[ 51.337296][ T25] audit: type=1800 audit(1573297726.468:27): pid=7909 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2469 res=0 [ 51.419675][ T25] audit: type=1800 audit(1573297726.608:28): pid=7909 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. [ 52.234407][ T25] audit: type=1800 audit(1573297727.428:29): pid=7909 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 [ 52.255048][ T25] audit: type=1800 audit(1573297727.428:30): pid=7909 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 '10.128.10.17' (ECDSA) to the list of known hosts. 2019/11/09 11:08:58 fuzzer started 2019/11/09 11:09:00 dialing manager at 10.128.0.105:41185 2019/11/09 11:09:00 syscalls: 2553 2019/11/09 11:09:00 code coverage: enabled 2019/11/09 11:09:00 comparison tracing: enabled 2019/11/09 11:09:00 extra coverage: extra coverage is not supported by the kernel 2019/11/09 11:09:00 setuid sandbox: enabled 2019/11/09 11:09:00 namespace sandbox: enabled 2019/11/09 11:09:00 Android sandbox: /sys/fs/selinux/policy does not exist 2019/11/09 11:09:00 fault injection: enabled 2019/11/09 11:09:00 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/11/09 11:09:00 net packet injection: enabled 2019/11/09 11:09:00 net device setup: enabled 2019/11/09 11:09:00 concurrency sanitizer: enabled 2019/11/09 11:09:00 devlink PCI setup: PCI device 0000:00:10.0 is not available syzkaller login: [ 65.843118][ T8077] KCSAN: could not find function: 'poll_schedule_timeout' [ 70.170764][ C0] ================================================================== [ 70.178949][ C0] BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64 [ 70.187855][ C0] [ 70.190177][ C0] write to 0xffffffff86043008 of 8 bytes by task 0 on cpu 1: [ 70.197546][ C0] tick_do_update_jiffies64+0x100/0x250 [ 70.203077][ C0] tick_irq_enter+0x139/0x1c0 [ 70.207745][ C0] irq_enter+0x4f/0x60 [ 70.211936][ C0] smp_apic_timer_interrupt+0x55/0x280 [ 70.217376][ C0] apic_timer_interrupt+0xf/0x20 [ 70.222296][ C0] native_safe_halt+0xe/0x10 [ 70.226870][ C0] arch_cpu_idle+0x1f/0x30 [ 70.231266][ C0] default_idle_call+0x1e/0x40 [ 70.236021][ C0] do_idle+0x1af/0x280 [ 70.240072][ C0] cpu_startup_entry+0x1b/0x20 [ 70.244819][ C0] start_secondary+0x208/0x260 [ 70.249565][ C0] secondary_startup_64+0xa4/0xb0 [ 70.254560][ C0] [ 70.256870][ C0] read to 0xffffffff86043008 of 8 bytes by interrupt on cpu 0: [ 70.264406][ C0] tick_do_update_jiffies64+0x2b/0x250 [ 70.269845][ C0] tick_sched_do_timer+0xd4/0xe0 [ 70.274765][ C0] tick_sched_timer+0x43/0xe0 [ 70.279420][ C0] __hrtimer_run_queues+0x274/0x5f0 [ 70.284602][ C0] hrtimer_interrupt+0x22a/0x480 [ 70.289524][ C0] smp_apic_timer_interrupt+0xdc/0x280 [ 70.294970][ C0] apic_timer_interrupt+0xf/0x20 [ 70.299888][ C0] kcsan_setup_watchpoint+0x205/0x410 [ 70.305237][ C0] __tsan_read1+0x13f/0x1e0 [ 70.309725][ C0] kallsyms_expand_symbol.constprop.0+0x103/0x160 [ 70.316153][ C0] kallsyms_lookup_name+0x7f/0x120 [ 70.321245][ C0] debugfs_write+0x14b/0x2d0 [ 70.325816][ C0] full_proxy_write+0xbd/0x100 [ 70.330557][ C0] __vfs_write+0x67/0xc0 [ 70.334784][ C0] vfs_write+0x18a/0x390 [ 70.339008][ C0] ksys_write+0xd5/0x1b0 [ 70.343228][ C0] __x64_sys_write+0x4c/0x60 [ 70.347800][ C0] do_syscall_64+0xcc/0x370 [ 70.352289][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 70.358159][ C0] [ 70.360463][ C0] Reported by Kernel Concurrency Sanitizer on: [ 70.366601][ C0] CPU: 0 PID: 8077 Comm: syz-executor Not tainted 5.4.0-rc6+ #0 [ 70.374390][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.384434][ C0] ================================================================== [ 70.392474][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 70.399043][ C0] CPU: 0 PID: 8077 Comm: syz-executor Not tainted 5.4.0-rc6+ #0 [ 70.406646][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.416678][ C0] Call Trace: [ 70.419939][ C0] [ 70.422785][ C0] dump_stack+0xf5/0x159 [ 70.427011][ C0] panic+0x210/0x640 [ 70.430898][ C0] ? vprintk_func+0x8d/0x140 [ 70.436004][ C0] kcsan_report.cold+0xc/0xe [ 70.440771][ C0] kcsan_setup_watchpoint+0x3fe/0x410 [ 70.446127][ C0] __tsan_read8+0x145/0x1f0 [ 70.450629][ C0] tick_do_update_jiffies64+0x2b/0x250 [ 70.456085][ C0] tick_sched_do_timer+0xd4/0xe0 [ 70.461009][ C0] tick_sched_timer+0x43/0xe0 [ 70.465678][ C0] __hrtimer_run_queues+0x274/0x5f0 [ 70.470863][ C0] ? tick_sched_handle+0x100/0x100 [ 70.475960][ C0] hrtimer_interrupt+0x22a/0x480 [ 70.480888][ C0] smp_apic_timer_interrupt+0xdc/0x280 [ 70.486339][ C0] ? smp_reschedule_interrupt+0x71/0x1d0 [ 70.491960][ C0] apic_timer_interrupt+0xf/0x20 [ 70.496871][ C0] [ 70.499797][ C0] RIP: 0010:kcsan_setup_watchpoint+0x205/0x410 [ 70.505935][ C0] Code: 5f 5d c3 83 ff 03 0f 85 ae fe ff ff bf 03 00 00 00 e8 7f 21 00 00 48 83 3d e7 c5 52 04 00 0f 84 24 01 00 00 48 8b 7d d0 57 9d <0f> 1f 44 00 00 eb c0 65 8b 05 75 ce ae 7e a9 00 01 1f 00 0f 84 4b [ 70.525520][ C0] RSP: 0018:ffffc900016f7b98 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 [ 70.533928][ C0] RAX: 0002ffff855d43ea RBX: 0000000000000000 RCX: ffffffff86046cc0 [ 70.541891][ C0] RDX: 0000000000000001 RSI: ffffffff824ef4b7 RDI: 0000000000000282 [ 70.549844][ C0] RBP: ffffc900016f7bd8 R08: ffff8881229cf080 R09: 00000000aaaaaaab [ 70.557798][ C0] R10: 0000000000000000 R11: 00000000aaaaaaab R12: ffffffff855d43ea [ 70.565749][ C0] R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000030 [ 70.573746][ C0] ? debug_smp_processor_id+0x47/0x172 [ 70.579192][ C0] __tsan_read1+0x13f/0x1e0 [ 70.583691][ C0] kallsyms_expand_symbol.constprop.0+0x103/0x160 [ 70.590099][ C0] kallsyms_lookup_name+0x7f/0x120 [ 70.595208][ C0] ? __check_object_size+0x5f/0x346 [ 70.600399][ C0] ? strlen+0x3b/0x60 [ 70.604368][ C0] debugfs_write+0x14b/0x2d0 [ 70.608943][ C0] ? __read_once_size.constprop.0+0x12/0x20 [ 70.614824][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 70.621060][ C0] ? refcount_inc_not_zero_checked+0xba/0x150 [ 70.627127][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 70.633350][ C0] ? debugfs_file_get+0xae/0x1e0 [ 70.638273][ C0] full_proxy_write+0xbd/0x100 [ 70.643032][ C0] __vfs_write+0x67/0xc0 [ 70.647256][ C0] ? full_proxy_poll+0xf0/0xf0 [ 70.652002][ C0] vfs_write+0x18a/0x390 [ 70.656228][ C0] ksys_write+0xd5/0x1b0 [ 70.660456][ C0] __x64_sys_write+0x4c/0x60 [ 70.665035][ C0] do_syscall_64+0xcc/0x370 [ 70.669523][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 70.675402][ C0] RIP: 0033:0x413cd0 [ 70.679284][ 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 [ 70.698875][ C0] RSP: 002b:00007ffcd9a3f548 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 70.707267][ C0] RAX: ffffffffffffffda RBX: 000000000000000b RCX: 0000000000413cd0 [ 70.715393][ C0] RDX: 000000000000000b RSI: 00000000012fb950 RDI: 0000000000000003 [ 70.723346][ C0] RBP: 00000000012fb950 R08: 0000000000000100 R09: 000000000000000b [ 70.731302][ C0] R10: 0000000000000009 R11: 0000000000000246 R12: 000000000000000b [ 70.739258][ C0] R13: 0000000000000001 R14: 00007ffcd9a3f5c0 R15: 0000000000000000 [ 70.748601][ C0] Kernel Offset: disabled [ 70.752926][ C0] Rebooting in 86400 seconds..