[[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2.
[ 41.920518][ T26] audit: type=1800 audit(1573636860.291:21): pid=7513 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2452 res=0
[ 41.961018][ T26] audit: type=1800 audit(1573636860.291:22): pid=7513 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 '10.128.0.254' (ECDSA) to the list of known hosts.
2019/11/13 09:21:11 fuzzer started
2019/11/13 09:21:13 dialing manager at 10.128.0.105:45453
2019/11/13 09:21:13 syscalls: 2566
2019/11/13 09:21:13 code coverage: enabled
2019/11/13 09:21:13 comparison tracing: enabled
2019/11/13 09:21:13 extra coverage: extra coverage is not supported by the kernel
2019/11/13 09:21:13 setuid sandbox: enabled
2019/11/13 09:21:13 namespace sandbox: enabled
2019/11/13 09:21:13 Android sandbox: /sys/fs/selinux/policy does not exist
2019/11/13 09:21:13 fault injection: enabled
2019/11/13 09:21:13 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/11/13 09:21:13 net packet injection: enabled
2019/11/13 09:21:13 net device setup: enabled
2019/11/13 09:21:13 concurrency sanitizer: enabled
2019/11/13 09:21:13 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 57.357810][ T0] ==================================================================
[ 57.365962][ T0] BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64
[ 57.374891][ T0]
[ 57.377210][ T0] write to 0xffffffff86046008 of 8 bytes by interrupt on cpu 1:
[ 57.384835][ T0] tick_do_update_jiffies64+0x100/0x250
[ 57.390373][ T0] tick_sched_do_timer+0xd4/0xe0
[ 57.395301][ T0] tick_sched_timer+0x43/0xe0
[ 57.399971][ T0] __hrtimer_run_queues+0x274/0x5f0
[ 57.405159][ T0] hrtimer_interrupt+0x22a/0x480
[ 57.410096][ T0] smp_apic_timer_interrupt+0xdc/0x280
[ 57.415547][ T0] apic_timer_interrupt+0xf/0x20
[ 57.420478][ T0] kcsan_setup_watchpoint+0x1d4/0x460
[ 57.425834][ T0] __tsan_read1+0xc2/0x100
[ 57.430243][ T0] kallsyms_expand_symbol.constprop.0+0x103/0x160
[ 57.436648][ T0] kallsyms_lookup_name+0x7f/0x120
[ 57.442179][ T0] debugfs_write+0x14b/0x2d0
[ 57.446773][ T0] full_proxy_write+0xbd/0x100
[ 57.451526][ T0] __vfs_write+0x67/0xc0
[ 57.455932][ T0] vfs_write+0x18a/0x390
[ 57.460168][ T0] ksys_write+0xd5/0x1b0
[ 57.464409][ T0] __x64_sys_write+0x4c/0x60
[ 57.469601][ T0] do_syscall_64+0xcc/0x370
[ 57.474107][ T0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 57.479976][ T0]
[ 57.482298][ T0] read to 0xffffffff86046008 of 8 bytes by task 0 on cpu 0:
[ 57.489571][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 57.495018][ T0] tick_irq_enter+0x139/0x1c0
[ 57.499695][ T0] irq_enter+0x4f/0x60
[ 57.503764][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 57.509214][ T0] apic_timer_interrupt+0xf/0x20
[ 57.514140][ T0] native_safe_halt+0xe/0x10
[ 57.518723][ T0] arch_cpu_idle+0x1f/0x30
[ 57.523129][ T0] default_idle_call+0x1e/0x40
[ 57.527886][ T0] do_idle+0x1af/0x280
[ 57.531945][ T0] cpu_startup_entry+0x1b/0x20
[ 57.536700][ T0] rest_init+0xec/0xf6
[ 57.540766][ T0] arch_call_rest_init+0x17/0x37
[ 57.545695][ T0] start_kernel+0x838/0x85e
[ 57.550189][ T0] x86_64_start_reservations+0x29/0x2b
[ 57.555653][ T0] x86_64_start_kernel+0x72/0x76
[ 57.560588][ T0] secondary_startup_64+0xa4/0xb0
[ 57.565604][ T0]
[ 57.567930][ T0] Reported by Kernel Concurrency Sanitizer on:
[ 57.574086][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.0-rc7+ #0
[ 57.581182][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 57.591487][ T0] ==================================================================
[ 57.599564][ T0] Kernel panic - not syncing: panic_on_warn set ...
[ 57.606147][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.0-rc7+ #0
[ 57.613253][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 57.623301][ T0] Call Trace:
[ 57.626573][ T0]
[ 57.629419][ T0] dump_stack+0x11d/0x181
[ 57.633748][ T0] panic+0x210/0x640
[ 57.637641][ T0] ? vprintk_func+0x8d/0x140
[ 57.642229][ T0] kcsan_report.cold+0xc/0x1a
[ 57.646910][ T0] kcsan_setup_watchpoint+0x3fe/0x460
[ 57.652279][ T0] __tsan_read8+0xc6/0x100
[ 57.656700][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 57.662172][ T0] tick_irq_enter+0x139/0x1c0
[ 57.666847][ T0] irq_enter+0x4f/0x60
[ 57.670912][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 57.676368][ T0] ? smp_reschedule_interrupt+0x71/0x1d0
[ 57.681995][ T0] apic_timer_interrupt+0xf/0x20
[ 57.686921][ T0]
[ 57.689860][ T0] RIP: 0010:native_safe_halt+0xe/0x10
[ 57.695252][ 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
[ 57.714863][ T0] RSP: 0018:ffffffff85a03de0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 57.723273][ T0] RAX: 0000000000000016 RBX: ffffffff85a2b780 RCX: ffffffff86049ce8
[ 57.731265][ T0] RDX: 0000000000000000 RSI: ffffffff82506027 RDI: ffffffff85a56378
[ 57.739504][ T0] RBP: ffffffff85a03e18 R08: 0000000000000000 R09: 0000ffff85a56378
[ 57.747483][ T0] R10: 0000ffff85ff9000 R11: 0000ffff85a5637f R12: 0000000000000000
[ 57.755453][ T0] R13: ffffffff85a2b780 R14: 0000000000000000 R15: 0000000000000000
[ 57.763453][ T0] ? debug_smp_processor_id+0x47/0x172
[ 57.769344][ T0] ? default_idle+0x50/0x230
[ 57.773951][ T0] arch_cpu_idle+0x1f/0x30
[ 57.778374][ T0] default_idle_call+0x1e/0x40
[ 57.783139][ T0] do_idle+0x1af/0x280
[ 57.787213][ T0] cpu_startup_entry+0x1b/0x20
[ 57.791977][ T0] rest_init+0xec/0xf6
[ 57.796051][ T0] ? trace_event_define_fields_vector_free_moved+0xce/0xce
[ 57.803246][ T0] arch_call_rest_init+0x17/0x37
[ 57.808181][ T0] start_kernel+0x838/0x85e
[ 57.812686][ T0] x86_64_start_reservations+0x29/0x2b
[ 57.818422][ T0] x86_64_start_kernel+0x72/0x76
[ 57.823358][ T0] secondary_startup_64+0xa4/0xb0
[ 57.850374][ T0] Kernel Offset: disabled
[ 57.854842][ T0] Rebooting in 86400 seconds..