[info] Using makefile-style concurrent boot in runlevel 2.
[   42.430241][   T26] audit: type=1800 audit(1574089097.236:21): pid=7485 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2452 res=0
[   42.474221][   T26] audit: type=1800 audit(1574089097.236:22): pid=7485 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 '10.128.1.57' (ECDSA) to the list of known hosts.
2019/11/18 14:58:26 fuzzer started
2019/11/18 14:58:27 dialing manager at 10.128.0.105:33487
2019/11/18 14:58:28 syscalls: 2566
2019/11/18 14:58:28 code coverage: enabled
2019/11/18 14:58:28 comparison tracing: enabled
2019/11/18 14:58:28 extra coverage: extra coverage is not supported by the kernel
2019/11/18 14:58:28 setuid sandbox: enabled
2019/11/18 14:58:28 namespace sandbox: enabled
2019/11/18 14:58:28 Android sandbox: /sys/fs/selinux/policy does not exist
2019/11/18 14:58:28 fault injection: enabled
2019/11/18 14:58:28 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/11/18 14:58:28 net packet injection: enabled
2019/11/18 14:58:28 net device setup: enabled
2019/11/18 14:58:28 concurrency sanitizer: enabled
2019/11/18 14:58:28 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [   56.706983][    T0] ==================================================================
[   56.715184][    T0] BUG: KCSAN: data-race in add_timer_on / timer_clear_idle
[   56.722367][    T0] 
[   56.724707][    T0] read to 0xffff88812bf1b6e4 of 1 bytes by interrupt on cpu 0:
[   56.732248][    T0]  add_timer_on+0x20e/0x2d0
[   56.736767][    T0]  clocksource_watchdog+0x63f/0x760
[   56.741956][    T0]  call_timer_fn+0x5f/0x2f0
[   56.746464][    T0]  run_timer_softirq+0xc0c/0xcd0
[   56.751398][    T0]  __do_softirq+0x115/0x33f
[   56.756889][    T0]  irq_exit+0xbb/0xe0
[   56.761128][    T0]  smp_apic_timer_interrupt+0xe6/0x280
[   56.766578][    T0]  apic_timer_interrupt+0xf/0x20
[   56.771505][    T0]  _raw_spin_unlock_irqrestore+0x51/0x80
[   56.777136][    T0]  debugfs_write+0x1b8/0x2d0
[   56.781750][    T0]  full_proxy_write+0xbd/0x100
[   56.786710][    T0]  __vfs_write+0x67/0xc0
[   56.790941][    T0]  vfs_write+0x18a/0x390
[   56.795173][    T0]  ksys_write+0xd5/0x1b0
[   56.799782][    T0]  __x64_sys_write+0x4c/0x60
[   56.804367][    T0]  do_syscall_64+0xcc/0x370
[   56.808959][    T0]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   56.817010][    T0] 
[   56.820320][    T0] write to 0xffff88812bf1b6e4 of 1 bytes by task 0 on cpu 1:
[   56.827686][    T0]  timer_clear_idle+0x42/0x50
[   56.832377][    T0]  __tick_nohz_idle_restart_tick+0x36/0x1b0
[   56.838334][    T0]  tick_nohz_idle_exit+0x1af/0x1e0
[   56.843437][    T0]  do_idle+0xb1/0x280
[   56.847412][    T0]  cpu_startup_entry+0x1b/0x20
[   56.852187][    T0]  start_secondary+0x168/0x1b0
[   56.856957][    T0]  secondary_startup_64+0xa4/0xb0
[   56.862229][    T0] 
[   56.864554][    T0] Reported by Kernel Concurrency Sanitizer on:
[   56.870796][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.4.0-rc7+ #0
[   56.877975][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   56.888027][    T0] ==================================================================
[   56.896086][    T0] Kernel panic - not syncing: panic_on_warn set ...
[   56.902664][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.4.0-rc7+ #0
[   56.909755][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   56.919798][    T0] Call Trace:
[   56.923174][    T0]  dump_stack+0x11d/0x181
[   56.927510][    T0]  panic+0x210/0x640
[   56.931405][    T0]  ? vprintk_func+0x8d/0x140
[   56.936000][    T0]  kcsan_report.cold+0xc/0xd
[   56.940598][    T0]  kcsan_setup_watchpoint+0x3fe/0x460
[   56.945978][    T0]  __tsan_unaligned_write1+0xc0/0x100
[   56.952076][    T0]  timer_clear_idle+0x42/0x50
[   56.956837][    T0]  __tick_nohz_idle_restart_tick+0x36/0x1b0
[   56.963166][    T0]  tick_nohz_idle_exit+0x1af/0x1e0
[   56.968452][    T0]  do_idle+0xb1/0x280
[   56.972428][    T0]  ? complete+0x44/0x50
[   56.976578][    T0]  cpu_startup_entry+0x1b/0x20
[   56.981333][    T0]  start_secondary+0x168/0x1b0
[   56.986093][    T0]  secondary_startup_64+0xa4/0xb0
[   57.161567][    T0] Kernel Offset: disabled
[   57.165926][    T0] Rebooting in 86400 seconds..