[[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2.
[ 45.058420][ T26] audit: type=1800 audit(1573700576.153:21): pid=7426 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2452 res=0
[ 45.097870][ T26] audit: type=1800 audit(1573700576.153:22): pid=7426 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[1G[[32m ok [39;49m8[?25h[?0c.
[....] 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.
Debian GNU/Linux 7 syzkaller ttyS0
Warning: Permanently added '10.128.0.198' (ECDSA) to the list of known hosts.
2019/11/14 03:03:05 fuzzer started
2019/11/14 03:03:07 dialing manager at 10.128.0.105:45453
2019/11/14 03:03:07 syscalls: 2566
2019/11/14 03:03:07 code coverage: enabled
2019/11/14 03:03:07 comparison tracing: enabled
2019/11/14 03:03:07 extra coverage: extra coverage is not supported by the kernel
2019/11/14 03:03:07 setuid sandbox: enabled
2019/11/14 03:03:07 namespace sandbox: enabled
2019/11/14 03:03:07 Android sandbox: /sys/fs/selinux/policy does not exist
2019/11/14 03:03:07 fault injection: enabled
2019/11/14 03:03:07 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/11/14 03:03:07 net packet injection: enabled
2019/11/14 03:03:07 net device setup: enabled
2019/11/14 03:03:07 concurrency sanitizer: enabled
2019/11/14 03:03:07 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 67.062236][ T7596] KCSAN: could not find function: 'poll_schedule_timeout'
[ 68.343158][ T0] ==================================================================
[ 68.351313][ T0] BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64
[ 68.360357][ T0]
[ 68.363594][ T0] write to 0xffffffff86046008 of 8 bytes by interrupt on cpu 1:
[ 68.371675][ T0] tick_do_update_jiffies64+0x100/0x250
[ 68.377226][ T0] tick_sched_do_timer+0xd4/0xe0
[ 68.382786][ T0] tick_sched_timer+0x43/0xe0
[ 68.387467][ T0] __hrtimer_run_queues+0x274/0x5f0
[ 68.392666][ T0] hrtimer_interrupt+0x22a/0x480
[ 68.397612][ T0] smp_apic_timer_interrupt+0xdc/0x280
[ 68.403077][ T0] apic_timer_interrupt+0xf/0x20
[ 68.408018][ T0] __tsan_read1+0x97/0x100
[ 68.412443][ T0] kallsyms_expand_symbol.constprop.0+0x103/0x160
[ 68.418861][ T0] kallsyms_lookup_name+0x7f/0x120
[ 68.423973][ T0] debugfs_write+0x14b/0x2d0
[ 68.428570][ T0] full_proxy_write+0xbd/0x100
[ 68.433336][ T0] __vfs_write+0x67/0xc0
[ 68.437584][ T0] vfs_write+0x18a/0x390
[ 68.441823][ T0] ksys_write+0xd5/0x1b0
[ 68.446062][ T0] __x64_sys_write+0x4c/0x60
[ 68.450776][ T0] do_syscall_64+0xcc/0x370
[ 68.455285][ T0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 68.461166][ T0]
[ 68.463498][ T0] read to 0xffffffff86046008 of 8 bytes by task 0 on cpu 0:
[ 68.470830][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 68.476294][ T0] tick_irq_enter+0x139/0x1c0
[ 68.480969][ T0] irq_enter+0x4f/0x60
[ 68.485047][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 68.490611][ T0] apic_timer_interrupt+0xf/0x20
[ 68.495546][ T0] native_safe_halt+0xe/0x10
[ 68.500132][ T0] arch_cpu_idle+0x1f/0x30
[ 68.504546][ T0] default_idle_call+0x1e/0x40
[ 68.509457][ T0] do_idle+0x1af/0x280
[ 68.513531][ T0] cpu_startup_entry+0x1b/0x20
[ 68.518294][ T0] rest_init+0xec/0xf6
[ 68.522509][ T0] arch_call_rest_init+0x17/0x37
[ 68.527539][ T0] start_kernel+0x838/0x85e
[ 68.532045][ T0] x86_64_start_reservations+0x29/0x2b
[ 68.537503][ T0] x86_64_start_kernel+0x72/0x76
[ 68.542515][ T0] secondary_startup_64+0xa4/0xb0
[ 68.547525][ T0]
[ 68.549848][ T0] Reported by Kernel Concurrency Sanitizer on:
[ 68.556132][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.0-rc7+ #0
[ 68.563319][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 68.573372][ T0] ==================================================================
[ 68.581445][ T0] Kernel panic - not syncing: panic_on_warn set ...
[ 68.588037][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.0-rc7+ #0
[ 68.595136][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 68.605190][ T0] Call Trace:
[ 68.608497][ T0]
[ 68.611348][ T0] dump_stack+0x11d/0x181
[ 68.615683][ T0] panic+0x210/0x640
[ 68.619594][ T0] ? vprintk_func+0x8d/0x140
[ 68.624190][ T0] kcsan_report.cold+0xc/0x1a
[ 68.628878][ T0] kcsan_setup_watchpoint+0x3fe/0x460
[ 68.634254][ T0] __tsan_read8+0xc6/0x100
[ 68.638985][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 68.644465][ T0] tick_irq_enter+0x139/0x1c0
[ 68.649154][ T0] irq_enter+0x4f/0x60
[ 68.653235][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 68.658753][ T0] ? smp_reschedule_interrupt+0x71/0x1d0
[ 68.664399][ T0] apic_timer_interrupt+0xf/0x20
[ 68.669333][ T0]
[ 68.672278][ T0] RIP: 0010:native_safe_halt+0xe/0x10
[ 68.677653][ T0] Code: 90 90 90 90 90 90 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d 6c 52 47 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 5c 52 47 00 fb f4 90 55 48 89 e5 41 55 41 54 53 e8 d2 9a 9f fc e8 bd 3f b5 fd 0f
[ 68.697251][ T0] RSP: 0018:ffffffff85a03de0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 68.705661][ T0] RAX: 0000000000000016 RBX: ffffffff85a2b780 RCX: ffffffff86049ce8
[ 68.713634][ T0] RDX: 0000000000000000 RSI: ffffffff82506027 RDI: ffffffff85a56378
[ 68.721605][ T0] RBP: ffffffff85a03e18 R08: 0000000000000000 R09: 0000ffff85a56378
[ 68.729576][ T0] R10: 0000ffff855db9a0 R11: 0000ffff85a5637f R12: 0000000000000000
[ 68.737550][ T0] R13: ffffffff85a2b780 R14: 0000000000000000 R15: 0000000000000000
[ 68.745541][ T0] ? debug_smp_processor_id+0x47/0x172
[ 68.751010][ T0] ? default_idle+0x50/0x230
[ 68.755701][ T0] arch_cpu_idle+0x1f/0x30
[ 68.760118][ T0] default_idle_call+0x1e/0x40
[ 68.764882][ T0] do_idle+0x1af/0x280
[ 68.768963][ T0] cpu_startup_entry+0x1b/0x20
[ 68.773736][ T0] rest_init+0xec/0xf6
[ 68.777949][ T0] ? trace_event_define_fields_vector_free_moved+0xce/0xce
[ 68.785150][ T0] arch_call_rest_init+0x17/0x37
[ 68.790097][ T0] start_kernel+0x838/0x85e
[ 68.794607][ T0] x86_64_start_reservations+0x29/0x2b
[ 68.800061][ T0] x86_64_start_kernel+0x72/0x76
[ 68.804998][ T0] secondary_startup_64+0xa4/0xb0
[ 68.811263][ T0] Kernel Offset: disabled
[ 68.815593][ T0] Rebooting in 86400 seconds..