./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor999750294 <...> Warning: Permanently added '10.128.0.251' (ECDSA) to the list of known hosts. execve("./syz-executor999750294", ["./syz-executor999750294"], 0x7fff0044dda0 /* 10 vars */) = 0 brk(NULL) = 0x555556ba9000 brk(0x555556ba9c40) = 0x555556ba9c40 arch_prctl(ARCH_SET_FS, 0x555556ba9300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor999750294", 4096) = 27 brk(0x555556bcac40) = 0x555556bcac40 brk(0x555556bcb000) = 0x555556bcb000 mprotect(0x7f30b30e6000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 openat(AT_FDCWD, "/dev/snd/timer", O_RDONLY) = 3 ioctl(3, SNDRV_TIMER_IOCTL_TREAD_OLD, 0x20000040) = 0 ioctl(3, SNDRV_TIMER_IOCTL_SELECT, 0x20000080) = 0 ioctl(3, SNDRV_TIMER_IOCTL_PARAMS, 0x20000440) = 0 ioctl(3, FIOASYNC, [-256]) = 0 ioctl(3, SNDRV_TIMER_IOCTL_START, 0) = 0 open(".", O_RDONLY) = 4 fcntl(4, F_SETOWN, -1) = 0 fcntl(4, F_NOTIFY, DN_ACCESS|DN_CREATE|DN_ATTRIB) = 0 creat("./file0", 000) = 5 openat(AT_FDCWD, "/dev/dsp", O_WRONLY|O_EXCL|O_DSYNC|O_NOATIME) = 6 write(6, "\x7f\x45\x4c\x46\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x38\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x20\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 1368) = 1368 exit_group(0) = ? syzkaller login: [ 53.214754][ C1] [ 53.217109][ C1] ======================================================== [ 53.224305][ C1] WARNING: possible irq lock inversion dependency detected [ 53.231507][ C1] 5.19.0-rc4-next-20220628-syzkaller #0 Not tainted [ 53.238087][ C1] -------------------------------------------------------- [ 53.245273][ C1] swapper/1/0 just changed the state of lock: [ 53.251344][ C1] ffff8880256c2110 (&group->lock){..-.}-{2:2}, at: _snd_pcm_stream_lock_irqsave+0x9f/0xd0 [ 53.261265][ C1] but this lock took another, SOFTIRQ-READ-unsafe lock in the past: [ 53.269216][ C1] (tasklist_lock){.+.+}-{2:2} [ 53.269233][ C1] [ 53.269233][ C1] [ 53.269233][ C1] and interrupts could create inverse lock ordering between them. [ 53.269233][ C1] [ 53.288278][ C1] [ 53.288278][ C1] other info that might help us debug this: [ 53.296319][ C1] Chain exists of: [ 53.296319][ C1] &group->lock --> &timer->lock --> tasklist_lock [ 53.296319][ C1] [ 53.308649][ C1] Possible interrupt unsafe locking scenario: [ 53.308649][ C1] [ 53.316946][ C1] CPU0 CPU1 [ 53.322288][ C1] ---- ---- [ 53.327631][ C1] lock(tasklist_lock); [ 53.331859][ C1] local_irq_disable(); [ 53.338719][ C1] lock(&group->lock); [ 53.345391][ C1] lock(&timer->lock); [ 53.352044][ C1] [ 53.355480][ C1] lock(&group->lock); [ 53.359790][ C1] [ 53.359790][ C1] *** DEADLOCK *** [ 53.359790][ C1] [ 53.367998][ C1] no locks held by swapper/1/0. [ 53.372847][ C1] [ 53.372847][ C1] the shortest dependencies between 2nd lock and 1st lock: [ 53.382325][ C1] -> (tasklist_lock){.+.+}-{2:2} { [ 53.387799][ C1] HARDIRQ-ON-R at: [ 53.392112][ C1] lock_acquire+0x1ab/0x570 [ 53.398951][ C1] _raw_read_lock+0x5b/0x70 [ 53.405789][ C1] do_wait+0x27f/0xcd0 [ 53.412185][ C1] kernel_wait+0x9c/0x150 [ 53.418853][ C1] call_usermodehelper_exec_work+0xf5/0x180 [ 53.427696][ C1] process_one_work+0x991/0x1610 [ 53.434984][ C1] worker_thread+0x665/0x1080 [ 53.441998][ C1] kthread+0x2e9/0x3a0 [ 53.448398][ C1] ret_from_fork+0x1f/0x30 [ 53.455145][ C1] SOFTIRQ-ON-R at: [ 53.459449][ C1] lock_acquire+0x1ab/0x570 [ 53.466277][ C1] _raw_read_lock+0x5b/0x70 [ 53.473112][ C1] do_wait+0x27f/0xcd0 [ 53.479548][ C1] kernel_wait+0x9c/0x150 [ 53.486215][ C1] call_usermodehelper_exec_work+0xf5/0x180 [ 53.494442][ C1] process_one_work+0x991/0x1610 [ 53.501711][ C1] worker_thread+0x665/0x1080 [ 53.508714][ C1] kthread+0x2e9/0x3a0 [ 53.515120][ C1] ret_from_fork+0x1f/0x30 [ 53.521867][ C1] INITIAL USE at: [ 53.526085][ C1] lock_acquire+0x1ab/0x570 [ 53.532843][ C1] _raw_write_lock_irq+0x32/0x50 [ 53.540029][ C1] copy_process+0x448a/0x7080 [ 53.546952][ C1] kernel_clone+0xe7/0xab0 [ 53.553626][ C1] user_mode_thread+0xad/0xe0 [ 53.560544][ C1] rest_init+0x23/0x270 [ 53.566960][ C1] arch_call_rest_init+0xf/0x14 [ 53.574056][ C1] start_kernel+0x473/0x494 [ 53.580803][ C1] secondary_startup_64_no_verify+0xce/0xdb [ 53.588942][ C1] INITIAL READ USE at: [ 53.593597][ C1] lock_acquire+0x1ab/0x570 [ 53.600773][ C1] _raw_read_lock+0x5b/0x70 [ 53.607970][ C1] do_wait+0x27f/0xcd0 [ 53.614709][ C1] kernel_wait+0x9c/0x150 [ 53.621711][ C1] call_usermodehelper_exec_work+0xf5/0x180 [ 53.630288][ C1] process_one_work+0x991/0x1610 [ 53.637901][ C1] worker_thread+0x665/0x1080 [ 53.645252][ C1] kthread+0x2e9/0x3a0 [ 53.651997][ C1] ret_from_fork+0x1f/0x30 [ 53.659091][ C1] } [ 53.661944][ C1] ... key at: [] tasklist_lock+0x18/0x40 [ 53.670099][ C1] ... acquired at: [ 53.674240][ C1] _raw_read_lock+0x5b/0x70 [ 53.678941][ C1] send_sigio+0xab/0x380 [ 53.683386][ C1] dnotify_handle_event+0x148/0x280 [ 53.688742][ C1] fsnotify_handle_inode_event.isra.0+0x22e/0x370 [ 53.695315][ C1] fsnotify+0xec0/0x13a0 [ 53.699712][ C1] path_openat+0x1232/0x2930 [ 53.704456][ C1] do_filp_open+0x1aa/0x400 [ 53.709129][ C1] do_sys_openat2+0x16d/0x4c0 [ 53.713964][ C1] __x64_sys_creat+0xc9/0x120 [ 53.718803][ C1] do_syscall_64+0x35/0xb0 [ 53.723376][ C1] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 53.729425][ C1] [ 53.731727][ C1] -> (&f->f_owner.lock){....}-{2:2} { [ 53.737358][ C1] INITIAL USE at: [ 53.741504][ C1] lock_acquire+0x1ab/0x570 [ 53.748084][ C1] _raw_write_lock_irq+0x32/0x50 [ 53.755104][ C1] f_modown+0x2a/0x390 [ 53.761259][ C1] f_setown+0xd7/0x230 [ 53.767394][ C1] do_fcntl+0x6f1/0x1040 [ 53.773726][ C1] __x64_sys_fcntl+0x15f/0x1d0 [ 53.780570][ C1] do_syscall_64+0x35/0xb0 [ 53.787058][ C1] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 53.795018][ C1] INITIAL READ USE at: [ 53.799587][ C1] lock_acquire+0x1ab/0x570 [ 53.806592][ C1] _raw_read_lock_irqsave+0x70/0x90 [ 53.814335][ C1] send_sigio+0x24/0x380 [ 53.821083][ C1] kill_fasync+0x1f8/0x470 [ 53.828007][ C1] snd_timer_user_ccallback+0x298/0x330 [ 53.836056][ C1] snd_timer_notify1+0x11c/0x3b0 [ 53.843499][ C1] snd_timer_start1+0x4d4/0x800 [ 53.850846][ C1] snd_timer_user_start.isra.0+0x1e3/0x260 [ 53.859151][ C1] __snd_timer_user_ioctl.isra.0+0xda4/0x2490 [ 53.867724][ C1] snd_timer_user_ioctl+0x77/0xb0 [ 53.875252][ C1] __x64_sys_ioctl+0x193/0x200 [ 53.882521][ C1] do_syscall_64+0x35/0xb0 [ 53.889438][ C1] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 53.897830][ C1] } [ 53.900567][ C1] ... key at: [] __key.5+0x0/0x40 [ 53.907927][ C1] ... acquired at: [ 53.911988][ C1] _raw_read_lock_irqsave+0x70/0x90 [ 53.917378][ C1] send_sigio+0x24/0x380 [ 53.921802][ C1] kill_fasync+0x1f8/0x470 [ 53.926411][ C1] snd_timer_user_ccallback+0x298/0x330 [ 53.932128][ C1] snd_timer_notify1+0x11c/0x3b0 [ 53.937245][ C1] snd_timer_start1+0x4d4/0x800 [ 53.942279][ C1] snd_timer_user_start.isra.0+0x1e3/0x260 [ 53.948311][ C1] __snd_timer_user_ioctl.isra.0+0xda4/0x2490 [ 53.954540][ C1] snd_timer_user_ioctl+0x77/0xb0 [ 53.959724][ C1] __x64_sys_ioctl+0x193/0x200 [ 53.964651][ C1] do_syscall_64+0x35/0xb0 [ 53.969225][ C1] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 53.975276][ C1] [ 53.977577][ C1] -> (&new->fa_lock){....}-{2:2} { [ 53.982855][ C1] INITIAL READ USE at: [ 53.987336][ C1] lock_acquire+0x1ab/0x570 [ 53.994167][ C1] _raw_read_lock_irqsave+0x70/0x90 [ 54.001693][ C1] kill_fasync+0x136/0x470 [ 54.008440][ C1] snd_timer_user_ccallback+0x298/0x330 [ 54.016326][ C1] snd_timer_notify1+0x11c/0x3b0 [ 54.023683][ C1] snd_timer_start1+0x4d4/0x800 [ 54.030868][ C1] snd_timer_user_start.isra.0+0x1e3/0x260 [ 54.039003][ C1] __snd_timer_user_ioctl.isra.0+0xda4/0x2490 [ 54.047408][ C1] snd_timer_user_ioctl+0x77/0xb0 [ 54.054778][ C1] __x64_sys_ioctl+0x193/0x200 [ 54.062064][ C1] do_syscall_64+0x35/0xb0 [ 54.068824][ C1] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 54.077058][ C1] } [ 54.079735][ C1] ... key at: [] __key.0+0x0/0x40 [ 54.087016][ C1] ... acquired at: [ 54.091004][ C1] _raw_read_lock_irqsave+0x70/0x90 [ 54.096378][ C1] kill_fasync+0x136/0x470 [ 54.100970][ C1] snd_timer_user_ccallback+0x298/0x330 [ 54.106699][ C1] snd_timer_notify1+0x11c/0x3b0 [ 54.111814][ C1] snd_timer_start1+0x4d4/0x800 [ 54.116838][ C1] snd_timer_user_start.isra.0+0x1e3/0x260 [ 54.122801][ C1] __snd_timer_user_ioctl.isra.0+0xda4/0x2490 [ 54.129025][ C1] snd_timer_user_ioctl+0x77/0xb0 [ 54.134206][ C1] __x64_sys_ioctl+0x193/0x200 [ 54.139128][ C1] do_syscall_64+0x35/0xb0 [ 54.143701][ C1] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 54.149751][ C1] [ 54.152054][ C1] -> (&timer->lock){....}-{2:2} { [ 54.157155][ C1] INITIAL USE at: [ 54.161114][ C1] lock_acquire+0x1ab/0x570 [ 54.167422][ C1] _raw_spin_lock_irqsave+0x39/0x50 [ 54.174345][ C1] snd_timer_resolution+0x55/0x100 [ 54.181180][ C1] snd_timer_user_params.isra.0+0x18e/0x8c0 [ 54.188794][ C1] __snd_timer_user_ioctl.isra.0+0x101c/0x2490 [ 54.196666][ C1] snd_timer_user_ioctl+0x77/0xb0 [ 54.203408][ C1] __x64_sys_ioctl+0x193/0x200 [ 54.209940][ C1] do_syscall_64+0x35/0xb0 [ 54.216104][ C1] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 54.223731][ C1] } [ 54.226308][ C1] ... key at: [] __key.10+0x0/0x40 [ 54.234288][ C1] ... acquired at: [ 54.238161][ C1] _raw_spin_lock_irqsave+0x39/0x50 [ 54.243525][ C1] snd_timer_notify+0x10c/0x3d0 [ 54.248531][ C1] snd_pcm_post_start+0x24a/0x310 [ 54.253712][ C1] snd_pcm_action_single+0xf4/0x130 [ 54.259130][ C1] snd_pcm_action+0x6e/0x90 [ 54.263789][ C1] __snd_pcm_lib_xfer+0x14cb/0x1e10 [ 54.269153][ C1] snd_pcm_oss_write3+0x103/0x250 [ 54.274340][ C1] snd_pcm_oss_write2+0x30e/0x3f0 [ 54.279529][ C1] snd_pcm_oss_sync1+0x187/0x440 [ 54.284623][ C1] snd_pcm_oss_sync+0x638/0x800 [ 54.289645][ C1] snd_pcm_oss_release+0x276/0x300 [ 54.294915][ C1] __fput+0x277/0x9d0 [ 54.299058][ C1] task_work_run+0xdd/0x1a0 [ 54.303723][ C1] do_exit+0xaf1/0x29f0 [ 54.308033][ C1] do_group_exit+0xd2/0x2f0 [ 54.312691][ C1] __x64_sys_exit_group+0x3a/0x50 [ 54.317868][ C1] do_syscall_64+0x35/0xb0 [ 54.322442][ C1] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 54.328498][ C1] [ 54.330822][ C1] -> (&group->lock){..-.}-{2:2} { [ 54.335867][ C1] IN-SOFTIRQ-W at: [ 54.339849][ C1] lock_acquire+0x1ab/0x570 [ 54.346007][ C1] _raw_spin_lock_irqsave+0x39/0x50 [ 54.352860][ C1] _snd_pcm_stream_lock_irqsave+0x9f/0xd0 [ 54.360218][ C1] snd_pcm_period_elapsed+0x1d/0x50 [ 54.367137][ C1] dummy_hrtimer_callback+0x94/0x1b0 [ 54.374058][ C1] __hrtimer_run_queues+0x5fa/0xe40 [ 54.380891][ C1] hrtimer_run_softirq+0x17b/0x360 [ 54.387651][ C1] __do_softirq+0x29b/0x9c2 [ 54.393786][ C1] __irq_exit_rcu+0x123/0x180 [ 54.400095][ C1] irq_exit_rcu+0x5/0x20 [ 54.405980][ C1] sysvec_apic_timer_interrupt+0x93/0xc0 [ 54.413255][ C1] asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 54.420885][ C1] acpi_idle_do_entry+0x1c9/0x240 [ 54.427571][ C1] acpi_idle_enter+0x364/0x500 [ 54.433991][ C1] cpuidle_enter_state+0x1b1/0xc80 [ 54.440737][ C1] cpuidle_enter+0x4a/0xa0 [ 54.446785][ C1] do_idle+0x3e8/0x590 [ 54.452487][ C1] cpu_startup_entry+0x14/0x20 [ 54.458883][ C1] start_secondary+0x21d/0x2b0 [ 54.465409][ C1] secondary_startup_64_no_verify+0xce/0xdb [ 54.472954][ C1] INITIAL USE at: [ 54.476835][ C1] lock_acquire+0x1ab/0x570 [ 54.482899][ C1] _raw_spin_lock_irq+0x32/0x50 [ 54.489312][ C1] snd_pcm_hw_params+0x14b/0x19f0 [ 54.495908][ C1] snd_pcm_kernel_ioctl+0x164/0x310 [ 54.502685][ C1] snd_pcm_oss_change_params_locked+0x14dd/0x3a60 [ 54.510667][ C1] snd_pcm_oss_make_ready_locked+0xb3/0x130 [ 54.518122][ C1] snd_pcm_oss_write+0x4ac/0x9c0 [ 54.524617][ C1] vfs_write+0x269/0xac0 [ 54.530408][ C1] ksys_write+0x127/0x250 [ 54.536280][ C1] do_syscall_64+0x35/0xb0 [ 54.542241][ C1] entry_SYSCALL_64_after_hwframe+0x46/0xb0 [ 54.549685][ C1] } [ 54.552164][ C1] ... key at: [] __key.8+0x0/0x40 [ 54.559258][ C1] ... acquired at: [ 54.563039][ C1] __lock_acquire+0x11e7/0x5660 [ 54.568056][ C1] lock_acquire+0x1ab/0x570 [ 54.572722][ C1] _raw_spin_lock_irqsave+0x39/0x50 [ 54.578087][ C1] _snd_pcm_stream_lock_irqsave+0x9f/0xd0 [ 54.583980][ C1] snd_pcm_period_elapsed+0x1d/0x50 [ 54.589352][ C1] dummy_hrtimer_callback+0x94/0x1b0 [ 54.594793][ C1] __hrtimer_run_queues+0x5fa/0xe40 [ 54.600178][ C1] hrtimer_run_softirq+0x17b/0x360 [ 54.605490][ C1] __do_softirq+0x29b/0x9c2 [ 54.610153][ C1] __irq_exit_rcu+0x123/0x180 [ 54.614988][ C1] irq_exit_rcu+0x5/0x20 [ 54.619402][ C1] sysvec_apic_timer_interrupt+0x93/0xc0 [ 54.625191][ C1] asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 54.631341][ C1] acpi_idle_do_entry+0x1c9/0x240 [ 54.636528][ C1] acpi_idle_enter+0x364/0x500 [ 54.641453][ C1] cpuidle_enter_state+0x1b1/0xc80 [ 54.646724][ C1] cpuidle_enter+0x4a/0xa0 [ 54.651298][ C1] do_idle+0x3e8/0x590 [ 54.655526][ C1] cpu_startup_entry+0x14/0x20 [ 54.660447][ C1] start_secondary+0x21d/0x2b0 [ 54.665405][ C1] secondary_startup_64_no_verify+0xce/0xdb [ 54.671474][ C1] [ 54.673786][ C1] [ 54.673786][ C1] stack backtrace: [ 54.679670][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 5.19.0-rc4-next-20220628-syzkaller #0 [ 54.688877][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 54.698934][ C1] Call Trace: [ 54.702207][ C1] [ 54.705043][ C1] dump_stack_lvl+0xcd/0x134 [ 54.709644][ C1] mark_lock.part.0.cold+0x86/0xd8 [ 54.714759][ C1] ? lock_chain_count+0x20/0x20 [ 54.719618][ C1] ? __lock_acquire+0x163e/0x5660 [ 54.724642][ C1] __lock_acquire+0x11e7/0x5660 [ 54.729487][ C1] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 54.735482][ C1] ? find_held_lock+0x2d/0x110 [ 54.740259][ C1] lock_acquire+0x1ab/0x570 [ 54.744753][ C1] ? _snd_pcm_stream_lock_irqsave+0x9f/0xd0 [ 54.750647][ C1] ? lock_release+0x780/0x780 [ 54.755328][ C1] ? find_held_lock+0x2d/0x110 [ 54.760094][ C1] ? __hrtimer_run_queues+0x510/0xe40 [ 54.765467][ C1] ? _raw_spin_lock_irqsave+0x4e/0x50 [ 54.770849][ C1] ? dummy_pcm_copy_kernel+0x10/0x10 [ 54.776145][ C1] _raw_spin_lock_irqsave+0x39/0x50 [ 54.781347][ C1] ? _snd_pcm_stream_lock_irqsave+0x9f/0xd0 [ 54.787242][ C1] _snd_pcm_stream_lock_irqsave+0x9f/0xd0 [ 54.792963][ C1] snd_pcm_period_elapsed+0x1d/0x50 [ 54.798156][ C1] dummy_hrtimer_callback+0x94/0x1b0 [ 54.803437][ C1] __hrtimer_run_queues+0x5fa/0xe40 [ 54.808638][ C1] ? hrtimer_sleeper_start_expires+0x80/0x80 [ 54.814616][ C1] ? ktime_get_update_offsets_now+0x3eb/0x5c0 [ 54.820685][ C1] hrtimer_run_softirq+0x17b/0x360 [ 54.825797][ C1] __do_softirq+0x29b/0x9c2 [ 54.830340][ C1] __irq_exit_rcu+0x123/0x180 [ 54.835016][ C1] irq_exit_rcu+0x5/0x20 [ 54.839252][ C1] sysvec_apic_timer_interrupt+0x93/0xc0 [ 54.844886][ C1] [ 54.847808][ C1] [ 54.850731][ C1] asm_sysvec_apic_timer_interrupt+0x1b/0x20 [ 54.856711][ C1] RIP: 0010:acpi_idle_do_entry+0x1c9/0x240 [ 54.862522][ C1] Code: 89 de e8 9a 7a fe f7 84 db 75 98 e8 01 7e fe f7 e8 ec cc 04 f8 66 90 e8 f5 7d fe f7 0f 00 2d 7e 28 b8 00 e8 e9 7d fe f7 fb f4 <9c> 5b 81 e3 00 02 00 00 fa 31 ff 48 89 de e8 c4 7a fe f7 48 85 db [ 54.882149][ C1] RSP: 0018:ffffc90000177d20 EFLAGS: 00000293 [ 54.888234][ C1] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 54.896222][ C1] RDX: ffff888011a71d40 RSI: ffffffff897c3927 RDI: 0000000000000000 [ 54.904194][ C1] RBP: ffff888145ab1864 R08: 0000000000000001 R09: 0000000000000001 [ 54.912158][ C1] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001 [ 54.920139][ C1] R13: ffff888145ab1800 R14: ffff888145ab1864 R15: ffff888017cd7804 [ 54.928125][ C1] ? acpi_idle_do_entry+0x1c7/0x240 [ 54.933375][ C1] acpi_idle_enter+0x364/0x500 [ 54.938184][ C1] cpuidle_enter_state+0x1b1/0xc80 [ 54.943335][ C1] cpuidle_enter+0x4a/0xa0 [ 54.947786][ C1] do_idle+0x3e8/0x590 [ 54.951889][ C1] ? arch_cpu_idle_exit+0x30/0x30 [ 54.956948][ C1] ? _raw_spin_unlock_irq+0x11/0x40 [ 54.962175][ C1] ? lockdep_hardirqs_on+0x79/0x100 [ 54.967409][ C1] cpu_startup_entry+0x14/0x20 +++ exited with 0 +++ [ 54.9