[info] Using makefile-style concurrent boot in runlevel 2. [ 48.002919][ T26] audit: type=1800 audit(1573680920.460:21): pid=7529 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2452 res=0 [ 48.052632][ T26] audit: type=1800 audit(1573680920.460:22): pid=7529 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 '10.128.0.94' (ECDSA) to the list of known hosts. 2019/11/13 21:35:33 fuzzer started 2019/11/13 21:35:35 dialing manager at 10.128.0.105:45453 2019/11/13 21:35:35 syscalls: 2566 2019/11/13 21:35:35 code coverage: enabled 2019/11/13 21:35:35 comparison tracing: enabled 2019/11/13 21:35:35 extra coverage: extra coverage is not supported by the kernel 2019/11/13 21:35:35 setuid sandbox: enabled 2019/11/13 21:35:35 namespace sandbox: enabled 2019/11/13 21:35:35 Android sandbox: /sys/fs/selinux/policy does not exist 2019/11/13 21:35:35 fault injection: enabled 2019/11/13 21:35:35 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/11/13 21:35:35 net packet injection: enabled 2019/11/13 21:35:35 net device setup: enabled 2019/11/13 21:35:35 concurrency sanitizer: enabled 2019/11/13 21:35:35 devlink PCI setup: PCI device 0000:00:10.0 is not available syzkaller login: [ 66.352669][ C0] ================================================================== [ 66.360800][ C0] BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64 [ 66.369700][ C0] [ 66.372007][ C0] write to 0xffffffff86046008 of 8 bytes by task 0 on cpu 1: [ 66.379373][ C0] tick_do_update_jiffies64+0x100/0x250 [ 66.384894][ C0] tick_irq_enter+0x139/0x1c0 [ 66.389555][ C0] irq_enter+0x4f/0x60 [ 66.393605][ C0] smp_apic_timer_interrupt+0x55/0x280 [ 66.399051][ C0] apic_timer_interrupt+0xf/0x20 [ 66.403974][ C0] native_safe_halt+0xe/0x10 [ 66.408539][ C0] arch_cpu_idle+0x1f/0x30 [ 66.412954][ C0] default_idle_call+0x1e/0x40 [ 66.417698][ C0] do_idle+0x1af/0x280 [ 66.421743][ C0] cpu_startup_entry+0x1b/0x20 [ 66.426484][ C0] start_secondary+0x208/0x260 [ 66.431241][ C0] secondary_startup_64+0xa4/0xb0 [ 66.436234][ C0] [ 66.438554][ C0] read to 0xffffffff86046008 of 8 bytes by interrupt on cpu 0: [ 66.446091][ C0] tick_do_update_jiffies64+0x2b/0x250 [ 66.451528][ C0] tick_sched_do_timer+0xd4/0xe0 [ 66.456439][ C0] tick_sched_timer+0x43/0xe0 [ 66.461091][ C0] __hrtimer_run_queues+0x274/0x5f0 [ 66.466261][ C0] hrtimer_interrupt+0x22a/0x480 [ 66.471175][ C0] smp_apic_timer_interrupt+0xdc/0x280 [ 66.476615][ C0] apic_timer_interrupt+0xf/0x20 [ 66.481529][ C0] __tsan_unaligned_write1+0x81/0x100 [ 66.486892][ C0] kallsyms_expand_symbol.constprop.0+0x140/0x160 [ 66.493282][ C0] kallsyms_lookup_name+0x7f/0x120 [ 66.498368][ C0] debugfs_write+0x14b/0x2d0 [ 66.502937][ C0] full_proxy_write+0xbd/0x100 [ 66.507676][ C0] __vfs_write+0x67/0xc0 [ 66.511892][ C0] vfs_write+0x18a/0x390 [ 66.516110][ C0] ksys_write+0xd5/0x1b0 [ 66.520329][ C0] __x64_sys_write+0x4c/0x60 [ 66.524898][ C0] do_syscall_64+0xcc/0x370 [ 66.529394][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 66.535255][ C0] [ 66.537555][ C0] Reported by Kernel Concurrency Sanitizer on: [ 66.543686][ C0] CPU: 0 PID: 7698 Comm: syz-executor Not tainted 5.4.0-rc7+ #0 [ 66.551286][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.561318][ C0] ================================================================== [ 66.569356][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 66.575930][ C0] CPU: 0 PID: 7698 Comm: syz-executor Not tainted 5.4.0-rc7+ #0 [ 66.583529][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.593582][ C0] Call Trace: [ 66.596853][ C0] [ 66.599698][ C0] dump_stack+0x11d/0x181 [ 66.604200][ C0] panic+0x210/0x640 [ 66.608079][ C0] ? vprintk_func+0x8d/0x140 [ 66.612669][ C0] kcsan_report.cold+0xc/0x1a [ 66.617344][ C0] kcsan_setup_watchpoint+0x3fe/0x460 [ 66.622700][ C0] __tsan_read8+0xc6/0x100 [ 66.627100][ C0] tick_do_update_jiffies64+0x2b/0x250 [ 66.632550][ C0] tick_sched_do_timer+0xd4/0xe0 [ 66.637482][ C0] tick_sched_timer+0x43/0xe0 [ 66.642142][ C0] __hrtimer_run_queues+0x274/0x5f0 [ 66.647333][ C0] ? tick_sched_handle+0x100/0x100 [ 66.652612][ C0] hrtimer_interrupt+0x22a/0x480 [ 66.657555][ C0] smp_apic_timer_interrupt+0xdc/0x280 [ 66.662990][ C0] ? do_IRQ+0xcb/0x180 [ 66.667040][ C0] apic_timer_interrupt+0xf/0x20 [ 66.671949][ C0] [ 66.674877][ C0] RIP: 0010:__tsan_unaligned_write1+0x81/0x100 [ 66.681099][ C0] Code: 7b 48 83 c1 08 48 39 c8 75 cc 65 8b 05 e0 b2 ae 7e a9 00 01 1f 00 74 53 48 c7 c0 b0 6f 02 00 65 48 03 05 1a 4a ae 7e 8b 50 04 <85> d2 7f 5f 8b 50 08 85 d2 7f 34 80 78 0c 00 75 2e 48 81 ff 00 50 [ 66.700680][ C0] RSP: 0018:ffffc90001707bf0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 [ 66.709066][ C0] RAX: ffff88812ad73ae8 RBX: 0000000000000000 RCX: ffffffff86049c70 [ 66.717013][ C0] RDX: 0000000000000000 RSI: ffffffff814069d8 RDI: ffffc90001707c5a [ 66.724964][ C0] RBP: ffffc90001707bf0 R08: 0000000000000000 R09: 0000c90001707c5a [ 66.732911][ C0] R10: 0000000000000000 R11: 000088812ad73c1f R12: 0000000000000000 [ 66.740859][ C0] R13: 0000000000000001 R14: ffffc90001707c5a R15: 000000000000006e [ 66.748824][ C0] ? kallsyms_expand_symbol.constprop.0+0x138/0x160 [ 66.755489][ C0] kallsyms_expand_symbol.constprop.0+0x140/0x160 [ 66.761887][ C0] kallsyms_lookup_name+0x7f/0x120 [ 66.766981][ C0] ? __check_object_size+0x5f/0x346 [ 66.772166][ C0] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 66.778382][ C0] ? strlen+0x3b/0x60 [ 66.782350][ C0] debugfs_write+0x14b/0x2d0 [ 66.786926][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 66.793146][ C0] ? refcount_inc_not_zero_checked+0xba/0x150 [ 66.799202][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 66.805419][ C0] ? debugfs_file_get+0xae/0x1e0 [ 66.810365][ C0] full_proxy_write+0xbd/0x100 [ 66.815115][ C0] __vfs_write+0x67/0xc0 [ 66.819342][ C0] ? full_proxy_poll+0xf0/0xf0 [ 66.824113][ C0] vfs_write+0x18a/0x390 [ 66.828343][ C0] ksys_write+0xd5/0x1b0 [ 66.832588][ C0] __x64_sys_write+0x4c/0x60 [ 66.837170][ C0] do_syscall_64+0xcc/0x370 [ 66.841659][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 66.847531][ C0] RIP: 0033:0x413cd0 [ 66.851406][ 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 [ 66.870998][ C0] RSP: 002b:00007ffcb2914dd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 66.879397][ C0] RAX: ffffffffffffffda RBX: 0000000000000018 RCX: 0000000000413cd0 [ 66.887344][ C0] RDX: 0000000000000018 RSI: 0000000001a5b950 RDI: 0000000000000003 [ 66.895293][ C0] RBP: 0000000001a5b950 R08: 0000000000000100 R09: 0000000000000018 [ 66.903238][ C0] R10: 0000000000000016 R11: 0000000000000246 R12: 0000000000000018 [ 66.911187][ C0] R13: 0000000000000001 R14: 00007ffcb2914e50 R15: 0000000000000000 [ 66.920548][ C0] Kernel Offset: disabled [ 66.924873][ C0] Rebooting in 86400 seconds..