[[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2.
[ 51.450413][ T27] audit: type=1800 audit(1580286104.058:21): pid=7837 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2452 res=0
[ 51.504913][ T27] audit: type=1800 audit(1580286104.058:22): pid=7837 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 '10.128.1.35' (ECDSA) to the list of known hosts.
2020/01/29 08:21:55 fuzzer started
2020/01/29 08:21:57 dialing manager at 10.128.0.105:34991
2020/01/29 08:21:58 syscalls: 2900
2020/01/29 08:21:58 code coverage: enabled
2020/01/29 08:21:58 comparison tracing: enabled
2020/01/29 08:21:58 extra coverage: enabled
2020/01/29 08:21:58 setuid sandbox: enabled
2020/01/29 08:21:58 namespace sandbox: enabled
2020/01/29 08:21:58 Android sandbox: /sys/fs/selinux/policy does not exist
2020/01/29 08:21:58 fault injection: enabled
2020/01/29 08:21:58 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/01/29 08:21:58 net packet injection: enabled
2020/01/29 08:21:58 net device setup: enabled
2020/01/29 08:21:58 concurrency sanitizer: enabled
2020/01/29 08:21:58 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 66.254958][ C0] ==================================================================
[ 66.263115][ C0] BUG: KCSAN: data-race in __hrtimer_run_queues / hrtimer_active
[ 66.270845][ C0]
[ 66.273181][ C0] read to 0xffff88812c01fbd8 of 8 bytes by interrupt on cpu 1:
[ 66.280739][ C0] hrtimer_active+0x84/0x1a0
[ 66.285327][ C0] task_tick_fair+0x4c/0x910
[ 66.290023][ C0] scheduler_tick+0x5f/0xf0
[ 66.294550][ C0] update_process_times+0x5a/0x80
[ 66.299594][ C0] tick_sched_handle+0x75/0x100
[ 66.304452][ C0] tick_sched_timer+0x58/0xe0
[ 66.309140][ C0] __hrtimer_run_queues+0x274/0x5f0
[ 66.314346][ C0] hrtimer_interrupt+0x22a/0x480
[ 66.319293][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 66.324762][ C0] apic_timer_interrupt+0xf/0x20
[ 66.329706][ C0] strcmp+0x55/0x70
[ 66.333521][ C0] kallsyms_lookup_name+0x91/0x120
[ 66.338641][ C0] debugfs_write+0x14b/0x2d0
[ 66.343239][ C0] full_proxy_write+0xbd/0x100
[ 66.348003][ C0] __vfs_write+0x67/0xc0
[ 66.352255][ C0] vfs_write+0x18a/0x390
[ 66.356534][ C0] ksys_write+0xd5/0x1b0
[ 66.360772][ C0] __x64_sys_write+0x4c/0x60
[ 66.365368][ C0] do_syscall_64+0xcc/0x3a0
[ 66.369989][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 66.375962][ C0]
[ 66.378302][ C0] write to 0xffff88812c01fbd8 of 8 bytes by interrupt on cpu 0:
[ 66.385954][ C0] __hrtimer_run_queues+0x1e8/0x5f0
[ 66.391147][ C0] hrtimer_interrupt+0x22a/0x480
[ 66.396088][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 66.401541][ C0] apic_timer_interrupt+0xf/0x20
[ 66.406485][ C0] native_safe_halt+0xe/0x10
[ 66.411082][ C0] arch_cpu_idle+0xa/0x10
[ 66.415473][ C0] default_idle_call+0x1e/0x40
[ 66.420243][ C0] do_idle+0x1c2/0x290
[ 66.424317][ C0] cpu_startup_entry+0x1b/0x20
[ 66.429197][ C0] rest_init+0xec/0xf6
[ 66.433267][ C0] arch_call_rest_init+0x17/0x37
[ 66.438221][ C0] start_kernel+0x838/0x85e
[ 66.442725][ C0] x86_64_start_reservations+0x29/0x2b
[ 66.448194][ C0] x86_64_start_kernel+0x72/0x76
[ 66.453138][ C0] secondary_startup_64+0xa4/0xb0
[ 66.458157][ C0]
[ 66.460476][ C0] Reported by Kernel Concurrency Sanitizer on:
[ 66.466639][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 66.474545][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 66.484606][ C0] ==================================================================
[ 66.492678][ C0] Kernel panic - not syncing: panic_on_warn set ...
[ 66.499265][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 66.507159][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 66.517268][ C0] Call Trace:
[ 66.520574][ C0]
[ 66.523437][ C0] dump_stack+0x11d/0x181
[ 66.527781][ C0] panic+0x210/0x640
[ 66.531697][ C0] ? vprintk_func+0x8d/0x140
[ 66.536309][ C0] kcsan_report.cold+0xc/0xd
[ 66.540916][ C0] kcsan_setup_watchpoint+0x3fe/0x460
[ 66.546427][ C0] __tsan_unaligned_write8+0xc7/0x110
[ 66.551816][ C0] __hrtimer_run_queues+0x1e8/0x5f0
[ 66.557018][ C0] ? ktime_get_update_offsets_now+0x28f/0x2f0
[ 66.563099][ C0] hrtimer_interrupt+0x22a/0x480
[ 66.568050][ C0] ? sched_clock+0x13/0x20
[ 66.572476][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 66.577950][ C0] apic_timer_interrupt+0xf/0x20
[ 66.582995][ C0]
[ 66.586042][ C0] RIP: 0010:native_safe_halt+0xe/0x10
[ 66.591427][ 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
[ 66.611036][ C0] RSP: 0018:ffffffff85c03df8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 66.619453][ C0] RAX: 0000000000000000 RBX: ffffffff85c2b780 RCX: ffffffff82546c55
[ 66.627431][ C0] RDX: 0000000000000000 RSI: ffffffff82546c5e RDI: 0000000000000005
[ 66.635419][ C0] RBP: ffffffff85c03e18 R08: ffffffff85c2b780 R09: 0000ffff85a2d160
[ 66.643841][ C0] R10: 0000ffff85c03e08 R11: 0000ffff85a2d167 R12: 0000000000000000
[ 66.651820][ C0] R13: ffffffff85c2b780 R14: 0000000000000000 R15: 0000000000000000
[ 66.659853][ C0] ? debug_smp_processor_id+0x35/0x137
[ 66.665362][ C0] ? debug_smp_processor_id+0x3e/0x137
[ 66.670843][ C0] ? default_idle+0x26/0x180
[ 66.675463][ C0] arch_cpu_idle+0xa/0x10
[ 66.679821][ C0] default_idle_call+0x1e/0x40
[ 66.684601][ C0] do_idle+0x1c2/0x290
[ 66.688684][ C0] ? debug_smp_processor_id+0x43/0x137
[ 66.694160][ C0] cpu_startup_entry+0x1b/0x20
[ 66.698918][ C0] rest_init+0xec/0xf6
[ 66.703003][ C0] ? trace_event_define_fields_vector_free_moved+0xb4/0xb4
[ 66.710212][ C0] arch_call_rest_init+0x17/0x37
[ 66.715176][ C0] start_kernel+0x838/0x85e
[ 66.719696][ C0] x86_64_start_reservations+0x29/0x2b
[ 66.725192][ C0] x86_64_start_kernel+0x72/0x76
[ 66.730320][ C0] secondary_startup_64+0xa4/0xb0
[ 66.740270][ C0] Kernel Offset: disabled
[ 66.744637][ C0] Rebooting in 86400 seconds..