[ 54.591771][ T27] audit: type=1800 audit(1580944027.286:27): pid=7889 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2469 res=0
[ 54.612715][ T27] audit: type=1800 audit(1580944027.286:28): pid=7889 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[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[ 55.410812][ T27] audit: type=1800 audit(1580944028.166:29): pid=7889 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
[ 55.431160][ T27] audit: type=1800 audit(1580944028.166:30): pid=7889 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 '10.128.10.2' (ECDSA) to the list of known hosts.
2020/02/05 23:07:19 fuzzer started
2020/02/05 23:07:21 dialing manager at 10.128.0.105:44419
2020/02/05 23:07:22 syscalls: 2904
2020/02/05 23:07:22 code coverage: enabled
2020/02/05 23:07:22 comparison tracing: enabled
2020/02/05 23:07:22 extra coverage: enabled
2020/02/05 23:07:22 setuid sandbox: enabled
2020/02/05 23:07:22 namespace sandbox: enabled
2020/02/05 23:07:22 Android sandbox: /sys/fs/selinux/policy does not exist
2020/02/05 23:07:22 fault injection: enabled
2020/02/05 23:07:22 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/02/05 23:07:22 net packet injection: enabled
2020/02/05 23:07:22 net device setup: enabled
2020/02/05 23:07:22 concurrency sanitizer: enabled
2020/02/05 23:07:22 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 72.239678][ T0] ==================================================================
[ 72.247837][ T0] BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64
[ 72.256757][ T0]
[ 72.259089][ T0] write to 0xffffffff8624c7c8 of 8 bytes by interrupt on cpu 1:
[ 72.266816][ T0] tick_do_update_jiffies64+0x100/0x250
[ 72.272367][ T0] tick_sched_do_timer+0xd4/0xe0
[ 72.277310][ T0] tick_sched_timer+0x43/0xe0
[ 72.281993][ T0] __hrtimer_run_queues+0x274/0x5f0
[ 72.287187][ T0] hrtimer_interrupt+0x22a/0x480
[ 72.292118][ T0] smp_apic_timer_interrupt+0xdc/0x280
[ 72.297578][ T0] apic_timer_interrupt+0xf/0x20
[ 72.302521][ T0] kcsan_setup_watchpoint+0x1d4/0x460
[ 72.307901][ T0] __tsan_read1+0xc2/0x100
[ 72.312331][ T0] kallsyms_expand_symbol.constprop.0+0x70/0x160
[ 72.318660][ T0] kallsyms_lookup_name+0x7f/0x120
[ 72.323773][ T0] debugfs_write+0x14b/0x2d0
[ 72.328404][ T0] full_proxy_write+0xbd/0x100
[ 72.333201][ T0] __vfs_write+0x67/0xc0
[ 72.337455][ T0] vfs_write+0x18a/0x390
[ 72.341697][ T0] ksys_write+0xd5/0x1b0
[ 72.345933][ T0] __x64_sys_write+0x4c/0x60
[ 72.350520][ T0] do_syscall_64+0xcc/0x3a0
[ 72.355061][ T0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 72.360934][ T0]
[ 72.363268][ T0] read to 0xffffffff8624c7c8 of 8 bytes by task 0 on cpu 0:
[ 72.370553][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 72.376025][ T0] tick_irq_enter+0x139/0x1c0
[ 72.380696][ T0] irq_enter+0x4f/0x60
[ 72.384766][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 72.390225][ T0] apic_timer_interrupt+0xf/0x20
[ 72.395163][ T0] native_safe_halt+0xe/0x10
[ 72.399759][ T0] arch_cpu_idle+0xa/0x10
[ 72.404085][ T0] default_idle_call+0x1e/0x40
[ 72.409075][ T0] do_idle+0x1c2/0x290
[ 72.413147][ T0] cpu_startup_entry+0x1b/0x20
[ 72.417944][ T0] rest_init+0xec/0xf6
[ 72.422022][ T0] arch_call_rest_init+0x17/0x37
[ 72.426963][ T0] start_kernel+0x838/0x85e
[ 72.431494][ T0] x86_64_start_reservations+0x29/0x2b
[ 72.436957][ T0] x86_64_start_kernel+0x72/0x76
[ 72.442023][ T0] secondary_startup_64+0xa4/0xb0
[ 72.447036][ T0]
[ 72.449494][ T0] Reported by Kernel Concurrency Sanitizer on:
[ 72.455661][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 72.463543][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 72.473720][ T0] ==================================================================
[ 72.481794][ T0] Kernel panic - not syncing: panic_on_warn set ...
[ 72.488386][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 72.496274][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 72.506411][ T0] Call Trace:
[ 72.509690][ T0]
[ 72.512537][ T0] dump_stack+0x11d/0x181
[ 72.516869][ T0] panic+0x210/0x640
[ 72.520772][ T0] ? vprintk_func+0x8d/0x140
[ 72.525411][ T0] kcsan_report.cold+0xc/0xd
[ 72.530002][ T0] kcsan_setup_watchpoint+0x3fe/0x460
[ 72.535386][ T0] __tsan_read8+0xc6/0x100
[ 72.539807][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 72.545271][ T0] tick_irq_enter+0x139/0x1c0
[ 72.550183][ T0] irq_enter+0x4f/0x60
[ 72.554257][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 72.559731][ T0] apic_timer_interrupt+0xf/0x20
[ 72.564655][ T0]
[ 72.567598][ T0] RIP: 0010:native_safe_halt+0xe/0x10
[ 72.572985][ T0] Code: cc cc cc cc cc cc cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d 4c e6 59 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 3c e6 59 00 fb f4 cc 55 48 89 e5 41 55 41 54 53 e8 d2 57 91 fc e8 fd da ab fd 0f
[ 72.592872][ T0] RSP: 0018:ffffffff85c03df8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 72.601281][ T0] RAX: 0000000000000000 RBX: ffffffff85c2b780 RCX: ffffffff82546c55
[ 72.609250][ T0] RDX: 0000000000000000 RSI: ffffffff82546c5e RDI: 0000000000000005
[ 72.617226][ T0] RBP: ffffffff85c03e18 R08: ffffffff85c2b780 R09: 0000ffff85a2d160
[ 72.625206][ T0] R10: 0000ffff85c03e08 R11: 0000ffff85a2d167 R12: 0000000000000000
[ 72.633178][ T0] R13: ffffffff85c2b780 R14: 0000000000000000 R15: 0000000000000000
[ 72.641166][ T0] ? debug_smp_processor_id+0x35/0x137
[ 72.646631][ T0] ? debug_smp_processor_id+0x3e/0x137
[ 72.652098][ T0] ? default_idle+0x26/0x180
[ 72.656704][ T0] arch_cpu_idle+0xa/0x10
[ 72.661041][ T0] default_idle_call+0x1e/0x40
[ 72.665800][ T0] do_idle+0x1c2/0x290
[ 72.669939][ T0] cpu_startup_entry+0x1b/0x20
[ 72.674706][ T0] rest_init+0xec/0xf6
[ 72.678792][ T0] ? trace_event_define_fields_vector_free_moved+0xb4/0xb4
[ 72.686019][ T0] arch_call_rest_init+0x17/0x37
[ 72.690998][ T0] start_kernel+0x838/0x85e
[ 72.695513][ T0] x86_64_start_reservations+0x29/0x2b
[ 72.700972][ T0] x86_64_start_kernel+0x72/0x76
[ 72.705923][ T0] secondary_startup_64+0xa4/0xb0
[ 72.712425][ T0] Kernel Offset: disabled
[ 72.716755][ T0] Rebooting in 86400 seconds..