[....] 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.
[ 51.077791][ T26] kauditd_printk_skb: 7 callbacks suppressed
[ 51.077809][ T26] audit: type=1800 audit(1580930254.827:29): pid=7921 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
[ 51.104062][ T26] audit: type=1800 audit(1580930254.827:30): pid=7921 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 '10.128.10.12' (ECDSA) to the list of known hosts.
2020/02/05 19:17:44 fuzzer started
2020/02/05 19:17:46 dialing manager at 10.128.0.105:44419
2020/02/05 19:17:47 syscalls: 2904
2020/02/05 19:17:47 code coverage: enabled
2020/02/05 19:17:47 comparison tracing: enabled
2020/02/05 19:17:47 extra coverage: enabled
2020/02/05 19:17:47 setuid sandbox: enabled
2020/02/05 19:17:47 namespace sandbox: enabled
2020/02/05 19:17:47 Android sandbox: /sys/fs/selinux/policy does not exist
2020/02/05 19:17:47 fault injection: enabled
2020/02/05 19:17:47 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/02/05 19:17:47 net packet injection: enabled
2020/02/05 19:17:47 net device setup: enabled
2020/02/05 19:17:47 concurrency sanitizer: enabled
2020/02/05 19:17:47 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 65.457776][ T8093] KCSAN: could not find function: 'poll_schedule_timeout'
[ 66.498121][ T0] ==================================================================
[ 66.506280][ T0] BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64
[ 66.515199][ T0]
[ 66.517535][ T0] write to 0xffffffff8624c7c8 of 8 bytes by interrupt on cpu 1:
[ 66.525178][ T0] tick_do_update_jiffies64+0x100/0x250
[ 66.530808][ T0] tick_sched_do_timer+0xd4/0xe0
[ 66.535743][ T0] tick_sched_timer+0x43/0xe0
[ 66.540772][ T0] __hrtimer_run_queues+0x274/0x5f0
[ 66.545984][ T0] hrtimer_interrupt+0x22a/0x480
[ 66.550934][ T0] smp_apic_timer_interrupt+0xdc/0x280
[ 66.556388][ T0] apic_timer_interrupt+0xf/0x20
[ 66.561327][ T0] kcsan_setup_watchpoint+0x1d4/0x460
[ 66.566874][ T0] __tsan_read1+0xc2/0x100
[ 66.571288][ T0] strcmp+0x2b/0x70
[ 66.575099][ T0] kallsyms_lookup_name+0x91/0x120
[ 66.580213][ T0] debugfs_write+0x14b/0x2d0
[ 66.584799][ T0] full_proxy_write+0xbd/0x100
[ 66.589560][ T0] __vfs_write+0x67/0xc0
[ 66.593818][ T0] vfs_write+0x18a/0x390
[ 66.598063][ T0] ksys_write+0xd5/0x1b0
[ 66.602309][ T0] __x64_sys_write+0x4c/0x60
[ 66.607071][ T0] do_syscall_64+0xcc/0x3a0
[ 66.611583][ T0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 66.617460][ T0]
[ 66.619786][ T0] read to 0xffffffff8624c7c8 of 8 bytes by task 0 on cpu 0:
[ 66.627082][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 66.632540][ T0] tick_irq_enter+0x139/0x1c0
[ 66.637824][ T0] irq_enter+0x4f/0x60
[ 66.641893][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 66.647342][ T0] apic_timer_interrupt+0xf/0x20
[ 66.652281][ T0] native_safe_halt+0xe/0x10
[ 66.656870][ T0] arch_cpu_idle+0xa/0x10
[ 66.661203][ T0] default_idle_call+0x1e/0x40
[ 66.665979][ T0] do_idle+0x1c2/0x290
[ 66.670044][ T0] cpu_startup_entry+0x1b/0x20
[ 66.674804][ T0] rest_init+0xec/0xf6
[ 66.678873][ T0] arch_call_rest_init+0x17/0x37
[ 66.683810][ T0] start_kernel+0x838/0x85e
[ 66.688314][ T0] x86_64_start_reservations+0x29/0x2b
[ 66.693776][ T0] x86_64_start_kernel+0x72/0x76
[ 66.698725][ T0] secondary_startup_64+0xa4/0xb0
[ 66.703830][ T0]
[ 66.706148][ T0] Reported by Kernel Concurrency Sanitizer on:
[ 66.712386][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 66.720278][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 66.730319][ T0] ==================================================================
[ 66.738368][ T0] Kernel panic - not syncing: panic_on_warn set ...
[ 66.745225][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 66.753227][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 66.763290][ T0] Call Trace:
[ 66.766570][ T0]
[ 66.769500][ T0] dump_stack+0x11d/0x181
[ 66.773964][ T0] panic+0x210/0x640
[ 66.777884][ T0] ? vprintk_func+0x8d/0x140
[ 66.782488][ T0] kcsan_report.cold+0xc/0xd
[ 66.787126][ T0] kcsan_setup_watchpoint+0x3fe/0x460
[ 66.792511][ T0] __tsan_read8+0xc6/0x100
[ 66.797051][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 66.802545][ T0] tick_irq_enter+0x139/0x1c0
[ 66.807240][ T0] irq_enter+0x4f/0x60
[ 66.811331][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 66.817156][ T0] apic_timer_interrupt+0xf/0x20
[ 66.822213][ T0]
[ 66.825166][ T0] RIP: 0010:native_safe_halt+0xe/0x10
[ 66.830554][ T0] Code: cc cc cc cc cc cc cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d 4c e6 59 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 3c e6 59 00 fb f4 cc 55 48 89 e5 41 55 41 54 53 e8 d2 57 91 fc e8 fd da ab fd 0f
[ 66.850255][ T0] RSP: 0018:ffffffff85c03df8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 66.858683][ T0] RAX: 0000000000000000 RBX: ffffffff85c2b780 RCX: ffffffff82546c55
[ 66.866764][ T0] RDX: 0000000000000000 RSI: ffffffff82546c5e RDI: 0000000000000005
[ 66.874756][ T0] RBP: ffffffff85c03e18 R08: ffffffff85c2b780 R09: 0000ffff85a2d160
[ 66.882736][ T0] R10: 0000ffff85c03e08 R11: 0000ffff85a2d167 R12: 0000000000000000
[ 66.890711][ T0] R13: ffffffff85c2b780 R14: 0000000000000000 R15: 0000000000000000
[ 66.898799][ T0] ? debug_smp_processor_id+0x35/0x137
[ 66.904283][ T0] ? debug_smp_processor_id+0x3e/0x137
[ 66.909854][ T0] ? default_idle+0x26/0x180
[ 66.914461][ T0] arch_cpu_idle+0xa/0x10
[ 66.918829][ T0] default_idle_call+0x1e/0x40
[ 66.923628][ T0] do_idle+0x1c2/0x290
[ 66.927711][ T0] ? debug_smp_processor_id+0x43/0x137
[ 66.933282][ T0] cpu_startup_entry+0x1b/0x20
[ 66.938060][ T0] rest_init+0xec/0xf6
[ 66.942160][ T0] ? trace_event_define_fields_vector_free_moved+0xb4/0xb4
[ 66.949467][ T0] arch_call_rest_init+0x17/0x37
[ 66.954527][ T0] start_kernel+0x838/0x85e
[ 66.959054][ T0] x86_64_start_reservations+0x29/0x2b
[ 66.965002][ T0] x86_64_start_kernel+0x72/0x76
[ 66.969973][ T0] secondary_startup_64+0xa4/0xb0
[ 66.976491][ T0] Kernel Offset: disabled
[ 66.981413][ T0] Rebooting in 86400 seconds..