Warning: Permanently added '10.128.0.67' (ECDSA) to the list of known hosts. 2020/06/16 13:30:03 fuzzer started 2020/06/16 13:30:04 dialing manager at 10.128.0.105:37643 2020/06/16 13:30:04 syscalls: 3085 2020/06/16 13:30:04 code coverage: enabled 2020/06/16 13:30:04 comparison tracing: enabled 2020/06/16 13:30:04 extra coverage: enabled 2020/06/16 13:30:04 setuid sandbox: enabled 2020/06/16 13:30:04 namespace sandbox: enabled 2020/06/16 13:30:04 Android sandbox: /sys/fs/selinux/policy does not exist 2020/06/16 13:30:04 fault injection: enabled 2020/06/16 13:30:04 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/06/16 13:30:04 net packet injection: enabled 2020/06/16 13:30:04 net device setup: enabled 2020/06/16 13:30:04 concurrency sanitizer: enabled 2020/06/16 13:30:04 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/06/16 13:30:04 USB emulation: enabled syzkaller login: [ 51.987264][ T8912] KCSAN: could not find function: 'poll_schedule_timeout' [ 55.295222][ T8912] KCSAN: could not find function: '_find_next_bit' 2020/06/16 13:30:08 suppressing KCSAN reports in functions: 'copy_process' 'blk_mq_dispatch_rq_list' 'ext4_free_inodes_count' 'do_syslog' 'poll_schedule_timeout' 'xas_clear_mark' 'ep_poll' 'complete_signal' 'generic_write_end' 'futex_wait_queue_me' 'pcpu_alloc' 'alloc_pid' '__send_signal' 'atime_needs_update' 'commit_echoes' 'generic_fillattr' '__ext4_new_inode' 'blk_mq_sched_dispatch_requests' 'do_nanosleep' 'find_get_pages_range_tag' 'decrypt_packet' 'run_timer_softirq' 'fasync_remove_entry' 'io_sq_thread' 'file_update_time' 'kauditd_thread' 'ktime_get_seconds' 'blk_mq_get_request' 'mod_timer' 'blk_mq_request_bypass_insert' 'generic_file_read_iter' '_find_next_bit' 'page_counter_charge' 'tick_sched_do_timer' [ 111.261342][ T0] ================================================================== [ 111.269446][ T0] BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_nohz_next_event [ 111.277998][ T0] [ 111.280327][ T0] write to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 1: [ 111.287677][ T0] tick_nohz_idle_stop_tick+0x52c/0x680 [ 111.293199][ T0] do_idle+0x1ad/0x290 [ 111.297248][ T0] cpu_startup_entry+0x14/0x20 [ 111.302002][ T0] start_secondary+0x169/0x1b0 [ 111.306802][ T0] secondary_startup_64+0xa4/0xb0 [ 111.311800][ T0] [ 111.314111][ T0] read to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 0: [ 111.321549][ T0] tick_nohz_next_event+0x181/0x340 [ 111.326725][ T0] tick_nohz_idle_stop_tick+0x3b9/0x680 [ 111.332255][ T0] do_idle+0x1ad/0x290 [ 111.336298][ T0] cpu_startup_entry+0x14/0x20 [ 111.341037][ T0] rest_init+0xe4/0xeb [ 111.345235][ T0] arch_call_rest_init+0x13/0x2b [ 111.350154][ T0] start_kernel+0x7fe/0x823 [ 111.354631][ T0] secondary_startup_64+0xa4/0xb0 [ 111.359619][ T0] [ 111.361918][ T0] Reported by Kernel Concurrency Sanitizer on: [ 111.368314][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0 [ 111.376181][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 111.386219][ T0] ================================================================== [ 111.394251][ T0] Kernel panic - not syncing: panic_on_warn set ... [ 111.401422][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0 [ 111.409281][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 111.419318][ T0] Call Trace: [ 111.422587][ T0] dump_stack+0x11d/0x187 [ 111.427156][ T0] panic+0x210/0x640 [ 111.431037][ T0] ? vprintk_func+0x89/0x13a [ 111.435604][ T0] kcsan_report.cold+0xc/0x1a [ 111.440274][ T0] kcsan_setup_watchpoint+0x3fb/0x440 [ 111.445715][ T0] tick_nohz_next_event+0x181/0x340 [ 111.450910][ T0] tick_nohz_idle_stop_tick+0x3b9/0x680 [ 111.456439][ T0] ? rcu_dynticks_eqs_exit+0x2c/0x60 [ 111.461726][ T0] ? debug_smp_processor_id+0x3f/0x129 [ 111.467180][ T0] do_idle+0x1ad/0x290 [ 111.471225][ T0] ? debug_smp_processor_id+0x3a/0x129 [ 111.476663][ T0] cpu_startup_entry+0x14/0x20 [ 111.481416][ T0] rest_init+0xe4/0xeb [ 111.485467][ T0] ? trace_init_perf_perm_irq_work_exit+0xe/0xe [ 111.491680][ T0] arch_call_rest_init+0x13/0x2b [ 111.496604][ T0] start_kernel+0x7fe/0x823 [ 111.501128][ T0] secondary_startup_64+0xa4/0xb0 [ 111.507512][ T0] Kernel Offset: disabled [ 111.511827][ T0] Rebooting in 86400 seconds..