0x230
[ 143.942306][ C1] netif_receive_skb_list_internal+0x5c7/0x810
[ 143.948447][ C1] gro_normal_list.part.0+0x37/0xa0
[ 143.953626][ C1] ? __write_once_size+0x7c/0x100
[ 143.958640][ C1] gro_normal_one+0x14c/0x160
[ 143.963316][ C1] napi_gro_receive+0x27d/0x2f0
[ 143.968172][ C1] receive_buf+0x24e/0x2e20
[ 143.972678][ C1] ? virtqueue_get_buf_ctx+0x4db/0x5c0
[ 143.978129][ C1] virtnet_poll+0x343/0x790
[ 143.982621][ C1] ? rcu_dynticks_curr_cpu_in_eqs+0x70/0xa0
[ 143.988532][ C1] net_rx_action+0x3ad/0xac0
[ 143.993128][ C1] __do_softirq+0x118/0x34a
[ 143.997638][ C1] irq_exit+0xb5/0xd0
[ 144.001605][ C1] do_IRQ+0x7b/0x120
[ 144.005497][ C1] common_interrupt+0xf/0xf
[ 144.009978][ C1]
[ 144.012902][ C1] RIP: 0010:native_safe_halt+0xe/0x10
[ 144.018264][ C1] Code: ff cc cc cc cc cc cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d fc f8 43 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d ec f8 43 00 fb f4 cc 41 54 55 53 e8 37 fc 9a fc e8 12 ae b3 fd 0f 1f 44 00 00 48
[ 144.039508][ C1] RSP: 0018:ffffc90000cd3eb0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffffde
[ 144.047905][ C1] RAX: 0000000000000001 RBX: ffff88812b786040 RCX: ffffffff82522f51
[ 144.055865][ C1] RDX: 0000000000000000 RSI: ffffffff82522f5a RDI: 0000000000000005
[ 144.063829][ C1] RBP: 0000000000000001 R08: ffff88812b786040 R09: 0000ffff8584b168
[ 144.072091][ C1] R10: 0000c90000cd3e98 R11: 0000ffff8584b16f R12: ffff88812b786040
[ 144.080163][ C1] R13: 0000000000000000 R14: 0000000000000000 R15: ffff88812b786040
[ 144.088171][ C1] ? debug_smp_processor_id+0x31/0x129
[ 144.097324][ C1] ? debug_smp_processor_id+0x3a/0x129
[ 144.102796][ C1] default_idle+0x21/0x170
[ 144.107205][ C1] do_idle+0x1b7/0x290
[ 144.111260][ C1] ? do_idle+0xe0/0x290
[ 144.115419][ C1] cpu_startup_entry+0x14/0x20
[ 144.120168][ C1] start_secondary+0x164/0x1b0
[ 144.124914][ C1] secondary_startup_64+0xa4/0xb0
[ 144.131495][ C1] Kernel Offset: disabled
[ 144.136016][ C1] Rebooting in 86400 seconds..