[[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2.
[ 48.560065][ T27] audit: type=1800 audit(1580421755.418:21): pid=7817 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2452 res=0
[ 48.610378][ T27] audit: type=1800 audit(1580421755.418:22): pid=7817 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 '10.128.0.57' (ECDSA) to the list of known hosts.
2020/01/30 22:02:46 fuzzer started
2020/01/30 22:02:48 dialing manager at 10.128.0.105:37077
2020/01/30 22:02:48 syscalls: 2900
2020/01/30 22:02:48 code coverage: enabled
2020/01/30 22:02:48 comparison tracing: enabled
2020/01/30 22:02:48 extra coverage: enabled
2020/01/30 22:02:48 setuid sandbox: enabled
2020/01/30 22:02:48 namespace sandbox: enabled
2020/01/30 22:02:48 Android sandbox: /sys/fs/selinux/policy does not exist
2020/01/30 22:02:48 fault injection: enabled
2020/01/30 22:02:48 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/01/30 22:02:48 net packet injection: enabled
2020/01/30 22:02:48 net device setup: enabled
2020/01/30 22:02:48 concurrency sanitizer: enabled
2020/01/30 22:02:48 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 72.005424][ C0] ==================================================================
[ 72.013595][ C0] BUG: KCSAN: data-race in __hrtimer_run_queues / hrtimer_active
[ 72.021298][ C0]
[ 72.023641][ C0] read to 0xffff88812c01fbd8 of 8 bytes by interrupt on cpu 1:
[ 72.031196][ C0] hrtimer_active+0x84/0x1a0
[ 72.035791][ C0] task_tick_fair+0x4c/0x910
[ 72.040386][ C0] scheduler_tick+0x5f/0xf0
[ 72.044906][ C0] update_process_times+0x5a/0x80
[ 72.049942][ C0] tick_sched_handle+0x75/0x100
[ 72.054820][ C0] tick_sched_timer+0x58/0xe0
[ 72.059511][ C0] __hrtimer_run_queues+0x274/0x5f0
[ 72.064699][ C0] hrtimer_interrupt+0x22a/0x480
[ 72.069648][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 72.075118][ C0] apic_timer_interrupt+0xf/0x20
[ 72.080069][ C0] kallsyms_expand_symbol.constprop.0+0xf1/0x160
[ 72.086410][ C0] kallsyms_lookup_name+0x7f/0x120
[ 72.091529][ C0] debugfs_write+0x14b/0x2d0
[ 72.096119][ C0] full_proxy_write+0xbd/0x100
[ 72.100877][ C0] __vfs_write+0x67/0xc0
[ 72.105135][ C0] vfs_write+0x18a/0x390
[ 72.109385][ C0] ksys_write+0xd5/0x1b0
[ 72.113626][ C0] __x64_sys_write+0x4c/0x60
[ 72.118219][ C0] do_syscall_64+0xcc/0x3a0
[ 72.122727][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 72.128611][ C0]
[ 72.130936][ C0] write to 0xffff88812c01fbd8 of 8 bytes by interrupt on cpu 0:
[ 72.138561][ C0] __hrtimer_run_queues+0x1e8/0x5f0
[ 72.143748][ C0] hrtimer_interrupt+0x22a/0x480
[ 72.148691][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 72.154157][ C0] apic_timer_interrupt+0xf/0x20
[ 72.159092][ C0] native_safe_halt+0xe/0x10
[ 72.163682][ C0] arch_cpu_idle+0xa/0x10
[ 72.168038][ C0] default_idle_call+0x1e/0x40
[ 72.172813][ C0] do_idle+0x1c2/0x290
[ 72.176902][ C0] cpu_startup_entry+0x1b/0x20
[ 72.181681][ C0] rest_init+0xec/0xf6
[ 72.185754][ C0] arch_call_rest_init+0x17/0x37
[ 72.190693][ C0] start_kernel+0x838/0x85e
[ 72.195192][ C0] x86_64_start_reservations+0x29/0x2b
[ 72.200647][ C0] x86_64_start_kernel+0x72/0x76
[ 72.205593][ C0] secondary_startup_64+0xa4/0xb0
[ 72.210598][ C0]
[ 72.212910][ C0] Reported by Kernel Concurrency Sanitizer on:
[ 72.219059][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 72.226945][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 72.230573][ T7989] KCSAN: could not find function: 'poll_schedule_timeout'
[ 72.237005][ C0] ==================================================================
[ 72.237015][ C0] Kernel panic - not syncing: panic_on_warn set ...
[ 72.237030][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 72.237038][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 72.237054][ C0] Call Trace:
[ 72.279945][ C0]
[ 72.282793][ C0] dump_stack+0x11d/0x181
[ 72.287214][ C0] panic+0x210/0x640
[ 72.291152][ C0] ? vprintk_func+0x8d/0x140
[ 72.295763][ C0] kcsan_report.cold+0xc/0xd
[ 72.300363][ C0] kcsan_setup_watchpoint+0x3fe/0x460
[ 72.305741][ C0] __tsan_unaligned_write8+0xc7/0x110
[ 72.311227][ C0] __hrtimer_run_queues+0x1e8/0x5f0
[ 72.316434][ C0] ? ktime_get_update_offsets_now+0x28f/0x2f0
[ 72.322506][ C0] hrtimer_interrupt+0x22a/0x480
[ 72.327445][ C0] ? sched_clock+0x13/0x20
[ 72.331873][ C0] smp_apic_timer_interrupt+0xdc/0x280
[ 72.337345][ C0] apic_timer_interrupt+0xf/0x20
[ 72.342393][ C0]
[ 72.345345][ C0] RIP: 0010:native_safe_halt+0xe/0x10
[ 72.350723][ 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
[ 72.370328][ C0] RSP: 0018:ffffffff85c03df8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 72.378767][ C0] RAX: 0000000000000000 RBX: ffffffff85c2b780 RCX: ffffffff82546c55
[ 72.386845][ C0] RDX: 0000000000000000 RSI: ffffffff82546c5e RDI: 0000000000000005
[ 72.394819][ C0] RBP: ffffffff85c03e18 R08: ffffffff85c2b780 R09: 0000ffff85a2d160
[ 72.402785][ C0] R10: 0000ffff85c03e08 R11: 0000ffff85a2d167 R12: 0000000000000000
[ 72.410767][ C0] R13: ffffffff85c2b780 R14: 0000000000000000 R15: 0000000000000000
[ 72.418760][ C0] ? debug_smp_processor_id+0x35/0x137
[ 72.424217][ C0] ? debug_smp_processor_id+0x3e/0x137
[ 72.429676][ C0] ? default_idle+0x26/0x180
[ 72.434270][ C0] arch_cpu_idle+0xa/0x10
[ 72.438616][ C0] default_idle_call+0x1e/0x40
[ 72.443374][ C0] do_idle+0x1c2/0x290
[ 72.447443][ C0] ? debug_smp_processor_id+0x43/0x137
[ 72.452898][ C0] cpu_startup_entry+0x1b/0x20
[ 72.457651][ C0] rest_init+0xec/0xf6
[ 72.461736][ C0] ? trace_event_define_fields_vector_free_moved+0xb4/0xb4
[ 72.468951][ C0] arch_call_rest_init+0x17/0x37
[ 72.473909][ C0] start_kernel+0x838/0x85e
[ 72.478423][ C0] x86_64_start_reservations+0x29/0x2b
[ 72.483875][ C0] x86_64_start_kernel+0x72/0x76
[ 72.488802][ C0] secondary_startup_64+0xa4/0xb0
[ 72.519541][ C0] Kernel Offset: disabled
[ 72.523878][ C0] Rebooting in 86400 seconds..