Warning: Permanently added '10.128.1.13' (ECDSA) to the list of known hosts. 2020/05/15 12:41:42 fuzzer started 2020/05/15 12:41:42 dialing manager at 10.128.0.105:37863 2020/05/15 12:41:45 syscalls: 3055 2020/05/15 12:41:45 code coverage: enabled 2020/05/15 12:41:45 comparison tracing: enabled 2020/05/15 12:41:45 extra coverage: enabled 2020/05/15 12:41:45 setuid sandbox: enabled 2020/05/15 12:41:45 namespace sandbox: enabled 2020/05/15 12:41:45 Android sandbox: /sys/fs/selinux/policy does not exist 2020/05/15 12:41:45 fault injection: enabled 2020/05/15 12:41:45 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/05/15 12:41:45 net packet injection: enabled 2020/05/15 12:41:45 net device setup: enabled 2020/05/15 12:41:45 concurrency sanitizer: enabled 2020/05/15 12:41:45 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/05/15 12:41:45 USB emulation: enabled syzkaller login: [ 51.035803][ T8891] KCSAN: could not find function: 'poll_schedule_timeout' [ 51.650179][ T8891] KCSAN: could not find function: '_find_next_bit' 2020/05/15 12:41:48 adding functions to KCSAN blacklist: 'poll_schedule_timeout' '_find_next_bit' '__mpage_writepage' 'mod_timer' 'generic_write_end' 'xas_clear_mark' 'shmem_file_read_iter' 'copy_process' 'do_nanosleep' 'find_get_pages_range_tag' 'page_counter_charge' 'wbt_done' '__ext4_new_inode' 'do_signal_stop' 'ep_poll' 'pcpu_alloc' [ 53.834383][ T0] ================================================================== [ 53.842641][ T0] BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_sched_do_timer [ 53.851716][ T0] [ 53.854038][ T0] write to 0xffffffff8764e210 of 4 bytes by interrupt on cpu 0: [ 53.861837][ T0] tick_sched_do_timer+0xb4/0xd0 [ 53.866767][ T0] tick_sched_timer+0x3f/0xd0 [ 53.871656][ T0] __hrtimer_run_queues+0x271/0x600 [ 53.878779][ T0] hrtimer_interrupt+0x226/0x490 [ 53.884411][ T0] smp_apic_timer_interrupt+0xd8/0x270 [ 53.890462][ T0] apic_timer_interrupt+0xf/0x20 [ 53.896251][ T0] netif_receive_skb_list_internal+0xdd/0x810 [ 53.903990][ T0] gro_normal_list.part.0+0x37/0xa0 [ 53.909522][ T0] gro_normal_one+0x14c/0x160 [ 53.915868][ T0] napi_gro_receive+0x27d/0x2f0 [ 53.922364][ T0] receive_buf+0x24c/0x3420 [ 53.928210][ T0] virtnet_poll+0x343/0x790 [ 53.933773][ T0] net_rx_action+0x3ad/0xac0 [ 53.938717][ T0] __do_softirq+0x118/0x34a [ 53.943637][ T0] run_ksoftirqd+0x41/0x60 [ 53.948251][ T0] smpboot_thread_fn+0x374/0x4a0 [ 53.953577][ T0] kthread+0x203/0x230 [ 53.957983][ T0] ret_from_fork+0x1f/0x30 [ 53.962958][ T0] [ 53.965372][ T0] read to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 1: [ 53.973653][ T0] tick_nohz_idle_stop_tick+0x191/0x680 [ 53.979842][ T0] do_idle+0x1ad/0x290 [ 53.984361][ T0] cpu_startup_entry+0x14/0x20 [ 53.990093][ T0] start_secondary+0x169/0x1b0 [ 53.995457][ T0] secondary_startup_64+0xa4/0xb0 [ 54.001130][ T0] [ 54.003447][ T0] Reported by Kernel Concurrency Sanitizer on: [ 54.010156][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0 [ 54.019060][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.029458][ T0] ================================================================== [ 54.039642][ T0] Kernel panic - not syncing: panic_on_warn set ... [ 54.046983][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0 [ 54.055592][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.066853][ T0] Call Trace: [ 54.070411][ T0] dump_stack+0x11d/0x187 [ 54.074733][ T0] panic+0x210/0x640 [ 54.079415][ T0] ? vprintk_func+0x89/0x13a [ 54.084225][ T0] kcsan_report.cold+0xc/0x1a [ 54.089243][ T0] kcsan_setup_watchpoint+0x3fb/0x440 [ 54.094808][ T0] tick_nohz_idle_stop_tick+0x191/0x680 [ 54.101955][ T0] do_idle+0x1ad/0x290 [ 54.106395][ T0] ? debug_smp_processor_id+0x3a/0x129 [ 54.112244][ T0] cpu_startup_entry+0x14/0x20 [ 54.117087][ T0] start_secondary+0x169/0x1b0 [ 54.123104][ T0] secondary_startup_64+0xa4/0xb0 [ 54.131123][ T0] Kernel Offset: disabled [ 54.136027][ T0] Rebooting in 86400 seconds..