[info] Using makefile-style concurrent boot in runlevel 2. [ 42.257893][ T26] audit: type=1800 audit(1575029872.982:21): pid=7535 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2452 res=0 [ 42.308313][ T26] audit: type=1800 audit(1575029872.992:22): pid=7535 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 '10.128.0.233' (ECDSA) to the list of known hosts. 2019/11/29 12:18:03 fuzzer started 2019/11/29 12:18:05 dialing manager at 10.128.0.105:40749 2019/11/29 12:18:05 syscalls: 2589 2019/11/29 12:18:05 code coverage: enabled 2019/11/29 12:18:05 comparison tracing: enabled 2019/11/29 12:18:05 extra coverage: extra coverage is not supported by the kernel 2019/11/29 12:18:05 setuid sandbox: enabled 2019/11/29 12:18:05 namespace sandbox: enabled 2019/11/29 12:18:05 Android sandbox: /sys/fs/selinux/policy does not exist 2019/11/29 12:18:05 fault injection: enabled 2019/11/29 12:18:05 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/11/29 12:18:05 net packet injection: enabled 2019/11/29 12:18:05 net device setup: enabled 2019/11/29 12:18:05 concurrency sanitizer: enabled 2019/11/29 12:18:05 devlink PCI setup: PCI device 0000:00:10.0 is not available syzkaller login: [ 57.418201][ T7697] KCSAN: could not find function: 'poll_schedule_timeout' 2019/11/29 12:18:12 adding functions to KCSAN blacklist: 'find_next_bit' 'generic_fillattr' 'add_timer' 'find_get_pages_range_tag' 'copy_process' 'xas_clear_mark' 'list_lru_count_one' 'tick_sched_do_timer' 'blk_mq_dispatch_rq_list' 'blk_mq_get_request' 'snd_timer_pause' 'ext4_free_inode' 'ktime_get_real_seconds' 'vm_area_dup' 'wbt_wait' 'blk_mq_sched_dispatch_requests' 'mod_timer' 'poll_schedule_timeout' 'kauditd_thread' 'run_timer_softirq' 'do_nanosleep' 'taskstats_exit' 'wbt_issue' 'xas_find_marked' 'tomoyo_supervisor' 'generic_write_end' 'rcu_gp_fqs_check_wake' 'sit_tunnel_xmit' 'lruvec_lru_size' '__hrtimer_run_queues' 'ext4_has_free_clusters' 'echo_char' 'pipe_poll' 'ep_poll' 'tick_do_update_jiffies64' '__ext4_new_inode' 'audit_log_start' 'tick_nohz_idle_stop_tick' 'tcp_add_backlog' '__rb_erase_color' 'ext4_nonda_switch' [ 117.719819][ C0] ================================================================== [ 117.728006][ C0] BUG: KCSAN: data-race in hrtimer_wakeup / schedule_hrtimeout_range_clock [ 117.736581][ C0] [ 117.738925][ C0] read to 0xffffc900015cb848 of 8 bytes by task 7682 on cpu 1: [ 117.746470][ C0] schedule_hrtimeout_range_clock+0x109/0x1e0 [ 117.754930][ C0] schedule_hrtimeout_range+0x34/0x50 [ 117.760288][ C0] poll_schedule_timeout.constprop.0+0x75/0xc0 [ 117.766593][ C0] do_select+0xd7f/0x1020 [ 117.770898][ C0] core_sys_select+0x381/0x550 [ 117.775650][ C0] do_pselect.constprop.0+0x11d/0x160 [ 117.781001][ C0] __x64_sys_pselect6+0x12e/0x170 [ 117.786016][ C0] do_syscall_64+0xcc/0x370 [ 117.790500][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 117.796372][ C0] [ 117.798700][ C0] write to 0xffffc900015cb848 of 8 bytes by interrupt on cpu 0: [ 117.806500][ C0] hrtimer_wakeup+0x32/0x60 [ 117.810984][ C0] __hrtimer_run_queues+0x274/0x5f0 [ 117.816184][ C0] hrtimer_interrupt+0x22a/0x480 [ 117.821109][ C0] smp_apic_timer_interrupt+0xdc/0x280 [ 117.826563][ C0] apic_timer_interrupt+0xf/0x20 [ 117.831482][ C0] active_load_balance_cpu_stop+0x91/0x2b0 [ 117.837292][ C0] cpu_stopper_thread+0x167/0x290 [ 117.842290][ C0] smpboot_thread_fn+0x37d/0x4a0 [ 117.847202][ C0] kthread+0x1d4/0x200 [ 117.851258][ C0] ret_from_fork+0x1f/0x30 [ 117.855647][ C0] [ 117.857949][ C0] Reported by Kernel Concurrency Sanitizer on: [ 117.864080][ C0] CPU: 0 PID: 11 Comm: migration/0 Not tainted 5.4.0-syzkaller #0 [ 117.871874][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 117.881911][ C0] ================================================================== [ 117.889964][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 117.896531][ C0] CPU: 0 PID: 11 Comm: migration/0 Not tainted 5.4.0-syzkaller #0 [ 117.904315][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 117.914354][ C0] Call Trace: [ 117.917616][ C0] [ 117.920455][ C0] dump_stack+0x11d/0x181 [ 117.924765][ C0] panic+0x210/0x640 [ 117.928673][ C0] ? vprintk_func+0x8d/0x140 [ 117.933942][ C0] kcsan_report.cold+0xc/0xd [ 117.938515][ C0] kcsan_setup_watchpoint+0x3fe/0x460 [ 117.943867][ C0] __tsan_unaligned_write8+0xc4/0x100 [ 117.949229][ C0] hrtimer_wakeup+0x32/0x60 [ 117.953722][ C0] __hrtimer_run_queues+0x274/0x5f0 [ 117.958922][ C0] ? hrtimer_active+0x1a0/0x1a0 [ 117.964798][ C0] hrtimer_interrupt+0x22a/0x480 [ 117.969721][ C0] ? sched_clock+0x13/0x20 [ 117.974118][ C0] smp_apic_timer_interrupt+0xdc/0x280 [ 117.979555][ C0] apic_timer_interrupt+0xf/0x20 [ 117.984473][ C0] [ 117.987395][ C0] RIP: 0010:active_load_balance_cpu_stop+0x91/0x2b0 [ 117.993966][ C0] Code: 4d 41 c7 84 24 18 0a 00 00 00 00 00 00 4c 89 e7 e8 14 98 66 03 48 83 3d bc 1f 72 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 [ 118.013634][ C0] RSP: 0018:ffffc90000cc3db8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 [ 118.022027][ C0] RAX: 0000000080000001 RBX: ffff88812b33b000 RCX: 0000000000000000 [ 118.030124][ C0] RDX: 0000000000000002 RSI: 00000000000000fd RDI: 00000000ffffffff [ 118.038260][ C0] RBP: ffffc90000cc3e60 R08: 0000000000000000 R09: 0000ffff85a56298 [ 118.046249][ C0] R10: 0000000000000000 R11: 0000ffff85a5629f R12: ffff88812be2a3c0 [ 118.054398][ C0] R13: ffff88812bf2a3c0 R14: ffff888122c86040 R15: 000000000002a3c0 [ 118.062393][ C0] ? active_load_balance_cpu_stop+0x25a/0x2b0 [ 118.068449][ C0] cpu_stopper_thread+0x167/0x290 [ 118.073467][ C0] ? can_migrate_task+0x3e0/0x3e0 [ 118.078479][ C0] ? cpu_stop_create+0x60/0x60 [ 118.083220][ C0] smpboot_thread_fn+0x37d/0x4a0 [ 118.088144][ C0] kthread+0x1d4/0x200 [ 118.092214][ C0] ? constant_test_bit.constprop.0+0x30/0x30 [ 118.098169][ C0] ? kthread_stop+0x2d0/0x2d0 [ 118.102825][ C0] ret_from_fork+0x1f/0x30 [ 118.108796][ C0] Kernel Offset: disabled [ 118.113123][ C0] Rebooting in 86400 seconds..