rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 3305 jiffies s: 11409 root: 0x2/. rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 1167 Comm: klogd Not tainted 6.1.0-rc3-syzkaller-00026-ga8bc8cc193c6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 RIP: 0010:io_serial_out+0x8b/0xa0 drivers/tty/serial/8250/8250_port.c:467 Code: 48 8d 7d 40 44 89 e1 48 b8 00 00 00 00 00 fc ff df 48 89 fa d3 e3 48 c1 ea 03 80 3c 02 00 75 18 66 03 5d 40 44 89 e8 89 da ee <5b> 5d 41 5c 41 5d c3 e8 99 57 23 ff eb a4 e8 c2 57 23 ff eb e1 41 RSP: 0018:ffffc90000178410 EFLAGS: 00000002 RAX: 000000000000005b RBX: 00000000000003f8 RCX: 0000000000000000 RDX: 00000000000003f8 RSI: ffffffff8256df61 RDI: ffffffff8bd2f3e0 RBP: ffffffff8bd2f3a0 R08: 0000000000000001 R09: 000000000000001f R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: 000000000000005b R14: ffffffff8256df00 R15: 0000000000000000 FS: 00007fd22b6d7800(0000) GS:ffff8881f6700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f03c1675988 CR3: 000000010fee3000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: serial_out drivers/tty/serial/8250/8250.h:123 [inline] serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:3362 [inline] serial8250_console_write+0xd0e/0x1010 drivers/tty/serial/8250/8250_port.c:3433 call_console_driver kernel/printk/printk.c:1942 [inline] console_emit_next_record.constprop.0+0x3de/0x840 kernel/printk/printk.c:2731 console_flush_all kernel/printk/printk.c:2793 [inline] console_unlock+0x3be/0x600 kernel/printk/printk.c:2860 vprintk_emit+0x1b9/0x5f0 kernel/printk/printk.c:2268 vprintk+0x80/0x90 kernel/printk/printk_safe.c:50 _printk+0xba/0xed kernel/printk/printk.c:2289 printk_stack_address arch/x86/kernel/dumpstack.c:72 [inline] show_trace_log_lvl+0x221/0x2ba arch/x86/kernel/dumpstack.c:282 sched_show_task kernel/sched/core.c:8879 [inline] sched_show_task+0x44c/0x5c0 kernel/sched/core.c:8853 show_state_filter+0xf0/0x300 kernel/sched/core.c:8924 k_spec drivers/tty/vt/keyboard.c:667 [inline] k_spec+0xe1/0x130 drivers/tty/vt/keyboard.c:656 kbd_keycode drivers/tty/vt/keyboard.c:1524 [inline] kbd_event+0xcdd/0x1790 drivers/tty/vt/keyboard.c:1543 input_to_handler+0x3b9/0x4c0 drivers/input/input.c:130 input_pass_values.part.0+0x230/0x710 drivers/input/input.c:159 input_pass_values drivers/input/input.c:146 [inline] input_event_dispose+0x5cf/0x730 drivers/input/input.c:374 input_handle_event+0x112/0xda0 drivers/input/input.c:402 input_repeat_key+0x23c/0x340 drivers/input/input.c:2263 call_timer_fn+0x1da/0x7c0 kernel/time/timer.c:1474 expire_timers kernel/time/timer.c:1519 [inline] __run_timers.part.0+0x6a2/0xaf0 kernel/time/timer.c:1790 __run_timers kernel/time/timer.c:1768 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803 __do_softirq+0x1e4/0xabb kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x113/0x170 kernel/softirq.c:650 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1107 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:on_stack arch/x86/include/asm/stacktrace.h:60 [inline] RIP: 0010:stack_access_ok+0x8c/0x1d0 arch/x86/kernel/unwind_orc.c:347 Code: 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 13 01 00 00 49 39 ed 48 8b 43 10 77 1a 48 39 e8 76 15 <4a> 8d 54 25 00 48 39 d0 0f 93 c0 49 39 d5 0f 92 c2 20 d0 75 38 48 RSP: 0018:ffffc900005771e8 EFLAGS: 00000206 RAX: ffffc90000578000 RBX: ffffc90000577290 RCX: 0000000000000001 RDX: 1ffff920000aee54 RSI: ffffc90000577f00 RDI: ffffc900005772a0 RBP: ffffc90000577f00 R08: ffffffff899fb1fa R09: ffffc900005772c4 R10: fffff520000aee5d R11: ffffc90000577f00 R12: 0000000000000008 R13: ffffc90000570000 R14: ffffc90000577f08 R15: ffffffff899fb1fe deref_stack_reg arch/x86/kernel/unwind_orc.c:357 [inline] unwind_next_frame+0xc3f/0x1cc0 arch/x86/kernel/unwind_orc.c:539 arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122 save_stack+0x151/0x1e0 mm/page_owner.c:127 __set_page_owner+0x1b/0x60 mm/page_owner.c:190 prep_new_page mm/page_alloc.c:2539 [inline] get_page_from_freelist+0x128b/0x2c70 mm/page_alloc.c:4288 __alloc_pages+0x1c7/0x5a0 mm/page_alloc.c:5555 alloc_pages+0x1a6/0x270 mm/mempolicy.c:2285 alloc_slab_page mm/slub.c:1794 [inline] allocate_slab+0x213/0x300 mm/slub.c:1939 new_slab mm/slub.c:1992 [inline] ___slab_alloc+0xa91/0x1400 mm/slub.c:3180 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3279 slab_alloc_node mm/slub.c:3364 [inline] kmem_cache_alloc_node+0x30f/0x3e0 mm/slub.c:3443 __alloc_skb+0x210/0x2f0 net/core/skbuff.c:497 alloc_skb include/linux/skbuff.h:1267 [inline] alloc_skb_with_frags+0x93/0x6c0 net/core/skbuff.c:6124 sock_alloc_send_pskb+0x7a3/0x930 net/core/sock.c:2719 unix_dgram_sendmsg+0x415/0x1b50 net/unix/af_unix.c:1943 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:734 __sys_sendto+0x236/0x340 net/socket.c:2117 __do_sys_sendto net/socket.c:2129 [inline] __se_sys_sendto net/socket.c:2125 [inline] __x64_sys_sendto+0xdd/0x1b0 net/socket.c:2125 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fd22b8730ac Code: 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 19 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 64 c3 0f 1f 00 55 48 83 ec 20 48 89 54 24 10 RSP: 002b:00007fffbf362328 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd22b8730ac RDX: 000000000000003b RSI: 0000559521b28a90 RDI: 0000000000000003 RBP: 0000559521b1f910 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000014 R13: 0000000000000001 R14: 00007fd22b9ee77d R15: 00007fffbf362438 do_sigtimedwait+0x42e/0x5c0 kernel/signal.c:3605 __do_sys_rt_sigtimedwait kernel/signal.c:3649 [inline] __se_sys_rt_sigtimedwait kernel/signal.c:3627 [inline] __x64_sys_rt_sigtimedwait+0x1a1/0x290 kernel/signal.c:3627 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fd34bdfcac4 RSP: 002b:00007fffa040fb20 EFLAGS: 00000246 ORIG_RAX: 0000000000000080 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd34bdfcac4 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00007fd34c045498 RBP: 00007fd34c045490 R08: 00000000ffffffff R09: 0000000000000000 R10: 0000000000000008 R11: 0000000000000246 R12: 00007fffa040fb88 R13: 00007fffa040fb7c R14: 0000000000000000 R15: 0000000000000000 task:kthreadd state:S stack:28160 pid:2 ppid:0 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 kthreadd+0x592/0x750 kernel/kthread.c:734 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:rcu_gp state:I stack:30280 pid:3 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:rcu_par_gp state:I stack:30904 pid:4 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:slub_flushwq state:I stack:30904 pid:5 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:netns state:I stack:30904 pid:6 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/0:0H state:I stack:29648 pid:8 ppid:2 flags:0x00004000 Workqueue: 0x0 (events_highpri) Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 worker_thread+0x15c/0x1080 kernel/workqueue.c:2457 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:mm_percpu_wq state:I stack:29432 pid:10 ppid:2 flags:0x00004000 Workqueue: 0x0 (mm_percpu_wq) Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:rcu_tasks_kthre state:I stack:29312 pid:11 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rcu_tasks_one_gp+0x3e5/0xc70 kernel/rcu/tasks.h:514 rcu_tasks_kthread+0x80/0xa0 kernel/rcu/tasks.h:552 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/0:1 state:I stack:21592 pid:12 ppid:2 flags:0x00004000 Workqueue: 0x0 (events_power_efficient) Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 worker_thread+0x15c/0x1080 kernel/workqueue.c:2457 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:ksoftirqd/0 state:S stack:27320 pid:13 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 smpboot_thread_fn+0x2eb/0xa00 kernel/smpboot.c:160 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:rcu_preempt state:I stack:28728 pid:14 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1935 rcu_gp_fqs_loop+0x190/0x720 kernel/rcu/tree.c:1660 rcu_gp_kthread+0x1a3/0x250 kernel/rcu/tree.c:1859 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:migration/0 state:S stack:30352 pid:15 ppid:2 flags:0x00004000 Stopper: 0x0 <- 0x0 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 smpboot_thread_fn+0x2eb/0xa00 kernel/smpboot.c:160 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:cpuhp/0 state:S stack:27448 pid:16 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 smpboot_thread_fn+0x2eb/0xa00 kernel/smpboot.c:160 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:cpuhp/1 state:S stack:28104 pid:17 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 smpboot_thread_fn+0x2eb/0xa00 kernel/smpboot.c:160 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:migration/1 state:R running task stack:30352 pid:18 ppid:2 flags:0x00004000 Stopper: 0x0 <- 0x0 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 smpboot_thread_fn+0x2eb/0xa00 kernel/smpboot.c:160 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:ksoftirqd/1 state:S stack:23488 pid:19 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 smpboot_thread_fn+0x2eb/0xa00 kernel/smpboot.c:160 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/1:0H state:I stack:29368 pid:21 ppid:2 flags:0x00004000 Workqueue: 0x0 (events_highpri) Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 worker_thread+0x15c/0x1080 kernel/workqueue.c:2457 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kdevtmpfs state:S stack:27528 pid:22 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 devtmpfs_work_loop drivers/base/devtmpfs.c:415 [inline] devtmpfsd+0x286/0x2a3 drivers/base/devtmpfs.c:448 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:inet_frag_wq state:I stack:30624 pid:23 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kauditd state:S stack:29984 pid:24 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 kauditd_thread+0x4d8/0x9c0 kernel/audit.c:901 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:khungtaskd state:S stack:30024 pid:25 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1935 watchdog+0xf9/0xfc0 kernel/hung_task.c:381 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:oom_reaper state:S stack:30368 pid:27 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 oom_reaper+0x9fe/0xc80 mm/oom_kill.c:647 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:writeback state:I stack:30088 pid:28 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kcompactd0 state:S stack:29832 pid:29 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1935 kcompactd+0xa36/0xd80 mm/compaction.c:2956 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kblockd state:I stack:30904 pid:30 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:blkcg_punt_bio state:I stack:30904 pid:31 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:tpm_dev_wq state:I stack:30904 pid:32 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:ata_sff state:I stack:30904 pid:33 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:md state:I stack:30088 pid:34 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:edac-poller state:I stack:30088 pid:35 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/1:1H state:I stack:27840 pid:38 ppid:2 flags:0x00004000 Workqueue: 0x0 (kblockd) Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 worker_thread+0x15c/0x1080 kernel/workqueue.c:2457 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:rpciod state:I stack:30088 pid:39 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:xprtiod state:I stack:30904 pid:40 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:cfg80211 state:I stack:30904 pid:41 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kswapd0 state:S stack:30016 pid:65 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 kswapd_try_to_sleep mm/vmscan.c:7251 [inline] kswapd+0xd4f/0xfc0 mm/vmscan.c:7313 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:nfsiod state:I stack:30280 pid:67 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/0:2 state:I stack:22072 pid:71 ppid:2 flags:0x00004000 Workqueue: 0x0 (events) Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 worker_thread+0x15c/0x1080 kernel/workqueue.c:2457 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:acpi_thermal_pm state:I stack:29520 pid:104 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:hwrng state:S stack:30032 pid:148 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1935 add_hwgenerator_randomness+0x96/0x150 drivers/char/random.c:886 hwrng_fillfn+0x258/0x3e0 drivers/char/hw_random/core.c:530 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:scsi_eh_0 state:S stack:30240 pid:192 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 scsi_error_handler+0x523/0xe30 drivers/scsi/scsi_error.c:2257 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:scsi_tmf_0 state:I stack:30088 pid:193 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:target_completi state:I stack:30624 pid:219 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:target_submissi state:I stack:30624 pid:220 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:xcopy_wq state:I stack:30904 pid:221 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:libertastf state:I stack:30280 pid:289 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:zd1211rw state:I stack:30280 pid:308 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:u132 state:I stack:30216 pid:371 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:uas state:I stack:30280 pid:385 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/1:2 state:R running task stack:22056 pid:630 ppid:2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 usb_kill_urb.part.0+0x19a/0x220 drivers/usb/core/urb.c:728 usb_kill_urb+0x7f/0xa0 drivers/usb/core/urb.c:717 usb_hcd_flush_endpoint+0x356/0x400 drivers/usb/core/hcd.c:1835 usb_disable_endpoint drivers/usb/core/message.c:1303 [inline] usb_disable_interface+0x327/0x3c0 drivers/usb/core/message.c:1349 usb_unbind_interface+0x3d2/0x8e0 drivers/usb/core/driver.c:456 device_remove drivers/base/dd.c:550 [inline] device_remove+0x11f/0x170 drivers/base/dd.c:542 __device_release_driver drivers/base/dd.c:1249 [inline] device_release_driver_internal+0x4a1/0x700 drivers/base/dd.c:1275 bus_remove_device+0x2e3/0x590 drivers/base/bus.c:529 device_del+0x4f3/0xc80 drivers/base/core.c:3704 usb_disable_device+0x356/0x7a0 drivers/usb/core/message.c:1419 usb_disconnect.cold+0x259/0x6ed drivers/usb/core/hub.c:2235 hub_port_connect drivers/usb/core/hub.c:5197 [inline] hub_port_connect_change drivers/usb/core/hub.c:5497 [inline] port_event drivers/usb/core/hub.c:5653 [inline] hub_event+0x1f86/0x45c0 drivers/usb/core/hub.c:5735 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:usbip_event state:I stack:30280 pid:677 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:pvrusb2-context state:S stack:26456 pid:894 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 pvr2_context_thread_func+0x5de/0x850 drivers/media/usb/pvrusb2/pvrusb2-context.c:160 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kvub300c state:I stack:30624 pid:927 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kvub300p state:I stack:30624 pid:928 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kvub300d state:I stack:30280 pid:929 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kmemstick state:I stack:30088 pid:933 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:elousb state:I stack:30824 pid:952 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/0:1H state:I stack:28368 pid:1093 ppid:2 flags:0x00004000 Workqueue: 0x0 (kblockd) Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 worker_thread+0x15c/0x1080 kernel/workqueue.c:2457 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:mld state:I stack:30280 pid:1094 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:ipv6_addrconf state:I stack:30904 pid:1095 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:kworker/0:3 state:D stack:22288 pid:1139 ppid:2 flags:0x00004000 Workqueue: rcu_gp wait_rcu_exp_gp Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1935 synchronize_rcu_expedited_wait_once kernel/rcu/tree_exp.h:571 [inline] synchronize_rcu_expedited_wait kernel/rcu/tree_exp.h:622 [inline] rcu_exp_wait_wake+0x28f/0xf20 kernel/rcu/tree_exp.h:688 process_one_work+0x9bf/0x1710 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:jbd2/sda1-8 state:D stack:27288 pid:1143 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 io_schedule+0xba/0x130 kernel/sched/core.c:8723 bit_wait_io+0x12/0xe0 kernel/sched/wait_bit.c:209 __wait_on_bit+0x60/0x180 kernel/sched/wait_bit.c:49 out_of_line_wait_on_bit+0xd5/0x110 kernel/sched/wait_bit.c:64 wait_on_bit_io include/linux/wait_bit.h:101 [inline] __wait_on_buffer+0x5f/0x70 fs/buffer.c:122 wait_on_buffer include/linux/buffer_head.h:385 [inline] jbd2_journal_commit_transaction+0x3b56/0x6de0 fs/jbd2/commit.c:847 kjournald2+0x1d0/0x880 fs/jbd2/journal.c:210 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:ext4-rsv-conver state:I stack:30904 pid:1144 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 rescuer_thread+0x780/0xcf0 kernel/workqueue.c:2599 kthread+0x2ea/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 task:syslogd state:S stack:26576 pid:1160 ppid:1 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1911 __skb_wait_for_more_packets+0x3f4/0x5e0 net/core/datagram.c:120 __unix_dgram_recvmsg+0x202/0xb80 net/unix/af_unix.c:2451 sock_recvmsg_nosec net/socket.c:995 [inline] sock_recvmsg net/socket.c:1013 [inline] sock_recvmsg net/socket.c:1009 [inline] sock_read_iter+0x344/0x470 net/socket.c:1086 call_read_iter include/linux/fs.h:2185 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x7f6/0x930 fs/read_write.c:470 ksys_read+0x1e8/0x250 fs/read_write.c:613 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f914dba38fe RSP: 002b:00007ffcabb85ec8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f914dba38fe RDX: 00000000000000ff RSI: 000055c5de40d950 RDI: 0000000000000000 RBP: 000055c5de40d910 R08: 00007f914dc33040 R09: 00007f914dc330c0 R10: 00007f914dc32fc0 R11: 0000000000000246 R12: 000055c5de40d9c4 R13: 000055c5de40d950 R14: 0000000000000000 R15: 0000000000000000 task:acpid state:S stack:24376 pid:1163 ppid:1 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 schedule_hrtimeout_range_clock+0x343/0x390 kernel/time/hrtimer.c:2296 poll_schedule_timeout.constprop.0+0xb9/0x190 fs/select.c:244 do_select+0x119c/0x16a0 fs/select.c:607 core_sys_select+0x3c2/0x9c0 fs/select.c:681 do_pselect.constprop.0+0x17b/0x1c0 fs/select.c:763 __do_sys_pselect6 fs/select.c:804 [inline] __se_sys_pselect6 fs/select.c:795 [inline] __x64_sys_pselect6+0x17f/0x230 fs/select.c:795 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f019e9cdbf4 RSP: 002b:00007fffc60f6bf0 EFLAGS: 00000246 ORIG_RAX: 000000000000010e RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f019e9cdbf4 RDX: 0000000000000000 RSI: 00007fffc60f6cf8 RDI: 000000000000000a RBP: 0000000000000007 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffc60f6cf8 R13: 0000000000000040 R14: 000000000000000a R15: 0000000000000000 task:klogd state:R running task stack:26912 pid:1167 ppid:1 flags:0x00000008 Call Trace: sched_show_task kernel/sched/core.c:8879 [inline] sched_show_task+0x44c/0x5c0 kernel/sched/core.c:8853 show_state_filter+0xf0/0x300 kernel/sched/core.c:8924 k_spec drivers/tty/vt/keyboard.c:667 [inline] k_spec+0xe1/0x130 drivers/tty/vt/keyboard.c:656 kbd_keycode drivers/tty/vt/keyboard.c:1524 [inline] kbd_event+0xcdd/0x1790 drivers/tty/vt/keyboard.c:1543 input_to_handler+0x3b9/0x4c0 drivers/input/input.c:130 input_pass_values.part.0+0x230/0x710 drivers/input/input.c:159 input_pass_values drivers/input/input.c:146 [inline] input_event_dispose+0x5cf/0x730 drivers/input/input.c:374 input_handle_event+0x112/0xda0 drivers/input/input.c:402 input_repeat_key+0x23c/0x340 drivers/input/input.c:2263 call_timer_fn+0x1da/0x7c0 kernel/time/timer.c:1474 expire_timers kernel/time/timer.c:1519 [inline] __run_timers.part.0+0x6a2/0xaf0 kernel/time/timer.c:1790 __run_timers kernel/time/timer.c:1768 [inline] run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803 __do_softirq+0x1e4/0xabb kernel/softirq.c:571 invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x113/0x170 kernel/softirq.c:650 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1107 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:on_stack arch/x86/include/asm/stacktrace.h:60 [inline] RIP: 0010:stack_access_ok+0x8c/0x1d0 arch/x86/kernel/unwind_orc.c:347 Code: 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 13 01 00 00 49 39 ed 48 8b 43 10 77 1a 48 39 e8 76 15 <4a> 8d 54 25 00 48 39 d0 0f 93 c0 49 39 d5 0f 92 c2 20 d0 75 38 48 RSP: 0018:ffffc900005771e8 EFLAGS: 00000206 RAX: ffffc90000578000 RBX: ffffc90000577290 RCX: 0000000000000001 RDX: 1ffff920000aee54 RSI: ffffc90000577f00 RDI: ffffc900005772a0 RBP: ffffc90000577f00 R08: ffffffff899fb1fa R09: ffffc900005772c4 R10: fffff520000aee5d R11: ffffc90000577f00 R12: 0000000000000008 R13: ffffc90000570000 R14: ffffc90000577f08 R15: ffffffff899fb1fe deref_stack_reg arch/x86/kernel/unwind_orc.c:357 [inline] unwind_next_frame+0xc3f/0x1cc0 arch/x86/kernel/unwind_orc.c:539 arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122 save_stack+0x151/0x1e0 mm/page_owner.c:127 __set_page_owner+0x1b/0x60 mm/page_owner.c:190 prep_new_page mm/page_alloc.c:2539 [inline] get_page_from_freelist+0x128b/0x2c70 mm/page_alloc.c:4288 __alloc_pages+0x1c7/0x5a0 mm/page_alloc.c:5555 alloc_pages+0x1a6/0x270 mm/mempolicy.c:2285 alloc_slab_page mm/slub.c:1794 [inline] allocate_slab+0x213/0x300 mm/slub.c:1939 new_slab mm/slub.c:1992 [inline] ___slab_alloc+0xa91/0x1400 mm/slub.c:3180 __slab_alloc.constprop.0+0x56/0xa0 mm/slub.c:3279 slab_alloc_node mm/slub.c:3364 [inline] kmem_cache_alloc_node+0x30f/0x3e0 mm/slub.c:3443 __alloc_skb+0x210/0x2f0 net/core/skbuff.c:497 alloc_skb include/linux/skbuff.h:1267 [inline] alloc_skb_with_frags+0x93/0x6c0 net/core/skbuff.c:6124 sock_alloc_send_pskb+0x7a3/0x930 net/core/sock.c:2719 unix_dgram_sendmsg+0x415/0x1b50 net/unix/af_unix.c:1943 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:734 __sys_sendto+0x236/0x340 net/socket.c:2117 __do_sys_sendto net/socket.c:2129 [inline] __se_sys_sendto net/socket.c:2125 [inline] __x64_sys_sendto+0xdd/0x1b0 net/socket.c:2125 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fd22b8730ac Code: 89 02 48 c7 c0 ff ff ff ff eb b8 0f 1f 00 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 19 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 64 c3 0f 1f 00 55 48 83 ec 20 48 89 54 24 10 RSP: 002b:00007fffbf362328 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd22b8730ac RDX: 000000000000003b RSI: 0000559521b28a90 RDI: 0000000000000003 RBP: 0000559521b1f910 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000014 R13: 0000000000000001 R14: 00007fd22b9ee77d R15: 00007fffbf362438 task:udevd state:R running task stack:26800 pid:1178 ppid:1 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 exit_to_user_mode_loop kernel/entry/common.c:159 [inline] exit_to_user_mode_prepare+0x139/0x200 kernel/entry/common.c:203 __syscall_exit_to_user_mode_work kernel/entry/common.c:285 [inline] syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:296 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f842c1f91c3 RSP: 002b:00007fff2a469528 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 RAX: 0000000000000088 RBX: 0000000000000000 RCX: 00007f842c1f91c3 RDX: 0000000000000005 RSI: 00007fff2a469590 RDI: 0000000000000005 RBP: 00007fff2a469590 R08: 00007fff2a469607 R09: 00007fff2a4693d0 R10: 000000000000049a R11: 0000000000000246 R12: 000000000000001c R13: 00007fff2a4696b8 R14: 0000000000000000 R15: 00007fff2a469618 task:dbus-daemon state:S stack:28712 pid:1201 ppid:1 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 schedule_hrtimeout_range_clock+0x343/0x390 kernel/time/hrtimer.c:2296 ep_poll fs/eventpoll.c:1878 [inline] do_epoll_wait+0x12ba/0x1950 fs/eventpoll.c:2256 __do_sys_epoll_wait fs/eventpoll.c:2268 [inline] __se_sys_epoll_wait fs/eventpoll.c:2263 [inline] __x64_sys_epoll_wait+0x158/0x270 fs/eventpoll.c:2263 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f6a2b622e46 RSP: 002b:00007ffdf860a048 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 RAX: ffffffffffffffda RBX: 00007ffdf860a058 RCX: 00007f6a2b622e46 RDX: 0000000000000040 RSI: 00007ffdf860a058 RDI: 0000000000000003 RBP: 00007ffdf860a3e8 R08: 000000000000000a R09: 00007ffdf8690080 R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007ffdf860a3e8 R15: 00007ffdf860a68c task:dhcpcd state:S stack:27120 pid:1214 ppid:1 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 schedule_hrtimeout_range_clock+0x195/0x390 kernel/time/hrtimer.c:2305 poll_schedule_timeout.constprop.0+0xb9/0x190 fs/select.c:244 do_poll fs/select.c:965 [inline] do_sys_poll+0x897/0xea0 fs/select.c:1015 __do_sys_ppoll fs/select.c:1121 [inline] __se_sys_ppoll fs/select.c:1101 [inline] __x64_sys_ppoll+0x210/0x280 fs/select.c:1101 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f5e996b79fb RSP: 002b:00007fffc8084780 EFLAGS: 00000246 ORIG_RAX: 000000000000010f RAX: ffffffffffffffda RBX: 000055e818ae1e20 RCX: 00007f5e996b79fb RDX: 00007fffc80847a0 RSI: 0000000000000004 RDI: 000055e818aff1f0 RBP: 00007fffc8084ac0 R08: 0000000000000008 R09: 00007fffc811f080 R10: 00007fffc8084ac0 R11: 0000000000000246 R12: 00007fffc80847a0 R13: 000055e817be2610 R14: 0000000000000000 R15: 0000000000000000 task:dhcpcd state:S stack:24376 pid:1215 ppid:1214 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 schedule_hrtimeout_range_clock+0x343/0x390 kernel/time/hrtimer.c:2296 poll_schedule_timeout.constprop.0+0xb9/0x190 fs/select.c:244 do_poll fs/select.c:965 [inline] do_sys_poll+0x897/0xea0 fs/select.c:1015 __do_sys_ppoll fs/select.c:1121 [inline] __se_sys_ppoll fs/select.c:1101 [inline] __x64_sys_ppoll+0x210/0x280 fs/select.c:1101 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f5e996b79fb RSP: 002b:00007fffc8084780 EFLAGS: 00000246 ORIG_RAX: 000000000000010f RAX: ffffffffffffffda RBX: 000055e818ae1e20 RCX: 00007f5e996b79fb RDX: 0000000000000000 RSI: 0000000000000003 RDI: 000055e818ae1e00 RBP: 00007fffc8084ac0 R08: 0000000000000008 R09: 000055e818af61a0 R10: 00007fffc8084ac0 R11: 0000000000000246 R12: 0000000000000000 R13: 000055e817be2610 R14: 0000000000000003 R15: 0000000000000000 task:dhcpcd state:S stack:28008 pid:1216 ppid:1214 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 schedule_hrtimeout_range_clock+0x343/0x390 kernel/time/hrtimer.c:2296 poll_schedule_timeout.constprop.0+0xb9/0x190 fs/select.c:244 do_poll fs/select.c:965 [inline] do_sys_poll+0x897/0xea0 fs/select.c:1015 __do_sys_ppoll fs/select.c:1121 [inline] __se_sys_ppoll fs/select.c:1101 [inline] __x64_sys_ppoll+0x210/0x280 fs/select.c:1101 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f5e996b79fb RSP: 002b:00007fffc8084780 EFLAGS: 00000246 ORIG_RAX: 000000000000010f RAX: ffffffffffffffda RBX: 000055e818ae1e20 RCX: 00007f5e996b79fb RDX: 0000000000000000 RSI: 0000000000000004 RDI: 000055e818aeb650 RBP: 00007fffc8084ac0 R08: 0000000000000008 R09: 00007f5e99783a60 R10: 00007fffc8084ac0 R11: 0000000000000246 R12: 0000000000000000 R13: 000055e817be2610 R14: 0000000000000003 R15: 0000000000000000 task:dhcpcd state:S stack:28208 pid:1217 ppid:1214 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 schedule_hrtimeout_range_clock+0x343/0x390 kernel/time/hrtimer.c:2296 poll_schedule_timeout.constprop.0+0xb9/0x190 fs/select.c:244 do_poll fs/select.c:965 [inline] do_sys_poll+0x897/0xea0 fs/select.c:1015 __do_sys_ppoll fs/select.c:1121 [inline] __se_sys_ppoll fs/select.c:1101 [inline] __x64_sys_ppoll+0x210/0x280 fs/select.c:1101 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f5e996b79fb RSP: 002b:00007fffc8084780 EFLAGS: 00000246 ORIG_RAX: 000000000000010f RAX: ffffffffffffffda RBX: 000055e818ae1e20 RCX: 00007f5e996b79fb RDX: 0000000000000000 RSI: 0000000000000005 RDI: 000055e818aeb650 RBP: 00007fffc8084ac0 R08: 0000000000000008 R09: 00007f5e99783a60 R10: 00007fffc8084ac0 R11: 0000000000000246 R12: 0000000000000000 R13: 000055e817be2610 R14: 0000000000000003 R15: 0000000000000000 task:sshd state:S stack:27952 pid:1235 ppid:1 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 schedule_hrtimeout_range_clock+0x343/0x390 kernel/time/hrtimer.c:2296 poll_schedule_timeout.constprop.0+0xb9/0x190 fs/select.c:244 do_select+0x119c/0x16a0 fs/select.c:607 core_sys_select+0x3c2/0x9c0 fs/select.c:681 do_pselect.constprop.0+0x17b/0x1c0 fs/select.c:763 __do_sys_pselect6 fs/select.c:804 [inline] __se_sys_pselect6 fs/select.c:795 [inline] __x64_sys_pselect6+0x17f/0x230 fs/select.c:795 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fb85e581d83 RSP: 002b:00007fff535d2f60 EFLAGS: 00000246 ORIG_RAX: 000000000000010e RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fb85e581d83 RDX: 0000000000000000 RSI: 000055ce187484c0 RDI: 0000000000000007 RBP: 00007fff535d3148 R08: 0000000000000000 R09: 00007fff535d2fa0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000064 R13: 000055ce187484c0 R14: 000000000000018c R15: 000055ce1709fe85 task:getty state:S stack:24376 pid:1237 ppid:1 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1911 wait_woken+0x18b/0x1f0 kernel/sched/wait.c:459 n_tty_read+0x1051/0x13e0 drivers/tty/n_tty.c:2243 iterate_tty_read drivers/tty/tty_io.c:852 [inline] tty_read+0x30a/0x5a0 drivers/tty/tty_io.c:927 call_read_iter include/linux/fs.h:2185 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x67d/0x930 fs/read_write.c:470 ksys_read+0x127/0x250 fs/read_write.c:613 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fe47673d8fe RSP: 002b:00007ffe4cbcc2a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00005639e48cd910 RCX: 00007fe47673d8fe RDX: 0000000000000001 RSI: 00007ffe4cbcc2c0 RDI: 0000000000000000 RBP: 00005639e48cd970 R08: 0000000000000007 R09: 00005639e48cecd0 R10: 0000000000000063 R11: 0000000000000246 R12: 00005639e48cd9ac R13: 00007ffe4cbcc2c0 R14: 0000000000000000 R15: 00005639e48cd9ac task:dhcpcd state:S stack:27616 pid:1239 ppid:1215 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 schedule_hrtimeout_range_clock+0x343/0x390 kernel/time/hrtimer.c:2296 poll_schedule_timeout.constprop.0+0xb9/0x190 fs/select.c:244 do_poll fs/select.c:965 [inline] do_sys_poll+0x897/0xea0 fs/select.c:1015 __do_sys_ppoll fs/select.c:1121 [inline] __se_sys_ppoll fs/select.c:1101 [inline] __x64_sys_ppoll+0x210/0x280 fs/select.c:1101 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f5e996b79fb RSP: 002b:00007fffc8084780 EFLAGS: 00000246 ORIG_RAX: 000000000000010f RAX: ffffffffffffffda RBX: 000055e818ae1e20 RCX: 00007f5e996b79fb RDX: 0000000000000000 RSI: 0000000000000002 RDI: 000055e818aeccc0 RBP: 00007fffc8084ac0 R08: 0000000000000008 R09: 00000000800a0142 R10: 00007fffc8084ac0 R11: 0000000000000246 R12: 0000000000000000 R13: 000055e817be2610 R14: 0000000000000003 R15: 0000000000000000 task:sshd state:S stack:25608 pid:1277 ppid:1235 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 schedule_hrtimeout_range_clock+0x195/0x390 kernel/time/hrtimer.c:2305 poll_schedule_timeout.constprop.0+0xb9/0x190 fs/select.c:244 do_select+0x119c/0x16a0 fs/select.c:607 core_sys_select+0x3c2/0x9c0 fs/select.c:681 do_pselect.constprop.0+0x17b/0x1c0 fs/select.c:763 __do_sys_pselect6 fs/select.c:804 [inline] __se_sys_pselect6 fs/select.c:795 [inline] __x64_sys_pselect6+0x17f/0x230 fs/select.c:795 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f0e31052d83 RSP: 002b:00007fff2bffea90 EFLAGS: 00000246 ORIG_RAX: 000000000000010e RAX: ffffffffffffffda RBX: 00000000000668a0 RCX: 00007f0e31052d83 RDX: 0000560048fd08d0 RSI: 0000560048fd0750 RDI: 000000000000000a RBP: 0000560048fce030 R08: 00007fff2bffeac0 R09: 00007fff2bffead0 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 R13: 0000000000000001 R14: 00007fff2bffeb48 R15: 00007fff2bffebc8 task:syz-fuzzer state:S stack:27528 pid:1279 ppid:1277 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579 futex_wait_queue+0xf5/0x1e0 kernel/futex/waitwake.c:355 futex_wait+0x28e/0x680 kernel/futex/waitwake.c:656 do_futex+0x1af/0x300 kernel/futex/syscalls.c:106 __do_sys_futex kernel/futex/syscalls.c:183 [inline] __se_sys_futex kernel/futex/syscalls.c:164 [inline] __x64_sys_futex+0x1b0/0x4a0 kernel/futex/syscalls.c:164 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x4675e3 RSP: 002b:000000c00055aed0 EFLAGS: 00000286 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004675e3 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 0000000001f3bb40 RBP: 000000c00055af18 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000286 R12: 00007ffd60b8f9e0 R13: 0000000000000000 R14: 000000c000001ba0 R15: 00007f80f251c0ea task:syz-fuzzer state:S stack:25896 pid:1280 ppid:1277 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5191 [inline] __schedule+0x979/0x2770 kernel/sched/core.c:6503 schedule+0xda/0x1b0 kernel/sched/core.c:6579