[[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2.
[ 48.249207][ T26] audit: type=1800 audit(1580655620.046:21): pid=7835 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2452 res=0
[ 48.306185][ T26] audit: type=1800 audit(1580655620.046:22): pid=7835 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 '10.128.0.239' (ECDSA) to the list of known hosts.
2020/02/02 15:00:30 fuzzer started
2020/02/02 15:00:32 dialing manager at 10.128.0.105:41149
2020/02/02 15:00:46 syscalls: 2904
2020/02/02 15:00:46 code coverage: enabled
2020/02/02 15:00:46 comparison tracing: enabled
2020/02/02 15:00:46 extra coverage: enabled
2020/02/02 15:00:46 setuid sandbox: enabled
2020/02/02 15:00:46 namespace sandbox: enabled
2020/02/02 15:00:46 Android sandbox: /sys/fs/selinux/policy does not exist
2020/02/02 15:00:46 fault injection: enabled
2020/02/02 15:00:46 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/02/02 15:00:46 net packet injection: enabled
2020/02/02 15:00:46 net device setup: enabled
2020/02/02 15:00:46 concurrency sanitizer: enabled
2020/02/02 15:00:46 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 77.053670][ T0] ==================================================================
[ 77.062006][ T0] BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64
[ 77.070968][ T0]
[ 77.073311][ T0] write to 0xffffffff8624c7c8 of 8 bytes by interrupt on cpu 0:
[ 77.080960][ T0] tick_do_update_jiffies64+0x100/0x250
[ 77.086548][ T0] tick_sched_do_timer+0xd4/0xe0
[ 77.091581][ T0] tick_sched_timer+0x43/0xe0
[ 77.096271][ T0] __hrtimer_run_queues+0x274/0x5f0
[ 77.101475][ T0] hrtimer_interrupt+0x22a/0x480
[ 77.106422][ T0] smp_apic_timer_interrupt+0xdc/0x280
[ 77.111905][ T0] apic_timer_interrupt+0xf/0x20
[ 77.116980][ T0] kcsan_setup_watchpoint+0x1d4/0x460
[ 77.122358][ T0] __tsan_read1+0xc2/0x100
[ 77.126800][ T0] kallsyms_expand_symbol.constprop.0+0x70/0x160
[ 77.133136][ T0] kallsyms_lookup_name+0x7f/0x120
[ 77.138249][ T0] debugfs_write+0x14b/0x2d0
[ 77.142845][ T0] full_proxy_write+0xbd/0x100
[ 77.147612][ T0] __vfs_write+0x67/0xc0
[ 77.151857][ T0] vfs_write+0x18a/0x390
[ 77.156098][ T0] ksys_write+0xd5/0x1b0
[ 77.160347][ T0] __x64_sys_write+0x4c/0x60
[ 77.164939][ T0] do_syscall_64+0xcc/0x3a0
[ 77.169462][ T0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 77.175342][ T0]
[ 77.177679][ T0] read to 0xffffffff8624c7c8 of 8 bytes by task 0 on cpu 1:
[ 77.184995][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 77.190463][ T0] tick_irq_enter+0x139/0x1c0
[ 77.195150][ T0] irq_enter+0x4f/0x60
[ 77.199225][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 77.204681][ T0] apic_timer_interrupt+0xf/0x20
[ 77.209628][ T0] native_safe_halt+0xe/0x10
[ 77.214228][ T0] arch_cpu_idle+0xa/0x10
[ 77.218568][ T0] default_idle_call+0x1e/0x40
[ 77.223475][ T0] do_idle+0x1c2/0x290
[ 77.227609][ T0] cpu_startup_entry+0x1b/0x20
[ 77.232372][ T0] start_secondary+0x168/0x1b0
[ 77.237159][ T0] secondary_startup_64+0xa4/0xb0
[ 77.242172][ T0]
[ 77.244498][ T0] Reported by Kernel Concurrency Sanitizer on:
[ 77.250684][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.5.0-rc1-syzkaller #0
[ 77.258574][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 77.268640][ T0] ==================================================================
[ 77.276696][ T0] Kernel panic - not syncing: panic_on_warn set ...
[ 77.283293][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.5.0-rc1-syzkaller #0
[ 77.291298][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 77.301374][ T0] Call Trace:
[ 77.304664][ T0]
[ 77.307524][ T0] dump_stack+0x11d/0x181
[ 77.311871][ T0] panic+0x210/0x640
[ 77.316455][ T0] ? vprintk_func+0x8d/0x140
[ 77.321077][ T0] kcsan_report.cold+0xc/0xd
[ 77.325698][ T0] kcsan_setup_watchpoint+0x3fe/0x460
[ 77.331096][ T0] __tsan_read8+0xc6/0x100
[ 77.335528][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 77.341014][ T0] tick_irq_enter+0x139/0x1c0
[ 77.345706][ T0] irq_enter+0x4f/0x60
[ 77.349791][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 77.355261][ T0] apic_timer_interrupt+0xf/0x20
[ 77.360228][ T0]
[ 77.363183][ T0] RIP: 0010:native_safe_halt+0xe/0x10
[ 77.368567][ T0] 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
[ 77.388406][ T0] RSP: 0018:ffffc90000cd3e70 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 77.396847][ T0] RAX: 0000000000000001 RBX: ffff88812b785040 RCX: ffffffff82546c55
[ 77.404828][ T0] RDX: 0000000000000000 RSI: ffffffff82546c5e RDI: 0000000000000005
[ 77.412839][ T0] RBP: ffffc90000cd3e90 R08: ffff88812b785040 R09: 0000ffff85a2d168
[ 77.420819][ T0] R10: 0000c90000cd3e80 R11: 0000ffff85a2d16f R12: 0000000000000001
[ 77.428818][ T0] R13: ffff88812b785040 R14: 0000000000000000 R15: 0000000000000000
[ 77.436938][ T0] ? debug_smp_processor_id+0x35/0x137
[ 77.442406][ T0] ? debug_smp_processor_id+0x3e/0x137
[ 77.447880][ T0] ? default_idle+0x26/0x180
[ 77.452488][ T0] arch_cpu_idle+0xa/0x10
[ 77.456840][ T0] default_idle_call+0x1e/0x40
[ 77.461612][ T0] do_idle+0x1c2/0x290
[ 77.465684][ T0] ? complete+0x44/0x50
[ 77.469852][ T0] cpu_startup_entry+0x1b/0x20
[ 77.474653][ T0] start_secondary+0x168/0x1b0
[ 77.479432][ T0] secondary_startup_64+0xa4/0xb0
[ 77.514957][ T0] Kernel Offset: disabled
[ 77.519378][ T0] Rebooting in 86400 seconds..