[[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2.
[ 41.999350][ T26] audit: type=1800 audit(1573966333.028:21): pid=7497 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2452 res=0
[ 42.029284][ T26] audit: type=1800 audit(1573966333.028:22): pid=7497 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 '10.128.10.28' (ECDSA) to the list of known hosts.
2019/11/17 04:52:23 fuzzer started
2019/11/17 04:52:25 dialing manager at 10.128.0.105:34521
2019/11/17 04:52:25 syscalls: 2566
2019/11/17 04:52:25 code coverage: enabled
2019/11/17 04:52:25 comparison tracing: enabled
2019/11/17 04:52:25 extra coverage: extra coverage is not supported by the kernel
2019/11/17 04:52:25 setuid sandbox: enabled
2019/11/17 04:52:25 namespace sandbox: enabled
2019/11/17 04:52:25 Android sandbox: /sys/fs/selinux/policy does not exist
2019/11/17 04:52:25 fault injection: enabled
2019/11/17 04:52:25 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/11/17 04:52:25 net packet injection: enabled
2019/11/17 04:52:25 net device setup: enabled
2019/11/17 04:52:25 concurrency sanitizer: enabled
2019/11/17 04:52:25 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 56.966131][ T0] ==================================================================
[ 56.974279][ T0] BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64
[ 56.983198][ T0]
[ 56.985540][ T0] write to 0xffffffff8603d008 of 8 bytes by interrupt on cpu 1:
[ 56.993201][ T0] tick_do_update_jiffies64+0x100/0x250
[ 56.998745][ T0] tick_sched_do_timer+0xd4/0xe0
[ 57.003693][ T0] tick_sched_timer+0x43/0xe0
[ 57.008510][ T0] __hrtimer_run_queues+0x274/0x5f0
[ 57.013731][ T0] hrtimer_interrupt+0x22a/0x480
[ 57.018681][ T0] smp_apic_timer_interrupt+0xdc/0x280
[ 57.024138][ T0] apic_timer_interrupt+0xf/0x20
[ 57.029077][ T0] kcsan_setup_watchpoint+0x1d4/0x460
[ 57.034444][ T0] __tsan_unaligned_write1+0xc0/0x100
[ 57.039818][ T0] kallsyms_expand_symbol.constprop.0+0xe8/0x160
[ 57.046140][ T0] kallsyms_lookup_name+0x7f/0x120
[ 57.051263][ T0] debugfs_write+0x14b/0x2d0
[ 57.055862][ T0] full_proxy_write+0xbd/0x100
[ 57.060624][ T0] __vfs_write+0x67/0xc0
[ 57.064870][ T0] vfs_write+0x18a/0x390
[ 57.069105][ T0] ksys_write+0xd5/0x1b0
[ 57.073339][ T0] __x64_sys_write+0x4c/0x60
[ 57.077928][ T0] do_syscall_64+0xcc/0x370
[ 57.082443][ T0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 57.088326][ T0]
[ 57.090660][ T0] read to 0xffffffff8603d008 of 8 bytes by task 0 on cpu 0:
[ 57.097939][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 57.103422][ T0] tick_irq_enter+0x139/0x1c0
[ 57.108100][ T0] irq_enter+0x4f/0x60
[ 57.112166][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 57.117620][ T0] apic_timer_interrupt+0xf/0x20
[ 57.122551][ T0] native_safe_halt+0xe/0x10
[ 57.127135][ T0] arch_cpu_idle+0xa/0x10
[ 57.131478][ T0] default_idle_call+0x1e/0x40
[ 57.136241][ T0] do_idle+0x1af/0x280
[ 57.140307][ T0] cpu_startup_entry+0x1b/0x20
[ 57.145067][ T0] rest_init+0xec/0xf6
[ 57.149143][ T0] arch_call_rest_init+0x17/0x37
[ 57.154076][ T0] start_kernel+0x838/0x85e
[ 57.158590][ T0] x86_64_start_reservations+0x29/0x2b
[ 57.164064][ T0] x86_64_start_kernel+0x72/0x76
[ 57.168999][ T0] secondary_startup_64+0xa4/0xb0
[ 57.174023][ T0]
[ 57.176338][ T0] Reported by Kernel Concurrency Sanitizer on:
[ 57.182580][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.0-rc7+ #0
[ 57.189788][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 57.199846][ T0] ==================================================================
[ 57.207930][ T0] Kernel panic - not syncing: panic_on_warn set ...
[ 57.214529][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.0-rc7+ #0
[ 57.221630][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 57.231675][ T0] Call Trace:
[ 57.235088][ T0]
[ 57.237968][ T0] dump_stack+0x11d/0x181
[ 57.242305][ T0] panic+0x210/0x640
[ 57.246208][ T0] ? vprintk_func+0x8d/0x140
[ 57.250807][ T0] kcsan_report.cold+0xc/0xd
[ 57.255403][ T0] kcsan_setup_watchpoint+0x3fe/0x460
[ 57.260861][ T0] __tsan_read8+0xc6/0x100
[ 57.265277][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 57.270741][ T0] tick_irq_enter+0x139/0x1c0
[ 57.275590][ T0] irq_enter+0x4f/0x60
[ 57.277238][ T7665] KCSAN: could not find function: 'poll_schedule_timeout'
[ 57.279735][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 57.292275][ T0] apic_timer_interrupt+0xf/0x20
[ 57.297193][ T0]
[ 57.300124][ T0] RIP: 0010:native_safe_halt+0xe/0x10
[ 57.305496][ 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
[ 57.325106][ T0] RSP: 0018:ffffffff85a03df8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
[ 57.333523][ T0] RAX: 0000000000000000 RBX: ffffffff85a2b780 RCX: ffffffff824edc99
[ 57.341489][ T0] RDX: 0000000000000000 RSI: ffffffff824edca7 RDI: 0000000000000005
[ 57.349463][ T0] RBP: ffffffff85a03e18 R08: ffffffff85a2b780 R09: 0000ffff857d1160
[ 57.357563][ T0] R10: 0000ffff855db798 R11: 0000ffff857d1167 R12: 0000000000000000
[ 57.365541][ T0] R13: ffffffff85a2b780 R14: 0000000000000000 R15: 0000000000000000
[ 57.373527][ T0] ? debug_smp_processor_id+0x39/0x172
[ 57.379071][ T0] ? debug_smp_processor_id+0x47/0x172
[ 57.384545][ T0] ? default_idle+0x26/0x180
[ 57.389315][ T0] arch_cpu_idle+0xa/0x10
[ 57.393655][ T0] default_idle_call+0x1e/0x40
[ 57.398424][ T0] do_idle+0x1af/0x280
[ 57.402493][ T0] cpu_startup_entry+0x1b/0x20
[ 57.407259][ T0] rest_init+0xec/0xf6
[ 57.411346][ T0] ? trace_event_define_fields_vector_free_moved+0xb4/0xb4
[ 57.418554][ T0] arch_call_rest_init+0x17/0x37
[ 57.423484][ T0] start_kernel+0x838/0x85e
[ 57.427986][ T0] x86_64_start_reservations+0x29/0x2b
[ 57.433455][ T0] x86_64_start_kernel+0x72/0x76
[ 57.438415][ T0] secondary_startup_64+0xa4/0xb0
[ 57.444919][ T0] Kernel Offset: disabled
[ 57.449258][ T0] Rebooting in 86400 seconds..