[[36minfo[39;49m] Using makefile-style concurrent boot in runlevel 2.
[ 41.269337][ T26] audit: type=1800 audit(1573739572.026:21): pid=7493 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2452 res=0
[ 41.311663][ T26] audit: type=1800 audit(1573739572.026:22): pid=7493 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 '10.128.0.32' (ECDSA) to the list of known hosts.
2019/11/14 13:53:03 fuzzer started
2019/11/14 13:53:05 dialing manager at 10.128.0.105:45453
2019/11/14 13:53:05 syscalls: 2566
2019/11/14 13:53:05 code coverage: enabled
2019/11/14 13:53:05 comparison tracing: enabled
2019/11/14 13:53:05 extra coverage: extra coverage is not supported by the kernel
2019/11/14 13:53:05 setuid sandbox: enabled
2019/11/14 13:53:05 namespace sandbox: enabled
2019/11/14 13:53:05 Android sandbox: /sys/fs/selinux/policy does not exist
2019/11/14 13:53:05 fault injection: enabled
2019/11/14 13:53:05 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/11/14 13:53:05 net packet injection: enabled
2019/11/14 13:53:05 net device setup: enabled
2019/11/14 13:53:05 concurrency sanitizer: enabled
2019/11/14 13:53:05 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 57.419188][ T0] ==================================================================
[ 57.427340][ T0] BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64
[ 57.436255][ T0]
[ 57.438578][ T0] write to 0xffffffff86046008 of 8 bytes by interrupt on cpu 0:
[ 57.446208][ T0] tick_do_update_jiffies64+0x100/0x250
[ 57.451743][ T0] tick_sched_do_timer+0xd4/0xe0
[ 57.456675][ T0] tick_sched_timer+0x43/0xe0
[ 57.461342][ T0] __hrtimer_run_queues+0x274/0x5f0
[ 57.466528][ T0] hrtimer_interrupt+0x22a/0x480
[ 57.471462][ T0] smp_apic_timer_interrupt+0xdc/0x280
[ 57.476915][ T0] apic_timer_interrupt+0xf/0x20
[ 57.481848][ T0] kcsan_setup_watchpoint+0x1d4/0x460
[ 57.487215][ T0] __tsan_unaligned_write1+0xc0/0x100
[ 57.492586][ T0] kallsyms_expand_symbol.constprop.0+0xe8/0x160
[ 57.498904][ T0] kallsyms_lookup_name+0x7f/0x120
[ 57.504005][ T0] debugfs_write+0x14b/0x2d0
[ 57.508591][ T0] full_proxy_write+0xbd/0x100
[ 57.513362][ T0] __vfs_write+0x67/0xc0
[ 57.517594][ T0] vfs_write+0x18a/0x390
[ 57.521830][ T0] ksys_write+0xd5/0x1b0
[ 57.526075][ T0] __x64_sys_write+0x4c/0x60
[ 57.530774][ T0] do_syscall_64+0xcc/0x370
[ 57.535288][ T0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 57.541161][ T0]
[ 57.543490][ T0] read to 0xffffffff86046008 of 8 bytes by task 0 on cpu 1:
[ 57.550780][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 57.556238][ T0] tick_irq_enter+0x139/0x1c0
[ 57.560918][ T0] irq_enter+0x4f/0x60
[ 57.564987][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 57.570443][ T0] apic_timer_interrupt+0xf/0x20
[ 57.575374][ T0] native_safe_halt+0xe/0x10
[ 57.579960][ T0] arch_cpu_idle+0x1f/0x30
[ 57.584370][ T0] default_idle_call+0x1e/0x40
[ 57.589126][ T0] do_idle+0x1af/0x280
[ 57.593189][ T0] cpu_startup_entry+0x1b/0x20
[ 57.597944][ T0] start_secondary+0x208/0x260
[ 57.602702][ T0] secondary_startup_64+0xa4/0xb0
[ 57.607703][ T0]
[ 57.610017][ T0] Reported by Kernel Concurrency Sanitizer on:
[ 57.616163][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.4.0-rc7+ #0
[ 57.623252][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 57.633314][ T0] ==================================================================
[ 57.641377][ T0] Kernel panic - not syncing: panic_on_warn set ...
[ 57.647963][ T0] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.4.0-rc7+ #0
[ 57.655060][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 57.665106][ T0] Call Trace:
[ 57.668383][ T0]
[ 57.671238][ T0] dump_stack+0x11d/0x181
[ 57.675568][ T0] panic+0x210/0x640
[ 57.679464][ T0] ? vprintk_func+0x8d/0x140
[ 57.684053][ T0] kcsan_report.cold+0xc/0x1a
[ 57.688726][ T0] kcsan_setup_watchpoint+0x3fe/0x460
[ 57.694099][ T0] __tsan_read8+0xc6/0x100
[ 57.698515][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 57.703966][ T0] tick_irq_enter+0x139/0x1c0
[ 57.708640][ T0] irq_enter+0x4f/0x60
[ 57.712706][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 57.718158][ T0] ? smp_reschedule_interrupt+0x71/0x1d0
[ 57.723794][ T0] apic_timer_interrupt+0xf/0x20
[ 57.728712][ T0]
[ 57.731651][ T0] RIP: 0010:native_safe_halt+0xe/0x10
[ 57.737023][ T0] Code: 90 90 90 90 90 90 90 90 90 90 90 90 e9 07 00 00 00 0f 00 2d 6c 52 47 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 5c 52 47 00 fb f4 90 55 48 89 e5 41 55 41 54 53 e8 d2 9a 9f fc e8 bd 3f b5 fd 0f
[ 57.756617][ T0] RSP: 0018:ffffc90000cd3e48 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 57.765022][ T0] RAX: 0000000000000016 RBX: ffff88812b38b0c0 RCX: ffffffff86049ce8
[ 57.772981][ T0] RDX: 0000000000000000 RSI: 0000c900016d7c4d RDI: ffffffff85a56378
[ 57.780949][ T0] RBP: ffffc90000cd3e80 R08: 8002c900016d7c4d R09: 0000ffff85a56378
[ 57.788914][ T0] R10: 0000c900016d7c4d R11: 0000ffff85a5637f R12: 0000000000000001
[ 57.796886][ T0] R13: ffff88812b38b0c0 R14: 0000000000000000 R15: 0000000000000000
[ 57.804876][ T0] ? default_idle+0x50/0x230
[ 57.809463][ T0] arch_cpu_idle+0x1f/0x30
[ 57.813876][ T0] default_idle_call+0x1e/0x40
[ 57.818641][ T0] do_idle+0x1af/0x280
[ 57.822713][ T0] ? debug_smp_processor_id+0x47/0x172
[ 57.828170][ T0] cpu_startup_entry+0x1b/0x20
[ 57.832936][ T0] start_secondary+0x208/0x260
[ 57.837702][ T0] secondary_startup_64+0xa4/0xb0
[ 57.881170][ T0] Kernel Offset: disabled
[ 57.885499][ T0] Rebooting in 86400 seconds..