[ 53.294115][ T25] audit: type=1800 audit(1573263673.824:27): pid=7866 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2469 res=0 [ 53.334588][ T25] audit: type=1800 audit(1573263673.824:28): pid=7866 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. [ 54.220309][ T25] audit: type=1800 audit(1573263674.804:29): pid=7866 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 [ 54.243688][ T25] audit: type=1800 audit(1573263674.804:30): pid=7866 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 '10.128.1.35' (ECDSA) to the list of known hosts. 2019/11/09 01:41:22 fuzzer started 2019/11/09 01:41:24 dialing manager at 10.128.0.105:41185 2019/11/09 01:41:25 syscalls: 2553 2019/11/09 01:41:25 code coverage: enabled 2019/11/09 01:41:25 comparison tracing: enabled 2019/11/09 01:41:25 extra coverage: extra coverage is not supported by the kernel 2019/11/09 01:41:25 setuid sandbox: enabled 2019/11/09 01:41:25 namespace sandbox: enabled 2019/11/09 01:41:25 Android sandbox: /sys/fs/selinux/policy does not exist 2019/11/09 01:41:25 fault injection: enabled 2019/11/09 01:41:25 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/11/09 01:41:25 net packet injection: enabled 2019/11/09 01:41:25 net device setup: enabled 2019/11/09 01:41:25 concurrency sanitizer: enabled 2019/11/09 01:41:25 devlink PCI setup: PCI device 0000:00:10.0 is not available syzkaller login: [ 68.064228][ T8036] KCSAN: could not find function: 'may_open' [ 68.508226][ C1] ================================================================== [ 68.516345][ C1] BUG: KCSAN: data-race in tick_nohz_idle_stop_tick / tick_sched_do_timer [ 68.527381][ C1] [ 68.529710][ C1] write to 0xffffffff85cb26d0 of 4 bytes by task 0 on cpu 0: [ 68.537065][ C1] tick_nohz_idle_stop_tick+0x525/0x670 [ 68.542593][ C1] do_idle+0x1a5/0x280 [ 68.546646][ C1] cpu_startup_entry+0x1b/0x20 [ 68.551403][ C1] rest_init+0xec/0xf6 [ 68.555462][ C1] arch_call_rest_init+0x17/0x37 [ 68.560406][ C1] start_kernel+0x838/0x85e [ 68.564901][ C1] x86_64_start_reservations+0x29/0x2b [ 68.570453][ C1] x86_64_start_kernel+0x72/0x76 [ 68.575440][ C1] secondary_startup_64+0xa4/0xb0 [ 68.580441][ C1] [ 68.582763][ C1] read to 0xffffffff85cb26d0 of 4 bytes by interrupt on cpu 1: [ 68.590297][ C1] tick_sched_do_timer+0x33/0xe0 [ 68.595499][ C1] tick_sched_timer+0x43/0xe0 [ 68.600169][ C1] __hrtimer_run_queues+0x274/0x5f0 [ 68.605352][ C1] hrtimer_interrupt+0x22a/0x480 [ 68.610282][ C1] smp_apic_timer_interrupt+0xdc/0x280 [ 68.615729][ C1] apic_timer_interrupt+0xf/0x20 [ 68.620650][ C1] kcsan_setup_watchpoint+0x205/0x410 [ 68.626436][ C1] __tsan_unaligned_write1+0x13d/0x1e0 [ 68.631881][ C1] kallsyms_expand_symbol.constprop.0+0xe8/0x160 [ 68.638242][ C1] kallsyms_lookup_name+0x7f/0x120 [ 68.643383][ C1] debugfs_write+0x14b/0x2d0 [ 68.647969][ C1] full_proxy_write+0xbd/0x100 [ 68.652721][ C1] __vfs_write+0x67/0xc0 [ 68.656946][ C1] vfs_write+0x18a/0x390 [ 68.661173][ C1] ksys_write+0xd5/0x1b0 [ 68.665425][ C1] __x64_sys_write+0x4c/0x60 [ 68.670001][ C1] do_syscall_64+0xcc/0x370 [ 68.674492][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 68.680360][ C1] [ 68.682669][ C1] Reported by Kernel Concurrency Sanitizer on: [ 68.688814][ C1] CPU: 1 PID: 8036 Comm: syz-executor Not tainted 5.4.0-rc6+ #0 [ 68.696462][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.706503][ C1] ================================================================== [ 68.714600][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 68.721170][ C1] CPU: 1 PID: 8036 Comm: syz-executor Not tainted 5.4.0-rc6+ #0 [ 68.728776][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.738918][ C1] Call Trace: [ 68.742202][ C1] [ 68.745181][ C1] dump_stack+0xf5/0x159 [ 68.749481][ C1] panic+0x210/0x640 [ 68.753432][ C1] ? vprintk_func+0x8d/0x140 [ 68.758018][ C1] kcsan_report.cold+0xc/0xe [ 68.762607][ C1] kcsan_setup_watchpoint+0x3fe/0x410 [ 68.767965][ C1] __tsan_read4+0x145/0x1f0 [ 68.772496][ C1] tick_sched_do_timer+0x33/0xe0 [ 68.777425][ C1] tick_sched_timer+0x43/0xe0 [ 68.782087][ C1] __hrtimer_run_queues+0x274/0x5f0 [ 68.787279][ C1] ? tick_sched_handle+0x100/0x100 [ 68.792380][ C1] hrtimer_interrupt+0x22a/0x480 [ 68.797313][ C1] smp_apic_timer_interrupt+0xdc/0x280 [ 68.802755][ C1] ? smp_reschedule_interrupt+0x71/0x1d0 [ 68.808373][ C1] apic_timer_interrupt+0xf/0x20 [ 68.813307][ C1] [ 68.816230][ C1] RIP: 0010:kcsan_setup_watchpoint+0x205/0x410 [ 68.822369][ C1] 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 [ 68.841957][ C1] RSP: 0018:ffffc900016d7b98 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 [ 68.850527][ C1] RAX: 8002c900016d7c4b RBX: 0000000000000001 RCX: ffffffff86046cd8 [ 68.858493][ C1] RDX: 0000000000000001 RSI: ffffffff824ef4b7 RDI: 0000000000000282 [ 68.866447][ C1] RBP: ffffc900016d7bd8 R08: ffff88812a22f040 R09: 00000000aaaaaaab [ 68.874511][ C1] R10: 0000000000000000 R11: 00000000aaaaaaab R12: ffffc900016d7c4b [ 68.882466][ C1] R13: 0000000000000001 R14: 0000000000000001 R15: 0000000000000069 [ 68.890435][ C1] ? debug_smp_processor_id+0x47/0x172 [ 68.895882][ C1] __tsan_unaligned_write1+0x13d/0x1e0 [ 68.901328][ C1] kallsyms_expand_symbol.constprop.0+0xe8/0x160 [ 68.907640][ C1] kallsyms_lookup_name+0x7f/0x120 [ 68.912743][ C1] ? __check_object_size+0x5f/0x346 [ 68.917939][ C1] ? strlen+0x3b/0x60 [ 68.921905][ C1] debugfs_write+0x14b/0x2d0 [ 68.926483][ C1] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 68.932728][ C1] ? refcount_inc_not_zero_checked+0xba/0x150 [ 68.938837][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 68.945064][ C1] ? debugfs_file_get+0xae/0x1e0 [ 68.949991][ C1] full_proxy_write+0xbd/0x100 [ 68.954746][ C1] __vfs_write+0x67/0xc0 [ 68.958972][ C1] ? full_proxy_poll+0xf0/0xf0 [ 68.963741][ C1] vfs_write+0x18a/0x390 [ 68.967978][ C1] ksys_write+0xd5/0x1b0 [ 68.972214][ C1] __x64_sys_write+0x4c/0x60 [ 68.976868][ C1] do_syscall_64+0xcc/0x370 [ 68.981449][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 68.987336][ C1] RIP: 0033:0x413cd0 [ 68.991228][ C1] 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 [ 69.010812][ C1] RSP: 002b:00007ffe0efc5ff8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 69.019208][ C1] RAX: ffffffffffffffda RBX: 0000000000000013 RCX: 0000000000413cd0 [ 69.027161][ C1] RDX: 0000000000000013 RSI: 0000000002255950 RDI: 0000000000000003 [ 69.035199][ C1] RBP: 0000000002255950 R08: 0000000000000100 R09: 0000000000000013 [ 69.043152][ C1] R10: 0000000000000011 R11: 0000000000000246 R12: 0000000000000013 [ 69.051120][ C1] R13: 0000000000000001 R14: 00007ffe0efc6070 R15: 0000000000000000 [ 69.060484][ C1] Kernel Offset: disabled [ 69.064808][ C1] Rebooting in 86400 seconds..