[info] Using makefile-style concurrent boot in runlevel 2. [ 42.815446][ T26] audit: type=1800 audit(1573652719.676:21): pid=7374 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2452 res=0 [ 42.854039][ T26] audit: type=1800 audit(1573652719.676:22): pid=7374 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="motd" dev="sda1" ino=2480 res=0 [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.1.32' (ECDSA) to the list of known hosts. 2019/11/13 13:45:30 fuzzer started 2019/11/13 13:45:32 dialing manager at 10.128.0.105:45453 2019/11/13 13:45:32 syscalls: 2566 2019/11/13 13:45:32 code coverage: enabled 2019/11/13 13:45:32 comparison tracing: enabled 2019/11/13 13:45:32 extra coverage: extra coverage is not supported by the kernel 2019/11/13 13:45:32 setuid sandbox: enabled 2019/11/13 13:45:32 namespace sandbox: enabled 2019/11/13 13:45:32 Android sandbox: /sys/fs/selinux/policy does not exist 2019/11/13 13:45:32 fault injection: enabled 2019/11/13 13:45:32 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/11/13 13:45:32 net packet injection: enabled 2019/11/13 13:45:32 net device setup: enabled 2019/11/13 13:45:32 concurrency sanitizer: enabled 2019/11/13 13:45:32 devlink PCI setup: PCI device 0000:00:10.0 is not available syzkaller login: [ 60.804062][ C0] ================================================================== [ 60.812213][ C0] BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64 [ 60.821111][ C0] [ 60.823415][ C0] write to 0xffffffff86046008 of 8 bytes by task 0 on cpu 1: [ 60.830762][ C0] tick_do_update_jiffies64+0x100/0x250 [ 60.836283][ C0] tick_irq_enter+0x139/0x1c0 [ 60.840946][ C0] irq_enter+0x4f/0x60 [ 60.844993][ C0] smp_apic_timer_interrupt+0x55/0x280 [ 60.850424][ C0] apic_timer_interrupt+0xf/0x20 [ 60.855334][ C0] native_safe_halt+0xe/0x10 [ 60.859896][ C0] arch_cpu_idle+0x1f/0x30 [ 60.864288][ C0] default_idle_call+0x1e/0x40 [ 60.869064][ C0] do_idle+0x1af/0x280 [ 60.873108][ C0] cpu_startup_entry+0x1b/0x20 [ 60.877845][ C0] start_secondary+0x208/0x260 [ 60.882584][ C0] secondary_startup_64+0xa4/0xb0 [ 60.887605][ C0] [ 60.889910][ C0] read to 0xffffffff86046008 of 8 bytes by interrupt on cpu 0: [ 60.897427][ C0] tick_do_update_jiffies64+0x2b/0x250 [ 60.902858][ C0] tick_sched_do_timer+0xd4/0xe0 [ 60.907771][ C0] tick_sched_timer+0x43/0xe0 [ 60.912420][ C0] __hrtimer_run_queues+0x274/0x5f0 [ 60.917591][ C0] hrtimer_interrupt+0x22a/0x480 [ 60.922506][ C0] smp_apic_timer_interrupt+0xdc/0x280 [ 60.927940][ C0] apic_timer_interrupt+0xf/0x20 [ 60.932848][ C0] __tsan_read1+0x97/0x100 [ 60.937239][ C0] kallsyms_expand_symbol.constprop.0+0x103/0x160 [ 60.943624][ C0] kallsyms_lookup_name+0x7f/0x120 [ 60.948830][ C0] debugfs_write+0x14b/0x2d0 [ 60.953421][ C0] full_proxy_write+0xbd/0x100 [ 60.958156][ C0] __vfs_write+0x67/0xc0 [ 60.962370][ C0] vfs_write+0x18a/0x390 [ 60.966585][ C0] ksys_write+0xd5/0x1b0 [ 60.970802][ C0] __x64_sys_write+0x4c/0x60 [ 60.975376][ C0] do_syscall_64+0xcc/0x370 [ 60.979852][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 60.985721][ C0] [ 60.988019][ C0] Reported by Kernel Concurrency Sanitizer on: [ 60.994273][ C0] CPU: 0 PID: 7540 Comm: syz-executor Not tainted 5.4.0-rc7+ #0 [ 61.001872][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.011908][ C0] ================================================================== [ 61.019950][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 61.026599][ C0] CPU: 0 PID: 7540 Comm: syz-executor Not tainted 5.4.0-rc7+ #0 [ 61.034199][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.044229][ C0] Call Trace: [ 61.047510][ C0] [ 61.050353][ C0] dump_stack+0x11d/0x181 [ 61.054659][ C0] panic+0x210/0x640 [ 61.058533][ C0] ? vprintk_func+0x8d/0x140 [ 61.063098][ C0] kcsan_report.cold+0xc/0x1a [ 61.067753][ C0] kcsan_setup_watchpoint+0x3fe/0x460 [ 61.073105][ C0] __tsan_read8+0xc6/0x100 [ 61.077502][ C0] tick_do_update_jiffies64+0x2b/0x250 [ 61.082938][ C0] tick_sched_do_timer+0xd4/0xe0 [ 61.087853][ C0] tick_sched_timer+0x43/0xe0 [ 61.092509][ C0] __hrtimer_run_queues+0x274/0x5f0 [ 61.097685][ C0] ? tick_sched_handle+0x100/0x100 [ 61.102772][ C0] hrtimer_interrupt+0x22a/0x480 [ 61.107694][ C0] smp_apic_timer_interrupt+0xdc/0x280 [ 61.113127][ C0] ? do_IRQ+0xcb/0x180 [ 61.117176][ C0] apic_timer_interrupt+0xf/0x20 [ 61.122095][ C0] [ 61.125013][ C0] RIP: 0010:__tsan_read1+0x97/0x100 [ 61.130189][ C0] Code: a9 00 01 1f 00 74 50 48 c7 c0 b0 6f 02 00 65 48 03 05 15 49 ae 7e 8b 50 04 85 d2 7f 59 8b 50 08 85 d2 7f 31 80 78 0c 00 75 2b <48> 81 ff 00 50 a0 85 74 22 48 c7 c0 ff ff ff ff 65 48 0f c1 05 30 [ 61.149766][ C0] RSP: 0018:ffffc9000175fbf0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 [ 61.158150][ C0] RAX: ffff888122f97ae8 RBX: ffffffff855db7fa RCX: ffffffff86049d10 [ 61.166101][ C0] RDX: 0000000000000000 RSI: ffffffff81406991 RDI: ffffffff855db7fa [ 61.174063][ C0] RBP: ffffc9000175fbf0 R08: 0000000000000000 R09: 0000ffff855db7fa [ 61.182021][ C0] R10: 0000000000000000 R11: 0000888122f97c1f R12: 000000000000006c [ 61.190054][ C0] R13: 0000000000000001 R14: ffffc9000175fc62 R15: 0000000000000066 [ 61.198014][ C0] ? kallsyms_expand_symbol.constprop.0+0xf1/0x160 [ 61.204497][ C0] kallsyms_expand_symbol.constprop.0+0x103/0x160 [ 61.210888][ C0] kallsyms_lookup_name+0x7f/0x120 [ 61.215974][ C0] ? __tsan_read1+0xc2/0x100 [ 61.220541][ C0] ? strlen+0x3b/0x60 [ 61.224503][ C0] debugfs_write+0x14b/0x2d0 [ 61.229085][ C0] ? __read_once_size.constprop.0+0x12/0x20 [ 61.234954][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 61.241170][ C0] ? refcount_inc_not_zero_checked+0xba/0x150 [ 61.247216][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 61.253435][ C0] ? debugfs_file_get+0xae/0x1e0 [ 61.258351][ C0] full_proxy_write+0xbd/0x100 [ 61.263094][ C0] __vfs_write+0x67/0xc0 [ 61.267316][ C0] ? full_proxy_poll+0xf0/0xf0 [ 61.272055][ C0] vfs_write+0x18a/0x390 [ 61.276283][ C0] ksys_write+0xd5/0x1b0 [ 61.280519][ C0] __x64_sys_write+0x4c/0x60 [ 61.285089][ C0] do_syscall_64+0xcc/0x370 [ 61.289573][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 61.295438][ C0] RIP: 0033:0x413cd0 [ 61.299315][ 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 [ 61.318894][ C0] RSP: 002b:00007fff919b31d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 61.327296][ C0] RAX: ffffffffffffffda RBX: 000000000000000d RCX: 0000000000413cd0 [ 61.335244][ C0] RDX: 000000000000000d RSI: 0000000001516950 RDI: 0000000000000003 [ 61.343191][ C0] RBP: 0000000001516950 R08: 0000000000000100 R09: 000000000000000d [ 61.351138][ C0] R10: 000000000000000b R11: 0000000000000246 R12: 000000000000000d [ 61.359097][ C0] R13: 0000000000000001 R14: 00007fff919b3250 R15: 0000000000000000 [ 61.368302][ C0] Kernel Offset: disabled [ 61.372623][ C0] Rebooting in 86400 seconds..