[[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2.
[ 49.980661][ T27] audit: type=1800 audit(1580383375.366:21): pid=7807 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2452 res=0
[ 50.021641][ T27] audit: type=1800 audit(1580383375.376:22): pid=7807 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 '10.128.0.104' (ECDSA) to the list of known hosts.
2020/01/30 11:23:06 fuzzer started
2020/01/30 11:23:07 dialing manager at 10.128.0.105:37077
2020/01/30 11:23:07 syscalls: 2900
2020/01/30 11:23:07 code coverage: enabled
2020/01/30 11:23:07 comparison tracing: enabled
2020/01/30 11:23:07 extra coverage: enabled
2020/01/30 11:23:07 setuid sandbox: enabled
2020/01/30 11:23:07 namespace sandbox: enabled
2020/01/30 11:23:07 Android sandbox: /sys/fs/selinux/policy does not exist
2020/01/30 11:23:07 fault injection: enabled
2020/01/30 11:23:07 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/01/30 11:23:07 net packet injection: enabled
2020/01/30 11:23:07 net device setup: enabled
2020/01/30 11:23:07 concurrency sanitizer: enabled
2020/01/30 11:23:07 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 68.661756][ C0] ==================================================================
[ 68.669927][ C0] BUG: KCSAN: data-race in __hrtimer_run_queues / hrtimer_active
[ 68.677639][ C0]
[ 68.679980][ C0] read to 0xffff88812c01fbd8 of 8 bytes by interrupt on cpu 1:
[ 68.687541][ C0] hrtimer_active+0x84/0x1a0
[ 68.692155][ C0] task_tick_fair+0x4c/0x910
[ 68.696759][ C0] scheduler_tick+0x5f/0xf0
[ 68.701275][ C0] update_process_times+0x5a/0x80
[ 68.706319][ C0] tick_sched_handle+0x75/0x100
[ 68.711179][ C0] tick_sched_timer+0x58/0xe0
[ 68.715973][ C0] __hrtimer_run_queues+0x274/0x5f0
[ 68.721170][ C0] hrtimer_interrupt+0x22a/0x480
[ 68.726118][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 68.731668][ C0] apic_timer_interrupt+0xf/0x20
[ 68.736640][ C0] kcsan_setup_watchpoint+0x1d4/0x460
[ 68.742011][ C0] __tsan_unaligned_write1+0xc3/0x100
[ 68.747387][ C0] kallsyms_expand_symbol.constprop.0+0xe8/0x160
[ 68.753879][ C0] kallsyms_lookup_name+0x7f/0x120
[ 68.758997][ C0] debugfs_write+0x14b/0x2d0
[ 68.763591][ C0] full_proxy_write+0xbd/0x100
[ 68.768369][ C0] __vfs_write+0x67/0xc0
[ 68.772626][ C0] vfs_write+0x18a/0x390
[ 68.776884][ C0] ksys_write+0xd5/0x1b0
[ 68.781134][ C0] __x64_sys_write+0x4c/0x60
[ 68.782298][ T7975] KCSAN: could not find function: 'poll_schedule_timeout'
[ 68.785934][ C0] do_syscall_64+0xcc/0x3a0
[ 68.797541][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 68.803554][ C0]
[ 68.805892][ C0] write to 0xffff88812c01fbd8 of 8 bytes by interrupt on cpu 0:
[ 68.813532][ C0] __hrtimer_run_queues+0x1e8/0x5f0
[ 68.818738][ C0] hrtimer_interrupt+0x22a/0x480
[ 68.823678][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 68.829162][ C0] apic_timer_interrupt+0xf/0x20
[ 68.834105][ C0] native_safe_halt+0xe/0x10
[ 68.838808][ C0] arch_cpu_idle+0xa/0x10
[ 68.843137][ C0] default_idle_call+0x1e/0x40
[ 68.847930][ C0] do_idle+0x1c2/0x290
[ 68.852005][ C0] cpu_startup_entry+0x1b/0x20
[ 68.856899][ C0] rest_init+0xec/0xf6
[ 68.860973][ C0] arch_call_rest_init+0x17/0x37
[ 68.865909][ C0] start_kernel+0x838/0x85e
[ 68.870425][ C0] x86_64_start_reservations+0x29/0x2b
[ 68.875995][ C0] x86_64_start_kernel+0x72/0x76
[ 68.880935][ C0] secondary_startup_64+0xa4/0xb0
[ 68.885946][ C0]
[ 68.888282][ C0] Reported by Kernel Concurrency Sanitizer on:
[ 68.894449][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 68.902339][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 68.912391][ C0] ==================================================================
[ 68.920605][ C0] Kernel panic - not syncing: panic_on_warn set ...
[ 68.927201][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 68.935109][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 68.946123][ C0] Call Trace:
[ 68.949402][ C0]
[ 68.952265][ C0] dump_stack+0x11d/0x181
[ 68.956634][ C0] panic+0x210/0x640
[ 68.960529][ C0] ? vprintk_func+0x8d/0x140
[ 68.965137][ C0] kcsan_report.cold+0xc/0xd
[ 68.969724][ C0] kcsan_setup_watchpoint+0x3fe/0x460
[ 68.975137][ C0] __tsan_unaligned_write8+0xc7/0x110
[ 68.980547][ C0] __hrtimer_run_queues+0x1e8/0x5f0
[ 68.985919][ C0] ? ktime_get_update_offsets_now+0x28f/0x2f0
[ 68.992129][ C0] hrtimer_interrupt+0x22a/0x480
[ 68.997075][ C0] ? sched_clock+0x13/0x20
[ 69.001629][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 69.007116][ C0] apic_timer_interrupt+0xf/0x20
[ 69.012073][ C0]
[ 69.015014][ C0] RIP: 0010:native_safe_halt+0xe/0x10
[ 69.020403][ 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
[ 69.040015][ C0] RSP: 0018:ffffffff85c03df8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 69.048435][ C0] RAX: 0000000000000000 RBX: ffffffff85c2b780 RCX: ffffffff82546c55
[ 69.056411][ C0] RDX: 0000000000000000 RSI: ffffffff82546c5e RDI: 0000000000000005
[ 69.064526][ C0] RBP: ffffffff85c03e18 R08: ffffffff85c2b780 R09: 0000ffff85a2d160
[ 69.072610][ C0] R10: 0000ffff85c03e08 R11: 0000ffff85a2d167 R12: 0000000000000000
[ 69.080595][ C0] R13: ffffffff85c2b780 R14: 0000000000000000 R15: 0000000000000000
[ 69.088616][ C0] ? debug_smp_processor_id+0x35/0x137
[ 69.094123][ C0] ? debug_smp_processor_id+0x3e/0x137
[ 69.099602][ C0] ? default_idle+0x26/0x180
[ 69.104283][ C0] arch_cpu_idle+0xa/0x10
[ 69.108708][ C0] default_idle_call+0x1e/0x40
[ 69.113476][ C0] do_idle+0x1c2/0x290
[ 69.117566][ C0] ? debug_smp_processor_id+0x43/0x137
[ 69.123162][ C0] cpu_startup_entry+0x1b/0x20
[ 69.127922][ C0] rest_init+0xec/0xf6
[ 69.132006][ C0] ? trace_event_define_fields_vector_free_moved+0xb4/0xb4
[ 69.139312][ C0] arch_call_rest_init+0x17/0x37
[ 69.144372][ C0] start_kernel+0x838/0x85e
[ 69.148882][ C0] x86_64_start_reservations+0x29/0x2b
[ 69.154434][ C0] x86_64_start_kernel+0x72/0x76
[ 69.159390][ C0] secondary_startup_64+0xa4/0xb0
[ 69.187161][ C0] Kernel Offset: disabled
[ 69.191604][ C0] Rebooting in 86400 seconds..