rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2662 jiffies s: 5289 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: 5281 Comm: kworker/0:4 Not tainted 6.11.0-rc4-syzkaller-00002-gb0da640826ba #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: events request_firmware_work_func
RIP: 0010:unwind_get_return_address+0x5c/0xe0 arch/x86/kernel/unwind_orc.c:369
Code: 2b 31 ff 89 ee e8 74 a2 4d 00 85 ed 75 13 e8 2b a0 4d 00 31 db 48 89 d8 5b 5d 41 5c c3 cc cc cc cc e8 18 a0 4d 00 4c 8d 63 48 <48> b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 80 3c 02 00 75
RSP: 0018:ffffc90000007198 EFLAGS: 00000006
RAX: 0000000000010103 RBX: ffffc900000071c0 RCX: ffffffff813cd86c
RDX: ffff88802b07bc00 RSI: ffffffff813cd888 RDI: 0000000000000005
RBP: 0000000000000002 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000000 R12: ffffc90000007208
R13: ffffffff81761620 R14: ffffc90000007280 R15: ffff88802b07bc00
FS:  0000000000000000(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c3a8430 CR3: 000000000db7c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 arch_stack_walk+0xc1/0x170 arch/x86/kernel/stacktrace.c:26
 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:__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 26 9f 54 f6 48 89 df e8 3e 1c 55 f6 f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 <bf> 01 00 00 00 e8 65 8f 46 f6 65 8b 05 d6 0f f0 74 85 c0 74 16 5b
RSP: 0018:ffffc90000007a68 EFLAGS: 00000246
RAX: 0000000000000002 RBX: ffffffff9511cf78 RCX: 1ffffffff28c55ed
RDX: 0000000000000000 RSI: ffffffff8b4cc4c0 RDI: ffffffff8bb098c0
RBP: 0000000000000286 R08: 0000000000000001 R09: fffffbfff28c54e0
R10: ffffffff9462a707 R11: 0000000000000000 R12: ffff88802054ca00
R13: 0000000000000004 R14: 0000000000000004 R15: ffff88802054ca00
 __debug_check_no_obj_freed lib/debugobjects.c:999 [inline]
 debug_check_no_obj_freed+0x328/0x600 lib/debugobjects.c:1020
 slab_free_hook mm/slub.c:2219 [inline]
 slab_free mm/slub.c:4473 [inline]
 kmem_cache_free+0x26f/0x3a0 mm/slub.c:4548
 kfree_skbmem+0x1a4/0x1f0 net/core/skbuff.c:1146
 __kfree_skb net/core/skbuff.c:1203 [inline]
 consume_skb net/core/skbuff.c:1426 [inline]
 consume_skb+0xdd/0x160 net/core/skbuff.c:1420
 mac80211_hwsim_tx_frame+0x1f3/0x2a0 drivers/net/wireless/virtual/mac80211_hwsim.c:2216
 __mac80211_hwsim_beacon_tx drivers/net/wireless/virtual/mac80211_hwsim.c:2232 [inline]
 mac80211_hwsim_beacon_tx+0x592/0xa00 drivers/net/wireless/virtual/mac80211_hwsim.c:2315
 __iterate_interfaces+0x2d0/0x5d0 net/mac80211/util.c:772
 ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 net/mac80211/util.c:808
 mac80211_hwsim_beacon+0x105/0x200 drivers/net/wireless/virtual/mac80211_hwsim.c:2345
 __run_hrtimer kernel/time/hrtimer.c:1689 [inline]
 __hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1753
 hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1770
 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:console_flush_all+0xa19/0xd70 kernel/printk/printk.c:3055
Code: e8 ac 6c 26 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 2a 23 1f 00 48 85 db 0f 85 8b 01 00 00 e8 ac 20 1f 00 fb 48 8b 04 24 <4c> 89 fa 83 e2 07 0f b6 00 38 d0 7f 08 84 c0 0f 85 a9 02 00 00 41
RSP: 0018:ffffc900038df538 EFLAGS: 00000293
RAX: fffff5200071bece RBX: 0000000000000000 RCX: ffffffff816b57e6
RDX: ffff88802b07bc00 RSI: ffffffff816b57f4 RDI: 0000000000000007
RBP: dffffc0000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000200
R13: ffffffff8e9d0758 R14: ffffffff8e9d0700 R15: ffffc900038df670
 console_unlock+0xae/0x290 kernel/printk/printk.c:3118
 vprintk_emit+0x409/0x600 kernel/printk/printk.c:2348
 dev_vprintk_emit drivers/base/core.c:4912 [inline]
 dev_printk_emit+0xfb/0x140 drivers/base/core.c:4923
 __dev_printk+0xf5/0x270 drivers/base/core.c:4935
 _dev_err+0xe5/0x120 drivers/base/core.c:4978
 ath9k_init_htc_services.constprop.0+0xf5/0x820 drivers/net/wireless/ath/ath9k/htc_drv_init.c:220
 ath9k_htc_probe_device+0x243/0x2660 drivers/net/wireless/ath/ath9k/htc_drv_init.c:959
 ath9k_htc_hw_init+0x33/0x70 drivers/net/wireless/ath/ath9k/htc_hst.c:529
 ath9k_hif_usb_firmware_cb+0x272/0x620 drivers/net/wireless/ath/ath9k/hif_usb.c:1273
 request_firmware_work_func+0x13a/0x250 drivers/base/firmware_loader/main.c:1167
 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
 process_scheduled_works kernel/workqueue.c:3312 [inline]
 worker_thread+0x6c8/0xf20 kernel/workqueue.c:3390
 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>