[   32.564257][   T25] audit: type=1800 audit(1570391457.752:27): pid=6848 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2469 res=0
[   32.602384][   T25] audit: type=1800 audit(1570391457.832:28): pid=6848 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.
[   33.029175][   T25] audit: type=1800 audit(1570391458.262:29): pid=6848 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
[   33.049146][   T25] audit: type=1800 audit(1570391458.262:30): pid=6848 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 '10.128.10.11' (ECDSA) to the list of known hosts.
2019/10/06 19:51:05 fuzzer started
2019/10/06 19:51:06 dialing manager at 10.128.0.105:35709
2019/10/06 19:51:06 syscalls: 2523
2019/10/06 19:51:06 code coverage: enabled
2019/10/06 19:51:06 comparison tracing: enabled
2019/10/06 19:51:06 extra coverage: extra coverage is not supported by the kernel
2019/10/06 19:51:06 setuid sandbox: enabled
2019/10/06 19:51:06 namespace sandbox: enabled
2019/10/06 19:51:06 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/06 19:51:06 fault injection: enabled
2019/10/06 19:51:06 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/06 19:51:06 net packet injection: enabled
2019/10/06 19:51:06 net device setup: enabled
2019/10/06 19:51:06 concurrency sanitizer: enabled
syzkaller login: [   41.573081][    T0] ==================================================================
[   41.581238][    T0] BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_nohz_next_event
[   41.589827][    T0] 
[   41.592139][    T0] write to 0xffffffff85caf2d0 of 4 bytes by task 0 on cpu 0:
[   41.599482][    T0]  tick_nohz_idle_stop_tick+0x525/0x670
[   41.604993][    T0]  do_idle+0x1e0/0x2c0
[   41.609028][    T0]  cpu_startup_entry+0x1b/0x20
[   41.613762][    T0]  rest_init+0xec/0xf6
[   41.617815][    T0]  arch_call_rest_init+0x17/0x37
[   41.622722][    T0]  start_kernel+0x83e/0x864
[   41.627197][    T0]  x86_64_start_reservations+0x29/0x2b
[   41.632628][    T0]  x86_64_start_kernel+0x72/0x76
[   41.637537][    T0]  secondary_startup_64+0xa4/0xb0
[   41.642524][    T0] 
[   41.644848][    T0] read to 0xffffffff85caf2d0 of 4 bytes by task 0 on cpu 1:
[   41.652099][    T0]  tick_nohz_next_event+0x1a4/0x380
[   41.657276][    T0]  tick_nohz_idle_stop_tick+0x3c2/0x670
[   41.662789][    T0]  do_idle+0x1e0/0x2c0
[   41.666828][    T0]  cpu_startup_entry+0x1b/0x20
[   41.671561][    T0]  start_secondary+0x207/0x260
[   41.676291][    T0]  secondary_startup_64+0xa4/0xb0
[   41.681290][    T0] 
[   41.683583][    T0] Reported by Kernel Concurrency Sanitizer on:
[   41.689724][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.3.0+ #0
[   41.696449][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   41.706486][    T0] ==================================================================
[   41.714527][    T0] Kernel panic - not syncing: panic_on_warn set ...
[   41.721080][    T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.3.0+ #0
[   41.727819][    T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   41.737841][    T0] Call Trace:
[   41.741116][    T0]  dump_stack+0xf5/0x159
[   41.745333][    T0]  panic+0x209/0x639
[   41.749212][    T0]  ? vprintk_func+0x8d/0x140
[   41.753784][    T0]  kcsan_report.cold+0x57/0xeb
[   41.758521][    T0]  __kcsan_setup_watchpoint+0x342/0x500
[   41.764034][    T0]  __tsan_read4+0x2c/0x30
[   41.768336][    T0]  tick_nohz_next_event+0x1a4/0x380
[   41.773518][    T0]  tick_nohz_idle_stop_tick+0x3c2/0x670
[   41.779043][    T0]  ? __tsan_read4+0x2c/0x30
[   41.783517][    T0]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   41.789727][    T0]  do_idle+0x1e0/0x2c0
[   41.793766][    T0]  ? complete+0x44/0x50
[   41.797904][    T0]  cpu_startup_entry+0x1b/0x20
[   41.802660][    T0]  start_secondary+0x207/0x260
[   41.807407][    T0]  secondary_startup_64+0xa4/0xb0
[   41.813647][    T0] Kernel Offset: disabled
[   41.817964][    T0] Rebooting in 86400 seconds..