rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2678 jiffies s: 7869 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 UID: 0 PID: 941 Comm: kworker/0:2 Not tainted 6.11.0-rc7-syzkaller #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+0x114b/0x23a0 arch/x86/kernel/unwind_orc.c:665
Code: e8 aa d1 4e 00 41 39 ec 0f 85 b1 00 00 00 e8 1c d0 4e 00 48 8b 54 24 10 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 <0f> 85 5c 0f 00 00 48 8d 7b 08 48 8b 6b 38 48 b8 00 00 00 00 00 fc
RSP: 0018:ffffc90000007198 EFLAGS: 00000046
RAX: dffffc0000000000 RBX: ffffc90000007218 RCX: ffffffff813d0026
RDX: 1ffff92000000e4a RSI: ffffffff813d0034 RDI: 0000000000000004
RBP: 0000000000000001 R08: 0000000000000004 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000001 R14: 0000000000000000 R15: ffffc9000000724e
FS:  0000000000000000(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c422cd9 CR3: 000000000db7c000 CR4: 00000000003526f0
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
 poison_kmalloc_redzone mm/kasan/common.c:370 [inline]
 __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:387
 kmalloc_noprof include/linux/slab.h:681 [inline]
 dummy_urb_enqueue+0x8d/0x8a0 drivers/usb/gadget/udc/dummy_hcd.c:1271
 usb_hcd_submit_urb+0x2d1/0x2090 drivers/usb/core/hcd.c:1533
 usb_submit_urb+0x87c/0x1730 drivers/usb/core/urb.c:581
 ath9k_hif_usb_reg_in_cb+0x494/0x690 drivers/net/wireless/ath/ath9k/hif_usb.c:792
 __usb_hcd_giveback_urb+0x389/0x6e0 drivers/usb/core/hcd.c:1650
 usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1734
 dummy_timer+0x17c3/0x38d0 drivers/usb/gadget/udc/dummy_hcd.c:1987
 __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:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x29/0x50 kernel/locking/spinlock.c:202
Code: 90 f3 0f 1e fa 53 48 8b 74 24 08 48 89 fb 48 83 c7 18 e8 fa 22 50 f6 48 89 df e8 12 a0 50 f6 e8 1d 7f 79 f6 fb bf 01 00 00 00 <e8> 42 13 42 f6 65 8b 05 c3 3d ea 74 85 c0 74 06 5b c3 cc cc cc cc
RSP: 0018:ffffc90000007d48 EFLAGS: 00000202
RAX: 0000000000168da8 RBX: ffff8880b882a840 RCX: 1ffffffff2d26fb8
RDX: 0000000000000000 RSI: ffffffff8b4cd720 RDI: 0000000000000001
RBP: ffffffff890f1020 R08: 0000000000000001 R09: fffffbfff2d248e6
R10: ffffffff96924737 R11: 0000000000000000 R12: 0000000000000000
R13: ffffc90000007e10 R14: ffff8880b882a840 R15: dffffc0000000000
 expire_timers kernel/time/timer.c:1842 [inline]
 __run_timers+0x73b/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 96 22 50 f6 48 89 df e8 ae 9f 50 f6 f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 <bf> 01 00 00 00 e8 d5 12 42 f6 65 8b 05 56 3d ea 74 85 c0 74 16 5b
RSP: 0018:ffffc9000405f718 EFLAGS: 00000246
RAX: 0000000000000002 RBX: ffffffff8ddc5840 RCX: 1ffffffff2d26fb8
RDX: 0000000000000000 RSI: ffffffff8b4cd720 RDI: ffffffff8bb0fb40
RBP: 0000000000000286 R08: 0000000000000001 R09: fffffbfff2d248e6
R10: ffffffff96924737 R11: ffff8880b8928a40 R12: 0000000000000246
R13: 0000000000000200 R14: 0000000000000003 R15: ffff88801ecb1a38
 rcu_read_unlock_special kernel/rcu/tree_plugin.h:691 [inline]
 __rcu_read_unlock+0x2b4/0x580 kernel/rcu/tree_plugin.h:436
 rcu_read_unlock include/linux/rcupdate.h:871 [inline]
 page_ext_put+0x48/0xd0 mm/page_ext.c:550
 __reset_page_owner+0x28d/0x400 mm/page_owner.c:300
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1101 [inline]
 free_unref_page+0x64a/0xe40 mm/page_alloc.c:2619
 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:3992 [inline]
 slab_alloc_node mm/slub.c:4041 [inline]
 __kmalloc_cache_noprof+0x11e/0x300 mm/slub.c:4188
 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>
vkms_vblank_simulate: vblank timer overrun