[ 43.115442][ T26] audit: type=1800 audit(1574145289.927:21): pid=7403 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2452 res=0
[ 43.164848][ T26] audit: type=1800 audit(1574145289.937:22): pid=7403 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.
[ 44.209768][ T7469] sshd (7469) used greatest stack depth: 10128 bytes left
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
Debian GNU/Linux 7 syzkaller ttyS0
Warning: Permanently added '10.128.0.120' (ECDSA) to the list of known hosts.
2019/11/19 06:34:59 fuzzer started
2019/11/19 06:35:00 dialing manager at 10.128.0.105:33487
2019/11/19 06:35:00 syscalls: 2566
2019/11/19 06:35:00 code coverage: enabled
2019/11/19 06:35:00 comparison tracing: enabled
2019/11/19 06:35:00 extra coverage: extra coverage is not supported by the kernel
2019/11/19 06:35:00 setuid sandbox: enabled
2019/11/19 06:35:00 namespace sandbox: enabled
2019/11/19 06:35:00 Android sandbox: /sys/fs/selinux/policy does not exist
2019/11/19 06:35:00 fault injection: enabled
2019/11/19 06:35:00 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/11/19 06:35:00 net packet injection: enabled
2019/11/19 06:35:00 net device setup: enabled
2019/11/19 06:35:00 concurrency sanitizer: enabled
2019/11/19 06:35:00 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 65.915556][ T0] ==================================================================
[ 65.923713][ T0] BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64
[ 65.932625][ T0]
[ 65.934948][ T0] write to 0xffffffff8603d008 of 8 bytes by interrupt on cpu 1:
[ 65.942570][ T0] tick_do_update_jiffies64+0x100/0x250
[ 65.948111][ T0] tick_sched_do_timer+0xd4/0xe0
[ 65.953038][ T0] tick_sched_timer+0x43/0xe0
[ 65.957710][ T0] __hrtimer_run_queues+0x274/0x5f0
[ 65.962905][ T0] hrtimer_interrupt+0x22a/0x480
[ 65.967921][ T0] smp_apic_timer_interrupt+0xdc/0x280
[ 65.973399][ T0] apic_timer_interrupt+0xf/0x20
[ 65.978329][ T0] kcsan_setup_watchpoint+0x1d4/0x460
[ 65.983695][ T0] __tsan_read1+0xc2/0x100
[ 65.988107][ T0] kallsyms_expand_symbol.constprop.0+0x103/0x160
[ 65.994513][ T0] kallsyms_lookup_name+0x7f/0x120
[ 65.999618][ T0] debugfs_write+0x14b/0x2d0
[ 66.004200][ T0] full_proxy_write+0xbd/0x100
[ 66.008949][ T0] __vfs_write+0x67/0xc0
[ 66.013178][ T0] vfs_write+0x18a/0x390
[ 66.017410][ T0] ksys_write+0xd5/0x1b0
[ 66.021641][ T0] __x64_sys_write+0x4c/0x60
[ 66.026222][ T0] do_syscall_64+0xcc/0x370
[ 66.030713][ T0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 66.036585][ T0]
[ 66.038906][ T0] read to 0xffffffff8603d008 of 8 bytes by task 0 on cpu 0:
[ 66.046179][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 66.051632][ T0] tick_irq_enter+0x139/0x1c0
[ 66.056298][ T0] irq_enter+0x4f/0x60
[ 66.060359][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 66.065805][ T0] apic_timer_interrupt+0xf/0x20
[ 66.070736][ T0] native_safe_halt+0xe/0x10
[ 66.075316][ T0] arch_cpu_idle+0xa/0x10
[ 66.079636][ T0] default_idle_call+0x1e/0x40
[ 66.084392][ T0] do_idle+0x1af/0x280
[ 66.088454][ T0] cpu_startup_entry+0x1b/0x20
[ 66.093206][ T0] rest_init+0xec/0xf6
[ 66.097280][ T0] arch_call_rest_init+0x17/0x37
[ 66.102210][ T0] start_kernel+0x838/0x85e
[ 66.106705][ T0] x86_64_start_reservations+0x29/0x2b
[ 66.112167][ T0] x86_64_start_kernel+0x72/0x76
[ 66.117093][ T0] secondary_startup_64+0xa4/0xb0
[ 66.122104][ T0]
[ 66.124414][ T0] Reported by Kernel Concurrency Sanitizer on:
[ 66.130560][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.0-rc7+ #0
[ 66.137839][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 66.147884][ T0] ==================================================================
[ 66.155941][ T0] Kernel panic - not syncing: panic_on_warn set ...
[ 66.162532][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.4.0-rc7+ #0
[ 66.169622][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 66.179668][ T0] Call Trace:
[ 66.182939][ T0]
[ 66.185786][ T0] dump_stack+0x11d/0x181
[ 66.190405][ T0] panic+0x210/0x640
[ 66.194297][ T0] ? vprintk_func+0x8d/0x140
[ 66.198895][ T0] kcsan_report.cold+0xc/0xd
[ 66.203487][ T0] kcsan_setup_watchpoint+0x3fe/0x460
[ 66.208871][ T0] __tsan_read8+0xc6/0x100
[ 66.213283][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 66.218740][ T0] tick_irq_enter+0x139/0x1c0
[ 66.223413][ T0] irq_enter+0x4f/0x60
[ 66.227473][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 66.232930][ T0] apic_timer_interrupt+0xf/0x20
[ 66.237851][ T0]
[ 66.240786][ T0] RIP: 0010:native_safe_halt+0xe/0x10
[ 66.246157][ T0] Code: 90 90 90 90 90 90 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d fc c9 48 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d ec c9 48 00 fb f4 90 55 48 89 e5 41 55 41 54 53 e8 82 89 9f fc e8 8d 30 b5 fd 0f
[ 66.265925][ T0] RSP: 0018:ffffffff85a03df8 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
[ 66.274332][ T0] RAX: 0000000000000000 RBX: ffffffff85a2b780 RCX: ffffffff824edc99
[ 66.282298][ T0] RDX: 0000000000000000 RSI: ffffffff824edca7 RDI: 0000000000000005
[ 66.290260][ T0] RBP: ffffffff85a03e18 R08: ffffffff85a2b780 R09: 0000ffff857d1160
[ 66.298234][ T0] R10: 0000c900015d7c58 R11: 0000ffff857d1167 R12: 0000000000000000
[ 66.306201][ T0] R13: ffffffff85a2b780 R14: 0000000000000000 R15: 0000000000000000
[ 66.314193][ T0] ? debug_smp_processor_id+0x39/0x172
[ 66.319663][ T0] ? debug_smp_processor_id+0x47/0x172
[ 66.325132][ T0] ? default_idle+0x26/0x180
[ 66.329752][ T0] arch_cpu_idle+0xa/0x10
[ 66.334080][ T0] default_idle_call+0x1e/0x40
[ 66.338844][ T0] do_idle+0x1af/0x280
[ 66.342925][ T0] cpu_startup_entry+0x1b/0x20
[ 66.347716][ T0] rest_init+0xec/0xf6
[ 66.351881][ T0] ? trace_event_define_fields_vector_free_moved+0xb4/0xb4
[ 66.359075][ T0] arch_call_rest_init+0x17/0x37
[ 66.364008][ T0] start_kernel+0x838/0x85e
[ 66.368509][ T0] x86_64_start_reservations+0x29/0x2b
[ 66.373969][ T0] x86_64_start_kernel+0x72/0x76
[ 66.378914][ T0] secondary_startup_64+0xa4/0xb0
[ 66.385213][ T0] Kernel Offset: disabled
[ 66.389567][ T0] Rebooting in 86400 seconds..