Warning: Permanently added '10.128.0.220' (ECDSA) to the list of known hosts.
2020/04/17 22:23:45 fuzzer started
2020/04/17 22:23:47 dialing manager at 10.128.0.105:36643
2020/04/17 22:23:48 syscalls: 2960
2020/04/17 22:23:48 code coverage: enabled
2020/04/17 22:23:48 comparison tracing: enabled
2020/04/17 22:23:48 extra coverage: enabled
2020/04/17 22:23:48 setuid sandbox: enabled
2020/04/17 22:23:48 namespace sandbox: enabled
2020/04/17 22:23:48 Android sandbox: /sys/fs/selinux/policy does not exist
2020/04/17 22:23:48 fault injection: enabled
2020/04/17 22:23:48 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/04/17 22:23:48 net packet injection: enabled
2020/04/17 22:23:48 net device setup: enabled
2020/04/17 22:23:48 concurrency sanitizer: enabled
2020/04/17 22:23:48 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/04/17 22:23:48 USB emulation: /dev/raw-gadget does not exist
syzkaller login: [   45.920973][ T6699] KCSAN: could not find function: '_find_next_bit'
2020/04/17 22:23:50 adding functions to KCSAN blacklist: 'io_sq_thread' 'generic_write_end' 'add_timer' 'run_timer_softirq' 'xas_clear_mark' '_find_next_bit' 'generic_fillattr' 'echo_char' 'ext4_free_inodes_count' 'ep_poll' 'do_exit' 'copy_process' 'tick_nohz_idle_stop_tick' 'n_tty_receive_buf_common' 'shmem_add_to_page_cache' '__ext4_new_inode' 'blk_mq_get_request' 'page_counter_charge' 'do_nanosleep' 'pipe_double_lock' 'dd_has_work' 'find_get_pages_range_tag' 'mod_timer' 
[   54.035483][    T0] ==================================================================
[   54.043627][    T0] BUG: KCSAN: data-race in tick_nohz_next_event / tick_sched_do_timer
[   54.051763][    T0] 
[   54.054216][    T0] write to 0xffffffff85f0ef50 of 4 bytes by interrupt on cpu 1:
[   54.061860][    T0]  tick_sched_do_timer+0xb4/0xd0
[   54.066798][    T0]  tick_sched_timer+0x3f/0xd0
[   54.071619][    T0]  __hrtimer_run_queues+0x271/0x600
[   54.076881][    T0]  hrtimer_interrupt+0x226/0x490
[   54.081810][    T0]  smp_apic_timer_interrupt+0xd8/0x270
[   54.087270][    T0]  apic_timer_interrupt+0xf/0x20
[   54.092284][    T0]  __nf_ct_refresh_acct+0x39/0x1a0
[   54.097381][    T0]  nf_conntrack_tcp_packet+0xc63/0x2fe0
[   54.103014][    T0]  nf_conntrack_in+0x3fe/0xa60
[   54.107796][    T0]  ipv4_conntrack_in+0x23/0x40
[   54.112551][    T0]  nf_hook_slow+0x7c/0x160
[   54.116950][    T0]  nf_hook_slow_list+0x140/0x29f
[   54.121873][    T0]  ip_sublist_rcv+0x4f9/0x530
[   54.126557][    T0]  ip_list_rcv+0x2f3/0x321
[   54.130980][    T0]  __netif_receive_skb_list_core+0x368/0x5c0
[   54.136952][    T0]  netif_receive_skb_list_internal+0x5c7/0x810
[   54.143085][    T0]  gro_normal_list.part.0+0x37/0xa0
[   54.148280][    T0]  gro_normal_one+0x14c/0x160
[   54.152941][    T0]  napi_gro_receive+0x27d/0x2f0
[   54.157776][    T0]  receive_buf+0x252/0x2ed0
[   54.163230][    T0]  virtnet_poll+0x343/0x790
[   54.167716][    T0]  net_rx_action+0x3ad/0xac0
[   54.172289][    T0]  __do_softirq+0x118/0x34a
[   54.176788][    T0]  run_ksoftirqd+0x41/0x60
[   54.181201][    T0]  smpboot_thread_fn+0x374/0x4a0
[   54.186133][    T0]  kthread+0x203/0x230
[   54.190180][    T0]  ret_from_fork+0x1f/0x30
[   54.194586][    T0] 
[   54.196916][    T0] read to 0xffffffff85f0ef50 of 4 bytes by task 0 on cpu 0:
[   54.204330][    T0]  tick_nohz_next_event+0x181/0x340
[   54.209642][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[   54.215180][    T0]  do_idle+0x1ad/0x290
[   54.219227][    T0]  cpu_startup_entry+0x14/0x20
[   54.223980][    T0]  rest_init+0xe4/0xeb
[   54.228033][    T0]  arch_call_rest_init+0x13/0x2b
[   54.232958][    T0]  start_kernel+0x82d/0x852
[   54.237447][    T0]  secondary_startup_64+0xa4/0xb0
[   54.242457][    T0] 
[   54.244827][    T0] Reported by Kernel Concurrency Sanitizer on:
[   54.251088][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[   54.259228][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   54.269887][    T0] ==================================================================
[   54.277932][    T0] Kernel panic - not syncing: panic_on_warn set ...
[   54.284508][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0
[   54.292374][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   54.302937][    T0] Call Trace:
[   54.306209][    T0]  dump_stack+0x11d/0x187
[   54.310519][    T0]  panic+0x210/0x640
[   54.314394][    T0]  ? vprintk_func+0x89/0x13a
[   54.318967][    T0]  kcsan_report.cold+0xc/0x1a
[   54.323644][    T0]  kcsan_setup_watchpoint+0x3fb/0x440
[   54.328999][    T0]  tick_nohz_next_event+0x181/0x340
[   54.334176][    T0]  tick_nohz_idle_stop_tick+0x3b9/0x680
[   54.339708][    T0]  ? ktime_get+0x1c9/0x210
[   54.344109][    T0]  ? debug_smp_processor_id+0x3f/0x129
[   54.349732][    T0]  do_idle+0x1ad/0x290
[   54.353789][    T0]  ? debug_smp_processor_id+0x3f/0x129
[   54.359242][    T0]  cpu_startup_entry+0x14/0x20
[   54.364017][    T0]  rest_init+0xe4/0xeb
[   54.368071][    T0]  arch_call_rest_init+0x13/0x2b
[   54.372996][    T0]  start_kernel+0x82d/0x852
[   54.377486][    T0]  secondary_startup_64+0xa4/0xb0
[   54.384025][    T0] Kernel Offset: disabled
[   54.388351][    T0] Rebooting in 86400 seconds..