[[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2.
[ 50.988596][ T27] audit: type=1800 audit(1580250978.418:21): pid=7806 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2452 res=0
[ 51.043860][ T27] audit: type=1800 audit(1580250978.418:22): pid=7806 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 '10.128.1.34' (ECDSA) to the list of known hosts.
2020/01/28 22:36:29 fuzzer started
2020/01/28 22:36:31 dialing manager at 10.128.0.105:34991
2020/01/28 22:36:31 syscalls: 2900
2020/01/28 22:36:31 code coverage: enabled
2020/01/28 22:36:31 comparison tracing: enabled
2020/01/28 22:36:31 extra coverage: enabled
2020/01/28 22:36:31 setuid sandbox: enabled
2020/01/28 22:36:31 namespace sandbox: enabled
2020/01/28 22:36:31 Android sandbox: /sys/fs/selinux/policy does not exist
2020/01/28 22:36:31 fault injection: enabled
2020/01/28 22:36:31 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/01/28 22:36:31 net packet injection: enabled
2020/01/28 22:36:31 net device setup: enabled
2020/01/28 22:36:31 concurrency sanitizer: enabled
2020/01/28 22:36:31 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 65.143834][ T7979] KCSAN: could not find function: 'poll_schedule_timeout'
[ 66.914446][ C0] ==================================================================
[ 66.922720][ C0] BUG: KCSAN: data-race in __hrtimer_run_queues / hrtimer_active
[ 66.930426][ C0]
[ 66.932766][ C0] read to 0xffff88812c01fbd8 of 8 bytes by interrupt on cpu 1:
[ 66.940315][ C0] hrtimer_active+0x84/0x1a0
[ 66.944924][ C0] task_tick_fair+0x4c/0x910
[ 66.949519][ C0] scheduler_tick+0x5f/0xf0
[ 66.954027][ C0] update_process_times+0x5a/0x80
[ 66.959061][ C0] tick_sched_handle+0x75/0x100
[ 66.963928][ C0] tick_sched_timer+0x58/0xe0
[ 66.968623][ C0] __hrtimer_run_queues+0x274/0x5f0
[ 66.973834][ C0] hrtimer_interrupt+0x22a/0x480
[ 66.980076][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 66.985543][ C0] apic_timer_interrupt+0xf/0x20
[ 66.990485][ C0] kcsan_setup_watchpoint+0x1d4/0x460
[ 66.995854][ C0] __tsan_read1+0xc2/0x100
[ 67.000283][ C0] kallsyms_expand_symbol.constprop.0+0x70/0x160
[ 67.006615][ C0] kallsyms_lookup_name+0x7f/0x120
[ 67.011724][ C0] debugfs_write+0x14b/0x2d0
[ 67.016305][ C0] full_proxy_write+0xbd/0x100
[ 67.021081][ C0] __vfs_write+0x67/0xc0
[ 67.025330][ C0] vfs_write+0x18a/0x390
[ 67.029571][ C0] ksys_write+0xd5/0x1b0
[ 67.033811][ C0] __x64_sys_write+0x4c/0x60
[ 67.038413][ C0] do_syscall_64+0xcc/0x3a0
[ 67.042928][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 67.048806][ C0]
[ 67.051147][ C0] write to 0xffff88812c01fbd8 of 8 bytes by interrupt on cpu 0:
[ 67.058785][ C0] __hrtimer_run_queues+0x1e8/0x5f0
[ 67.063984][ C0] hrtimer_interrupt+0x22a/0x480
[ 67.068929][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 67.074378][ C0] apic_timer_interrupt+0xf/0x20
[ 67.079311][ C0] native_safe_halt+0xe/0x10
[ 67.083896][ C0] arch_cpu_idle+0xa/0x10
[ 67.088222][ C0] default_idle_call+0x1e/0x40
[ 67.092980][ C0] do_idle+0x1c2/0x290
[ 67.097056][ C0] cpu_startup_entry+0x1b/0x20
[ 67.101821][ C0] rest_init+0xec/0xf6
[ 67.105885][ C0] arch_call_rest_init+0x17/0x37
[ 67.110813][ C0] start_kernel+0x838/0x85e
[ 67.115310][ C0] x86_64_start_reservations+0x29/0x2b
[ 67.120757][ C0] x86_64_start_kernel+0x72/0x76
[ 67.125693][ C0] secondary_startup_64+0xa4/0xb0
[ 67.130702][ C0]
[ 67.133038][ C0] Reported by Kernel Concurrency Sanitizer on:
[ 67.139191][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 67.147073][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 67.157116][ C0] ==================================================================
[ 67.165161][ C0] Kernel panic - not syncing: panic_on_warn set ...
[ 67.171741][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 67.179615][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 67.189658][ C0] Call Trace:
[ 67.192930][ C0]
[ 67.195779][ C0] dump_stack+0x11d/0x181
[ 67.200117][ C0] panic+0x210/0x640
[ 67.204020][ C0] ? vprintk_func+0x8d/0x140
[ 67.208712][ C0] kcsan_report.cold+0xc/0xd
[ 67.213302][ C0] kcsan_setup_watchpoint+0x3fe/0x460
[ 67.218666][ C0] __tsan_unaligned_write8+0xc7/0x110
[ 67.224046][ C0] __hrtimer_run_queues+0x1e8/0x5f0
[ 67.229246][ C0] ? ktime_get_update_offsets_now+0x28f/0x2f0
[ 67.235321][ C0] hrtimer_interrupt+0x22a/0x480
[ 67.240254][ C0] ? sched_clock+0x13/0x20
[ 67.244673][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 67.250129][ C0] apic_timer_interrupt+0xf/0x20
[ 67.255052][ C0]
[ 67.257994][ C0] RIP: 0010:native_safe_halt+0xe/0x10
[ 67.263363][ C0] Code: cc cc cc cc cc cc cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d 4c e6 59 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 3c e6 59 00 fb f4 cc 55 48 89 e5 41 55 41 54 53 e8 d2 57 91 fc e8 fd da ab fd 0f
[ 67.283066][ C0] RSP: 0018:ffffffff85c03df8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 67.291616][ C0] RAX: 0000000000000000 RBX: ffffffff85c2b780 RCX: ffffffff82546c55
[ 67.299589][ C0] RDX: 0000000000000000 RSI: ffffffff82546c5e RDI: 0000000000000005
[ 67.307557][ C0] RBP: ffffffff85c03e18 R08: ffffffff85c2b780 R09: 0000ffff85a2d160
[ 67.315533][ C0] R10: 0000ffff85c03e08 R11: 0000ffff85a2d167 R12: 0000000000000000
[ 67.323495][ C0] R13: ffffffff85c2b780 R14: 0000000000000000 R15: 0000000000000000
[ 67.331482][ C0] ? debug_smp_processor_id+0x35/0x137
[ 67.336953][ C0] ? debug_smp_processor_id+0x3e/0x137
[ 67.342513][ C0] ? default_idle+0x26/0x180
[ 67.347102][ C0] arch_cpu_idle+0xa/0x10
[ 67.351548][ C0] default_idle_call+0x1e/0x40
[ 67.356316][ C0] do_idle+0x1c2/0x290
[ 67.360393][ C0] ? debug_smp_processor_id+0x43/0x137
[ 67.365861][ C0] cpu_startup_entry+0x1b/0x20
[ 67.370632][ C0] rest_init+0xec/0xf6
[ 67.374707][ C0] ? trace_event_define_fields_vector_free_moved+0xb4/0xb4
[ 67.381912][ C0] arch_call_rest_init+0x17/0x37
[ 67.386869][ C0] start_kernel+0x838/0x85e
[ 67.391384][ C0] x86_64_start_reservations+0x29/0x2b
[ 67.396845][ C0] x86_64_start_kernel+0x72/0x76
[ 67.401782][ C0] secondary_startup_64+0xa4/0xb0
[ 67.411790][ C0] Kernel Offset: disabled
[ 67.416124][ C0] Rebooting in 86400 seconds..