[ 42.378726][ T25] audit: type=1800 audit(1571042945.696:27): pid=7074 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2469 res=0 [ 42.398994][ T25] audit: type=1800 audit(1571042945.696:28): pid=7074 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. [ 43.271240][ T25] audit: type=1800 audit(1571042946.636:29): pid=7074 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 [ 43.291365][ T25] audit: type=1800 audit(1571042946.636:30): pid=7074 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 '10.128.0.97' (ECDSA) to the list of known hosts. 2019/10/14 08:49:13 fuzzer started 2019/10/14 08:49:15 dialing manager at 10.128.0.105:40973 2019/10/14 08:49:15 syscalls: 2523 2019/10/14 08:49:15 code coverage: enabled 2019/10/14 08:49:15 comparison tracing: enabled 2019/10/14 08:49:15 extra coverage: extra coverage is not supported by the kernel 2019/10/14 08:49:15 setuid sandbox: enabled 2019/10/14 08:49:15 namespace sandbox: enabled 2019/10/14 08:49:15 Android sandbox: /sys/fs/selinux/policy does not exist 2019/10/14 08:49:15 fault injection: enabled 2019/10/14 08:49:15 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/10/14 08:49:15 net packet injection: enabled 2019/10/14 08:49:15 net device setup: enabled 2019/10/14 08:49:15 concurrency sanitizer: enabled syzkaller login: [ 52.205191][ T0] ================================================================== [ 52.213305][ T0] BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64 [ 52.222236][ T0] [ 52.224556][ T0] write to 0xffffffff8603f008 of 8 bytes by interrupt on cpu 1: [ 52.232196][ T0] tick_do_update_jiffies64+0x105/0x260 [ 52.237717][ T0] tick_sched_do_timer+0xd4/0xe0 [ 52.242627][ T0] tick_sched_timer+0x43/0xe0 [ 52.247290][ T0] __hrtimer_run_queues+0x288/0x600 [ 52.252470][ T0] hrtimer_interrupt+0x22a/0x480 [ 52.257393][ T0] smp_apic_timer_interrupt+0xdc/0x280 [ 52.262822][ T0] apic_timer_interrupt+0xf/0x20 [ 52.267749][ T0] do_page_fault+0x54/0x233 [ 52.272225][ T0] page_fault+0x34/0x40 [ 52.276347][ T0] [ 52.278655][ T0] read to 0xffffffff8603f008 of 8 bytes by task 0 on cpu 0: [ 52.285912][ T0] tick_do_update_jiffies64+0x2b/0x260 [ 52.291344][ T0] __tick_nohz_idle_restart_tick+0x31/0x1b0 [ 52.297211][ T0] tick_nohz_idle_exit+0x1af/0x1e0 [ 52.302294][ T0] do_idle+0xb0/0x2c0 [ 52.306248][ T0] cpu_startup_entry+0x1b/0x20 [ 52.310984][ T0] rest_init+0xec/0xf6 [ 52.315032][ T0] arch_call_rest_init+0x17/0x37 [ 52.319945][ T0] start_kernel+0x83e/0x864 [ 52.324432][ T0] x86_64_start_reservations+0x29/0x2b [ 52.329865][ T0] x86_64_start_kernel+0x72/0x76 [ 52.335218][ T0] secondary_startup_64+0xa4/0xb0 [ 52.340209][ T0] [ 52.342509][ T0] Reported by Kernel Concurrency Sanitizer on: [ 52.348649][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.3.0+ #0 [ 52.355381][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.365408][ T0] ================================================================== [ 52.373527][ T0] Kernel panic - not syncing: panic_on_warn set ... [ 52.380086][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.3.0+ #0 [ 52.386817][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.396852][ T0] Call Trace: [ 52.400121][ T0] dump_stack+0xf5/0x159 [ 52.404355][ T0] panic+0x209/0x639 [ 52.408234][ T0] ? x86_64_start_reservations+0x29/0x2b [ 52.413878][ T0] ? vprintk_func+0x8d/0x140 [ 52.418449][ T0] kcsan_report.cold+0xc/0x1b [ 52.423106][ T0] __kcsan_setup_watchpoint+0x3ee/0x510 [ 52.429759][ T0] __tsan_read8+0x2c/0x30 [ 52.434154][ T0] tick_do_update_jiffies64+0x2b/0x260 [ 52.439591][ T0] __tick_nohz_idle_restart_tick+0x31/0x1b0 [ 52.445465][ T0] tick_nohz_idle_exit+0x1af/0x1e0 [ 52.450554][ T0] do_idle+0xb0/0x2c0 [ 52.454514][ T0] cpu_startup_entry+0x1b/0x20 [ 52.459258][ T0] rest_init+0xec/0xf6 [ 52.463307][ T0] ? trace_event_define_fields_vector_free_moved+0xce/0xce [ 52.470479][ T0] arch_call_rest_init+0x17/0x37 [ 52.475404][ T0] start_kernel+0x83e/0x864 [ 52.479904][ T0] x86_64_start_reservations+0x29/0x2b [ 52.485355][ T0] x86_64_start_kernel+0x72/0x76 [ 52.490269][ T0] secondary_startup_64+0xa4/0xb0 [ 52.496587][ T0] Kernel Offset: disabled [ 52.500906][ T0] Rebooting in 86400 seconds..