[ 51.221996][ T25] audit: type=1800 audit(1573453772.567:27): pid=7855 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2469 res=0 [ 51.244137][ T25] audit: type=1800 audit(1573453772.567:28): pid=7855 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[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 52.047136][ T25] audit: type=1800 audit(1573453773.467:29): pid=7855 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 [ 52.067580][ T25] audit: type=1800 audit(1573453773.467:30): pid=7855 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 '10.128.10.38' (ECDSA) to the list of known hosts. 2019/11/11 06:29:42 fuzzer started 2019/11/11 06:29:44 dialing manager at 10.128.0.105:33901 2019/11/11 06:29:44 syscalls: 2553 2019/11/11 06:29:44 code coverage: enabled 2019/11/11 06:29:44 comparison tracing: enabled 2019/11/11 06:29:44 extra coverage: extra coverage is not supported by the kernel 2019/11/11 06:29:44 setuid sandbox: enabled 2019/11/11 06:29:44 namespace sandbox: enabled 2019/11/11 06:29:44 Android sandbox: /sys/fs/selinux/policy does not exist 2019/11/11 06:29:44 fault injection: enabled 2019/11/11 06:29:44 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/11/11 06:29:44 net packet injection: enabled 2019/11/11 06:29:44 net device setup: enabled 2019/11/11 06:29:44 concurrency sanitizer: enabled 2019/11/11 06:29:44 devlink PCI setup: PCI device 0000:00:10.0 is not available syzkaller login: [ 68.364623][ C0] ================================================================== [ 68.372745][ C0] BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64 [ 68.381831][ C0] [ 68.384174][ C0] write to 0xffffffff86043008 of 8 bytes by task 0 on cpu 1: [ 68.391528][ C0] tick_do_update_jiffies64+0x100/0x250 [ 68.397063][ C0] tick_irq_enter+0x139/0x1c0 [ 68.401723][ C0] irq_enter+0x4f/0x60 [ 68.405780][ C0] smp_apic_timer_interrupt+0x55/0x280 [ 68.411312][ C0] apic_timer_interrupt+0xf/0x20 [ 68.416237][ C0] native_safe_halt+0xe/0x10 [ 68.420822][ C0] arch_cpu_idle+0x1f/0x30 [ 68.425237][ C0] default_idle_call+0x1e/0x40 [ 68.429981][ C0] do_idle+0x1af/0x280 [ 68.434042][ C0] cpu_startup_entry+0x1b/0x20 [ 68.438800][ C0] start_secondary+0x208/0x260 [ 68.443546][ C0] secondary_startup_64+0xa4/0xb0 [ 68.448540][ C0] [ 68.450853][ C0] read to 0xffffffff86043008 of 8 bytes by interrupt on cpu 0: [ 68.458376][ C0] tick_do_update_jiffies64+0x2b/0x250 [ 68.464260][ C0] tick_sched_do_timer+0xd4/0xe0 [ 68.469179][ C0] tick_sched_timer+0x43/0xe0 [ 68.473844][ C0] __hrtimer_run_queues+0x274/0x5f0 [ 68.479109][ C0] hrtimer_interrupt+0x22a/0x480 [ 68.484028][ C0] smp_apic_timer_interrupt+0xdc/0x280 [ 68.489474][ C0] apic_timer_interrupt+0xf/0x20 [ 68.494394][ C0] write_comp_data+0x1e/0x70 [ 68.498970][ C0] kallsyms_expand_symbol.constprop.0+0x111/0x160 [ 68.505380][ C0] kallsyms_lookup_name+0x7f/0x120 [ 68.510472][ C0] debugfs_write+0x14b/0x2d0 [ 68.515061][ C0] full_proxy_write+0xbd/0x100 [ 68.519807][ C0] __vfs_write+0x67/0xc0 [ 68.524033][ C0] vfs_write+0x18a/0x390 [ 68.528274][ C0] ksys_write+0xd5/0x1b0 [ 68.532500][ C0] __x64_sys_write+0x4c/0x60 [ 68.537111][ C0] do_syscall_64+0xcc/0x370 [ 68.541620][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 68.547585][ C0] [ 68.549902][ C0] Reported by Kernel Concurrency Sanitizer on: [ 68.556043][ C0] CPU: 0 PID: 8023 Comm: syz-executor Not tainted 5.4.0-rc6+ #0 [ 68.563651][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.574047][ C0] ================================================================== [ 68.582089][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 68.588671][ C0] CPU: 0 PID: 8023 Comm: syz-executor Not tainted 5.4.0-rc6+ #0 [ 68.596371][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.606405][ C0] Call Trace: [ 68.609672][ C0] [ 68.612530][ C0] dump_stack+0xf5/0x159 [ 68.616758][ C0] panic+0x210/0x640 [ 68.623942][ C0] ? vprintk_func+0x8d/0x140 [ 68.628525][ C0] kcsan_report.cold+0xc/0xe [ 68.633103][ C0] kcsan_setup_watchpoint+0x3fe/0x410 [ 68.638457][ C0] __tsan_read8+0x145/0x1f0 [ 68.643058][ C0] tick_do_update_jiffies64+0x2b/0x250 [ 68.648666][ C0] tick_sched_do_timer+0xd4/0xe0 [ 68.653620][ C0] tick_sched_timer+0x43/0xe0 [ 68.658289][ C0] __hrtimer_run_queues+0x274/0x5f0 [ 68.663483][ C0] ? tick_sched_handle+0x100/0x100 [ 68.668580][ C0] hrtimer_interrupt+0x22a/0x480 [ 68.673531][ C0] smp_apic_timer_interrupt+0xdc/0x280 [ 68.678974][ C0] ? smp_reschedule_interrupt+0x71/0x1d0 [ 68.684608][ C0] apic_timer_interrupt+0xf/0x20 [ 68.689534][ C0] [ 68.692462][ C0] RIP: 0010:write_comp_data+0x1e/0x70 [ 68.698091][ C0] Code: 48 89 34 d1 48 89 11 5d c3 0f 1f 00 65 4c 8b 04 25 40 6c 01 00 65 8b 05 e8 ce bb 7e a9 00 01 1f 00 75 51 41 8b 80 08 0a 00 00 <83> f8 03 75 45 49 8b 80 10 0a 00 00 45 8b 80 0c 0a 00 00 4c 8b 08 [ 68.717678][ C0] RSP: 0018:ffffc90001637be8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 68.726074][ C0] RAX: 0000000000000000 RBX: ffffffff855d4760 RCX: ffffffff81405421 [ 68.734027][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001 [ 68.741992][ C0] RBP: ffffc90001637bf0 R08: ffff88812a1f9000 R09: 00000000aaaaaaab [ 68.749943][ C0] R10: 0000000000000000 R11: 00000000aaaaaaab R12: 0000000000000000 [ 68.757938][ C0] R13: 0000000000000001 R14: ffffc90001637c5f R15: 0000000000000069 [ 68.765915][ C0] ? kallsyms_expand_symbol.constprop.0+0x111/0x160 [ 68.772490][ C0] ? __tsan_unaligned_write1+0x13d/0x1e0 [ 68.778110][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 68.784345][ C0] kallsyms_expand_symbol.constprop.0+0x111/0x160 [ 68.790746][ C0] kallsyms_lookup_name+0x7f/0x120 [ 68.795850][ C0] ? __check_object_size+0x5f/0x346 [ 68.801047][ C0] ? strlen+0x3b/0x60 [ 68.805101][ C0] debugfs_write+0x14b/0x2d0 [ 68.809691][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 68.816035][ C0] ? refcount_inc_not_zero_checked+0xba/0x150 [ 68.823652][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 68.829879][ C0] ? debugfs_file_get+0xae/0x1e0 [ 68.834802][ C0] full_proxy_write+0xbd/0x100 [ 68.839569][ C0] __vfs_write+0x67/0xc0 [ 68.843889][ C0] ? full_proxy_poll+0xf0/0xf0 [ 68.848645][ C0] vfs_write+0x18a/0x390 [ 68.852883][ C0] ksys_write+0xd5/0x1b0 [ 68.857115][ C0] __x64_sys_write+0x4c/0x60 [ 68.861798][ C0] do_syscall_64+0xcc/0x370 [ 68.866376][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 68.873466][ C0] RIP: 0033:0x413cd0 [ 68.877355][ C0] Code: b0 89 c8 f7 d8 eb ed b8 6e 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 83 3d 3d 43 66 00 00 75 14 b8 01 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 c4 1b 00 00 c3 48 83 ec 08 e8 ca fc ff ff [ 68.897495][ C0] RSP: 002b:00007fff6c94c998 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 68.906428][ C0] RAX: ffffffffffffffda RBX: 0000000000000018 RCX: 0000000000413cd0 [ 68.914403][ C0] RDX: 0000000000000018 RSI: 00000000016fe950 RDI: 0000000000000003 [ 68.922358][ C0] RBP: 00000000016fe950 R08: 0000000000000100 R09: 0000000000000018 [ 68.930397][ C0] R10: 0000000000000016 R11: 0000000000000246 R12: 0000000000000018 [ 68.938352][ C0] R13: 0000000000000001 R14: 00007fff6c94ca10 R15: 0000000000000000 [ 68.947803][ C0] Kernel Offset: disabled [ 68.952141][ C0] Rebooting in 86400 seconds..