[ 51.878617][ T26] audit: type=1800 audit(1573076361.245:27): pid=7839 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2469 res=0 [ 51.911109][ T26] audit: type=1800 audit(1573076361.255:28): pid=7839 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. [ 53.256388][ T26] audit: type=1800 audit(1573076362.695:29): pid=7839 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 [ 53.277735][ T26] audit: type=1800 audit(1573076362.695:30): pid=7839 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 '10.128.10.57' (ECDSA) to the list of known hosts. 2019/11/06 21:39:31 fuzzer started 2019/11/06 21:39:33 dialing manager at 10.128.0.105:44951 2019/11/06 21:39:33 syscalls: 2553 2019/11/06 21:39:33 code coverage: enabled 2019/11/06 21:39:33 comparison tracing: enabled 2019/11/06 21:39:33 extra coverage: extra coverage is not supported by the kernel 2019/11/06 21:39:33 setuid sandbox: enabled 2019/11/06 21:39:33 namespace sandbox: enabled 2019/11/06 21:39:33 Android sandbox: /sys/fs/selinux/policy does not exist 2019/11/06 21:39:33 fault injection: enabled 2019/11/06 21:39:33 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/11/06 21:39:33 net packet injection: enabled 2019/11/06 21:39:33 net device setup: enabled 2019/11/06 21:39:33 concurrency sanitizer: enabled 2019/11/06 21:39:33 devlink PCI setup: PCI device 0000:00:10.0 is not available syzkaller login: [ 64.655905][ C0] ================================================================== [ 64.664031][ C0] BUG: KCSAN: data-race in tick_do_update_jiffies64 / tick_do_update_jiffies64 [ 64.672965][ C0] [ 64.675288][ C0] write to 0xffffffff86043008 of 8 bytes by task 0 on cpu 1: [ 64.682644][ C0] tick_do_update_jiffies64+0x100/0x250 [ 64.688172][ C0] tick_irq_enter+0x139/0x1c0 [ 64.692832][ C0] irq_enter+0x4f/0x60 [ 64.696886][ C0] smp_apic_timer_interrupt+0x55/0x280 [ 64.702337][ C0] apic_timer_interrupt+0xf/0x20 [ 64.707306][ C0] native_safe_halt+0xe/0x10 [ 64.711882][ C0] arch_cpu_idle+0x1f/0x30 [ 64.716286][ C0] default_idle_call+0x1e/0x40 [ 64.721054][ C0] do_idle+0x1af/0x280 [ 64.725122][ C0] cpu_startup_entry+0x1b/0x20 [ 64.729929][ C0] start_secondary+0x208/0x260 [ 64.734695][ C0] secondary_startup_64+0xa4/0xb0 [ 64.739695][ C0] [ 64.742051][ C0] read to 0xffffffff86043008 of 8 bytes by interrupt on cpu 0: [ 64.749579][ C0] tick_do_update_jiffies64+0x2b/0x250 [ 64.755057][ C0] tick_sched_do_timer+0xd4/0xe0 [ 64.759977][ C0] tick_sched_timer+0x43/0xe0 [ 64.764658][ C0] __hrtimer_run_queues+0x274/0x5f0 [ 64.769850][ C0] hrtimer_interrupt+0x22a/0x480 [ 64.774794][ C0] smp_apic_timer_interrupt+0xdc/0x280 [ 64.780249][ C0] apic_timer_interrupt+0xf/0x20 [ 64.785189][ C0] __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 64.791250][ C0] kallsyms_expand_symbol.constprop.0+0x111/0x160 [ 64.797655][ C0] kallsyms_lookup_name+0x7f/0x120 [ 64.802757][ C0] debugfs_write+0x14b/0x2d0 [ 64.807346][ C0] full_proxy_write+0xbd/0x100 [ 64.812094][ C0] __vfs_write+0x67/0xc0 [ 64.816318][ C0] vfs_write+0x18a/0x390 [ 64.820542][ C0] ksys_write+0xd5/0x1b0 [ 64.824781][ C0] __x64_sys_write+0x4c/0x60 [ 64.829388][ C0] do_syscall_64+0xcc/0x370 [ 64.833886][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 64.846436][ C0] [ 64.848742][ C0] Reported by Kernel Concurrency Sanitizer on: [ 64.854875][ C0] CPU: 0 PID: 8008 Comm: syz-executor Not tainted 5.4.0-rc6+ #0 [ 64.862479][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 64.872514][ C0] ================================================================== [ 64.880554][ C0] Kernel panic - not syncing: panic_on_warn set ... [ 64.887136][ C0] CPU: 0 PID: 8008 Comm: syz-executor Not tainted 5.4.0-rc6+ #0 [ 64.894770][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 64.906437][ C0] Call Trace: [ 64.909722][ C0] [ 64.912577][ C0] dump_stack+0xf5/0x159 [ 64.916820][ C0] panic+0x210/0x640 [ 64.920703][ C0] ? vprintk_func+0x8d/0x140 [ 64.925293][ C0] kcsan_report.cold+0xc/0xe [ 64.929897][ C0] kcsan_setup_watchpoint+0x3fe/0x410 [ 64.935266][ C0] __tsan_read8+0x145/0x1f0 [ 64.939766][ C0] tick_do_update_jiffies64+0x2b/0x250 [ 64.945282][ C0] tick_sched_do_timer+0xd4/0xe0 [ 64.950232][ C0] tick_sched_timer+0x43/0xe0 [ 64.954904][ C0] __hrtimer_run_queues+0x274/0x5f0 [ 64.960109][ C0] ? tick_sched_handle+0x100/0x100 [ 64.965220][ C0] hrtimer_interrupt+0x22a/0x480 [ 64.970173][ C0] smp_apic_timer_interrupt+0xdc/0x280 [ 64.975617][ C0] ? do_IRQ+0xcb/0x180 [ 64.980115][ C0] apic_timer_interrupt+0xf/0x20 [ 64.985059][ C0] [ 64.988003][ C0] RIP: 0010:__sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 64.994841][ C0] Code: 8b 4d 08 e8 18 ff ff ff 5d c3 66 0f 1f 44 00 00 55 40 0f b6 d6 40 0f b6 f7 bf 01 00 00 00 48 89 e5 48 8b 4d 08 e8 f6 fe ff ff <5d> c3 0f 1f 40 00 55 0f b7 d6 0f b7 f7 bf 03 00 00 00 48 89 e5 48 [ 65.014439][ C0] RSP: 0018:ffffc9000164fbf0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 [ 65.022855][ C0] RAX: 0000000000000000 RBX: ffffffff855d474d RCX: ffffffff81405421 [ 65.030811][ C0] RDX: 0000000000000065 RSI: 0000000000000000 RDI: 0000000000000001 [ 65.038766][ C0] RBP: ffffc9000164fbf0 R08: ffff888123424040 R09: 00000000aaaaaaab [ 65.046898][ C0] R10: 0000000000000000 R11: 00000000aaaaaaab R12: 0000000000000065 [ 65.054851][ C0] R13: 0000000000000001 R14: ffffc9000164fc50 R15: 0000000000000078 [ 65.062827][ C0] ? kallsyms_expand_symbol.constprop.0+0x111/0x160 [ 65.069500][ C0] kallsyms_expand_symbol.constprop.0+0x111/0x160 [ 65.075904][ C0] kallsyms_lookup_name+0x7f/0x120 [ 65.081018][ C0] ? __check_object_size+0x5f/0x346 [ 65.088220][ C0] ? strlen+0x3b/0x60 [ 65.092190][ C0] debugfs_write+0x14b/0x2d0 [ 65.096795][ C0] ? csum_and_copy_to_iter+0x1c0/0xef0 [ 65.102263][ C0] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 65.108510][ C0] ? refcount_inc_not_zero_checked+0xba/0x150 [ 65.114582][ C0] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 65.120805][ C0] ? debugfs_file_get+0xae/0x1e0 [ 65.125726][ C0] full_proxy_write+0xbd/0x100 [ 65.130482][ C0] __vfs_write+0x67/0xc0 [ 65.134704][ C0] ? full_proxy_poll+0xf0/0xf0 [ 65.139463][ C0] vfs_write+0x18a/0x390 [ 65.143690][ C0] ksys_write+0xd5/0x1b0 [ 65.147922][ C0] __x64_sys_write+0x4c/0x60 [ 65.152504][ C0] do_syscall_64+0xcc/0x370 [ 65.157008][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 65.162879][ C0] RIP: 0033:0x413cd0 [ 65.166762][ 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 [ 65.186345][ C0] RSP: 002b:00007ffdd58e3a38 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 65.194736][ C0] RAX: ffffffffffffffda RBX: 0000000000000011 RCX: 0000000000413cd0 [ 65.202706][ C0] RDX: 0000000000000011 RSI: 0000000001165950 RDI: 0000000000000003 [ 65.210656][ C0] RBP: 0000000001165950 R08: 0000000000000100 R09: 0000000000000011 [ 65.218616][ C0] R10: 000000000000000f R11: 0000000000000246 R12: 0000000000000011 [ 65.226571][ C0] R13: 0000000000000001 R14: 00007ffdd58e3ab0 R15: 0000000000000000 [ 65.235794][ C0] Kernel Offset: disabled [ 65.240121][ C0] Rebooting in 86400 seconds..