Warning: Permanently added '10.128.0.133' (ECDSA) to the list of known hosts. 2020/05/01 15:17:58 fuzzer started 2020/05/01 15:17:59 dialing manager at 10.128.0.105:38857 2020/05/01 15:17:59 syscalls: 2964 2020/05/01 15:17:59 code coverage: enabled 2020/05/01 15:17:59 comparison tracing: enabled 2020/05/01 15:17:59 extra coverage: enabled 2020/05/01 15:17:59 setuid sandbox: enabled 2020/05/01 15:17:59 namespace sandbox: enabled 2020/05/01 15:17:59 Android sandbox: /sys/fs/selinux/policy does not exist 2020/05/01 15:17:59 fault injection: enabled 2020/05/01 15:17:59 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/05/01 15:17:59 net packet injection: enabled 2020/05/01 15:17:59 net device setup: enabled 2020/05/01 15:17:59 concurrency sanitizer: enabled 2020/05/01 15:17:59 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/05/01 15:17:59 USB emulation: /dev/raw-gadget does not exist syzkaller login: [ 45.643717][ T6705] KCSAN: could not find function: '_find_next_bit' 2020/05/01 15:18:03 adding functions to KCSAN blacklist: 'page_counter_charge' 'tick_nohz_idle_stop_tick' 'echo_char' '_find_next_bit' 'do_nanosleep' 'ep_poll' 'futex_wait_queue_me' 'xas_clear_mark' 'pipe_double_lock' 'ext4_free_inodes_count' '__delete_from_page_cache' 'blk_mq_request_bypass_insert' 'blk_mq_get_request' 'find_get_pages_range_tag' 'blk_mq_dispatch_rq_list' 'wbt_done' '__dentry_kill' 'dd_has_work' 'generic_update_time' 'atime_needs_update' 'run_timer_softirq' 'kcm_rfree' 'add_timer' '__add_to_page_cache_locked' 'xas_find_marked' '__ext4_new_inode' 'generic_write_end' 'copy_process' 'tick_sched_do_timer' 'mod_timer' 'ext4_mark_iloc_dirty' 'generic_fillattr' 'blk_mq_sched_dispatch_requests' '__filemap_fdatawrite_range' 'kauditd_thread' 'wbt_issue' 'pcpu_alloc' 'alloc_pid' 'audit_log_start' [ 68.853437][ C0] ================================================================== [ 68.861547][ C0] BUG: KCSAN: data-race in timer_clear_idle / trigger_dyntick_cpu.isra.0 [ 68.870222][ C0] [ 68.872557][ C0] write to 0xffff88812c11dca4 of 1 bytes by task 0 on cpu 1: [ 68.879898][ C0] timer_clear_idle+0x3d/0x50 [ 68.884559][ C0] __tick_nohz_idle_restart_tick+0x32/0x1a0 [ 68.890442][ C0] tick_nohz_idle_exit+0x19c/0x1d0 [ 68.895532][ C0] do_idle+0xac/0x290 [ 68.899496][ C0] cpu_startup_entry+0x14/0x20 [ 68.904238][ C0] start_secondary+0x169/0x1b0 [ 68.908973][ C0] secondary_startup_64+0xa4/0xb0 [ 68.913959][ C0] [ 68.916260][ C0] read to 0xffff88812c11dca4 of 1 bytes by interrupt on cpu 0: [ 68.923784][ C0] trigger_dyntick_cpu.isra.0+0x6d/0xf0 [ 68.929310][ C0] add_timer_on+0x192/0x2c0 [ 68.933794][ C0] clocksource_watchdog+0x699/0x7c0 [ 68.938961][ C0] call_timer_fn+0x58/0x2e0 [ 68.943470][ C0] run_timer_softirq+0xb14/0xbd0 [ 68.949693][ C0] __do_softirq+0x118/0x34a [ 68.954169][ C0] run_ksoftirqd+0x41/0x60 [ 68.958564][ C0] smpboot_thread_fn+0x374/0x4a0 [ 68.963507][ C0] kthread+0x203/0x230 [ 68.967576][ C0] ret_from_fork+0x1f/0x30 [ 68.971968][ C0] [ 68.974278][ C0] Reported by Kernel Concurrency Sanitizer on: [ 68.980412][ C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.7.0-rc1-syzkaller #0 [ 68.988444][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.998473][ C0] ================================================================== [ 69.006517][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 69.013087][ C0] CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.7.0-rc1-syzkaller #0 [ 69.021129][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.031170][ C0] Call Trace: [ 69.034439][ C0] dump_stack+0x11d/0x187 [ 69.038742][ C0] panic+0x210/0x640 [ 69.042613][ C0] ? vprintk_func+0x89/0x13a [ 69.047184][ C0] kcsan_report.cold+0xc/0x1a [ 69.053931][ C0] kcsan_setup_watchpoint+0x3fb/0x440 [ 69.059285][ C0] trigger_dyntick_cpu.isra.0+0x6d/0xf0 [ 69.064814][ C0] add_timer_on+0x192/0x2c0 [ 69.069295][ C0] clocksource_watchdog+0x699/0x7c0 [ 69.074471][ C0] ? clocksource_select_watchdog+0x410/0x410 [ 69.080435][ C0] ? clocksource_select_watchdog+0x410/0x410 [ 69.086385][ C0] call_timer_fn+0x58/0x2e0 [ 69.091134][ C0] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 69.097002][ C0] ? clocksource_select_watchdog+0x410/0x410 [ 69.103048][ C0] run_timer_softirq+0xb14/0xbd0 [ 69.107983][ C0] ? kvm_clock_read+0x14/0x30 [ 69.112630][ C0] ? kvm_sched_clock_read+0x5/0x10 [ 69.117724][ C0] ? sched_clock+0xf/0x20 [ 69.122029][ C0] ? sched_clock_cpu+0x10/0xd0 [ 69.126778][ C0] __do_softirq+0x118/0x34a [ 69.131257][ C0] ? takeover_tasklets+0x240/0x240 [ 69.136342][ C0] run_ksoftirqd+0x41/0x60 [ 69.140733][ C0] smpboot_thread_fn+0x374/0x4a0 [ 69.145645][ C0] ? constant_test_bit.constprop.0+0x30/0x30 [ 69.151597][ C0] kthread+0x203/0x230 [ 69.155641][ C0] ? kthread_unpark+0xd0/0xd0 [ 69.160292][ C0] ret_from_fork+0x1f/0x30 [ 70.237930][ C0] Shutting down cpus with NMI [ 70.244078][ C0] Kernel Offset: disabled [ 70.248418][ C0] Rebooting in 86400 seconds..