[info] Using makefile-style concurrent boot in runlevel 2. [ 46.035210][ T26] audit: type=1800 audit(1575947593.764:21): pid=7437 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2452 res=0 [ 46.085242][ T26] audit: type=1800 audit(1575947593.774:22): pid=7437 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="motd" dev="sda1" ino=2480 res=0 [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.75' (ECDSA) to the list of known hosts. 2019/12/10 03:13:22 fuzzer started 2019/12/10 03:13:24 dialing manager at 10.128.0.105:38603 2019/12/10 03:13:24 syscalls: 2689 2019/12/10 03:13:24 code coverage: enabled 2019/12/10 03:13:24 comparison tracing: enabled 2019/12/10 03:13:24 extra coverage: extra coverage is not supported by the kernel 2019/12/10 03:13:24 setuid sandbox: enabled 2019/12/10 03:13:24 namespace sandbox: enabled 2019/12/10 03:13:24 Android sandbox: /sys/fs/selinux/policy does not exist 2019/12/10 03:13:24 fault injection: enabled 2019/12/10 03:13:24 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/12/10 03:13:24 net packet injection: enabled 2019/12/10 03:13:24 net device setup: enabled 2019/12/10 03:13:24 concurrency sanitizer: enabled 2019/12/10 03:13:24 devlink PCI setup: PCI device 0000:00:10.0 is not available syzkaller login: [ 63.297164][ T7601] KCSAN: could not find function: 'poll_schedule_timeout' [ 64.744964][ T7601] KCSAN: could not find function: 'may_open' 2019/12/10 03:13:37 adding functions to KCSAN blacklist: 'ep_poll' 'generic_fillattr' 'ext4_nonda_switch' 'rcu_gp_fqs_check_wake' 'tick_do_update_jiffies64' 'do_nanosleep' 'inactive_list_is_low' 'futex_wait_queue_me' 'exit_signals' 'queue_access_lock' 'tick_nohz_idle_stop_tick' 'pcpu_alloc' '__d_lookup_done' 'blk_mq_dispatch_rq_list' 'rcu_gp_fqs_loop' '__dev_queue_xmit' 'echo_char' 'kvm_mmu_notifier_invalidate_range_end' 'tcp_add_backlog' 'skb_dequeue' 'vm_area_dup' 'dd_has_work' 'ext4_free_inode' 'ext4_free_inodes_count' 'install_new_memslots' '__hrtimer_run_queues' 'mod_timer' 'pid_update_inode' 'tick_sched_do_timer' 'blk_mq_get_request' 'pipe_wait' 'list_lru_count_one' 'evict' 'run_timer_softirq' 'aio_read_events' '__mark_inode_dirty' 'xas_clear_mark' 'add_timer' 'sbitmap_queue_clear' 'ext4_has_free_clusters' 'do_readlinkat' 'tomoyo_supervisor' 'poll_schedule_timeout' 'process_srcu' 'ktime_get_real_seconds' 'kauditd_thread' 'generic_write_end' '__ext4_new_inode' 'padata_find_next' 'common_perm_cond' 'watchdog' 'do_syslog' 'audit_log_start' 'ext4_mark_iloc_dirty' 'pipe_poll' 'may_open' 'sit_tunnel_xmit' 'mm_update_next_owner' 'n_tty_receive_buf_common' 'generic_file_read_iter' 'ext4_da_write_end' 'd_instantiate_new' 'copy_process' 'page_counter_try_charge' 'xas_find_marked' 'blk_mq_run_hw_queue' 'balance_dirty_pages' 'lruvec_lru_size' 'ext4_setattr' 'ktime_get_seconds' 'do_exit' 'taskstats_exit' '__snd_rawmidi_transmit_ack' 'find_get_pages_range_tag' 'dput' 'iput' 'wbt_issue' 'blk_mq_sched_dispatch_requests' 'timer_clear_idle' 'atime_needs_update' '__dentry_kill' 'inotify_handle_event' 'find_next_bit' 'ipip_tunnel_xmit' '__skb_try_recv_from_queue' '__tty_hangup' [ 313.202003][ T7586] ================================================================== [ 313.210153][ T7586] BUG: KCSAN: data-race in hrtimer_wakeup / schedule_hrtimeout_range_clock [ 313.218708][ T7586] [ 313.221017][ T7586] write to 0xffffc90001623848 of 8 bytes by interrupt on cpu 1: [ 313.228629][ T7586] hrtimer_wakeup+0x32/0x60 [ 313.233112][ T7586] __hrtimer_run_queues+0x274/0x5f0 [ 313.238299][ T7586] hrtimer_interrupt+0x22a/0x480 [ 313.243214][ T7586] smp_apic_timer_interrupt+0xdc/0x280 [ 313.248676][ T7586] apic_timer_interrupt+0xf/0x20 [ 313.253607][ T7586] native_safe_halt+0xe/0x10 [ 313.258211][ T7586] arch_cpu_idle+0xa/0x10 [ 313.262536][ T7586] default_idle_call+0x1e/0x40 [ 313.267305][ T7586] do_idle+0x1af/0x280 [ 313.271424][ T7586] cpu_startup_entry+0x1b/0x20 [ 313.276220][ T7586] start_secondary+0x168/0x1b0 [ 313.280991][ T7586] secondary_startup_64+0xa4/0xb0 [ 313.286021][ T7586] [ 313.288386][ T7586] read to 0xffffc90001623848 of 8 bytes by task 7586 on cpu 0: [ 313.295926][ T7586] schedule_hrtimeout_range_clock+0x109/0x1e0 [ 313.301993][ T7586] schedule_hrtimeout_range+0x34/0x50 [ 313.307369][ T7586] poll_schedule_timeout.constprop.0+0x75/0xc0 [ 313.313523][ T7586] do_select+0xd7f/0x1020 [ 313.317846][ T7586] core_sys_select+0x381/0x550 [ 313.322598][ T7586] do_pselect.constprop.0+0x11d/0x160 [ 313.327972][ T7586] __x64_sys_pselect6+0x12e/0x170 [ 313.333001][ T7586] do_syscall_64+0xcc/0x370 [ 313.337509][ T7586] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 313.343382][ T7586] [ 313.345693][ T7586] Reported by Kernel Concurrency Sanitizer on: [ 313.351855][ T7586] CPU: 0 PID: 7586 Comm: syz-fuzzer Not tainted 5.4.0-syzkaller #0 [ 313.359748][ T7586] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 313.369817][ T7586] ================================================================== [ 313.377969][ T7586] Kernel panic - not syncing: panic_on_warn set ... [ 313.384544][ T7586] CPU: 0 PID: 7586 Comm: syz-fuzzer Not tainted 5.4.0-syzkaller #0 [ 313.392414][ T7586] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 313.402891][ T7586] Call Trace: [ 313.406197][ T7586] dump_stack+0x11d/0x181 [ 313.410531][ T7586] panic+0x210/0x640 [ 313.414433][ T7586] ? vprintk_func+0x8d/0x140 [ 313.419016][ T7586] kcsan_report.cold+0xc/0xd [ 313.423604][ T7586] kcsan_setup_watchpoint+0x3fe/0x460 [ 313.428970][ T7586] __tsan_read8+0xc6/0x100 [ 313.433374][ T7586] schedule_hrtimeout_range_clock+0x109/0x1e0 [ 313.439456][ T7586] ? hrtimer_active+0x1a0/0x1a0 [ 313.444311][ T7586] schedule_hrtimeout_range+0x34/0x50 [ 313.449686][ T7586] poll_schedule_timeout.constprop.0+0x75/0xc0 [ 313.455844][ T7586] do_select+0xd7f/0x1020 [ 313.460170][ T7586] ? delay_tsc+0x8f/0xc0 [ 313.464406][ T7586] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 313.470116][ T7586] ? gup_pgd_range+0x5cb/0x1990 [ 313.474978][ T7586] ? __rcu_read_unlock+0x66/0x3c0 [ 313.479997][ T7586] ? __rcu_read_unlock+0x66/0x3c0 [ 313.485025][ T7586] ? rb_erase+0x2aa/0x990 [ 313.489349][ T7586] ? __read_once_size.constprop.0+0x12/0x20 [ 313.495260][ T7586] ? timerqueue_del+0xa1/0x100 [ 313.500041][ T7586] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 313.506285][ T7586] ? __remove_hrtimer+0x7a/0x130 [ 313.511272][ T7586] ? _raw_spin_unlock_irqrestore+0x70/0x80 [ 313.517085][ T7586] ? hrtimer_try_to_cancel+0x57/0x260 [ 313.522455][ T7586] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 313.528697][ T7586] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 313.534961][ T7586] ? hrtimer_cancel+0x3b/0x50 [ 313.539651][ T7586] ? futex_wait+0x33f/0x3f0 [ 313.544195][ T7586] ? __rcu_read_unlock+0x66/0x3c0 [ 313.549346][ T7586] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 313.555245][ T7586] core_sys_select+0x381/0x550 [ 313.560139][ T7586] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 313.566025][ T7586] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 313.571746][ T7586] ? _copy_to_user+0x84/0xb0 [ 313.576390][ T7586] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 313.582322][ T7586] ? __read_once_size+0x5a/0xe0 [ 313.587169][ T7586] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 313.593455][ T7586] ? ktime_get_ts64+0x286/0x2c0 [ 313.598307][ T7586] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 313.604030][ T7586] ? timespec64_add_safe+0xae/0xd0 [ 313.609150][ T7586] do_pselect.constprop.0+0x11d/0x160 [ 313.614534][ T7586] __x64_sys_pselect6+0x12e/0x170 [ 313.619551][ T7586] ? switch_fpu_return+0x11f/0x250 [ 313.624665][ T7586] do_syscall_64+0xcc/0x370 [ 313.629192][ T7586] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 313.635084][ T7586] RIP: 0033:0x45ac23 [ 313.638968][ T7586] 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 [ 313.658583][ T7586] RSP: 002b:000000c42004ff08 EFLAGS: 00000202 ORIG_RAX: 000000000000010e [ 313.667013][ T7586] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 000000000045ac23 [ 313.674993][ T7586] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 313.682980][ T7586] RBP: 000000c42004ff18 R08: 000000c42004ff08 R09: 0000000000000000 [ 313.690941][ T7586] R10: 0000000000000000 R11: 0000000000000202 R12: 000000000042f0a0 [ 313.698900][ T7586] R13: 00000000000000f1 R14: 0000000000000011 R15: 0000000000000000 [ 313.708158][ T7586] Kernel Offset: disabled [ 313.712482][ T7586] Rebooting in 86400 seconds..