[ 52.825528][ T26] audit: type=1800 audit(1573525915.956:27): pid=7816 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2469 res=0 [ 52.845949][ T26] audit: type=1800 audit(1573525915.956:28): pid=7816 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2450 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 53.709440][ T26] audit: type=1800 audit(1573525916.886:29): pid=7816 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2465 res=0 [ 53.729694][ T26] audit: type=1800 audit(1573525916.886:30): pid=7816 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2456 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.192' (ECDSA) to the list of known hosts. 2019/11/12 02:32:04 fuzzer started 2019/11/12 02:32:06 dialing manager at 10.128.0.105:44241 2019/11/12 02:32:07 syscalls: 2566 2019/11/12 02:32:07 code coverage: enabled 2019/11/12 02:32:07 comparison tracing: enabled 2019/11/12 02:32:07 extra coverage: extra coverage is not supported by the kernel 2019/11/12 02:32:07 setuid sandbox: enabled 2019/11/12 02:32:07 namespace sandbox: enabled 2019/11/12 02:32:07 Android sandbox: /sys/fs/selinux/policy does not exist 2019/11/12 02:32:07 fault injection: enabled 2019/11/12 02:32:07 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/11/12 02:32:07 net packet injection: enabled 2019/11/12 02:32:07 net device setup: enabled 2019/11/12 02:32:07 concurrency sanitizer: enabled 2019/11/12 02:32:07 devlink PCI setup: PCI device 0000:00:10.0 is not available syzkaller login: [ 66.686138][ T7981] KCSAN: could not find function: 'calc_wb_limits' [ 71.524597][ T7981] KCSAN: could not find function: 'poll_schedule_timeout' [ 78.370041][ T7981] KCSAN: could not find function: 'do_cpu_nanosleep' 2019/11/12 02:32:21 adding functions to KCSAN blacklist: '__ext4_new_inode' 'audit_log_start' 'commit_echoes' 'p9_client_cb' 'kvm_arch_vcpu_load' 'tick_do_update_jiffies64' 'vm_area_dup' 'ext4_nonda_switch' 'ext4_mark_iloc_dirty' '__snd_rawmidi_transmit_ack' 'echo_char' 'complete_signal' 'ep_poll' 'fsnotify' 'snapshot_refaults' 'calc_wb_limits' '__hrtimer_run_queues' 'common_perm_cond' 'tick_nohz_idle_stop_tick' 'xas_clear_mark' 'mm_update_next_owner' 'add_timer' 'do_syslog' 'kvm_mmu_notifier_invalidate_range_end' 'sit_tunnel_xmit' 'generic_permission' 'find_next_bit' 'task_dump_owner' 'pipe_wait' 'tcp_add_backlog' 'run_timer_softirq' 'ext4_free_inode' 'ext4_has_free_clusters' 'ext4_free_inodes_count' 'filemap_map_pages' 'ktime_get_seconds' '__perf_event_overflow' 'snd_ctl_notify' 'mem_cgroup_select_victim_node' 'snd_seq_check_queue' 'do_nanosleep' 'poll_schedule_timeout' 'generic_fillattr' 'atime_needs_update' 'taskstats_exit' 'rcu_gp_fqs_check_wake' 'lruvec_lru_size' 'fasync_remove_entry' 'wbt_issue' 'tick_sched_do_timer' 'do_exit' 'kauditd_thread' 'blk_mq_run_hw_queue' 'timer_clear_idle' 'sbitmap_queue_clear' 'exit_signals' 'vti_tunnel_xmit' 'blk_mq_get_request' 'd_instantiate_new' 'queue_access_lock' 'yama_ptracer_del' 'file_update_time' 'ktime_get_real_seconds' 'pipe_poll' 'mod_timer' 'copy_process' 'xas_find_marked' 'osq_lock' '__mark_inode_dirty' 'pid_update_inode' 'find_get_pages_range_tag' '__add_to_page_cache_locked' '__ip6_datagram_connect' 'p9_poll_workfn' 'bio_endio' '__fsnotify_parent' 'generic_write_end' 'page_counter_try_charge' 'process_srcu' 'kernfs_refresh_inode' 'tomoyo_supervisor' 'wbt_done' 'n_tty_receive_buf_common' 'blk_mq_dispatch_rq_list' 'blk_mq_sched_dispatch_requests' 'do_cpu_nanosleep' 'rcu_gp_fqs_loop' '__delete_from_page_cache' 'dd_has_work' [ 245.166578][ C1] ================================================================== [ 245.174747][ C1] BUG: KCSAN: data-race in ktime_get_with_offset / timekeeping_advance [ 245.182962][ C1] [ 245.185274][ C1] write to 0xffffffff86044b08 of 280 bytes by interrupt on cpu 0: [ 245.193067][ C1] timekeeping_advance+0x88e/0xd80 [ 245.198187][ C1] update_wall_time+0x19/0x20 [ 245.202865][ C1] tick_do_update_jiffies64+0x1a4/0x250 [ 245.208408][ C1] tick_sched_do_timer+0xd4/0xe0 [ 245.213343][ C1] tick_sched_timer+0x43/0xe0 [ 245.218022][ C1] __hrtimer_run_queues+0x274/0x5f0 [ 245.223226][ C1] hrtimer_interrupt+0x22a/0x480 [ 245.228157][ C1] smp_apic_timer_interrupt+0xdc/0x280 [ 245.233610][ C1] apic_timer_interrupt+0xf/0x20 [ 245.238529][ C1] kcsan_setup_watchpoint+0x205/0x410 [ 245.243884][ C1] __tsan_read4+0x145/0x1f0 [ 245.249070][ C1] tcp_grow_window.isra.0+0x3ea/0x4d0 [ 245.256613][ C1] tcp_event_data_recv+0x68f/0x990 [ 245.261704][ C1] tcp_rcv_established+0xbfe/0xf50 [ 245.266799][ C1] tcp_v4_do_rcv+0x3b5/0x520 [ 245.271393][ C1] __release_sock+0x135/0x1e0 [ 245.276059][ C1] release_sock+0x61/0x160 [ 245.280457][ C1] tcp_recvmsg+0x653/0x1b40 [ 245.284955][ C1] inet_recvmsg+0xbb/0x250 [ 245.289356][ C1] sock_recvmsg+0x92/0xb0 [ 245.293668][ C1] sock_read_iter+0x15f/0x1e0 [ 245.298336][ C1] new_sync_read+0x389/0x4f0 [ 245.302924][ C1] __vfs_read+0xb1/0xc0 [ 245.307061][ C1] vfs_read+0x143/0x2c0 [ 245.311285][ C1] ksys_read+0xd5/0x1b0 [ 245.315621][ C1] __x64_sys_read+0x4c/0x60 [ 245.320120][ C1] do_syscall_64+0xcc/0x370 [ 245.324620][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 245.330601][ C1] [ 245.332916][ C1] read to 0xffffffff86044b98 of 8 bytes by interrupt on cpu 1: [ 245.340615][ C1] ktime_get_with_offset+0x8e/0x230 [ 245.345795][ C1] netif_receive_skb_internal+0x13e/0x190 [ 245.351581][ C1] napi_gro_receive+0x28f/0x330 [ 245.356432][ C1] receive_buf+0x284/0x30b0 [ 245.360918][ C1] virtnet_poll+0x436/0x7d0 [ 245.365406][ C1] net_rx_action+0x3ae/0xa90 [ 245.370106][ C1] __do_softirq+0x115/0x33f [ 245.374606][ C1] run_ksoftirqd+0x46/0x60 [ 245.379096][ C1] smpboot_thread_fn+0x37d/0x4a0 [ 245.384016][ C1] kthread+0x1d4/0x200 [ 245.388069][ C1] ret_from_fork+0x1f/0x30 [ 245.392459][ C1] [ 245.394765][ C1] Reported by Kernel Concurrency Sanitizer on: [ 245.400903][ C1] CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.4.0-rc6+ #0 [ 245.408433][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 245.418733][ C1] ================================================================== [ 245.426787][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 245.433375][ C1] CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.4.0-rc6+ #0 [ 245.440781][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 245.451029][ C1] Call Trace: [ 245.454322][ C1] dump_stack+0xf5/0x159 [ 245.458549][ C1] panic+0x210/0x640 [ 245.462432][ C1] ? vprintk_func+0x8d/0x140 [ 245.467023][ C1] kcsan_report.cold+0xc/0xe [ 245.471608][ C1] kcsan_setup_watchpoint+0x3fe/0x410 [ 245.476974][ C1] __tsan_read8+0x145/0x1f0 [ 245.482254][ C1] ktime_get_with_offset+0x8e/0x230 [ 245.487453][ C1] netif_receive_skb_internal+0x13e/0x190 [ 245.493160][ C1] napi_gro_receive+0x28f/0x330 [ 245.497998][ C1] receive_buf+0x284/0x30b0 [ 245.502494][ C1] ? virtqueue_get_buf_ctx+0x4fd/0x5c0 [ 245.507947][ C1] ? virtqueue_get_buf+0x31/0x40 [ 245.512891][ C1] virtnet_poll+0x436/0x7d0 [ 245.517385][ C1] ? __sanitizer_cov_trace_cmp2+0x18/0x20 [ 245.523111][ C1] net_rx_action+0x3ae/0xa90 [ 245.527724][ C1] __do_softirq+0x115/0x33f [ 245.532405][ C1] ? takeover_tasklets+0x250/0x250 [ 245.537504][ C1] run_ksoftirqd+0x46/0x60 [ 245.541905][ C1] smpboot_thread_fn+0x37d/0x4a0 [ 245.546832][ C1] kthread+0x1d4/0x200 [ 245.550888][ C1] ? constant_test_bit.constprop.0+0x30/0x30 [ 245.556870][ C1] ? kthread_stop+0x2d0/0x2d0 [ 245.562275][ C1] ret_from_fork+0x1f/0x30 [ 245.567971][ C1] Kernel Offset: disabled [ 245.576329][ C1] Rebooting in 86400 seconds..