Warning: Permanently added '10.128.10.32' (ECDSA) to the list of known hosts. 2020/04/19 07:31:44 fuzzer started syzkaller login: [ 46.139604][ T6696] as (6696) used greatest stack depth: 10440 bytes left 2020/04/19 07:31:47 dialing manager at 10.128.0.105:45083 2020/04/19 07:31:47 syscalls: 2960 2020/04/19 07:31:47 code coverage: enabled 2020/04/19 07:31:47 comparison tracing: enabled 2020/04/19 07:31:47 extra coverage: enabled 2020/04/19 07:31:47 setuid sandbox: enabled 2020/04/19 07:31:47 namespace sandbox: enabled 2020/04/19 07:31:47 Android sandbox: /sys/fs/selinux/policy does not exist 2020/04/19 07:31:47 fault injection: enabled 2020/04/19 07:31:47 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/04/19 07:31:47 net packet injection: enabled 2020/04/19 07:31:47 net device setup: enabled 2020/04/19 07:31:47 concurrency sanitizer: enabled 2020/04/19 07:31:47 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/04/19 07:31:47 USB emulation: /dev/raw-gadget does not exist [ 49.086528][ T6704] KCSAN: could not find function: '_find_next_bit' [ 49.633225][ T6704] KCSAN: could not find function: 'poll_schedule_timeout' 2020/04/19 07:31:53 adding functions to KCSAN blacklist: 'ktime_get_real_seconds' '__synchronize_hardirq' 'generic_file_read_iter' 'shmem_file_read_iter' 'get_cpu_iowait_time_us' '__add_to_page_cache_locked' 'fsnotify' 'blk_mq_sched_dispatch_requests' 'dd_has_work' 'blk_mq_free_request' 'wbt_issue' 'ptrace_check_attach' '__filemap_fdatawrite_range' 'blk_mq_get_request' 'xas_clear_mark' 'run_timer_softirq' '__d_lookup_done' 'do_signal_stop' 'padata_find_next' 'copy_process' '_find_next_bit' '__mark_inode_dirty' 'poll_schedule_timeout' 'pipe_double_lock' '__bpf_lru_node_move_in' 'ep_poll' 'xas_find_marked' 'tick_nohz_idle_stop_tick' 'get_signal' 'generic_update_time' '__x64_sys_ptrace' 'generic_fillattr' 'find_get_pages_range_tag' 'echo_char' 'do_nanosleep' 'vfs_readlink' 'tick_nohz_next_event' 'ext4_setattr' '__rb_insert_augmented' 'kauditd_thread' 'wbt_done' '__ext4_new_inode' 'blk_mq_dispatch_rq_list' 'tick_sched_do_timer' 'add_timer' 'path_openat' 'ext4_mark_iloc_dirty' 'mod_timer' 'filemap_map_pages' 'pcpu_alloc' 'file_remove_privs' 'generic_write_end' 'audit_log_start' 'do_exit' 'n_tty_receive_buf_common' 'page_counter_charge' 'kcm_rfree' 'ext4_free_inodes_count' 'ktime_get_seconds' [ 129.422724][ C1] ================================================================== [ 129.430904][ C1] BUG: KCSAN: data-race in timer_clear_idle / trigger_dyntick_cpu.isra.0 [ 129.439289][ C1] [ 129.441606][ C1] write to 0xffff88812c01dca4 of 1 bytes by task 0 on cpu 0: [ 129.448960][ C1] timer_clear_idle+0x3d/0x50 [ 129.453620][ C1] __tick_nohz_idle_restart_tick+0x32/0x1a0 [ 129.459504][ C1] tick_nohz_idle_exit+0x19c/0x1d0 [ 129.465206][ C1] do_idle+0xac/0x290 [ 129.469174][ C1] cpu_startup_entry+0x14/0x20 [ 129.473917][ C1] rest_init+0xe4/0xeb [ 129.477969][ C1] arch_call_rest_init+0x13/0x2b [ 129.482898][ C1] start_kernel+0x82d/0x852 [ 129.487392][ C1] secondary_startup_64+0xa4/0xb0 [ 129.492390][ C1] [ 129.494767][ C1] read to 0xffff88812c01dca4 of 1 bytes by interrupt on cpu 1: [ 129.502295][ C1] trigger_dyntick_cpu.isra.0+0x6d/0xf0 [ 129.507869][ C1] add_timer_on+0x192/0x2c0 [ 129.512355][ C1] clocksource_watchdog+0x699/0x7c0 [ 129.517536][ C1] call_timer_fn+0x58/0x2e0 [ 129.522323][ C1] run_timer_softirq+0xb14/0xbd0 [ 129.527242][ C1] __do_softirq+0x118/0x34a [ 129.531727][ C1] run_ksoftirqd+0x41/0x60 [ 129.536123][ C1] smpboot_thread_fn+0x374/0x4a0 [ 129.541038][ C1] kthread+0x203/0x230 [ 129.545262][ C1] ret_from_fork+0x1f/0x30 [ 129.549648][ C1] [ 129.551952][ C1] Reported by Kernel Concurrency Sanitizer on: [ 129.558084][ C1] CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.7.0-rc1-syzkaller #0 [ 129.566401][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 129.576520][ C1] ================================================================== [ 129.584579][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 129.591146][ C1] CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.7.0-rc1-syzkaller #0 [ 129.599278][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 129.609307][ C1] Call Trace: [ 129.612583][ C1] dump_stack+0x11d/0x187 [ 129.616895][ C1] panic+0x210/0x640 [ 129.620858][ C1] ? vprintk_func+0x89/0x13a [ 129.625453][ C1] kcsan_report.cold+0xc/0x1a [ 129.630556][ C1] kcsan_setup_watchpoint+0x3fb/0x440 [ 129.635909][ C1] trigger_dyntick_cpu.isra.0+0x6d/0xf0 [ 129.641522][ C1] add_timer_on+0x192/0x2c0 [ 129.646202][ C1] clocksource_watchdog+0x699/0x7c0 [ 129.651759][ C1] ? clocksource_select_watchdog+0x410/0x410 [ 129.657733][ C1] ? clocksource_select_watchdog+0x410/0x410 [ 129.664879][ C1] call_timer_fn+0x58/0x2e0 [ 129.669370][ C1] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 129.675258][ C1] ? clocksource_select_watchdog+0x410/0x410 [ 129.681223][ C1] run_timer_softirq+0xb14/0xbd0 [ 129.686152][ C1] ? kvm_clock_read+0x14/0x30 [ 129.690810][ C1] ? kvm_sched_clock_read+0x5/0x10 [ 129.695914][ C1] ? sched_clock+0xf/0x20 [ 129.700241][ C1] ? sched_clock_cpu+0x10/0xd0 [ 129.705005][ C1] __do_softirq+0x118/0x34a [ 129.709491][ C1] ? takeover_tasklets+0x240/0x240 [ 129.714610][ C1] run_ksoftirqd+0x41/0x60 [ 129.719008][ C1] smpboot_thread_fn+0x374/0x4a0 [ 129.723927][ C1] ? constant_test_bit.constprop.0+0x30/0x30 [ 129.729886][ C1] kthread+0x203/0x230 [ 129.733949][ C1] ? kthread_unpark+0xd0/0xd0 [ 129.738606][ C1] ret_from_fork+0x1f/0x30 [ 130.816488][ C1] Shutting down cpus with NMI [ 130.822887][ C1] Kernel Offset: disabled [ 130.827326][ C1] Rebooting in 86400 seconds..