[ 52.731637][ T26] audit: type=1800 audit(1573182958.304:27): pid=7911 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2469 res=0 [ 52.761962][ T26] audit: type=1800 audit(1573182958.304:28): pid=7911 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. [ 53.588065][ T26] audit: type=1800 audit(1573182959.244:29): pid=7911 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 [ 53.608176][ T26] audit: type=1800 audit(1573182959.244:30): pid=7911 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 '10.128.15.199' (ECDSA) to the list of known hosts. 2019/11/08 03:16:07 fuzzer started 2019/11/08 03:16:09 dialing manager at 10.128.0.105:38105 2019/11/08 03:16:09 syscalls: 2553 2019/11/08 03:16:09 code coverage: enabled 2019/11/08 03:16:09 comparison tracing: enabled 2019/11/08 03:16:09 extra coverage: extra coverage is not supported by the kernel 2019/11/08 03:16:09 setuid sandbox: enabled 2019/11/08 03:16:09 namespace sandbox: enabled 2019/11/08 03:16:09 Android sandbox: /sys/fs/selinux/policy does not exist 2019/11/08 03:16:09 fault injection: enabled 2019/11/08 03:16:09 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/11/08 03:16:09 net packet injection: enabled 2019/11/08 03:16:09 net device setup: enabled 2019/11/08 03:16:09 concurrency sanitizer: enabled 2019/11/08 03:16:09 devlink PCI setup: PCI device 0000:00:10.0 is not available syzkaller login: [ 74.835898][ T8077] KCSAN: could not find function: 'poll_schedule_timeout' 2019/11/08 03:16:24 adding functions to KCSAN blacklist: 'ktime_get_seconds' '__dentry_kill' 'commit_echoes' 'neigh_resolve_output' 'rq_depth_scale_up' 'add_timer' 'ep_poll' 'generic_write_end' 'shmem_file_read_iter' 'kauditd_thread' 'blk_mq_sched_dispatch_requests' 'ext4_free_inodes_count' 'osq_lock' 'generic_fillattr' 'atime_needs_update' 'ktime_get_with_offset' '__snd_rawmidi_transmit_ack' 'blk_stat_add' 'blk_mq_run_hw_queue' '__find_get_block' 'shmem_add_to_page_cache' 'exit_signals' 'n_tty_receive_buf_common' '__delete_from_page_cache' 'pipe_poll' 'tomoyo_supervisor' 'generic_permission' 'ktime_get_real_seconds' 'task_dump_owner' 'dccp_rcv_reset' 'timer_clear_idle' '__cgroup_account_cputime' 'tcp_add_backlog' 'kvm_arch_vcpu_load' 'find_get_pages_range_tag' 'xas_clear_mark' 'p9_poll_workfn' 'blk_mq_free_request' 'fuse_abort_conn' 'ext4_nonda_switch' 'wbt_done' 'lruvec_lru_size' 'dd_has_work' 'pcpu_alloc' 'ext4_mark_iloc_dirty' 'do_nanosleep' 'tick_sched_do_timer' 'echo_char' 'sit_tunnel_xmit' '__skb_try_recv_from_queue' '__rb_insert_augmented' 'blk_mq_dispatch_rq_list' 'tick_nohz_idle_stop_tick' 'xas_find_marked' 'd_instantiate_new' 'mm_update_next_owner' 'taskstats_exit' 'mod_timer' 'copy_process' 'complete_signal' 'ext4_mb_find_by_goal' 'rcu_gp_fqs_check_wake' 'poll_schedule_timeout' 'tick_do_update_jiffies64' 'sctp_assoc_migrate' 'do_signal_stop' '__hrtimer_run_queues' 'blk_mq_get_request' 'tick_nohz_next_event' '__ext4_new_inode' 'process_srcu' 'mem_cgroup_select_victim_node' 'kvm_mmu_notifier_invalidate_range_end' '__dev_queue_xmit' 'ext4_free_inode' 'snapshot_refaults' '__wb_update_bandwidth' 'pipe_wait' 'do_exit' '__alloc_file' 'ext4_mb_good_group' 'vm_area_dup' 'rcu_gp_fqs_loop' 'balance_dirty_pages' 'page_counter_try_charge' 'ext4_has_free_clusters' '__mark_inode_dirty' 'list_lru_count_one' 'run_timer_softirq' 'audit_log_start' 'do_syslog' '__perf_event_overflow' 'wbt_issue' 'fsnotify' 'find_next_bit' 'pid_update_inode' '__add_to_page_cache_locked' 'snd_seq_check_queue' 'fasync_remove_entry' 'common_perm_cond' [ 297.624118][ C0] ================================================================== [ 297.632254][ C0] BUG: KCSAN: data-race in hrtimer_wakeup / schedule_hrtimeout_range_clock [ 297.640814][ C0] [ 297.643132][ C0] read to 0xffffc90001663848 of 8 bytes by task 8062 on cpu 1: [ 297.650655][ C0] schedule_hrtimeout_range_clock+0x109/0x1e0 [ 297.656701][ C0] schedule_hrtimeout_range+0x34/0x50 [ 297.662065][ C0] poll_schedule_timeout.constprop.0+0x75/0xc0 [ 297.668223][ C0] do_select+0xd7f/0x1020 [ 297.672635][ C0] core_sys_select+0x381/0x550 [ 297.677413][ C0] do_pselect.constprop.0+0x11d/0x160 [ 297.683058][ C0] __x64_sys_pselect6+0x12e/0x170 [ 297.688069][ C0] do_syscall_64+0xcc/0x370 [ 297.692641][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 297.698519][ C0] [ 297.701040][ C0] write to 0xffffc90001663848 of 8 bytes by interrupt on cpu 0: [ 297.709694][ C0] hrtimer_wakeup+0x32/0x60 [ 297.714180][ C0] __hrtimer_run_queues+0x274/0x5f0 [ 297.719446][ C0] hrtimer_interrupt+0x22a/0x480 [ 297.724667][ C0] smp_apic_timer_interrupt+0xdc/0x280 [ 297.730122][ C0] apic_timer_interrupt+0xf/0x20 [ 297.735215][ C0] active_load_balance_cpu_stop+0x91/0x2b0 [ 297.741013][ C0] cpu_stopper_thread+0x167/0x290 [ 297.746023][ C0] smpboot_thread_fn+0x37d/0x4a0 [ 297.751034][ C0] kthread+0x1d4/0x200 [ 297.755124][ C0] ret_from_fork+0x1f/0x30 [ 297.759523][ C0] [ 297.761828][ C0] Reported by Kernel Concurrency Sanitizer on: [ 297.767964][ C0] CPU: 0 PID: 11 Comm: migration/0 Not tainted 5.4.0-rc6+ #0 [ 297.775306][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 297.785427][ C0] ================================================================== [ 297.793481][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 297.800059][ C0] CPU: 0 PID: 11 Comm: migration/0 Not tainted 5.4.0-rc6+ #0 [ 297.807428][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 297.817486][ C0] Call Trace: [ 297.820773][ C0] [ 297.823646][ C0] dump_stack+0xf5/0x159 [ 297.827907][ C0] panic+0x210/0x640 [ 297.832000][ C0] ? vprintk_func+0x8d/0x140 [ 297.836613][ C0] kcsan_report.cold+0xc/0xe [ 297.841210][ C0] kcsan_setup_watchpoint+0x3fe/0x410 [ 297.846591][ C0] __tsan_unaligned_write8+0x143/0x1f0 [ 297.852654][ C0] hrtimer_wakeup+0x32/0x60 [ 297.857151][ C0] __hrtimer_run_queues+0x274/0x5f0 [ 297.862427][ C0] ? hrtimer_active+0x1a0/0x1a0 [ 297.867275][ C0] hrtimer_interrupt+0x22a/0x480 [ 297.872217][ C0] smp_apic_timer_interrupt+0xdc/0x280 [ 297.877749][ C0] ? smp_reschedule_interrupt+0x71/0x1d0 [ 297.883370][ C0] apic_timer_interrupt+0xf/0x20 [ 297.888283][ C0] [ 297.891220][ C0] RIP: 0010:active_load_balance_cpu_stop+0x91/0x2b0 [ 297.897798][ C0] Code: 4d 41 c7 84 24 18 0a 00 00 00 00 00 00 4c 89 e7 e8 84 d1 61 03 48 83 3d 9c b1 70 04 00 0f 84 d5 01 00 00 fb 66 0f 1f 44 00 00 <31> c0 48 8b 75 d0 65 48 33 34 25 28 00 00 00 0f 85 f2 01 00 00 48 [ 297.917469][ C0] RSP: 0018:ffffc90000cc3db8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 297.925955][ C0] RAX: 0000000080000001 RBX: ffff88812b3b8800 RCX: 0000000000000000 [ 297.933904][ C0] RDX: 0000000000000002 RSI: 0000000000000016 RDI: 00000000ffffffff [ 297.941857][ C0] RBP: ffffc90000cc3e60 R08: 0000ffff85a564d8 R09: 00000000aaaaaaab [ 297.949995][ C0] R10: 0000ffff85a564df R11: 0000000000000000 R12: ffff88812be2a3c0 [ 297.958213][ C0] R13: ffff88812bf2a3c0 R14: ffff888123656100 R15: 000000000002a3c0 [ 297.966198][ C0] ? active_load_balance_cpu_stop+0x25a/0x2b0 [ 297.972274][ C0] cpu_stopper_thread+0x167/0x290 [ 297.977282][ C0] ? can_migrate_task+0x440/0x440 [ 297.982292][ C0] ? cpu_stop_create+0x60/0x60 [ 297.987036][ C0] smpboot_thread_fn+0x37d/0x4a0 [ 297.991957][ C0] kthread+0x1d4/0x200 [ 297.996014][ C0] ? constant_test_bit.constprop.0+0x30/0x30 [ 298.001976][ C0] ? kthread_stop+0x2d0/0x2d0 [ 298.006645][ C0] ret_from_fork+0x1f/0x30 [ 298.012523][ C0] Kernel Offset: disabled [ 298.016917][ C0] Rebooting in 86400 seconds..