Warning: Permanently added '10.128.0.107' (ECDSA) to the list of known hosts. 2020/05/09 15:00:04 fuzzer started 2020/05/09 15:00:04 dialing manager at 10.128.0.105:40747 2020/05/09 15:00:16 syscalls: 3055 2020/05/09 15:00:16 code coverage: enabled 2020/05/09 15:00:16 comparison tracing: enabled 2020/05/09 15:00:16 extra coverage: enabled 2020/05/09 15:00:16 setuid sandbox: enabled 2020/05/09 15:00:16 namespace sandbox: enabled 2020/05/09 15:00:16 Android sandbox: /sys/fs/selinux/policy does not exist 2020/05/09 15:00:16 fault injection: enabled 2020/05/09 15:00:16 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/05/09 15:00:16 net packet injection: enabled 2020/05/09 15:00:16 net device setup: enabled 2020/05/09 15:00:16 concurrency sanitizer: enabled 2020/05/09 15:00:16 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/05/09 15:00:16 USB emulation: enabled [ 66.014531][ T8945] KCSAN: could not find function: '_find_next_bit' 2020/05/09 15:00:19 adding functions to KCSAN blacklist: 'generic_write_end' 'do_nanosleep' 'find_get_pages_range_tag' 'copy_process' 'blk_mq_dispatch_rq_list' '__mark_inode_dirty' 'do_signal_stop' 'page_counter_charge' 'ep_poll' 'kauditd_thread' 'futex_wait_queue_me' '_find_next_bit' 'xas_clear_mark' 'run_timer_softirq' 'ext4_free_inodes_count' '__filemap_fdatawrite_range' 'mod_timer' '__ext4_new_inode' 'blk_mq_get_request' [ 126.224804][ T0] ================================================================== [ 126.233852][ T0] BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_sched_do_timer [ 126.242328][ T0] [ 126.244658][ T0] write to 0xffffffff8764e210 of 4 bytes by interrupt on cpu 0: [ 126.252295][ T0] tick_sched_do_timer+0xb4/0xd0 [ 126.257255][ T0] tick_sched_timer+0x3f/0xd0 [ 126.261911][ T0] __hrtimer_run_queues+0x271/0x600 [ 126.267094][ T0] hrtimer_interrupt+0x226/0x490 [ 126.272012][ T0] smp_apic_timer_interrupt+0xd8/0x270 [ 126.277470][ T0] apic_timer_interrupt+0xf/0x20 [ 126.282834][ T0] [ 126.285182][ T0] read to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 1: [ 126.292477][ T0] tick_nohz_idle_stop_tick+0x191/0x680 [ 126.298141][ T0] do_idle+0x1ad/0x290 [ 126.302215][ T0] cpu_startup_entry+0x14/0x20 [ 126.307058][ T0] start_secondary+0x169/0x1b0 [ 126.311824][ T0] secondary_startup_64+0xa4/0xb0 [ 126.316833][ T0] [ 126.319137][ T0] Reported by Kernel Concurrency Sanitizer on: [ 126.325269][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0 [ 126.333316][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 126.343360][ T0] ================================================================== [ 126.351404][ T0] Kernel panic - not syncing: panic_on_warn set ... [ 126.357990][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0 [ 126.365867][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 126.375996][ T0] Call Trace: [ 126.379302][ T0] dump_stack+0x11d/0x187 [ 126.383625][ T0] panic+0x210/0x640 [ 126.387508][ T0] ? vprintk_func+0x89/0x13a [ 126.392090][ T0] kcsan_report.cold+0xc/0x1a [ 126.396761][ T0] kcsan_setup_watchpoint+0x3fb/0x440 [ 126.402134][ T0] tick_nohz_idle_stop_tick+0x191/0x680 [ 126.407675][ T0] do_idle+0x1ad/0x290 [ 126.411735][ T0] ? debug_smp_processor_id+0x3a/0x129 [ 126.417174][ T0] cpu_startup_entry+0x14/0x20 [ 126.421919][ T0] start_secondary+0x169/0x1b0 [ 126.426664][ T0] secondary_startup_64+0xa4/0xb0 [ 126.433102][ T0] Kernel Offset: disabled [ 126.437554][ T0] Rebooting in 86400 seconds..