rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2652 jiffies s: 51397 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 19538 Comm: syz.1.4598 Not tainted 6.10.0-syzkaller-04472-g51835949dda3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
RIP: 0010:orc_ip arch/x86/kernel/unwind_orc.c:80 [inline]
RIP: 0010:__orc_find+0x52/0x130 arch/x86/kernel/unwind_orc.c:102
Code: ff 89 de 49 8d 6c 86 fc e8 6b ec 50 00 85 db 0f 84 dd 00 00 00 e8 5e f1 50 00 4c 39 f5 0f 82 d3 00 00 00 4c 89 f3 4c 89 34 24 <49> be 00 00 00 00 00 fc ff df eb 17 e8 3d f1 50 00 49 8d 5f 04 4c
RSP: 0018:ffffc90000007200 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffffffff902a2c24 RCX: ffffffff813d0c45
RDX: ffff888056e38000 RSI: ffffffff813d0c52 RDI: 0000000000000005
RBP: ffffffff902a2c24 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000006 R12: ffffffff85a1a7e9
R13: ffffffff90c2d9d0 R14: ffffffff902a2c24 R15: ffffc90000007305
FS:  0000555584c70500(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d211ff8 CR3: 0000000068af8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 orc_find arch/x86/kernel/unwind_orc.c:227 [inline]
 unwind_next_frame+0x335/0x23a0 arch/x86/kernel/unwind_orc.c:494
 arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
 poison_slab_object+0xf7/0x160 mm/kasan/common.c:240
 __kasan_slab_free+0x32/0x50 mm/kasan/common.c:256
 kasan_slab_free include/linux/kasan.h:184 [inline]
 slab_free_hook mm/slub.c:2196 [inline]
 slab_free mm/slub.c:4438 [inline]
 kfree+0x12a/0x3b0 mm/slub.c:4559
 dummy_timer+0x1783/0x3900 drivers/usb/gadget/udc/dummy_hcd.c:1981
 __run_hrtimer kernel/time/hrtimer.c:1689 [inline]
 __hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1753
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1815
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x43/0xb0 arch/x86/kernel/apic/apic.c:1043
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:write_comp_data+0x7d/0x90 kernel/kcov.c:262
Code: 00 00 4a 8d 34 dd 28 00 00 00 48 39 f2 72 1b 48 83 c7 01 48 89 38 4c 89 44 30 e0 4c 89 4c 30 e8 4c 89 54 30 f0 4a 89 4c d8 20 <c3> cc cc cc cc 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 90 90 90
RSP: 0018:ffffc90000007b78 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc90013013820 RCX: ffffffff88fa29cc
RDX: ffff888056e38000 RSI: 0000000000000000 RDI: 0000000000000007
RBP: ffff88802c2d8300 R08: 0000000000000007 R09: 0000000000000000
R10: fffffff0a3da8872 R11: 0000000000000004 R12: fffffff0a3da8872
R13: 0000000000000000 R14: fffffff0a3da8872 R15: 0000000000000000
 pie_calculate_probability+0x34c/0x850 net/sched/sch_pie.c:376
 fq_pie_timer+0x215/0x5a0 net/sched/sch_fq_pie.c:398
 call_timer_fn+0x1a0/0x610 kernel/time/timer.c:1792
 expire_timers kernel/time/timer.c:1843 [inline]
 __run_timers+0x74b/0xaf0 kernel/time/timer.c:2417
 __run_timer_base kernel/time/timer.c:2428 [inline]
 __run_timer_base kernel/time/timer.c:2421 [inline]
 run_timer_base+0x111/0x190 kernel/time/timer.c:2437
 run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2447
 handle_softirqs+0x216/0x8f0 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu kernel/softirq.c:637 [inline]
 irq_exit_rcu+0xbb/0x120 kernel/softirq.c:649
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:194
Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 e6 40 7c f6 48 89 df e8 ce bd 7c f6 f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 <bf> 01 00 00 00 e8 15 36 6e f6 65 8b 05 f6 41 14 75 85 c0 74 16 5b
RSP: 0018:ffffc90003127b30 EFLAGS: 00000246
RAX: 0000000000000002 RBX: ffffffff8edcef00 RCX: 1ffffffff285e8fe
RDX: 0000000000000000 RSI: ffffffff8b2cb4c0 RDI: ffffffff8b904ee0
RBP: 0000000000000293 R08: 0000000000000001 R09: fffffbfff2851a80
R10: ffffffff9428d407 R11: ffff8880b9228a40 R12: 1ffff92000624f6e
R13: ffff8880239f923c R14: ffff8880237dc300 R15: ffff8880237dc318
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 usb_hcd_poll_rh_status+0x572/0x7f0 drivers/usb/core/hcd.c:762
 dummy_pullup+0x212/0x270 drivers/usb/gadget/udc/dummy_hcd.c:926
 usb_gadget_disconnect_locked+0x13f/0x4e0 drivers/usb/gadget/udc/core.c:779
 gadget_unbind_driver+0xd7/0x4e0 drivers/usb/gadget/udc/core.c:1668
 device_remove+0xc8/0x170 drivers/base/dd.c:566
 __device_release_driver drivers/base/dd.c:1270 [inline]
 device_release_driver_internal+0x44a/0x610 drivers/base/dd.c:1293
 driver_detach+0xd8/0x1b0 drivers/base/dd.c:1356
 bus_remove_driver+0x13b/0x2c0 drivers/base/bus.c:742
 driver_unregister+0x76/0xb0 drivers/base/driver.c:274
 usb_gadget_unregister_driver+0x49/0x70 drivers/usb/gadget/udc/core.c:1733
 raw_release+0x1a9/0x2f0 drivers/usb/gadget/legacy/raw_gadget.c:462
 __fput+0x408/0xbb0 fs/file_table.c:422
 task_work_run+0x14e/0x250 kernel/task_work.c:222
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa264975a19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe17b2c618 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 0000000000122530 RCX: 00007fa264975a19
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: ffffffffffffffff R08: 0000000000000001 R09: 0000000417b2c93f
R10: 00007fa264800000 R11: 0000000000000246 R12: 00007fa264b03f6c
R13: 000000000000015e R14: 00007fa264b05a60 R15: 00007fa264b03f60
 </TASK>