Warning: Permanently added '10.128.0.195' (ECDSA) to the list of known hosts. 2019/12/21 10:18:29 fuzzer started 2019/12/21 10:18:31 dialing manager at 10.128.0.105:34305 2019/12/21 10:18:31 syscalls: 2690 2019/12/21 10:18:31 code coverage: enabled 2019/12/21 10:18:31 comparison tracing: enabled 2019/12/21 10:18:31 extra coverage: enabled 2019/12/21 10:18:31 setuid sandbox: enabled 2019/12/21 10:18:31 namespace sandbox: enabled 2019/12/21 10:18:31 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/21 10:18:31 fault injection: enabled 2019/12/21 10:18:31 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/21 10:18:31 net packet injection: enabled 2019/12/21 10:18:31 net device setup: enabled 2019/12/21 10:18:31 concurrency sanitizer: enabled 2019/12/21 10:18:31 devlink PCI setup: PCI device 0000:00:10.0 is not available [ 80.810727][ T7894] KCSAN: could not find function: 'poll_schedule_timeout' 2019/12/21 10:18:42 adding functions to KCSAN blacklist: 'generic_fillattr' 'page_counter_try_charge' 'add_timer' 'blk_mq_run_hw_queue' 'ext4_free_inode' 'sit_tunnel_xmit' 'wbt_issue' 'do_readlinkat' 'mod_timer' 'taskstats_exit' 'ext4_free_inodes_count' 'mm_update_next_owner' 'pid_update_inode' 'do_syslog' 'ext4_has_free_clusters' 'lruvec_lru_size' 'xas_clear_mark' 'find_next_bit' 'rcu_gp_fqs_check_wake' 'tomoyo_supervisor' 'generic_write_end' 'futex_wait_queue_me' 'n_tty_receive_buf_common' 'ktime_get_real_seconds' 'relay_switch_subbuf' 'do_nanosleep' 'netlink_deliver_tap' 'echo_char' 'exit_signals' 'virtqueue_enable_cb_delayed' 'ext4_nonda_switch' 'blk_mq_get_request' 'ext4_alloc_da_blocks' 'audit_log_start' 'virtqueue_disable_cb' 'pcpu_alloc' 'vti_tunnel_xmit' '__ext4_new_inode' 'skb_dequeue' 'blk_mq_dispatch_rq_list' 'vm_area_dup' 'copy_process' 'generic_update_time' 'do_try_to_free_pages' 'tick_do_update_jiffies64' '__mark_inode_dirty' 'kauditd_thread' 'kvm_mmu_notifier_invalidate_range_end' 'xas_find_marked' 'do_signal_stop' 'd_instantiate_new' 'find_get_pages_range_tag' 'ep_poll' 'wbt_done' 'timer_clear_idle' 'generic_file_read_iter' 'run_timer_softirq' 'blk_mq_sched_dispatch_requests' '__perf_event_overflow' 'ext4_mb_find_by_goal' 'kcm_rcv_strparser' 'ext4_mark_iloc_dirty' '__hrtimer_run_queues' 'dd_has_work' 'iomap_dio_bio_actor' 'list_lru_add' 'tomoyo_check_path_acl' 'process_srcu' 'tick_nohz_idle_stop_tick' 'ext4_da_write_end' '__rcu_read_unlock' '__tty_hangup' 'poll_schedule_timeout' 'ns_capable_common' 'fasync_remove_entry' 'tick_sched_do_timer' '__snd_rawmidi_transmit_ack' [ 176.709435][ T7880] ================================================================== [ 176.717646][ T7880] BUG: KCSAN: data-race in poll_schedule_timeout.constprop.0 / watchdog [ 176.725978][ T7880] [ 176.728323][ T7880] read to 0xffff8881221660d0 of 8 bytes by task 1066 on cpu 0: [ 176.736048][ T7880] watchdog+0x2b1/0x960 [ 176.740210][ T7880] kthread+0x1d4/0x200 [ 176.744287][ T7880] ret_from_fork+0x1f/0x30 [ 176.748696][ T7880] [ 176.751031][ T7880] write to 0xffff8881221660d0 of 8 bytes by task 7880 on cpu 1: [ 176.758684][ T7880] poll_schedule_timeout.constprop.0+0x8f/0xc0 [ 176.764848][ T7880] do_select+0xd7f/0x1020 [ 176.769194][ T7880] core_sys_select+0x312/0x650 [ 176.773994][ T7880] do_pselect.constprop.0+0x11d/0x160 [ 176.779376][ T7880] __x64_sys_pselect6+0x12e/0x170 [ 176.784412][ T7880] do_syscall_64+0xcc/0x3a0 [ 176.788928][ T7880] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 176.794811][ T7880] [ 176.797137][ T7880] Reported by Kernel Concurrency Sanitizer on: [ 176.803303][ T7880] CPU: 1 PID: 7880 Comm: syz-fuzzer Not tainted 5.5.0-rc1-syzkaller #0 [ 176.811533][ T7880] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 176.821584][ T7880] ================================================================== [ 176.829647][ T7880] Kernel panic - not syncing: panic_on_warn set ... [ 176.836227][ T7880] CPU: 1 PID: 7880 Comm: syz-fuzzer Not tainted 5.5.0-rc1-syzkaller #0 [ 176.844467][ T7880] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 176.854518][ T7880] Call Trace: [ 176.857939][ T7880] dump_stack+0x11d/0x181 [ 176.862728][ T7880] panic+0x210/0x640 [ 176.866649][ T7880] ? vprintk_func+0x8d/0x140 [ 176.871247][ T7880] kcsan_report.cold+0xc/0xd [ 176.875839][ T7880] kcsan_setup_watchpoint+0x3fe/0x460 [ 176.881476][ T7880] __tsan_unaligned_write8+0xc7/0x110 [ 176.886850][ T7880] poll_schedule_timeout.constprop.0+0x8f/0xc0 [ 176.893003][ T7880] do_select+0xd7f/0x1020 [ 176.897347][ T7880] ? __const_udelay+0x36/0x40 [ 176.902021][ T7880] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 176.908269][ T7880] ? __rcu_read_unlock+0x66/0x3d0 [ 176.913304][ T7880] ? __rcu_read_unlock+0x66/0x3d0 [ 176.918443][ T7880] ? update_load_avg+0x7b/0x5d0 [ 176.923298][ T7880] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 176.929194][ T7880] ? __read_once_size+0x41/0xe0 [ 176.934047][ T7880] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 176.939766][ T7880] ? gup_pgd_range+0x5cb/0x1990 [ 176.944639][ T7880] ? __read_once_size.constprop.0+0x12/0x20 [ 176.950528][ T7880] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 176.956937][ T7880] ? should_fail+0xd4/0x45d [ 176.961444][ T7880] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 176.967352][ T7880] ? __read_once_size+0x41/0xe0 [ 176.972198][ T7880] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 176.978431][ T7880] ? get_futex_key+0x55e/0xa10 [ 176.983191][ T7880] ? __rcu_read_unlock+0x66/0x3d0 [ 176.988211][ T7880] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 176.994111][ T7880] core_sys_select+0x312/0x650 [ 176.999198][ T7880] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 177.005086][ T7880] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 177.010797][ T7880] ? _copy_to_user+0x84/0xb0 [ 177.015385][ T7880] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 177.021271][ T7880] ? __read_once_size+0x5a/0xe0 [ 177.026126][ T7880] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 177.032357][ T7880] ? ktime_get_ts64+0x286/0x2c0 [ 177.037205][ T7880] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 177.042921][ T7880] ? timespec64_add_safe+0xae/0xd0 [ 177.048041][ T7880] do_pselect.constprop.0+0x11d/0x160 [ 177.053418][ T7880] __x64_sys_pselect6+0x12e/0x170 [ 177.058458][ T7880] ? switch_fpu_return+0x11e/0x250 [ 177.063569][ T7880] do_syscall_64+0xcc/0x3a0 [ 177.068077][ T7880] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 177.073959][ T7880] RIP: 0033:0x45ac23 [ 177.077853][ T7880] Code: 48 89 44 24 08 bf 00 00 00 00 be 00 00 00 00 ba 00 00 00 00 41 ba 00 00 00 00 49 89 e0 41 b9 00 00 00 00 b8 0e 01 00 00 0f 05 <48> 8b 6c 24 10 48 83 c4 18 c3 cc cc cc b8 ba 00 00 00 0f 05 89 44 [ 177.097447][ T7880] RSP: 002b:000000c42004ff08 EFLAGS: 00000202 ORIG_RAX: 000000000000010e [ 177.105848][ T7880] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000045ac23 [ 177.113850][ T7880] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 177.121828][ T7880] RBP: 000000c42004ff18 R08: 000000c42004ff08 R09: 0000000000000000 [ 177.129881][ T7880] R10: 0000000000000000 R11: 0000000000000202 R12: 000000000042f0a0 [ 177.137866][ T7880] R13: 00000000000000f1 R14: 0000000000000011 R15: 0000000000000000 [ 177.147470][ T7880] Kernel Offset: disabled [ 177.151802][ T7880] Rebooting in 86400 seconds..