[ 51.143476][ T27] audit: type=1800 audit(1581329518.357:27): pid=7972 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2469 res=0
[ 51.164407][ T27] audit: type=1800 audit(1581329518.357:28): pid=7972 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2450 res=0
[....] 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.
[ 52.146584][ T27] audit: type=1800 audit(1581329519.407:29): pid=7972 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
[ 52.166918][ T27] audit: type=1800 audit(1581329519.417:30): pid=7972 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 '10.128.0.120' (ECDSA) to the list of known hosts.
2020/02/10 10:12:08 fuzzer started
2020/02/10 10:12:10 dialing manager at 10.128.0.105:36345
2020/02/10 10:12:11 syscalls: 2904
2020/02/10 10:12:11 code coverage: enabled
2020/02/10 10:12:11 comparison tracing: enabled
2020/02/10 10:12:11 extra coverage: enabled
2020/02/10 10:12:11 setuid sandbox: enabled
2020/02/10 10:12:11 namespace sandbox: enabled
2020/02/10 10:12:11 Android sandbox: /sys/fs/selinux/policy does not exist
2020/02/10 10:12:11 fault injection: enabled
2020/02/10 10:12:11 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/02/10 10:12:11 net packet injection: enabled
2020/02/10 10:12:11 net device setup: enabled
2020/02/10 10:12:11 concurrency sanitizer: enabled
2020/02/10 10:12:11 devlink PCI setup: PCI device 0000:00:10.0 is not available
syzkaller login: [ 68.798833][ T0] ==================================================================
[ 68.807160][ T0] BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64
[ 68.816205][ T0]
[ 68.818551][ T0] write to 0xffffffff8624d7c8 of 8 bytes by interrupt on cpu 1:
[ 68.826204][ T0] tick_do_update_jiffies64+0x100/0x250
[ 68.831758][ T0] tick_sched_do_timer+0xd4/0xe0
[ 68.836791][ T0] tick_sched_timer+0x43/0xe0
[ 68.841496][ T0] __hrtimer_run_queues+0x274/0x5f0
[ 68.846711][ T0] hrtimer_interrupt+0x22a/0x480
[ 68.851663][ T0] smp_apic_timer_interrupt+0xdc/0x280
[ 68.857306][ T0] apic_timer_interrupt+0xf/0x20
[ 68.862259][ T0] kcsan_setup_watchpoint+0x211/0x380
[ 68.867649][ T0] __tsan_read1+0xc2/0x100
[ 68.872069][ T0] kallsyms_expand_symbol.constprop.0+0x70/0x160
[ 68.878540][ T0] kallsyms_lookup_name+0x7f/0x120
[ 68.883658][ T0] debugfs_write+0x16c/0x320
[ 68.888273][ T0] full_proxy_write+0xbd/0x100
[ 68.893042][ T0] __vfs_write+0x67/0xc0
[ 68.897428][ T0] vfs_write+0x18a/0x390
[ 68.901741][ T0] ksys_write+0xd5/0x1b0
[ 68.905998][ T0] __x64_sys_write+0x4c/0x60
[ 68.910695][ T0] do_syscall_64+0xcc/0x3a0
[ 68.915219][ T0] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 68.921107][ T0]
[ 68.923447][ T0] read to 0xffffffff8624d7c8 of 8 bytes by task 0 on cpu 0:
[ 68.930926][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 68.936409][ T0] tick_irq_enter+0x139/0x1c0
[ 68.941096][ T0] irq_enter+0x4f/0x60
[ 68.945290][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 68.950865][ T0] apic_timer_interrupt+0xf/0x20
[ 68.955819][ T0] native_safe_halt+0xe/0x10
[ 68.960543][ T0] arch_cpu_idle+0xa/0x10
[ 68.964901][ T0] default_idle_call+0x1e/0x40
[ 68.969694][ T0] do_idle+0x1c2/0x290
[ 68.973788][ T0] cpu_startup_entry+0x1b/0x20
[ 68.978589][ T0] rest_init+0xec/0xf6
[ 68.982760][ T0] arch_call_rest_init+0x17/0x37
[ 68.987709][ T0] start_kernel+0x838/0x85e
[ 68.992222][ T0] x86_64_start_reservations+0x29/0x2b
[ 68.997693][ T0] x86_64_start_kernel+0x72/0x76
[ 69.002697][ T0] secondary_startup_64+0xa4/0xb0
[ 69.007726][ T0]
[ 69.010192][ T0] Reported by Kernel Concurrency Sanitizer on:
[ 69.016364][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 69.024262][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 69.034327][ T0] ==================================================================
[ 69.042401][ T0] Kernel panic - not syncing: panic_on_warn set ...
[ 69.049014][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0
[ 69.057015][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 69.067087][ T0] Call Trace:
[ 69.070374][ T0]
[ 69.073361][ T0] dump_stack+0x11d/0x181
[ 69.077712][ T0] panic+0x210/0x640
[ 69.081628][ T0] ? vprintk_func+0x8d/0x140
[ 69.086237][ T0] kcsan_report.cold+0xc/0x15
[ 69.090931][ T0] kcsan_setup_watchpoint+0x2e2/0x380
[ 69.096327][ T0] __tsan_read8+0xc6/0x100
[ 69.100781][ T0] tick_do_update_jiffies64+0x2b/0x250
[ 69.106263][ T0] tick_irq_enter+0x139/0x1c0
[ 69.111094][ T0] irq_enter+0x4f/0x60
[ 69.115174][ T0] smp_apic_timer_interrupt+0x55/0x280
[ 69.120641][ T0] apic_timer_interrupt+0xf/0x20
[ 69.125587][ T0]
[ 69.128643][ T0] RIP: 0010:native_safe_halt+0xe/0x10
[ 69.134052][ 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
[ 69.153665][ T0] RSP: 0018:ffffffff85c03df8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13
[ 69.162183][ T0] RAX: 0000000000000000 RBX: ffffffff85c2b780 RCX: ffffffff82548b75
[ 69.170293][ T0] RDX: 0000000000000000 RSI: ffffffff82548b7e RDI: 0000000000000005
[ 69.178278][ T0] RBP: ffffffff85c03e18 R08: ffffffff85c2b780 R09: 0000ffff85a2d160
[ 69.186352][ T0] R10: 0000ffff85c03e08 R11: 0000ffff85a2d167 R12: 0000000000000000
[ 69.194354][ T0] R13: ffffffff85c2b780 R14: 0000000000000000 R15: 0000000000000000
[ 69.202448][ T0] ? debug_smp_processor_id+0x35/0x137
[ 69.207927][ T0] ? debug_smp_processor_id+0x3e/0x137
[ 69.213409][ T0] ? default_idle+0x26/0x180
[ 69.218011][ T0] arch_cpu_idle+0xa/0x10
[ 69.223267][ T0] default_idle_call+0x1e/0x40
[ 69.228048][ T0] do_idle+0x1c2/0x290
[ 69.232138][ T0] ? debug_smp_processor_id+0x43/0x137
[ 69.237732][ T0] cpu_startup_entry+0x1b/0x20
[ 69.242504][ T0] rest_init+0xec/0xf6
[ 69.246598][ T0] ? trace_event_define_fields_vector_free_moved+0xb4/0xb4
[ 69.253816][ T0] arch_call_rest_init+0x17/0x37
[ 69.258766][ T0] start_kernel+0x838/0x85e
[ 69.263294][ T0] x86_64_start_reservations+0x29/0x2b
[ 69.268771][ T0] x86_64_start_kernel+0x72/0x76
[ 69.273739][ T0] secondary_startup_64+0xa4/0xb0
[ 69.359895][ T0] Kernel Offset: disabled
[ 69.364318][ T0] Rebooting in 86400 seconds..