[   38.190177][   T26] audit: type=1800 audit(1571145523.177:21): pid=7208 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2452 res=0
[   38.238182][   T26] audit: type=1800 audit(1571145523.177:22): pid=7208 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="motd" dev="sda1" ino=2480 res=0
[   38.260822][   T26] audit: type=1800 audit(1571145523.177:23): pid=7208 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rsyslog" dev="sda1" ino=2475 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 '10.128.1.11' (ECDSA) to the list of known hosts.
2019/10/15 13:18:54 fuzzer started
2019/10/15 13:18:55 dialing manager at 10.128.0.105:38903
2019/10/15 13:18:55 syscalls: 2523
2019/10/15 13:18:55 code coverage: enabled
2019/10/15 13:18:55 comparison tracing: enabled
2019/10/15 13:18:55 extra coverage: extra coverage is not supported by the kernel
2019/10/15 13:18:55 setuid sandbox: enabled
2019/10/15 13:18:55 namespace sandbox: enabled
2019/10/15 13:18:55 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/15 13:18:55 fault injection: enabled
2019/10/15 13:18:55 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/15 13:18:55 net packet injection: enabled
2019/10/15 13:18:55 net device setup: enabled
2019/10/15 13:18:55 concurrency sanitizer: enabled
syzkaller login: [   51.398675][    T0] ==================================================================
[   51.406894][    T0] BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_nohz_next_event
[   51.415492][    T0] 
[   51.417845][    T0] read to 0xffffffff85caf310 of 4 bytes by task 0 on cpu 1:
[   51.425197][    T0]  tick_nohz_next_event+0x1a4/0x380
[   51.430453][    T0]  tick_nohz_idle_stop_tick+0x3c2/0x670
[   51.436013][    T0]  do_idle+0x1e0/0x2c0
[   51.440248][    T0]  cpu_startup_entry+0x1b/0x20
[   51.444995][    T0]  start_secondary+0x207/0x260
[   51.449858][    T0]  secondary_startup_64+0xa4/0xb0
[   51.454916][    T0] 
[   51.457224][    T0] write to 0xffffffff85caf310 of 4 bytes by task 0 on cpu 0:
[   51.464618][    T0]  tick_nohz_idle_stop_tick+0x525/0x670
[   51.470140][    T0]  do_idle+0x1e0/0x2c0
[   51.474271][    T0]  cpu_startup_entry+0x1b/0x20
[   51.479043][    T0]  rest_init+0xec/0xf6
[   51.483088][    T0]  arch_call_rest_init+0x17/0x37
[   51.488000][    T0]  start_kernel+0x83e/0x864
[   51.492479][    T0]  x86_64_start_reservations+0x29/0x2b
[   51.497916][    T0]  x86_64_start_kernel+0x72/0x76
[   51.502843][    T0]  secondary_startup_64+0xa4/0xb0
[   51.507850][    T0] 
[   51.510155][    T0] Reported by Kernel Concurrency Sanitizer on:
[   51.516285][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.3.0+ #0
[   51.523016][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   51.533049][    T0] ==================================================================
[   51.541088][    T0] Kernel panic - not syncing: panic_on_warn set ...
[   51.547653][    T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.3.0+ #0
[   51.554388][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   51.564429][    T0] Call Trace:
[   51.567700][    T0]  dump_stack+0xf5/0x159
[   51.571921][    T0]  panic+0x209/0x639
[   51.575824][    T0]  ? secondary_startup_64+0xa4/0xb0
[   51.580999][    T0]  ? vprintk_func+0x8d/0x140
[   51.585572][    T0]  kcsan_report.cold+0xc/0x1b
[   51.590243][    T0]  __kcsan_setup_watchpoint+0x3ee/0x510
[   51.595766][    T0]  __tsan_write4+0x32/0x40
[   51.600169][    T0]  tick_nohz_idle_stop_tick+0x525/0x670
[   51.605695][    T0]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   51.611914][    T0]  do_idle+0x1e0/0x2c0
[   51.615964][    T0]  cpu_startup_entry+0x1b/0x20
[   51.620701][    T0]  rest_init+0xec/0xf6
[   51.624833][    T0]  ? trace_event_define_fields_vector_free_moved+0xce/0xce
[   51.632003][    T0]  arch_call_rest_init+0x17/0x37
[   51.636920][    T0]  start_kernel+0x83e/0x864
[   51.641413][    T0]  x86_64_start_reservations+0x29/0x2b
[   51.646851][    T0]  x86_64_start_kernel+0x72/0x76
[   51.651765][    T0]  secondary_startup_64+0xa4/0xb0
[   51.658063][    T0] Kernel Offset: disabled
[   51.662392][    T0] Rebooting in 86400 seconds..