[[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2.
[ 42.343374][ T26] audit: type=1800 audit(1573832833.842:21): pid=7537 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2452 res=0
[ 42.384760][ T26] audit: type=1800 audit(1573832833.852:22): pid=7537 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 '10.128.0.95' (ECDSA) to the list of known hosts.
2019/11/15 15:47:26 fuzzer started
2019/11/15 15:47:28 dialing manager at 10.128.0.105:44219
2019/11/15 15:47:28 syscalls: 2566
2019/11/15 15:47:28 code coverage: enabled
2019/11/15 15:47:28 comparison tracing: enabled
2019/11/15 15:47:28 extra coverage: extra coverage is not supported by the kernel
2019/11/15 15:47:28 setuid sandbox: enabled
2019/11/15 15:47:28 namespace sandbox: enabled
2019/11/15 15:47:28 Android sandbox: /sys/fs/selinux/policy does not exist
2019/11/15 15:47:28 fault injection: enabled
2019/11/15 15:47:28 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/11/15 15:47:28 net packet injection: enabled
2019/11/15 15:47:28 net device setup: enabled
2019/11/15 15:47:28 concurrency sanitizer: enabled
2019/11/15 15:47:28 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 56.954647][ T0] ==================================================================
[ 56.962814][ T0] BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64
[ 56.971730][ T0]
[ 56.974059][ T0] write to 0xffffffff8603d008 of 8 bytes by interrupt on cpu 1:
[ 56.981685][ T0] tick_do_update_jiffies64+0x100/0x250
[ 56.987223][ T0] tick_sched_do_timer+0xd4/0xe0
[ 56.992168][ T0] tick_sched_timer+0x43/0xe0
[ 56.996842][ T0] __hrtimer_run_queues+0x274/0x5f0
[ 57.002045][ T0] hrtimer_interrupt+0x22a/0x480
[ 57.006988][ T0] smp_apic_timer_interrupt+0xdc/0x280
[ 57.012455][ T0] apic_timer_interrupt+0xf/0x20
[ 57.017420][ T0] kcsan_setup_watchpoint+0x1d4/0x460
[ 57.022793][ T0] __tsan_unaligned_write1+0xc0/0x100
[ 57.028181][ T0] kallsyms_expand_symbol.constprop.0+0xe8/0x160
[ 57.034518][ T0] kallsyms_lookup_name+0x7f/0x120
[ 57.039629][ T0] debugfs_write+0x14b/0x2d0
[ 57.044239][ T0] full_proxy_write+0xbd/0x100
[ 57.048995][ T0] __vfs_write+0x67/0xc0
[ 57.053230][ T0] vfs_write+0x18a/0x390
[ 57.057470][ T0] ksys_write+0xd5/0x1b0
[ 57.061724][ T0] __x64_sys_write+0x4c/0x60
[ 57.066315][ T0] do_syscall_64+0xcc/0x370
[ 57.070816][ T0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 57.076692][ T0]
[ 57.079017][ T0] read to 0xffffffff8603d008 of 8 bytes by task 0 on cpu 0:
[ 57.086297][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 57.091767][ T0] tick_irq_enter+0x139/0x1c0
[ 57.096442][ T0] irq_enter+0x4f/0x60
[ 57.100509][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 57.105968][ T0] apic_timer_interrupt+0xf/0x20
[ 57.110905][ T0] native_safe_halt+0xe/0x10
[ 57.115495][ T0] arch_cpu_idle+0xa/0x10
[ 57.119819][ T0] default_idle_call+0x1e/0x40
[ 57.124583][ T0] do_idle+0x1af/0x280
[ 57.128660][ T0] cpu_startup_entry+0x1b/0x20
[ 57.133422][ T0] rest_init+0xec/0xf6
[ 57.137495][ T0] arch_call_rest_init+0x17/0x37
[ 57.142430][ T0] start_kernel+0x838/0x85e
[ 57.146935][ T0] x86_64_start_reservations+0x29/0x2b
[ 57.152391][ T0] x86_64_start_kernel+0x72/0x76
[ 57.157327][ T0] secondary_startup_64+0xa4/0xb0
[ 57.162361][ T0]
[ 57.164688][ T0] Reported by Kernel Concurrency Sanitizer on:
[ 57.170849][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.0-rc7+ #0
[ 57.177953][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 57.188018][ T0] ==================================================================
[ 57.196085][ T0] Kernel panic - not syncing: panic_on_warn set ...
[ 57.202675][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.0-rc7+ #0
[ 57.209797][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 57.219853][ T0] Call Trace:
[ 57.223130][ T0]
[ 57.225994][ T0] dump_stack+0x11d/0x181
[ 57.230325][ T0] panic+0x210/0x640
[ 57.234217][ T0] ? vprintk_func+0x8d/0x140
[ 57.238807][ T0] kcsan_report.cold+0xc/0xd
[ 57.243397][ T0] kcsan_setup_watchpoint+0x3fe/0x460
[ 57.248768][ T0] __tsan_read8+0xc6/0x100
[ 57.253186][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 57.258671][ T0] tick_irq_enter+0x139/0x1c0
[ 57.263346][ T0] irq_enter+0x4f/0x60
[ 57.267434][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 57.272903][ T0] apic_timer_interrupt+0xf/0x20
[ 57.277837][ T0]
[ 57.280787][ T0] RIP: 0010:native_safe_halt+0xe/0x10
[ 57.286168][ T0] Code: 90 90 90 90 90 90 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d fc c9 48 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d ec c9 48 00 fb f4 90 55 48 89 e5 41 55 41 54 53 e8 82 89 9f fc e8 8d 30 b5 fd 0f
[ 57.305772][ T0] RSP: 0018:ffffffff85a03df8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
[ 57.314664][ T0] RAX: 0000000000000000 RBX: ffffffff85a2b780 RCX: ffffffff824edc99
[ 57.322651][ T0] RDX: 0000000000000000 RSI: ffffffff824edca7 RDI: 0000000000000005
[ 57.330638][ T0] RBP: ffffffff85a03e18 R08: ffffffff85a2b780 R09: 0000ffff857d1160
[ 57.338615][ T0] R10: 0000ffff8535a11f R11: 0000ffff857d1167 R12: 0000000000000000
[ 57.346585][ T0] R13: ffffffff85a2b780 R14: 0000000000000000 R15: 0000000000000000
[ 57.354574][ T0] ? debug_smp_processor_id+0x39/0x172
[ 57.360036][ T0] ? debug_smp_processor_id+0x47/0x172
[ 57.365522][ T0] ? default_idle+0x26/0x180
[ 57.370126][ T0] arch_cpu_idle+0xa/0x10
[ 57.374454][ T0] default_idle_call+0x1e/0x40
[ 57.379379][ T0] do_idle+0x1af/0x280
[ 57.383482][ T0] cpu_startup_entry+0x1b/0x20
[ 57.388263][ T0] rest_init+0xec/0xf6
[ 57.392343][ T0] ? trace_event_define_fields_vector_free_moved+0xb4/0xb4
[ 57.399543][ T0] arch_call_rest_init+0x17/0x37
[ 57.404642][ T0] start_kernel+0x838/0x85e
[ 57.409150][ T0] x86_64_start_reservations+0x29/0x2b
[ 57.414612][ T0] x86_64_start_kernel+0x72/0x76
[ 57.419551][ T0] secondary_startup_64+0xa4/0xb0
[ 57.440627][ T0] Kernel Offset: disabled
[ 57.444984][ T0] Rebooting in 86400 seconds..