[[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2.
[ 42.413131][ T26] audit: type=1800 audit(1574057099.988:21): pid=7498 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2452 res=0
[ 42.463097][ T26] audit: type=1800 audit(1574057099.988:22): pid=7498 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 '10.128.0.242' (ECDSA) to the list of known hosts.
2019/11/18 06:05:12 fuzzer started
2019/11/18 06:05:13 dialing manager at 10.128.0.105:33487
2019/11/18 06:05:13 syscalls: 2566
2019/11/18 06:05:13 code coverage: enabled
2019/11/18 06:05:13 comparison tracing: enabled
2019/11/18 06:05:13 extra coverage: extra coverage is not supported by the kernel
2019/11/18 06:05:13 setuid sandbox: enabled
2019/11/18 06:05:13 namespace sandbox: enabled
2019/11/18 06:05:13 Android sandbox: /sys/fs/selinux/policy does not exist
2019/11/18 06:05:13 fault injection: enabled
2019/11/18 06:05:13 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/11/18 06:05:13 net packet injection: enabled
2019/11/18 06:05:13 net device setup: enabled
2019/11/18 06:05:13 concurrency sanitizer: enabled
2019/11/18 06:05:13 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 57.201107][ T0] ==================================================================
[ 57.209264][ T0] BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64
[ 57.218181][ T0]
[ 57.220515][ T0] write to 0xffffffff8603d008 of 8 bytes by interrupt on cpu 0:
[ 57.228143][ T0] tick_do_update_jiffies64+0x100/0x250
[ 57.233682][ T0] tick_sched_do_timer+0xd4/0xe0
[ 57.238621][ T0] tick_sched_timer+0x43/0xe0
[ 57.243292][ T0] __hrtimer_run_queues+0x274/0x5f0
[ 57.248487][ T0] hrtimer_interrupt+0x22a/0x480
[ 57.253421][ T0] smp_apic_timer_interrupt+0xdc/0x280
[ 57.258876][ T0] apic_timer_interrupt+0xf/0x20
[ 57.263813][ T0] kcsan_setup_watchpoint+0x1d4/0x460
[ 57.269187][ T0] __tsan_read1+0xc2/0x100
[ 57.273604][ T0] kallsyms_expand_symbol.constprop.0+0x103/0x160
[ 57.280067][ T0] kallsyms_lookup_name+0x7f/0x120
[ 57.285194][ T0] debugfs_write+0x14b/0x2d0
[ 57.289786][ T0] full_proxy_write+0xbd/0x100
[ 57.294542][ T0] __vfs_write+0x67/0xc0
[ 57.298771][ T0] vfs_write+0x18a/0x390
[ 57.303016][ T0] ksys_write+0xd5/0x1b0
[ 57.307251][ T0] __x64_sys_write+0x4c/0x60
[ 57.311842][ T0] do_syscall_64+0xcc/0x370
[ 57.316348][ T0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 57.322222][ T0]
[ 57.324723][ T0] read to 0xffffffff8603d008 of 8 bytes by task 0 on cpu 1:
[ 57.332001][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 57.337450][ T0] tick_irq_enter+0x139/0x1c0
[ 57.342117][ T0] irq_enter+0x4f/0x60
[ 57.346197][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 57.351649][ T0] apic_timer_interrupt+0xf/0x20
[ 57.356576][ T0] native_safe_halt+0xe/0x10
[ 57.361162][ T0] arch_cpu_idle+0xa/0x10
[ 57.365493][ T0] default_idle_call+0x1e/0x40
[ 57.370249][ T0] do_idle+0x1af/0x280
[ 57.374318][ T0] cpu_startup_entry+0x1b/0x20
[ 57.379078][ T0] start_secondary+0x168/0x1b0
[ 57.383836][ T0] secondary_startup_64+0xa4/0xb0
[ 57.388837][ T0]
[ 57.391166][ T0] Reported by Kernel Concurrency Sanitizer on:
[ 57.397314][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.4.0-rc7+ #0
[ 57.404408][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 57.414498][ T0] ==================================================================
[ 57.422568][ T0] Kernel panic - not syncing: panic_on_warn set ...
[ 57.429418][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.4.0-rc7+ #0
[ 57.436514][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 57.446566][ T0] Call Trace:
[ 57.449844][ T0]
[ 57.452693][ T0] dump_stack+0x11d/0x181
[ 57.457021][ T0] panic+0x210/0x640
[ 57.460910][ T0] ? vprintk_func+0x8d/0x140
[ 57.465496][ T0] kcsan_report.cold+0xc/0xd
[ 57.470087][ T0] kcsan_setup_watchpoint+0x3fe/0x460
[ 57.475460][ T0] __tsan_read8+0xc6/0x100
[ 57.479891][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 57.485355][ T0] tick_irq_enter+0x139/0x1c0
[ 57.490029][ T0] irq_enter+0x4f/0x60
[ 57.494099][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 57.499639][ T0] apic_timer_interrupt+0xf/0x20
[ 57.504563][ T0]
[ 57.507510][ T0] RIP: 0010:native_safe_halt+0xe/0x10
[ 57.512896][ 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
[ 57.532495][ T0] RSP: 0018:ffffc90000cd3e70 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13
[ 57.540898][ T0] RAX: 0000000000000001 RBX: ffff88812b38b0c0 RCX: ffffffff824edc99
[ 57.548967][ T0] RDX: 0000000000000000 RSI: ffffffff824edca7 RDI: 0000000000000005
[ 57.556942][ T0] RBP: ffffc90000cd3e90 R08: ffff88812b38b0c0 R09: 0000ffff857d1168
[ 57.565002][ T0] R10: 000000000002a3c0 R11: 0000ffff857d116f R12: 0000000000000001
[ 57.572981][ T0] R13: ffff88812b38b0c0 R14: 0000000000000000 R15: 0000000000000000
[ 57.580961][ T0] ? debug_smp_processor_id+0x39/0x172
[ 57.586416][ T0] ? debug_smp_processor_id+0x47/0x172
[ 57.591910][ T0] ? default_idle+0x26/0x180
[ 57.596495][ T0] arch_cpu_idle+0xa/0x10
[ 57.600821][ T0] default_idle_call+0x1e/0x40
[ 57.605577][ T0] do_idle+0x1af/0x280
[ 57.609640][ T0] ? complete+0x44/0x50
[ 57.613939][ T0] cpu_startup_entry+0x1b/0x20
[ 57.618701][ T0] start_secondary+0x168/0x1b0
[ 57.623463][ T0] secondary_startup_64+0xa4/0xb0
[ 57.629208][ T0] Kernel Offset: disabled
[ 57.633596][ T0] Rebooting in 86400 seconds..