Warning: Permanently added '10.128.0.41' (ECDSA) to the list of known hosts. 2020/05/07 10:19:07 fuzzer started 2020/05/07 10:19:07 dialing manager at 10.128.0.105:43951 2020/05/07 10:19:11 syscalls: 2965 2020/05/07 10:19:11 code coverage: enabled 2020/05/07 10:19:11 comparison tracing: enabled 2020/05/07 10:19:11 extra coverage: enabled 2020/05/07 10:19:11 setuid sandbox: enabled 2020/05/07 10:19:11 namespace sandbox: enabled 2020/05/07 10:19:11 Android sandbox: /sys/fs/selinux/policy does not exist 2020/05/07 10:19:11 fault injection: enabled 2020/05/07 10:19:11 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/05/07 10:19:11 net packet injection: enabled 2020/05/07 10:19:11 net device setup: enabled 2020/05/07 10:19:11 concurrency sanitizer: enabled 2020/05/07 10:19:11 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/05/07 10:19:11 USB emulation: /dev/raw-gadget does not exist syzkaller login: [ 46.820017][ T6728] KCSAN: could not find function: 'poll_schedule_timeout' [ 47.304168][ T6728] KCSAN: could not find function: '_find_next_bit' 2020/05/07 10:19:13 adding functions to KCSAN blacklist: 'generic_write_end' 'copy_process' 'ep_poll' 'find_get_pages_range_tag' 'mod_timer' 'dd_has_work' 'poll_schedule_timeout' '_find_next_bit' 'atime_needs_update' '__ext4_new_inode' 'run_timer_softirq' [ 74.820505][ T0] ================================================================== [ 74.828717][ T0] BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_nohz_next_event [ 74.837992][ T0] [ 74.840331][ T0] write to 0xffffffff85f0ef50 of 4 bytes by task 0 on cpu 1: [ 74.847789][ T0] tick_nohz_idle_stop_tick+0x52c/0x680 [ 74.853339][ T0] do_idle+0x1ad/0x290 [ 74.857497][ T0] cpu_startup_entry+0x14/0x20 [ 74.862275][ T0] start_secondary+0x169/0x1b0 [ 74.867042][ T0] secondary_startup_64+0xa4/0xb0 [ 74.872056][ T0] [ 74.874393][ T0] read to 0xffffffff85f0ef50 of 4 bytes by task 0 on cpu 0: [ 74.883535][ T0] tick_nohz_next_event+0x181/0x340 [ 74.888868][ T0] tick_nohz_idle_stop_tick+0x3b9/0x680 [ 74.894398][ T0] do_idle+0x1ad/0x290 [ 74.898449][ T0] cpu_startup_entry+0x14/0x20 [ 74.903357][ T0] rest_init+0xe4/0xeb [ 74.907544][ T0] arch_call_rest_init+0x13/0x2b [ 74.912480][ T0] start_kernel+0x82d/0x852 [ 74.916996][ T0] secondary_startup_64+0xa4/0xb0 [ 74.922119][ T0] [ 74.924429][ T0] Reported by Kernel Concurrency Sanitizer on: [ 74.930628][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0 [ 74.938672][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.948837][ T0] ================================================================== [ 74.956883][ T0] Kernel panic - not syncing: panic_on_warn set ... [ 74.963705][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc1-syzkaller #0 [ 74.971573][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.981649][ T0] Call Trace: [ 74.984946][ T0] dump_stack+0x11d/0x187 [ 74.989313][ T0] panic+0x210/0x640 [ 74.993197][ T0] ? vprintk_func+0x89/0x13a [ 74.997807][ T0] kcsan_report.cold+0xc/0x1a [ 75.002474][ T0] kcsan_setup_watchpoint+0x3fb/0x440 [ 75.007930][ T0] tick_nohz_next_event+0x181/0x340 [ 75.013151][ T0] tick_nohz_idle_stop_tick+0x3b9/0x680 [ 75.018684][ T0] ? rcu_dynticks_eqs_exit+0x2c/0x60 [ 75.023958][ T0] ? debug_smp_processor_id+0x3f/0x129 [ 75.029425][ T0] do_idle+0x1ad/0x290 [ 75.033510][ T0] ? debug_smp_processor_id+0x3f/0x129 [ 75.038953][ T0] cpu_startup_entry+0x14/0x20 [ 75.043705][ T0] rest_init+0xe4/0xeb [ 75.047800][ T0] arch_call_rest_init+0x13/0x2b [ 75.052777][ T0] start_kernel+0x82d/0x852 [ 75.057274][ T0] secondary_startup_64+0xa4/0xb0 [ 75.063994][ T0] Kernel Offset: disabled [ 75.068318][ T0] Rebooting in 86400 seconds..