[[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2.
[ 49.287121][ T26] audit: type=1800 audit(1580705022.078:21): pid=7778 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2452 res=0
[ 49.342487][ T26] audit: type=1800 audit(1580705022.078:22): pid=7778 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 '10.128.0.60' (ECDSA) to the list of known hosts.
2020/02/03 04:43:53 fuzzer started
2020/02/03 04:43:55 dialing manager at 10.128.0.105:41149
2020/02/03 04:43:56 syscalls: 2904
2020/02/03 04:43:56 code coverage: enabled
2020/02/03 04:43:56 comparison tracing: enabled
2020/02/03 04:43:56 extra coverage: enabled
2020/02/03 04:43:56 setuid sandbox: enabled
2020/02/03 04:43:56 namespace sandbox: enabled
2020/02/03 04:43:56 Android sandbox: /sys/fs/selinux/policy does not exist
2020/02/03 04:43:56 fault injection: enabled
2020/02/03 04:43:56 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/02/03 04:43:56 net packet injection: enabled
2020/02/03 04:43:56 net device setup: enabled
2020/02/03 04:43:56 concurrency sanitizer: enabled
2020/02/03 04:43:56 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 63.354080][ C0] ==================================================================
[ 63.362218][ C0] BUG: KCSAN: data-race in __hrtimer_run_queues / hrtimer_active
[ 63.369930][ C0]
[ 63.372259][ C0] read to 0xffff88812c01fbd8 of 8 bytes by interrupt on cpu 1:
[ 63.379916][ C0] hrtimer_active+0x84/0x1a0
[ 63.384509][ C0] task_tick_fair+0x4c/0x910
[ 63.389097][ C0] scheduler_tick+0x5f/0xf0
[ 63.393597][ C0] update_process_times+0x5a/0x80
[ 63.398634][ C0] tick_sched_handle+0x75/0x100
[ 63.403492][ C0] tick_sched_timer+0x58/0xe0
[ 63.408164][ C0] __hrtimer_run_queues+0x274/0x5f0
[ 63.413368][ C0] hrtimer_interrupt+0x22a/0x480
[ 63.418391][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 63.423848][ C0] apic_timer_interrupt+0xf/0x20
[ 63.428794][ C0] kcsan_setup_watchpoint+0x1d4/0x460
[ 63.434159][ C0] __tsan_unaligned_write1+0xc3/0x100
[ 63.439528][ C0] kallsyms_expand_symbol.constprop.0+0xe8/0x160
[ 63.445865][ C0] kallsyms_lookup_name+0x7f/0x120
[ 63.450978][ C0] debugfs_write+0x14b/0x2d0
[ 63.455558][ C0] full_proxy_write+0xbd/0x100
[ 63.460322][ C0] __vfs_write+0x67/0xc0
[ 63.464720][ C0] vfs_write+0x18a/0x390
[ 63.468974][ C0] ksys_write+0xd5/0x1b0
[ 63.473228][ C0] __x64_sys_write+0x4c/0x60
[ 63.477823][ C0] do_syscall_64+0xcc/0x3a0
[ 63.482341][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 63.488303][ C0]
[ 63.490629][ C0] write to 0xffff88812c01fbd8 of 8 bytes by interrupt on cpu 0:
[ 63.498274][ C0] __hrtimer_run_queues+0x1e8/0x5f0
[ 63.503461][ C0] hrtimer_interrupt+0x22a/0x480
[ 63.508391][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 63.513858][ C0] apic_timer_interrupt+0xf/0x20
[ 63.518797][ C0] native_safe_halt+0xe/0x10
[ 63.523398][ C0] arch_cpu_idle+0xa/0x10
[ 63.527725][ C0] default_idle_call+0x1e/0x40
[ 63.532483][ C0] do_idle+0x1c2/0x290
[ 63.536545][ C0] cpu_startup_entry+0x1b/0x20
[ 63.541297][ C0] rest_init+0xec/0xf6
[ 63.545355][ C0] arch_call_rest_init+0x17/0x37
[ 63.550283][ C0] start_kernel+0x838/0x85e
[ 63.554798][ C0] x86_64_start_reservations+0x29/0x2b
[ 63.560256][ C0] x86_64_start_kernel+0x72/0x76
[ 63.565181][ C0] secondary_startup_64+0xa4/0xb0
[ 63.570190][ C0]
[ 63.572507][ C0] Reported by Kernel Concurrency Sanitizer on:
[ 63.578653][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 63.586530][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 63.596571][ C0] ==================================================================
[ 63.604614][ C0] Kernel panic - not syncing: panic_on_warn set ...
[ 63.611237][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 63.619207][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 63.629273][ C0] Call Trace:
[ 63.632557][ C0]
[ 63.635409][ C0] dump_stack+0x11d/0x181
[ 63.639736][ C0] panic+0x210/0x640
[ 63.643640][ C0] ? vprintk_func+0x8d/0x140
[ 63.648238][ C0] kcsan_report.cold+0xc/0xd
[ 63.652834][ C0] kcsan_setup_watchpoint+0x3fe/0x460
[ 63.658215][ C0] __tsan_unaligned_write8+0xc7/0x110
[ 63.663601][ C0] __hrtimer_run_queues+0x1e8/0x5f0
[ 63.668800][ C0] ? ktime_get_update_offsets_now+0x28f/0x2f0
[ 63.674857][ C0] hrtimer_interrupt+0x22a/0x480
[ 63.679797][ C0] ? sched_clock+0x13/0x20
[ 63.684219][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 63.689678][ C0] apic_timer_interrupt+0xf/0x20
[ 63.694598][ C0]
[ 63.697537][ C0] RIP: 0010:native_safe_halt+0xe/0x10
[ 63.702911][ 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
[ 63.722504][ C0] RSP: 0018:ffffffff85c03df8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 63.731431][ C0] RAX: 0000000000000000 RBX: ffffffff85c2b780 RCX: ffffffff82546c55
[ 63.739396][ C0] RDX: 0000000000000000 RSI: ffffffff82546c5e RDI: 0000000000000005
[ 63.747363][ C0] RBP: ffffffff85c03e18 R08: ffffffff85c2b780 R09: 0000ffff85a2d160
[ 63.755344][ C0] R10: 0000ffff85c03e08 R11: 0000ffff85a2d167 R12: 0000000000000000
[ 63.763308][ C0] R13: ffffffff85c2b780 R14: 0000000000000000 R15: 0000000000000000
[ 63.771286][ C0] ? debug_smp_processor_id+0x35/0x137
[ 63.776859][ C0] ? debug_smp_processor_id+0x3e/0x137
[ 63.782315][ C0] ? default_idle+0x26/0x180
[ 63.786921][ C0] arch_cpu_idle+0xa/0x10
[ 63.791254][ C0] default_idle_call+0x1e/0x40
[ 63.796039][ C0] do_idle+0x1c2/0x290
[ 63.800133][ C0] cpu_startup_entry+0x1b/0x20
[ 63.804898][ C0] rest_init+0xec/0xf6
[ 63.808976][ C0] ? trace_event_define_fields_vector_free_moved+0xb4/0xb4
[ 63.816189][ C0] arch_call_rest_init+0x17/0x37
[ 63.821126][ C0] start_kernel+0x838/0x85e
[ 63.825733][ C0] x86_64_start_reservations+0x29/0x2b
[ 63.831209][ C0] x86_64_start_kernel+0x72/0x76
[ 63.836148][ C0] secondary_startup_64+0xa4/0xb0
[ 63.863887][ C0] Kernel Offset: disabled
[ 63.868244][ C0] Rebooting in 86400 seconds..