rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2690 jiffies s: 20469 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 UID: 0 PID: 5266 Comm: kworker/1:3 Not tainted 6.11.0-rc5-syzkaller-00081-gd5d547aa7b51 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: usb_hub_wq hub_event
RIP: 0010:unwind_next_frame+0x11ff/0x23a0 arch/x86/kernel/unwind_orc.c:672
Code: 4e 00 49 39 ef 0f 83 b5 0a 00 00 e8 0b cf 4e 00 bf 01 00 00 00 e8 31 af 1e 00 31 ff 65 8b 1d 10 ea c6 7e 89 de e8 31 d1 4e 00 <85> db 0f 84 7f 0a 00 00 bb 01 00 00 00 e9 3b ee ff ff e8 da ce 4e
RSP: 0018:ffffc90000a18250 EFLAGS: 00000006
RAX: 0000000000010102 RBX: 0000000000010102 RCX: ffffffff813cf0ff
RDX: ffff888063d39e00 RSI: 0000000000000000 RDI: 0000000000000005
RBP: ffffc900038ef928 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000010102 R11: 0000000000000000 R12: ffffc900038e8000
R13: ffffc900038f0000 R14: ffffc900038ef930 R15: ffffc900038ef8d0
FS:  0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3a9617 CR3: 000000005821c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 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:2252 [inline]
 slab_free mm/slub.c:4473 [inline]
 kfree+0x12a/0x3b0 mm/slub.c:4594
 dummy_timer+0x1750/0x38d0 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:preempt_count arch/x86/include/asm/preempt.h:26 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:182 [inline]
RIP: 0010:write_comp_data+0x11/0x90 kernel/kcov.c:245
Code: cc cc cc cc 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 49 89 d2 49 89 f8 49 89 f1 65 48 8b 15 7f 1a 78 7e <65> 8b 05 80 1a 78 7e a9 00 01 ff 00 74 1d f6 c4 01 74 67 a9 00 00
RSP: 0018:ffffc90000a18b78 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 00000000002af31d RCX: ffffffff892431ed
RDX: ffff888063d39e00 RSI: 00000000000f4240 RDI: 0000000000000005
RBP: 00000001ad7f29ab R08: 0000000000000005 R09: 00000000000f4240
R10: 0000000000989680 R11: 0000000000000000 R12: 0000000000989680
R13: 0000000000000001 R14: 0000000000044b82 R15: 0000000000000000
 pie_calculate_probability+0x2ad/0x850 net/sched/sch_pie.c:347
 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:do_slab_free mm/slub.c:4424 [inline]
RIP: 0010:___cache_free+0x6e/0xf0 mm/slub.c:4504
Code: 00 00 66 90 8b 47 30 25 00 00 00 82 3d 00 00 00 80 b8 00 00 00 00 48 0f 45 f8 65 48 8b 05 02 af 21 7e 49 03 45 00 48 8b 50 08 <48> 39 78 10 75 48 41 8b 4d 28 48 8b 00 48 89 04 0b 48 8d 4a 08 49
RSP: 0018:ffffc900038ef810 EFLAGS: 00000282
RAX: ffff8880b9342e80 RBX: ffff88807dc4d780 RCX: ffffc90014d06000
RDX: 0000000000121009 RSI: ffffffff813e7a46 RDI: ffffea0001f71340
RBP: ffffc900038ef830 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff81ea9359
R13: ffff8880158418c0 R14: ffffc900038ef878 R15: ffff88807dc4d780
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x4e/0x140 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x192/0x1e0 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:322
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3988 [inline]
 slab_alloc_node mm/slub.c:4037 [inline]
 __kmalloc_cache_noprof+0x11e/0x300 mm/slub.c:4184
 kmalloc_noprof include/linux/slab.h:681 [inline]
 usb_control_msg+0xbd/0x4b0 drivers/usb/core/message.c:144
 get_port_status drivers/usb/core/hub.c:604 [inline]
 hub_ext_port_status+0x14e/0x670 drivers/usb/core/hub.c:621
 usb_hub_port_status drivers/usb/core/hub.c:671 [inline]
 port_event drivers/usb/core/hub.c:5714 [inline]
 hub_event+0x6e0/0x4e10 drivers/usb/core/hub.c:5903
 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
 process_scheduled_works kernel/workqueue.c:3312 [inline]
 worker_thread+0x6c8/0xed0 kernel/workqueue.c:3389
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>