[[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2.
[ 41.338035][ T26] audit: type=1800 audit(1574053321.386:21): pid=7429 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2452 res=0
[ 41.388847][ T26] audit: type=1800 audit(1574053321.386:22): pid=7429 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 '10.128.0.177' (ECDSA) to the list of known hosts.
2019/11/18 05:02:12 fuzzer started
2019/11/18 05:02:13 dialing manager at 10.128.0.105:33487
2019/11/18 05:02:13 syscalls: 2566
2019/11/18 05:02:13 code coverage: enabled
2019/11/18 05:02:13 comparison tracing: enabled
2019/11/18 05:02:13 extra coverage: extra coverage is not supported by the kernel
2019/11/18 05:02:13 setuid sandbox: enabled
2019/11/18 05:02:13 namespace sandbox: enabled
2019/11/18 05:02:13 Android sandbox: /sys/fs/selinux/policy does not exist
2019/11/18 05:02:13 fault injection: enabled
2019/11/18 05:02:13 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/11/18 05:02:13 net packet injection: enabled
2019/11/18 05:02:13 net device setup: enabled
2019/11/18 05:02:13 concurrency sanitizer: enabled
2019/11/18 05:02:13 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 58.604111][ T0] ==================================================================
[ 58.612248][ T0] BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64
[ 58.621178][ T0]
[ 58.623504][ T0] write to 0xffffffff8603d008 of 8 bytes by interrupt on cpu 1:
[ 58.631130][ T0] tick_do_update_jiffies64+0x100/0x250
[ 58.636673][ T0] tick_sched_do_timer+0xd4/0xe0
[ 58.641602][ T0] tick_sched_timer+0x43/0xe0
[ 58.646285][ T0] __hrtimer_run_queues+0x274/0x5f0
[ 58.651741][ T0] hrtimer_interrupt+0x22a/0x480
[ 58.656681][ T0] smp_apic_timer_interrupt+0xdc/0x280
[ 58.662152][ T0] apic_timer_interrupt+0xf/0x20
[ 58.667086][ T0] kcsan_setup_watchpoint+0x1d4/0x460
[ 58.672453][ T0] __tsan_read1+0xc2/0x100
[ 58.676870][ T0] kallsyms_expand_symbol.constprop.0+0x70/0x160
[ 58.683185][ T0] kallsyms_lookup_name+0x7f/0x120
[ 58.688294][ T0] debugfs_write+0x14b/0x2d0
[ 58.692879][ T0] full_proxy_write+0xbd/0x100
[ 58.697747][ T0] __vfs_write+0x67/0xc0
[ 58.702001][ T0] vfs_write+0x18a/0x390
[ 58.706251][ T0] ksys_write+0xd5/0x1b0
[ 58.710485][ T0] __x64_sys_write+0x4c/0x60
[ 58.715076][ T0] do_syscall_64+0xcc/0x370
[ 58.719579][ T0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 58.725452][ T0]
[ 58.727779][ T0] read to 0xffffffff8603d008 of 8 bytes by task 0 on cpu 0:
[ 58.735059][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 58.740517][ T0] tick_irq_enter+0x139/0x1c0
[ 58.745192][ T0] irq_enter+0x4f/0x60
[ 58.749256][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 58.754707][ T0] apic_timer_interrupt+0xf/0x20
[ 58.759638][ T0] native_safe_halt+0xe/0x10
[ 58.764220][ T0] arch_cpu_idle+0xa/0x10
[ 58.768540][ T0] default_idle_call+0x1e/0x40
[ 58.773308][ T0] do_idle+0x1af/0x280
[ 58.777385][ T0] cpu_startup_entry+0x1b/0x20
[ 58.782143][ T0] rest_init+0xec/0xf6
[ 58.786211][ T0] arch_call_rest_init+0x17/0x37
[ 58.791156][ T0] start_kernel+0x838/0x85e
[ 58.795655][ T0] x86_64_start_reservations+0x29/0x2b
[ 58.801110][ T0] x86_64_start_kernel+0x72/0x76
[ 58.806040][ T0] secondary_startup_64+0xa4/0xb0
[ 58.811132][ T0]
[ 58.813468][ T0] Reported by Kernel Concurrency Sanitizer on:
[ 58.819625][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.0-rc7+ #0
[ 58.826723][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 58.836770][ T0] ==================================================================
[ 58.844822][ T0] Kernel panic - not syncing: panic_on_warn set ...
[ 58.851405][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.0-rc7+ #0
[ 58.858496][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 58.868539][ T0] Call Trace:
[ 58.871809][ T0]
[ 58.874660][ T0] dump_stack+0x11d/0x181
[ 58.878988][ T0] panic+0x210/0x640
[ 58.882886][ T0] ? vprintk_func+0x8d/0x140
[ 58.887478][ T0] kcsan_report.cold+0xc/0xd
[ 58.892090][ T0] kcsan_setup_watchpoint+0x3fe/0x460
[ 58.897465][ T0] __tsan_read8+0xc6/0x100
[ 58.901884][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 58.907336][ T0] tick_irq_enter+0x139/0x1c0
[ 58.912005][ T0] irq_enter+0x4f/0x60
[ 58.916067][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 58.921537][ T0] apic_timer_interrupt+0xf/0x20
[ 58.926472][ T0]
[ 58.929408][ T0] RIP: 0010:native_safe_halt+0xe/0x10
[ 58.934777][ 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
[ 58.954384][ T0] RSP: 0018:ffffffff85a03df8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
[ 58.962791][ T0] RAX: 0000000000000000 RBX: ffffffff85a2b780 RCX: ffffffff824edc99
[ 58.970757][ T0] RDX: 0000000000000000 RSI: ffffffff824edca7 RDI: 0000000000000005
[ 58.978735][ T0] RBP: ffffffff85a03e18 R08: ffffffff85a2b780 R09: 0000ffff857d1160
[ 58.986700][ T0] R10: 0000ffff855db92e R11: 0000ffff857d1167 R12: 0000000000000000
[ 58.994664][ T0] R13: ffffffff85a2b780 R14: 0000000000000000 R15: 0000000000000000
[ 59.002651][ T0] ? debug_smp_processor_id+0x39/0x172
[ 59.008107][ T0] ? debug_smp_processor_id+0x47/0x172
[ 59.013997][ T0] ? default_idle+0x26/0x180
[ 59.018583][ T0] arch_cpu_idle+0xa/0x10
[ 59.022908][ T0] default_idle_call+0x1e/0x40
[ 59.027674][ T0] do_idle+0x1af/0x280
[ 59.031741][ T0] cpu_startup_entry+0x1b/0x20
[ 59.036507][ T0] rest_init+0xec/0xf6
[ 59.040576][ T0] ? trace_event_define_fields_vector_free_moved+0xb4/0xb4
[ 59.047769][ T0] arch_call_rest_init+0x17/0x37
[ 59.052701][ T0] start_kernel+0x838/0x85e
[ 59.057200][ T0] x86_64_start_reservations+0x29/0x2b
[ 59.062653][ T0] x86_64_start_kernel+0x72/0x76
[ 59.067584][ T0] secondary_startup_64+0xa4/0xb0
[ 59.170342][ T0] Kernel Offset: disabled
[ 59.174730][ T0] Rebooting in 86400 seconds..