[[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2.
[ 56.029733][ T27] audit: type=1800 audit(1581191445.599:21): pid=7673 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2452 res=0
[ 56.076553][ T27] audit: type=1800 audit(1581191445.609:22): pid=7673 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 '10.128.15.206' (ECDSA) to the list of known hosts.
2020/02/08 19:50:57 fuzzer started
2020/02/08 19:50:58 dialing manager at 10.128.0.105:41103
2020/02/08 19:50:59 syscalls: 2904
2020/02/08 19:50:59 code coverage: enabled
2020/02/08 19:50:59 comparison tracing: enabled
2020/02/08 19:50:59 extra coverage: enabled
2020/02/08 19:50:59 setuid sandbox: enabled
2020/02/08 19:50:59 namespace sandbox: enabled
2020/02/08 19:50:59 Android sandbox: /sys/fs/selinux/policy does not exist
2020/02/08 19:50:59 fault injection: enabled
2020/02/08 19:50:59 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/02/08 19:50:59 net packet injection: enabled
2020/02/08 19:50:59 net device setup: enabled
2020/02/08 19:50:59 concurrency sanitizer: enabled
2020/02/08 19:50:59 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 71.142637][ T0] ==================================================================
[ 71.150787][ T0] BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64
[ 71.159705][ T0]
[ 71.162042][ T0] write to 0xffffffff8624d7c8 of 8 bytes by interrupt on cpu 0:
[ 71.169680][ T0] tick_do_update_jiffies64+0x100/0x250
[ 71.175228][ T0] tick_sched_do_timer+0xd4/0xe0
[ 71.180170][ T0] tick_sched_timer+0x43/0xe0
[ 71.184854][ T0] __hrtimer_run_queues+0x274/0x5f0
[ 71.190048][ T0] hrtimer_interrupt+0x22a/0x480
[ 71.195195][ T0] smp_apic_timer_interrupt+0xdc/0x280
[ 71.200738][ T0] apic_timer_interrupt+0xf/0x20
[ 71.205682][ T0] kcsan_setup_watchpoint+0x211/0x380
[ 71.211171][ T0] __tsan_read1+0xc2/0x100
[ 71.215598][ T0] kallsyms_expand_symbol.constprop.0+0x103/0x160
[ 71.222037][ T0] kallsyms_lookup_name+0x7f/0x120
[ 71.227152][ T0] debugfs_write+0x16c/0x320
[ 71.231742][ T0] full_proxy_write+0xbd/0x100
[ 71.236515][ T0] __vfs_write+0x67/0xc0
[ 71.240767][ T0] vfs_write+0x18a/0x390
[ 71.245963][ T0] ksys_write+0xd5/0x1b0
[ 71.250248][ T0] __x64_sys_write+0x4c/0x60
[ 71.254844][ T0] do_syscall_64+0xcc/0x3a0
[ 71.259352][ T0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 71.265229][ T0]
[ 71.267562][ T0] read to 0xffffffff8624d7c8 of 8 bytes by task 0 on cpu 1:
[ 71.275196][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 71.280659][ T0] tick_irq_enter+0x139/0x1c0
[ 71.285334][ T0] irq_enter+0x4f/0x60
[ 71.289440][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 71.295243][ T0] apic_timer_interrupt+0xf/0x20
[ 71.300965][ T0] native_safe_halt+0xe/0x10
[ 71.305558][ T0] arch_cpu_idle+0xa/0x10
[ 71.309899][ T0] default_idle_call+0x1e/0x40
[ 71.314673][ T0] do_idle+0x1c2/0x290
[ 71.318749][ T0] cpu_startup_entry+0x1b/0x20
[ 71.323515][ T0] start_secondary+0x168/0x1b0
[ 71.328287][ T0] secondary_startup_64+0xa4/0xb0
[ 71.333289][ T0]
[ 71.335609][ T0] Reported by Kernel Concurrency Sanitizer on:
[ 71.341761][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.5.0-rc1-syzkaller #0
[ 71.349646][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 71.359695][ T0] ==================================================================
[ 71.367757][ T0] Kernel panic - not syncing: panic_on_warn set ...
[ 71.374363][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.5.0-rc1-syzkaller #0
[ 71.382244][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 71.392296][ T0] Call Trace:
[ 71.395684][ T0]
[ 71.398546][ T0] dump_stack+0x11d/0x181
[ 71.402884][ T0] panic+0x210/0x640
[ 71.406816][ T0] ? vprintk_func+0x8d/0x140
[ 71.411460][ T0] kcsan_report.cold+0xc/0x15
[ 71.416154][ T0] kcsan_setup_watchpoint+0x2e2/0x380
[ 71.421527][ T0] __tsan_read8+0xc6/0x100
[ 71.425956][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 71.431420][ T0] tick_irq_enter+0x139/0x1c0
[ 71.436106][ T0] irq_enter+0x4f/0x60
[ 71.440200][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 71.445667][ T0] apic_timer_interrupt+0xf/0x20
[ 71.450603][ T0]
[ 71.453542][ T0] RIP: 0010:native_safe_halt+0xe/0x10
[ 71.458945][ T0] Code: cc cc cc cc cc cc cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d 1c 71 59 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 0c 71 59 00 fb f4 cc 55 48 89 e5 41 55 41 54 53 e8 a2 e9 90 fc e8 ed 84 ab fd 0f
[ 71.478553][ T0] RSP: 0018:ffffc90000cd3e70 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 71.486965][ T0] RAX: 0000000000000001 RBX: ffff88812b785040 RCX: ffffffff82548b75
[ 71.494936][ T0] RDX: 0000000000000000 RSI: ffffffff82548b7e RDI: 0000000000000005
[ 71.502912][ T0] RBP: ffffc90000cd3e90 R08: ffff88812b785040 R09: 0000ffff85a2d168
[ 71.510891][ T0] R10: 0000c90000cd3e80 R11: 0000ffff85a2d16f R12: 0000000000000001
[ 71.518978][ T0] R13: ffff88812b785040 R14: 0000000000000000 R15: 0000000000000000
[ 71.526973][ T0] ? debug_smp_processor_id+0x35/0x137
[ 71.532475][ T0] ? debug_smp_processor_id+0x3e/0x137
[ 71.537959][ T0] ? default_idle+0x26/0x180
[ 71.542560][ T0] arch_cpu_idle+0xa/0x10
[ 71.546889][ T0] default_idle_call+0x1e/0x40
[ 71.551661][ T0] do_idle+0x1c2/0x290
[ 71.555735][ T0] ? complete+0x44/0x50
[ 71.559905][ T0] cpu_startup_entry+0x1b/0x20
[ 71.564669][ T0] start_secondary+0x168/0x1b0
[ 71.569448][ T0] secondary_startup_64+0xa4/0xb0
[ 71.575880][ T0] Kernel Offset: disabled
[ 71.580205][ T0] Rebooting in 86400 seconds..