Warning: Permanently added '10.128.0.117' (ECDSA) to the list of known hosts. 2020/06/14 18:41:22 fuzzer started 2020/06/14 18:41:22 dialing manager at 10.128.0.105:36539 2020/06/14 18:41:22 syscalls: 3085 2020/06/14 18:41:22 code coverage: enabled 2020/06/14 18:41:22 comparison tracing: enabled 2020/06/14 18:41:22 extra coverage: enabled 2020/06/14 18:41:22 setuid sandbox: enabled 2020/06/14 18:41:22 namespace sandbox: enabled 2020/06/14 18:41:22 Android sandbox: /sys/fs/selinux/policy does not exist 2020/06/14 18:41:22 fault injection: enabled 2020/06/14 18:41:22 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/06/14 18:41:22 net packet injection: enabled 2020/06/14 18:41:22 net device setup: enabled 2020/06/14 18:41:22 concurrency sanitizer: enabled 2020/06/14 18:41:22 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/06/14 18:41:22 USB emulation: enabled [ 52.144436][ T8923] KCSAN: could not find function: '_find_next_bit' 2020/06/14 18:41:28 adding functions to KCSAN blacklist: '__ext4_new_inode' 'generic_file_read_iter' 'file_update_time' 'tick_sched_do_timer' 'blk_mq_dispatch_rq_list' 'blk_mq_get_request' 'ep_poll' 'ext4_mb_good_group' 'generic_write_end' 'blk_mq_request_bypass_insert' 'decrypt_packet' 'lookup_fast' 'kcm_rfree' 'find_get_pages_range_tag' 'tick_nohz_idle_stop_tick' 'futex_wait_queue_me' 'xas_clear_mark' 'mod_timer' 'run_timer_softirq' 'page_counter_charge' 'pcpu_alloc' '__filemap_fdatawrite_range' 'vm_area_dup' 'do_exit' 'fsnotify' '__delete_from_page_cache' '__send_signal' 'copy_process' 'do_nanosleep' 'audit_log_start' '__snd_rawmidi_transmit_ack' 'blk_mq_sched_dispatch_requests' 'n_tty_receive_buf_common' 'xas_find_marked' 'ext4_mark_iloc_dirty' 'ext4_writepages' 'kauditd_thread' '__x64_sys_ptrace' 'ext4_free_inodes_count' 'add_timer' '_find_next_bit' 'do_signal_stop' 'wbt_done' 'generic_fillattr' 'atime_needs_update' 'ptrace_check_attach' [ 106.926948][ C0] ================================================================== [ 106.935089][ C0] BUG: KCSAN: data-race in timer_clear_idle / trigger_dyntick_cpu.isra.0 [ 106.943482][ C0] [ 106.945788][ C0] write to 0xffff88812c11dca4 of 1 bytes by task 0 on cpu 1: [ 106.953134][ C0] timer_clear_idle+0x3d/0x50 [ 106.957782][ C0] __tick_nohz_idle_restart_tick+0x32/0x1a0 [ 106.963645][ C0] tick_nohz_idle_exit+0x19c/0x1d0 [ 106.968724][ C0] do_idle+0xac/0x290 [ 106.972677][ C0] cpu_startup_entry+0x14/0x20 [ 106.977440][ C0] start_secondary+0x169/0x1b0 [ 106.982175][ C0] secondary_startup_64+0xa4/0xb0 [ 106.987163][ C0] [ 106.989465][ C0] read to 0xffff88812c11dca4 of 1 bytes by interrupt on cpu 0: [ 106.996998][ C0] trigger_dyntick_cpu.isra.0+0x6d/0xf0 [ 107.002535][ C0] mod_timer+0x50e/0x830 [ 107.006753][ C0] sk_reset_timer+0x29/0xc0 [ 107.011230][ C0] tcp_send_delayed_ack+0x1fd/0x280 [ 107.016402][ C0] __tcp_ack_snd_check+0x3bb/0x550 [ 107.021502][ C0] tcp_rcv_established+0x72b/0xee0 [ 107.026591][ C0] tcp_v4_do_rcv+0x396/0x4f0 [ 107.031166][ C0] tcp_v4_rcv+0x1c55/0x1e10 [ 107.035671][ C0] ip_protocol_deliver_rcu+0x4b/0x410 [ 107.041016][ C0] ip_local_deliver_finish+0xf3/0x120 [ 107.046376][ C0] ip_local_deliver+0x135/0x220 [ 107.051200][ C0] ip_sublist_rcv_finish+0xf0/0x140 [ 107.056386][ C0] ip_sublist_rcv+0x3f8/0x530 [ 107.061049][ C0] ip_list_rcv+0x2f3/0x321 [ 107.065453][ C0] __netif_receive_skb_list_core+0x368/0x5c0 [ 107.071418][ C0] netif_receive_skb_list_internal+0x5c7/0x810 [ 107.077540][ C0] gro_normal_list.part.0+0x37/0xa0 [ 107.082732][ C0] gro_normal_one+0x14c/0x160 [ 107.087380][ C0] napi_gro_receive+0x27d/0x2f0 [ 107.092201][ C0] receive_buf+0x24c/0x3420 [ 107.096684][ C0] virtnet_poll+0x343/0x790 [ 107.101174][ C0] net_rx_action+0x3ad/0xac0 [ 107.105741][ C0] __do_softirq+0x118/0x34a [ 107.110218][ C0] irq_exit+0xb5/0xd0 [ 107.114183][ C0] do_IRQ+0x7b/0x120 [ 107.118053][ C0] ret_from_intr+0x0/0x21 [ 107.122367][ C0] native_safe_halt+0xe/0x10 [ 107.126928][ C0] default_idle+0x21/0x170 [ 107.131333][ C0] do_idle+0x1b7/0x290 [ 107.135378][ C0] cpu_startup_entry+0x14/0x20 [ 107.140115][ C0] rest_init+0xe4/0xeb [ 107.144165][ C0] arch_call_rest_init+0x13/0x2b [ 107.149069][ C0] start_kernel+0x7fe/0x823 [ 107.153551][ C0] secondary_startup_64+0xa4/0xb0 [ 107.158547][ C0] [ 107.160842][ C0] Reported by Kernel Concurrency Sanitizer on: [ 107.166984][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0 [ 107.174845][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 107.184878][ C0] ================================================================== [ 107.192909][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 107.199468][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0 [ 107.207322][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 107.217346][ C0] Call Trace: [ 107.220622][ C0] [ 107.223462][ C0] dump_stack+0x11d/0x187 [ 107.227851][ C0] panic+0x210/0x640 [ 107.231755][ C0] ? vprintk_func+0x89/0x13a [ 107.236321][ C0] kcsan_report.cold+0xc/0x1a [ 107.240988][ C0] kcsan_setup_watchpoint+0x3fb/0x440 [ 107.246351][ C0] trigger_dyntick_cpu.isra.0+0x6d/0xf0 [ 107.251895][ C0] mod_timer+0x50e/0x830 [ 107.256122][ C0] sk_reset_timer+0x29/0xc0 [ 107.260619][ C0] tcp_send_delayed_ack+0x1fd/0x280 [ 107.265805][ C0] __tcp_ack_snd_check+0x3bb/0x550 [ 107.270893][ C0] ? constant_test_bit+0xd/0x30 [ 107.275720][ C0] tcp_rcv_established+0x72b/0xee0 [ 107.280806][ C0] tcp_v4_do_rcv+0x396/0x4f0 [ 107.285388][ C0] tcp_v4_rcv+0x1c55/0x1e10 [ 107.289893][ C0] ip_protocol_deliver_rcu+0x4b/0x410 [ 107.295255][ C0] ip_local_deliver_finish+0xf3/0x120 [ 107.300612][ C0] ip_local_deliver+0x135/0x220 [ 107.305438][ C0] ? ip_protocol_deliver_rcu+0x410/0x410 [ 107.311055][ C0] ip_sublist_rcv_finish+0xf0/0x140 [ 107.316239][ C0] ip_sublist_rcv+0x3f8/0x530 [ 107.320893][ C0] ? ip_sublist_rcv+0x530/0x530 [ 107.325734][ C0] ip_list_rcv+0x2f3/0x321 [ 107.330137][ C0] ? ip_rcv+0x1b0/0x1b0 [ 107.334265][ C0] __netif_receive_skb_list_core+0x368/0x5c0 [ 107.340241][ C0] ? ktime_get_with_offset+0x1e6/0x230 [ 107.345679][ C0] netif_receive_skb_list_internal+0x5c7/0x810 [ 107.351969][ C0] gro_normal_list.part.0+0x37/0xa0 [ 107.357275][ C0] ? __write_once_size+0x7c/0x100 [ 107.362378][ C0] gro_normal_one+0x14c/0x160 [ 107.367057][ C0] napi_gro_receive+0x27d/0x2f0 [ 107.371975][ C0] receive_buf+0x24c/0x3420 [ 107.376563][ C0] ? virtqueue_get_buf_ctx+0x4db/0x5c0 [ 107.382020][ C0] virtnet_poll+0x343/0x790 [ 107.386506][ C0] ? rcu_dynticks_curr_cpu_in_eqs+0x70/0xa0 [ 107.392485][ C0] net_rx_action+0x3ad/0xac0 [ 107.397063][ C0] __do_softirq+0x118/0x34a [ 107.401544][ C0] irq_exit+0xb5/0xd0 [ 107.405526][ C0] do_IRQ+0x7b/0x120 [ 107.409406][ C0] common_interrupt+0xf/0xf [ 107.413883][ C0] [ 107.416804][ C0] RIP: 0010:native_safe_halt+0xe/0x10 [ 107.422171][ C0] Code: ff cc cc cc cc cc cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d 0c d6 58 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d fc d5 58 00 fb f4 cc 41 54 55 53 e8 97 b2 71 fb e8 a2 21 bc fc 0f 1f 44 00 00 48 [ 107.441857][ C0] RSP: 0018:ffffffff87203e70 EFLAGS: 00000286 ORIG_RAX: ffffffffffffffda [ 107.450246][ C0] RAX: 0000000000000000 RBX: ffffffff8722b840 RCX: ffffffff8285fdf1 [ 107.458309][ C0] RDX: 0000000000000000 RSI: ffffffff8285fdfa RDI: 0000000000000005 [ 107.466279][ C0] RBP: 0000000000000000 R08: ffffffff8722b840 R09: 0000ffff87047920 [ 107.474256][ C0] R10: 0000ffff87203e58 R11: 0000ffff87047927 R12: ffffffff8722b840 [ 107.482291][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: ffffffff8722b840 [ 107.490252][ C0] ? debug_smp_processor_id+0x31/0x129 [ 107.495685][ C0] ? debug_smp_processor_id+0x3a/0x129 [ 107.501133][ C0] default_idle+0x21/0x170 [ 107.505540][ C0] do_idle+0x1b7/0x290 [ 107.509588][ C0] ? debug_smp_processor_id+0x3a/0x129 [ 107.515041][ C0] cpu_startup_entry+0x14/0x20 [ 107.519801][ C0] rest_init+0xe4/0xeb [ 107.523842][ C0] ? trace_init_perf_perm_irq_work_exit+0xe/0xe [ 107.530059][ C0] arch_call_rest_init+0x13/0x2b [ 107.534984][ C0] start_kernel+0x7fe/0x823 [ 107.539466][ C0] secondary_startup_64+0xa4/0xb0 [ 107.545741][ C0] Kernel Offset: disabled [ 107.550180][ C0] Rebooting in 86400 seconds..