Warning: Permanently added '10.128.0.130' (ECDSA) to the list of known hosts. 2020/05/25 01:08:01 fuzzer started 2020/05/25 01:08:01 dialing manager at 10.128.0.105:37929 2020/05/25 01:08:01 syscalls: 3055 2020/05/25 01:08:01 code coverage: enabled 2020/05/25 01:08:01 comparison tracing: enabled 2020/05/25 01:08:01 extra coverage: enabled 2020/05/25 01:08:01 setuid sandbox: enabled 2020/05/25 01:08:01 namespace sandbox: enabled 2020/05/25 01:08:01 Android sandbox: /sys/fs/selinux/policy does not exist 2020/05/25 01:08:01 fault injection: enabled 2020/05/25 01:08:01 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/05/25 01:08:01 net packet injection: enabled 2020/05/25 01:08:01 net device setup: enabled 2020/05/25 01:08:01 concurrency sanitizer: enabled 2020/05/25 01:08:01 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/05/25 01:08:01 USB emulation: enabled syzkaller login: [ 49.803385][ T8924] KCSAN: could not find function: '_find_next_bit' 2020/05/25 01:08:03 adding functions to KCSAN blacklist: 'blk_mq_sched_dispatch_requests' 'generic_write_end' 'atime_needs_update' '__ext4_new_inode' 'run_timer_softirq' 'find_get_pages_range_tag' 'io_sq_thread' '_find_next_bit' 'xas_clear_mark' '__snd_rawmidi_transmit_ack' 'ep_poll' 'dd_has_work' 'blk_mq_get_request' 'generic_fillattr' [ 82.210001][ T0] ================================================================== [ 82.218164][ T0] BUG: KCSAN: data-race in tick_nohz_next_event / tick_sched_do_timer [ 82.226290][ T0] [ 82.228601][ T0] write to 0xffffffff8764e210 of 4 bytes by interrupt on cpu 0: [ 82.236215][ T0] tick_sched_do_timer+0xb4/0xd0 [ 82.241139][ T0] tick_sched_timer+0x3f/0xd0 [ 82.245806][ T0] __hrtimer_run_queues+0x271/0x600 [ 82.251015][ T0] hrtimer_interrupt+0x226/0x490 [ 82.255970][ T0] smp_apic_timer_interrupt+0xd8/0x270 [ 82.261439][ T0] apic_timer_interrupt+0xf/0x20 [ 82.266397][ T0] native_safe_halt+0xe/0x10 [ 82.270976][ T0] default_idle+0x21/0x170 [ 82.275417][ T0] do_idle+0x1b7/0x290 [ 82.279488][ T0] cpu_startup_entry+0x14/0x20 [ 82.284237][ T0] rest_init+0xe4/0xeb [ 82.288294][ T0] arch_call_rest_init+0x13/0x2b [ 82.293239][ T0] start_kernel+0x7fe/0x823 [ 82.297735][ T0] secondary_startup_64+0xa4/0xb0 [ 82.302754][ T0] [ 82.305081][ T0] read to 0xffffffff8764e210 of 4 bytes by task 0 on cpu 1: [ 82.312378][ T0] tick_nohz_next_event+0x181/0x340 [ 82.317583][ T0] tick_nohz_idle_stop_tick+0x3b9/0x680 [ 82.323129][ T0] do_idle+0x1ad/0x290 [ 82.327178][ T0] cpu_startup_entry+0x14/0x20 [ 82.331921][ T0] start_secondary+0x169/0x1b0 [ 82.336666][ T0] secondary_startup_64+0xa4/0xb0 [ 82.341687][ T0] [ 82.344002][ T0] Reported by Kernel Concurrency Sanitizer on: [ 82.350140][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0 [ 82.358012][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.368049][ T0] ================================================================== [ 82.376094][ T0] Kernel panic - not syncing: panic_on_warn set ... [ 82.382668][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.7.0-rc1-syzkaller #0 [ 82.390535][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.400590][ T0] Call Trace: [ 82.403869][ T0] dump_stack+0x11d/0x187 [ 82.408203][ T0] panic+0x210/0x640 [ 82.412107][ T0] ? vprintk_func+0x89/0x13a [ 82.416689][ T0] kcsan_report.cold+0xc/0x1a [ 82.421348][ T0] kcsan_setup_watchpoint+0x3fb/0x440 [ 82.426715][ T0] tick_nohz_next_event+0x181/0x340 [ 82.432003][ T0] tick_nohz_idle_stop_tick+0x3b9/0x680 [ 82.437549][ T0] ? rcu_dynticks_eqs_exit+0x2c/0x60 [ 82.442851][ T0] ? debug_smp_processor_id+0x3f/0x129 [ 82.448334][ T0] do_idle+0x1ad/0x290 [ 82.452421][ T0] cpu_startup_entry+0x14/0x20 [ 82.457199][ T0] start_secondary+0x169/0x1b0 [ 82.461947][ T0] secondary_startup_64+0xa4/0xb0 [ 82.468284][ T0] Kernel Offset: disabled [ 82.472600][ T0] Rebooting in 86400 seconds..