[[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2.
[ 65.148063][ T27] audit: type=1800 audit(1580459490.843:21): pid=7799 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2452 res=0
[ 65.193372][ T27] audit: type=1800 audit(1580459490.843:22): pid=7799 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 '10.128.0.174' (ECDSA) to the list of known hosts.
2020/01/31 08:31:43 fuzzer started
2020/01/31 08:31:45 dialing manager at 10.128.0.105:37077
2020/01/31 08:31:46 syscalls: 2900
2020/01/31 08:31:46 code coverage: enabled
2020/01/31 08:31:46 comparison tracing: enabled
2020/01/31 08:31:46 extra coverage: enabled
2020/01/31 08:31:46 setuid sandbox: enabled
2020/01/31 08:31:46 namespace sandbox: enabled
2020/01/31 08:31:46 Android sandbox: /sys/fs/selinux/policy does not exist
2020/01/31 08:31:46 fault injection: enabled
2020/01/31 08:31:46 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/01/31 08:31:46 net packet injection: enabled
2020/01/31 08:31:46 net device setup: enabled
2020/01/31 08:31:46 concurrency sanitizer: enabled
2020/01/31 08:31:46 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 82.983475][ C0] ==================================================================
[ 82.991727][ C0] BUG: KCSAN: data-race in __hrtimer_run_queues / hrtimer_active
[ 82.999432][ C0]
[ 83.001770][ C0] read to 0xffff88812c01fbd8 of 8 bytes by interrupt on cpu 1:
[ 83.009322][ C0] hrtimer_active+0x84/0x1a0
[ 83.013919][ C0] task_tick_fair+0x4c/0x910
[ 83.018513][ C0] scheduler_tick+0x5f/0xf0
[ 83.023019][ C0] update_process_times+0x5a/0x80
[ 83.028042][ C0] tick_sched_handle+0x75/0x100
[ 83.032920][ C0] tick_sched_timer+0x58/0xe0
[ 83.037771][ C0] __hrtimer_run_queues+0x274/0x5f0
[ 83.042973][ C0] hrtimer_interrupt+0x22a/0x480
[ 83.047909][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 83.053367][ C0] apic_timer_interrupt+0xf/0x20
[ 83.058351][ C0] kcsan_setup_watchpoint+0x1d4/0x460
[ 83.063728][ C0] __tsan_read1+0xc2/0x100
[ 83.068149][ C0] kallsyms_expand_symbol.constprop.0+0x70/0x160
[ 83.074478][ C0] kallsyms_lookup_name+0x7f/0x120
[ 83.079584][ C0] debugfs_write+0x14b/0x2d0
[ 83.084168][ C0] full_proxy_write+0xbd/0x100
[ 83.088929][ C0] __vfs_write+0x67/0xc0
[ 83.093177][ C0] vfs_write+0x18a/0x390
[ 83.097432][ C0] ksys_write+0xd5/0x1b0
[ 83.101808][ C0] __x64_sys_write+0x4c/0x60
[ 83.106402][ C0] do_syscall_64+0xcc/0x3a0
[ 83.110911][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 83.116961][ C0]
[ 83.119288][ C0] write to 0xffff88812c01fbd8 of 8 bytes by interrupt on cpu 0:
[ 83.126931][ C0] __hrtimer_run_queues+0x1e8/0x5f0
[ 83.132128][ C0] hrtimer_interrupt+0x22a/0x480
[ 83.137060][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 83.142522][ C0] apic_timer_interrupt+0xf/0x20
[ 83.147586][ C0] native_safe_halt+0xe/0x10
[ 83.152185][ C0] arch_cpu_idle+0xa/0x10
[ 83.156518][ C0] default_idle_call+0x1e/0x40
[ 83.161285][ C0] do_idle+0x1c2/0x290
[ 83.165348][ C0] cpu_startup_entry+0x1b/0x20
[ 83.170129][ C0] rest_init+0xec/0xf6
[ 83.174201][ C0] arch_call_rest_init+0x17/0x37
[ 83.179145][ C0] start_kernel+0x838/0x85e
[ 83.183656][ C0] x86_64_start_reservations+0x29/0x2b
[ 83.189141][ C0] x86_64_start_kernel+0x72/0x76
[ 83.194087][ C0] secondary_startup_64+0xa4/0xb0
[ 83.199102][ C0]
[ 83.201419][ C0] Reported by Kernel Concurrency Sanitizer on:
[ 83.207573][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 83.215452][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 83.225506][ C0] ==================================================================
[ 83.233677][ C0] Kernel panic - not syncing: panic_on_warn set ...
[ 83.240271][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 83.248154][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 83.258215][ C0] Call Trace:
[ 83.261499][ C0]
[ 83.264364][ C0] dump_stack+0x11d/0x181
[ 83.268701][ C0] panic+0x210/0x640
[ 83.272605][ C0] ? vprintk_func+0x8d/0x140
[ 83.277202][ C0] kcsan_report.cold+0xc/0xd
[ 83.281801][ C0] kcsan_setup_watchpoint+0x3fe/0x460
[ 83.287189][ C0] __tsan_unaligned_write8+0xc7/0x110
[ 83.292566][ C0] __hrtimer_run_queues+0x1e8/0x5f0
[ 83.297783][ C0] ? ktime_get_update_offsets_now+0x28f/0x2f0
[ 83.303867][ C0] hrtimer_interrupt+0x22a/0x480
[ 83.308811][ C0] ? sched_clock+0x13/0x20
[ 83.313230][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 83.318700][ C0] apic_timer_interrupt+0xf/0x20
[ 83.323651][ C0]
[ 83.326595][ C0] RIP: 0010:native_safe_halt+0xe/0x10
[ 83.331986][ 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
[ 83.351619][ C0] RSP: 0018:ffffffff85c03df8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 83.360052][ C0] RAX: 0000000000000000 RBX: ffffffff85c2b780 RCX: ffffffff82546c55
[ 83.368138][ C0] RDX: 0000000000000000 RSI: ffffffff82546c5e RDI: 0000000000000005
[ 83.376111][ C0] RBP: ffffffff85c03e18 R08: ffffffff85c2b780 R09: 0000ffff85a2d160
[ 83.384090][ C0] R10: 0000ffff85c03e08 R11: 0000ffff85a2d167 R12: 0000000000000000
[ 83.392061][ C0] R13: ffffffff85c2b780 R14: 0000000000000000 R15: 0000000000000000
[ 83.400055][ C0] ? debug_smp_processor_id+0x35/0x137
[ 83.405508][ C0] ? debug_smp_processor_id+0x3e/0x137
[ 83.410982][ C0] ? default_idle+0x26/0x180
[ 83.415581][ C0] arch_cpu_idle+0xa/0x10
[ 83.420017][ C0] default_idle_call+0x1e/0x40
[ 83.424789][ C0] do_idle+0x1c2/0x290
[ 83.428864][ C0] ? debug_smp_processor_id+0x43/0x137
[ 83.434349][ C0] cpu_startup_entry+0x1b/0x20
[ 83.439114][ C0] rest_init+0xec/0xf6
[ 83.443217][ C0] ? trace_event_define_fields_vector_free_moved+0xb4/0xb4
[ 83.450432][ C0] arch_call_rest_init+0x17/0x37
[ 83.455387][ C0] start_kernel+0x838/0x85e
[ 83.459896][ C0] x86_64_start_reservations+0x29/0x2b
[ 83.465368][ C0] x86_64_start_kernel+0x72/0x76
[ 83.470340][ C0] secondary_startup_64+0xa4/0xb0
[ 83.476796][ C0] Kernel Offset: disabled
[ 83.481118][ C0] Rebooting in 86400 seconds..