Warning: Permanently added '10.128.0.212' (ECDSA) to the list of known hosts. 2020/04/25 16:32:32 fuzzer started 2020/04/25 16:32:34 dialing manager at 10.128.0.105:43643 2020/04/25 16:32:34 syscalls: 2960 2020/04/25 16:32:34 code coverage: enabled 2020/04/25 16:32:34 comparison tracing: enabled 2020/04/25 16:32:34 extra coverage: enabled 2020/04/25 16:32:34 setuid sandbox: enabled 2020/04/25 16:32:34 namespace sandbox: enabled 2020/04/25 16:32:34 Android sandbox: /sys/fs/selinux/policy does not exist 2020/04/25 16:32:34 fault injection: enabled 2020/04/25 16:32:34 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2020/04/25 16:32:34 net packet injection: enabled 2020/04/25 16:32:34 net device setup: enabled 2020/04/25 16:32:34 concurrency sanitizer: enabled 2020/04/25 16:32:34 devlink PCI setup: PCI device 0000:00:10.0 is not available 2020/04/25 16:32:34 USB emulation: /dev/raw-gadget does not exist [ 50.325337][ T6703] KCSAN: could not find function: 'poll_schedule_timeout' [ 51.216497][ T6703] KCSAN: could not find function: 'calc_wb_limits' [ 54.126190][ T6703] KCSAN: could not find function: '_find_next_bit' 2020/04/25 16:32:39 adding functions to KCSAN blacklist: 'get_cpu_iowait_time_us' 'n_tty_receive_buf_common' 'run_timer_softirq' 'echo_char' 'find_get_pages_range_tag' 'kauditd_thread' 'generic_fillattr' 'do_exit' 'wbt_issue' 'futex_wait_queue_me' 'xas_clear_mark' 'poll_schedule_timeout' 'ext4_free_inodes_count' 'blk_mq_sched_dispatch_requests' 'yama_ptracer_del' 'audit_log_start' 'calc_wb_limits' 'copy_process' 'mod_timer' 'tick_sched_do_timer' '__snd_rawmidi_transmit_ack' 'do_syslog' 'blk_mq_dispatch_rq_list' '__ext4_new_inode' 'ext4_mb_good_group' 'do_wait' 'do_nanosleep' 'generic_write_end' 'shmem_add_to_page_cache' 'add_timer' 'smpboot_thread_fn' 'io_sq_thread' 'ext4_mark_iloc_dirty' 'ext4_handle_inode_extension' 'pcpu_alloc' 'unix_release_sock' 'page_counter_charge' 'do_signal_stop' 'ktime_get_real_seconds' 'ep_poll' 'blk_mq_get_request' '_find_next_bit' 'tick_nohz_idle_stop_tick' 'lookup_fast' [ 59.772469][ C0] ================================================================== [ 59.780706][ C0] BUG: KCSAN: data-race in add_timer_on / timer_clear_idle [ 59.787893][ C0] [ 59.790220][ C0] write to 0xffff88812c11dca4 of 1 bytes by task 0 on cpu 1: [ 59.797592][ C0] timer_clear_idle+0x3d/0x50 [ 59.802269][ C0] __tick_nohz_idle_restart_tick+0x32/0x1a0 [ 59.808161][ C0] tick_nohz_idle_exit+0x19c/0x1d0 [ 59.813280][ C0] do_idle+0xac/0x290 [ 59.817248][ C0] cpu_startup_entry+0x14/0x20 [ 59.822125][ C0] start_secondary+0x169/0x1b0 [ 59.826899][ C0] secondary_startup_64+0xa4/0xb0 [ 59.831908][ C0] [ 59.834228][ C0] read to 0xffff88812c11dca4 of 1 bytes by interrupt on cpu 0: [ 59.841757][ C0] add_timer_on+0x21f/0x2c0 [ 59.846264][ C0] clocksource_watchdog+0x699/0x7c0 [ 59.851493][ C0] call_timer_fn+0x58/0x2e0 [ 59.855986][ C0] run_timer_softirq+0xb14/0xbd0 [ 59.860919][ C0] __do_softirq+0x118/0x34a [ 59.865416][ C0] irq_exit+0xb5/0xd0 [ 59.869380][ C0] smp_apic_timer_interrupt+0xe2/0x270 [ 59.874829][ C0] apic_timer_interrupt+0xf/0x20 [ 59.879737][ C0] [ 59.882041][ C0] Reported by Kernel Concurrency Sanitizer on: [ 59.888175][ C0] CPU: 0 PID: 6689 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0 [ 59.896485][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.906631][ C0] ================================================================== [ 59.914680][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 59.921269][ C0] CPU: 0 PID: 6689 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0 [ 59.929505][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.939560][ C0] Call Trace: [ 59.942839][ C0] [ 59.945684][ C0] dump_stack+0x11d/0x187 [ 59.950011][ C0] panic+0x210/0x640 [ 59.953909][ C0] ? vprintk_func+0x89/0x13a [ 59.958492][ C0] kcsan_report.cold+0xc/0x1a [ 59.963158][ C0] kcsan_setup_watchpoint+0x3fb/0x440 [ 59.968554][ C0] add_timer_on+0x21f/0x2c0 [ 59.973052][ C0] clocksource_watchdog+0x699/0x7c0 [ 59.978243][ C0] ? clocksource_select_watchdog+0x410/0x410 [ 59.984213][ C0] ? clocksource_select_watchdog+0x410/0x410 [ 59.990243][ C0] call_timer_fn+0x58/0x2e0 [ 59.994746][ C0] ? __sanitizer_cov_trace_switch+0x45/0x70 [ 60.000681][ C0] ? clocksource_select_watchdog+0x410/0x410 [ 60.006752][ C0] run_timer_softirq+0xb14/0xbd0 [ 60.011684][ C0] ? kvm_clock_read+0x14/0x30 [ 60.016344][ C0] ? kvm_sched_clock_read+0x5/0x10 [ 60.021454][ C0] ? sched_clock+0xf/0x20 [ 60.025769][ C0] ? sched_clock_cpu+0x10/0xd0 [ 60.030516][ C0] __do_softirq+0x118/0x34a [ 60.035004][ C0] irq_exit+0xb5/0xd0 [ 60.038968][ C0] smp_apic_timer_interrupt+0xe2/0x270 [ 60.044415][ C0] apic_timer_interrupt+0xf/0x20 [ 60.049326][ C0] [ 60.052251][ C0] RIP: 0033:0x608686 [ 60.056134][ C0] Code: c8 10 00 00 48 85 d2 0f 84 8b 00 00 00 48 83 fa 01 0f 85 81 00 00 00 48 89 8c 24 a8 00 00 00 84 01 48 8d 91 88 10 00 00 84 02 <48> 8b 99 18 11 00 00 48 8b b1 10 11 00 00 4c 8b 81 a0 10 00 00 4c [ 60.075727][ C0] RSP: 002b:000000c420051a80 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 60.084174][ C0] RAX: 0000000000000000 RBX: 000000c420438000 RCX: 000000c420438000 [ 60.092179][ C0] RDX: 000000c420439088 RSI: 0000000000008000 RDI: 0000000000000014 [ 60.100139][ C0] RBP: 000000c420051b18 R08: 0000000000000400 R09: ffffffffffffffff [ 60.108364][ C0] R10: 00000000ffffffff R11: 0000000000007918 R12: 0000000000000008 [ 60.116333][ C0] R13: ffffffffffffffff R14: 0000000000000002 R15: ffffffffffffffff [ 61.201282][ C0] Shutting down cpus with NMI [ 61.207605][ C0] Kernel Offset: disabled [ 61.211952][ C0] Rebooting in 86400 seconds..