[[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2.
[ 44.604431][ T26] audit: type=1800 audit(1574206106.179:21): pid=7526 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2452 res=0
[ 44.654456][ T26] audit: type=1800 audit(1574206106.179:22): pid=7526 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 '10.128.0.190' (ECDSA) to the list of known hosts.
2019/11/19 23:28:35 fuzzer started
2019/11/19 23:28:37 dialing manager at 10.128.0.105:42849
2019/11/19 23:28:37 syscalls: 2566
2019/11/19 23:28:37 code coverage: enabled
2019/11/19 23:28:37 comparison tracing: enabled
2019/11/19 23:28:37 extra coverage: extra coverage is not supported by the kernel
2019/11/19 23:28:37 setuid sandbox: enabled
2019/11/19 23:28:37 namespace sandbox: enabled
2019/11/19 23:28:37 Android sandbox: /sys/fs/selinux/policy does not exist
2019/11/19 23:28:37 fault injection: enabled
2019/11/19 23:28:37 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/11/19 23:28:37 net packet injection: enabled
2019/11/19 23:28:37 net device setup: enabled
2019/11/19 23:28:37 concurrency sanitizer: enabled
2019/11/19 23:28:37 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 59.840012][ T7696] KCSAN: could not find function: 'poll_schedule_timeout'
[ 63.798174][ T0] ==================================================================
[ 63.806352][ T0] BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64
[ 63.815289][ T0]
[ 63.817613][ T0] write to 0xffffffff8603d008 of 8 bytes by interrupt on cpu 1:
[ 63.825242][ T0] tick_do_update_jiffies64+0x100/0x250
[ 63.830786][ T0] tick_sched_do_timer+0xd4/0xe0
[ 63.835712][ T0] tick_sched_timer+0x43/0xe0
[ 63.840379][ T0] __hrtimer_run_queues+0x274/0x5f0
[ 63.845575][ T0] hrtimer_interrupt+0x22a/0x480
[ 63.850509][ T0] smp_apic_timer_interrupt+0xdc/0x280
[ 63.855964][ T0] apic_timer_interrupt+0xf/0x20
[ 63.860894][ T0] kcsan_setup_watchpoint+0x1d4/0x460
[ 63.866263][ T0] __tsan_read1+0xc2/0x100
[ 63.870676][ T0] kallsyms_expand_symbol.constprop.0+0x70/0x160
[ 63.876997][ T0] kallsyms_lookup_name+0x7f/0x120
[ 63.882102][ T0] debugfs_write+0x14b/0x2d0
[ 63.886683][ T0] full_proxy_write+0xbd/0x100
[ 63.891437][ T0] __vfs_write+0x67/0xc0
[ 63.895678][ T0] vfs_write+0x18a/0x390
[ 63.899923][ T0] ksys_write+0xd5/0x1b0
[ 63.904160][ T0] __x64_sys_write+0x4c/0x60
[ 63.908744][ T0] do_syscall_64+0xcc/0x370
[ 63.913240][ T0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 63.919115][ T0]
[ 63.921438][ T0] read to 0xffffffff8603d008 of 8 bytes by task 0 on cpu 0:
[ 63.928716][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 63.934167][ T0] tick_irq_enter+0x139/0x1c0
[ 63.938841][ T0] irq_enter+0x4f/0x60
[ 63.942906][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 63.948364][ T0] apic_timer_interrupt+0xf/0x20
[ 63.953294][ T0] native_safe_halt+0xe/0x10
[ 63.957881][ T0] arch_cpu_idle+0xa/0x10
[ 63.962201][ T0] default_idle_call+0x1e/0x40
[ 63.966961][ T0] do_idle+0x1af/0x280
[ 63.971022][ T0] cpu_startup_entry+0x1b/0x20
[ 63.975773][ T0] rest_init+0xec/0xf6
[ 63.979851][ T0] arch_call_rest_init+0x17/0x37
[ 63.984782][ T0] start_kernel+0x838/0x85e
[ 63.989276][ T0] x86_64_start_reservations+0x29/0x2b
[ 63.994726][ T0] x86_64_start_kernel+0x72/0x76
[ 63.999649][ T0] secondary_startup_64+0xa4/0xb0
[ 64.004653][ T0]
[ 64.006970][ T0] Reported by Kernel Concurrency Sanitizer on:
[ 64.013117][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.0-rc7+ #0
[ 64.020211][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 64.030254][ T0] ==================================================================
[ 64.038321][ T0] Kernel panic - not syncing: panic_on_warn set ...
[ 64.044907][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.0-rc7+ #0
[ 64.052004][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 64.062045][ T0] Call Trace:
[ 64.065318][ T0]
[ 64.068171][ T0] dump_stack+0x11d/0x181
[ 64.072495][ T0] panic+0x210/0x640
[ 64.076384][ T0] ? vprintk_func+0x8d/0x140
[ 64.080976][ T0] kcsan_report.cold+0xc/0xd
[ 64.085571][ T0] kcsan_setup_watchpoint+0x3fe/0x460
[ 64.090945][ T0] __tsan_read8+0xc6/0x100
[ 64.095358][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 64.100821][ T0] tick_irq_enter+0x139/0x1c0
[ 64.105496][ T0] irq_enter+0x4f/0x60
[ 64.109569][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 64.115031][ T0] apic_timer_interrupt+0xf/0x20
[ 64.119956][ T0]
[ 64.122888][ T0] RIP: 0010:native_safe_halt+0xe/0x10
[ 64.128260][ 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
[ 64.147860][ T0] RSP: 0018:ffffffff85a03df8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
[ 64.156269][ T0] RAX: 0000000000000000 RBX: ffffffff85a2b780 RCX: ffffffff824edc99
[ 64.164232][ T0] RDX: 0000000000000000 RSI: ffffffff824edca7 RDI: 0000000000000005
[ 64.172203][ T0] RBP: ffffffff85a03e18 R08: ffffffff85a2b780 R09: 0000ffff857d1160
[ 64.180164][ T0] R10: 000000000002a3c0 R11: 0000ffff857d1167 R12: 0000000000000000
[ 64.188133][ T0] R13: ffffffff85a2b780 R14: 0000000000000000 R15: 0000000000000000
[ 64.196115][ T0] ? debug_smp_processor_id+0x39/0x172
[ 64.201567][ T0] ? debug_smp_processor_id+0x47/0x172
[ 64.207031][ T0] ? default_idle+0x26/0x180
[ 64.211622][ T0] arch_cpu_idle+0xa/0x10
[ 64.215955][ T0] default_idle_call+0x1e/0x40
[ 64.220715][ T0] do_idle+0x1af/0x280
[ 64.224783][ T0] cpu_startup_entry+0x1b/0x20
[ 64.229548][ T0] rest_init+0xec/0xf6
[ 64.233617][ T0] ? trace_event_define_fields_vector_free_moved+0xb4/0xb4
[ 64.240804][ T0] arch_call_rest_init+0x17/0x37
[ 64.245734][ T0] start_kernel+0x838/0x85e
[ 64.250239][ T0] x86_64_start_reservations+0x29/0x2b
[ 64.255776][ T0] x86_64_start_kernel+0x72/0x76
[ 64.260710][ T0] secondary_startup_64+0xa4/0xb0
[ 64.302856][ T0] Kernel Offset: disabled
[ 64.307244][ T0] Rebooting in 86400 seconds..