[ 51.459062][ T26] audit: type=1800 audit(1573185767.861:27): pid=7858 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2469 res=0 [ 51.485074][ T26] audit: type=1800 audit(1573185767.861:28): pid=7858 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. [ 52.285063][ T26] audit: type=1800 audit(1573185768.731:29): pid=7858 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 [ 52.312616][ T26] audit: type=1800 audit(1573185768.731:30): pid=7858 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 '10.128.15.217' (ECDSA) to the list of known hosts. 2019/11/08 04:02:58 fuzzer started 2019/11/08 04:03:00 dialing manager at 10.128.0.105:38105 2019/11/08 04:03:00 syscalls: 2553 2019/11/08 04:03:00 code coverage: enabled 2019/11/08 04:03:00 comparison tracing: enabled 2019/11/08 04:03:00 extra coverage: extra coverage is not supported by the kernel 2019/11/08 04:03:00 setuid sandbox: enabled 2019/11/08 04:03:00 namespace sandbox: enabled 2019/11/08 04:03:00 Android sandbox: /sys/fs/selinux/policy does not exist 2019/11/08 04:03:00 fault injection: enabled 2019/11/08 04:03:00 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/11/08 04:03:00 net packet injection: enabled 2019/11/08 04:03:00 net device setup: enabled 2019/11/08 04:03:00 concurrency sanitizer: enabled 2019/11/08 04:03:00 devlink PCI setup: PCI device 0000:00:10.0 is not available syzkaller login: [ 72.372650][ C0] ================================================================== [ 72.380782][ C0] BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64 [ 72.389689][ C0] [ 72.392070][ C0] write to 0xffffffff86043008 of 8 bytes by task 0 on cpu 1: [ 72.399423][ C0] tick_do_update_jiffies64+0x100/0x250 [ 72.405041][ C0] tick_irq_enter+0x139/0x1c0 [ 72.409701][ C0] irq_enter+0x4f/0x60 [ 72.413755][ C0] smp_apic_timer_interrupt+0x55/0x280 [ 72.419208][ C0] apic_timer_interrupt+0xf/0x20 [ 72.424167][ C0] native_safe_halt+0xe/0x10 [ 72.428738][ C0] arch_cpu_idle+0x1f/0x30 [ 72.433136][ C0] default_idle_call+0x1e/0x40 [ 72.437886][ C0] do_idle+0x1af/0x280 [ 72.441936][ C0] cpu_startup_entry+0x1b/0x20 [ 72.446682][ C0] start_secondary+0x208/0x260 [ 72.451426][ C0] secondary_startup_64+0xa4/0xb0 [ 72.456438][ C0] [ 72.458757][ C0] read to 0xffffffff86043008 of 8 bytes by interrupt on cpu 0: [ 72.466283][ C0] tick_do_update_jiffies64+0x2b/0x250 [ 72.471784][ C0] tick_sched_do_timer+0xd4/0xe0 [ 72.476704][ C0] tick_sched_timer+0x43/0xe0 [ 72.481359][ C0] __hrtimer_run_queues+0x274/0x5f0 [ 72.486535][ C0] hrtimer_interrupt+0x22a/0x480 [ 72.491464][ C0] smp_apic_timer_interrupt+0xdc/0x280 [ 72.496905][ C0] apic_timer_interrupt+0xf/0x20 [ 72.501998][ C0] kcsan_setup_watchpoint+0x205/0x410 [ 72.507359][ C0] __tsan_read1+0x13f/0x1e0 [ 72.511848][ C0] kallsyms_expand_symbol.constprop.0+0x103/0x160 [ 72.518255][ C0] kallsyms_lookup_name+0x7f/0x120 [ 72.523348][ C0] debugfs_write+0x14b/0x2d0 [ 72.527955][ C0] full_proxy_write+0xbd/0x100 [ 72.532725][ C0] __vfs_write+0x67/0xc0 [ 72.536946][ C0] vfs_write+0x18a/0x390 [ 72.541168][ C0] ksys_write+0xd5/0x1b0 [ 72.545390][ C0] __x64_sys_write+0x4c/0x60 [ 72.549969][ C0] do_syscall_64+0xcc/0x370 [ 72.554454][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 72.560319][ C0] [ 72.562635][ C0] Reported by Kernel Concurrency Sanitizer on: [ 72.568788][ C0] CPU: 0 PID: 8026 Comm: syz-executor Not tainted 5.4.0-rc6+ #0 [ 72.576395][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.586431][ C0] ================================================================== [ 72.594478][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 72.601046][ C0] CPU: 0 PID: 8026 Comm: syz-executor Not tainted 5.4.0-rc6+ #0 [ 72.608658][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.618691][ C0] Call Trace: [ 72.621965][ C0] [ 72.624811][ C0] dump_stack+0xf5/0x159 [ 72.629039][ C0] panic+0x210/0x640 [ 72.632920][ C0] ? vprintk_func+0x8d/0x140 [ 72.637497][ C0] kcsan_report.cold+0xc/0xe [ 72.642161][ C0] kcsan_setup_watchpoint+0x3fe/0x410 [ 72.647526][ C0] __tsan_read8+0x145/0x1f0 [ 72.652015][ C0] tick_do_update_jiffies64+0x2b/0x250 [ 72.657458][ C0] tick_sched_do_timer+0xd4/0xe0 [ 72.662383][ C0] tick_sched_timer+0x43/0xe0 [ 72.667045][ C0] __hrtimer_run_queues+0x274/0x5f0 [ 72.673276][ C0] ? tick_sched_handle+0x100/0x100 [ 72.678370][ C0] hrtimer_interrupt+0x22a/0x480 [ 72.683298][ C0] smp_apic_timer_interrupt+0xdc/0x280 [ 72.688751][ C0] ? smp_reschedule_interrupt+0x71/0x1d0 [ 72.694368][ C0] apic_timer_interrupt+0xf/0x20 [ 72.699279][ C0] [ 72.702206][ C0] RIP: 0010:kcsan_setup_watchpoint+0x205/0x410 [ 72.708433][ 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 [ 72.728028][ C0] RSP: 0018:ffffc9000165fb98 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 [ 72.736433][ C0] RAX: 0002ffff855d4463 RBX: 0000000000000000 RCX: ffffffff86046cc0 [ 72.744436][ C0] RDX: 0000000000000001 RSI: ffffffff824ef4b7 RDI: 0000000000000282 [ 72.752409][ C0] RBP: ffffc9000165fbd8 R08: ffff888126f640c0 R09: 00000000aaaaaaab [ 72.760380][ C0] R10: 0000000000000000 R11: 00000000aaaaaaab R12: ffffffff855d4463 [ 72.768339][ C0] R13: 0000000000000001 R14: 0000000000000001 R15: 000000000000004c [ 72.776310][ C0] ? debug_smp_processor_id+0x47/0x172 [ 72.781759][ C0] __tsan_read1+0x13f/0x1e0 [ 72.786253][ C0] kallsyms_expand_symbol.constprop.0+0x103/0x160 [ 72.792663][ C0] kallsyms_lookup_name+0x7f/0x120 [ 72.797771][ C0] ? __check_object_size+0x5f/0x346 [ 72.802965][ C0] ? strlen+0x3b/0x60 [ 72.806965][ C0] debugfs_write+0x14b/0x2d0 [ 72.811556][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 72.817806][ C0] ? refcount_inc_not_zero_checked+0xba/0x150 [ 72.823867][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 72.830090][ C0] ? debugfs_file_get+0xae/0x1e0 [ 72.835023][ C0] full_proxy_write+0xbd/0x100 [ 72.839771][ C0] __vfs_write+0x67/0xc0 [ 72.844005][ C0] ? full_proxy_poll+0xf0/0xf0 [ 72.848751][ C0] vfs_write+0x18a/0x390 [ 72.852978][ C0] ksys_write+0xd5/0x1b0 [ 72.857205][ C0] __x64_sys_write+0x4c/0x60 [ 72.861781][ C0] do_syscall_64+0xcc/0x370 [ 72.866271][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 72.872151][ C0] RIP: 0033:0x413cd0 [ 72.876046][ 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 [ 72.895631][ C0] RSP: 002b:00007ffe856fb6c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 72.904028][ C0] RAX: ffffffffffffffda RBX: 0000000000000017 RCX: 0000000000413cd0 [ 72.911988][ C0] RDX: 0000000000000017 RSI: 0000000000b82950 RDI: 0000000000000003 [ 72.919948][ C0] RBP: 0000000000b82950 R08: 0000000000000100 R09: 0000000000000017 [ 72.927905][ C0] R10: 0000000000000015 R11: 0000000000000246 R12: 0000000000000017 [ 72.935901][ C0] R13: 0000000000000001 R14: 00007ffe856fb740 R15: 0000000000000000 [ 72.945444][ C0] Kernel Offset: disabled [ 72.949771][ C0] Rebooting in 86400 seconds..