[....] 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.
[ 53.503765][ T27] kauditd_printk_skb: 6 callbacks suppressed
[ 53.503782][ T27] audit: type=1800 audit(1581174555.251:29): pid=7726 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2465 res=0
[ 53.530301][ T27] audit: type=1800 audit(1581174555.251:30): pid=7726 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2456 res=0
Debian GNU/Linux 7 syzkaller ttyS0
Warning: Permanently added '10.128.0.108' (ECDSA) to the list of known hosts.
2020/02/08 15:09:22 fuzzer started
2020/02/08 15:09:23 dialing manager at 10.128.0.105:41103
2020/02/08 15:09:23 syscalls: 2904
2020/02/08 15:09:23 code coverage: enabled
2020/02/08 15:09:23 comparison tracing: enabled
2020/02/08 15:09:23 extra coverage: enabled
2020/02/08 15:09:23 setuid sandbox: enabled
2020/02/08 15:09:23 namespace sandbox: enabled
2020/02/08 15:09:23 Android sandbox: /sys/fs/selinux/policy does not exist
2020/02/08 15:09:23 fault injection: enabled
2020/02/08 15:09:23 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/02/08 15:09:23 net packet injection: enabled
2020/02/08 15:09:23 net device setup: enabled
2020/02/08 15:09:23 concurrency sanitizer: enabled
2020/02/08 15:09:23 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 63.795241][ T0] ==================================================================
[ 63.803431][ T0] BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64
[ 63.812354][ T0]
[ 63.814687][ T0] write to 0xffffffff8624d7c8 of 8 bytes by interrupt on cpu 1:
[ 63.822317][ T0] tick_do_update_jiffies64+0x100/0x250
[ 63.827883][ T0] tick_sched_do_timer+0xd4/0xe0
[ 63.832824][ T0] tick_sched_timer+0x43/0xe0
[ 63.837513][ T0] __hrtimer_run_queues+0x274/0x5f0
[ 63.842721][ T0] hrtimer_interrupt+0x22a/0x480
[ 63.847674][ T0] smp_apic_timer_interrupt+0xdc/0x280
[ 63.853133][ T0] apic_timer_interrupt+0xf/0x20
[ 63.858063][ T0] kcsan_setup_watchpoint+0x211/0x380
[ 63.863439][ T0] __tsan_read1+0xc2/0x100
[ 63.867860][ T0] kallsyms_expand_symbol.constprop.0+0x70/0x160
[ 63.874199][ T0] kallsyms_lookup_name+0x7f/0x120
[ 63.879302][ T0] debugfs_write+0x16c/0x320
[ 63.883899][ T0] full_proxy_write+0xbd/0x100
[ 63.888662][ T0] __vfs_write+0x67/0xc0
[ 63.892899][ T0] vfs_write+0x18a/0x390
[ 63.897156][ T0] ksys_write+0xd5/0x1b0
[ 63.901405][ T0] __x64_sys_write+0x4c/0x60
[ 63.906000][ T0] do_syscall_64+0xcc/0x3a0
[ 63.910506][ T0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 63.916517][ T0]
[ 63.918847][ T0] read to 0xffffffff8624d7c8 of 8 bytes by task 0 on cpu 0:
[ 63.926142][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 63.931601][ T0] tick_irq_enter+0x139/0x1c0
[ 63.936273][ T0] irq_enter+0x4f/0x60
[ 63.940345][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 63.945801][ T0] apic_timer_interrupt+0xf/0x20
[ 63.950735][ T0] native_safe_halt+0xe/0x10
[ 63.955328][ T0] arch_cpu_idle+0xa/0x10
[ 63.959657][ T0] default_idle_call+0x1e/0x40
[ 63.964418][ T0] do_idle+0x1c2/0x290
[ 63.968495][ T0] cpu_startup_entry+0x1b/0x20
[ 63.973253][ T0] rest_init+0xec/0xf6
[ 63.977319][ T0] arch_call_rest_init+0x17/0x37
[ 63.982264][ T0] start_kernel+0x838/0x85e
[ 63.986765][ T0] x86_64_start_reservations+0x29/0x2b
[ 63.992224][ T0] x86_64_start_kernel+0x72/0x76
[ 63.997175][ T0] secondary_startup_64+0xa4/0xb0
[ 64.002187][ T0]
[ 64.004511][ T0] Reported by Kernel Concurrency Sanitizer on:
[ 64.010674][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 64.018559][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 64.028611][ T0] ==================================================================
[ 64.036675][ T0] Kernel panic - not syncing: panic_on_warn set ...
[ 64.043272][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 64.051162][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 64.061210][ T0] Call Trace:
[ 64.064484][ T0]
[ 64.067353][ T0] dump_stack+0x11d/0x181
[ 64.071685][ T0] panic+0x210/0x640
[ 64.075582][ T0] ? vprintk_func+0x8d/0x140
[ 64.080346][ T0] kcsan_report.cold+0xc/0x15
[ 64.085036][ T0] kcsan_setup_watchpoint+0x2e2/0x380
[ 64.090407][ T0] __tsan_read8+0xc6/0x100
[ 64.094840][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 64.100302][ T0] tick_irq_enter+0x139/0x1c0
[ 64.104984][ T0] irq_enter+0x4f/0x60
[ 64.109075][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 64.114558][ T0] apic_timer_interrupt+0xf/0x20
[ 64.119495][ T0]
[ 64.122432][ T0] RIP: 0010:native_safe_halt+0xe/0x10
[ 64.127817][ 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
[ 64.147426][ T0] RSP: 0018:ffffffff85c03df8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 64.155843][ T0] RAX: 0000000000000000 RBX: ffffffff85c2b780 RCX: ffffffff82548b75
[ 64.163899][ T0] RDX: 0000000000000000 RSI: ffffffff82548b7e RDI: 0000000000000005
[ 64.171877][ T0] RBP: ffffffff85c03e18 R08: ffffffff85c2b780 R09: 0000ffff85a2d160
[ 64.179891][ T0] R10: 0000ffff85c03e08 R11: 0000ffff85a2d167 R12: 0000000000000000
[ 64.187862][ T0] R13: ffffffff85c2b780 R14: 0000000000000000 R15: 0000000000000000
[ 64.195881][ T0] ? debug_smp_processor_id+0x35/0x137
[ 64.201342][ T0] ? debug_smp_processor_id+0x3e/0x137
[ 64.206817][ T0] ? default_idle+0x26/0x180
[ 64.211419][ T0] arch_cpu_idle+0xa/0x10
[ 64.215764][ T0] default_idle_call+0x1e/0x40
[ 64.220539][ T0] do_idle+0x1c2/0x290
[ 64.224616][ T0] ? debug_smp_processor_id+0x43/0x137
[ 64.230084][ T0] cpu_startup_entry+0x1b/0x20
[ 64.234857][ T0] rest_init+0xec/0xf6
[ 64.238943][ T0] ? trace_event_define_fields_vector_free_moved+0xb4/0xb4
[ 64.246148][ T0] arch_call_rest_init+0x17/0x37
[ 64.251095][ T0] start_kernel+0x838/0x85e
[ 64.255604][ T0] x86_64_start_reservations+0x29/0x2b
[ 64.261074][ T0] x86_64_start_kernel+0x72/0x76
[ 64.266032][ T0] secondary_startup_64+0xa4/0xb0
[ 64.364814][ T0] Kernel Offset: disabled
[ 64.369152][ T0] Rebooting in 86400 seconds..