Warning: Permanently added '10.128.0.238' (ECDSA) to the list of known hosts. 2020/05/08 11:38:40 fuzzer started 2020/05/08 11:38:40 dialing manager at 10.128.0.105:46419 2020/05/08 11:38:46 syscalls: 3055 2020/05/08 11:38:46 code coverage: enabled 2020/05/08 11:38:46 comparison tracing: enabled 2020/05/08 11:38:46 extra coverage: enabled 2020/05/08 11:38:46 setuid sandbox: enabled 2020/05/08 11:38:46 namespace sandbox: enabled 2020/05/08 11:38:46 Android sandbox: /sys/fs/selinux/policy does not exist 2020/05/08 11:38:46 fault injection: enabled 2020/05/08 11:38:46 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/05/08 11:38:46 net packet injection: enabled 2020/05/08 11:38:46 net device setup: enabled 2020/05/08 11:38:46 concurrency sanitizer: enabled 2020/05/08 11:38:46 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/05/08 11:38:46 USB emulation: enabled [ 59.081684][ T8919] KCSAN: could not find function: '_find_next_bit' 2020/05/08 11:38:49 adding functions to KCSAN blacklist: 'find_get_pages_range_tag' 'run_timer_softirq' '__ext4_new_inode' '_find_next_bit' 'futex_wait_queue_me' 'generic_write_end' 'ep_poll' 'blk_mq_dispatch_rq_list' 'do_nanosleep' 'shmem_file_read_iter' 'ext4_mark_iloc_dirty' '__add_to_page_cache_locked' 'do_syslog' 'page_counter_charge' 'add_timer' 'xas_clear_mark' 'mod_timer' 'pcpu_alloc' 'do_exit' 'blk_mq_sched_dispatch_requests' 'copy_process' 'ext4_free_inodes_count' 'generic_fillattr' [ 66.200623][ T0] ================================================================== [ 66.208776][ T0] BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_nohz_idle_stop_tick [ 66.217732][ T0] [ 66.220060][ T0] write to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 0: [ 66.227423][ T0] tick_nohz_idle_stop_tick+0x52c/0x680 [ 66.232947][ T0] do_idle+0x1ad/0x290 [ 66.237001][ T0] cpu_startup_entry+0x14/0x20 [ 66.241746][ T0] rest_init+0xe4/0xeb [ 66.245799][ T0] arch_call_rest_init+0x13/0x2b [ 66.250714][ T0] start_kernel+0x7fe/0x823 [ 66.255192][ T0] secondary_startup_64+0xa4/0xb0 [ 66.260184][ T0] [ 66.262592][ T0] read to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 1: [ 66.269867][ T0] tick_nohz_idle_stop_tick+0x191/0x680 [ 66.275404][ T0] do_idle+0x1ad/0x290 [ 66.279480][ T0] cpu_startup_entry+0x14/0x20 [ 66.284238][ T0] start_secondary+0x169/0x1b0 [ 66.288989][ T0] secondary_startup_64+0xa4/0xb0 [ 66.293983][ T0] [ 66.296286][ T0] Reported by Kernel Concurrency Sanitizer on: [ 66.302417][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0 [ 66.310724][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.320757][ T0] ================================================================== [ 66.328793][ T0] Kernel panic - not syncing: panic_on_warn set ... [ 66.335792][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0 [ 66.343654][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.353693][ T0] Call Trace: [ 66.356961][ T0] dump_stack+0x11d/0x187 [ 66.361335][ T0] panic+0x210/0x640 [ 66.365228][ T0] ? vprintk_func+0x89/0x13a [ 66.369798][ T0] kcsan_report.cold+0xc/0x1a [ 66.374458][ T0] kcsan_setup_watchpoint+0x3fb/0x440 [ 66.379814][ T0] tick_nohz_idle_stop_tick+0x191/0x680 [ 66.385343][ T0] do_idle+0x1ad/0x290 [ 66.389389][ T0] ? debug_smp_processor_id+0x3a/0x129 [ 66.394837][ T0] cpu_startup_entry+0x14/0x20 [ 66.399580][ T0] start_secondary+0x169/0x1b0 [ 66.404384][ T0] secondary_startup_64+0xa4/0xb0 [ 66.411406][ T0] Kernel Offset: disabled [ 66.415743][ T0] Rebooting in 86400 seconds..