syzbot

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WARNING: CPU: 0 PID: 9 at net/mac80211/tx.c:4934 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4934 [inline]
WARNING: CPU: 0 PID: 9 at net/mac80211/tx.c:4934 __ieee80211_beacon_get+0x1952/0x1f50 net/mac80211/tx.c:5255
Modules linked in:
CPU: 0 PID: 9 Comm: kworker/u4:0 Not tainted 6.1.147-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: phy6 ieee80211_csa_finalize_work
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4934 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1952/0x1f50 net/mac80211/tx.c:5255
Code: ff ff ff e8 20 59 e5 f7 0f 0b 48 8b 7c 24 20 e8 74 dd 7f fe e9 dd e9 ff ff e8 0a 59 e5 f7 0f 0b e9 f1 ee ff ff e8 fe 58 e5 f7 <0f> 0b e9 61 f2 ff ff e8 f2 58 e5 f7 48 c7 c7 b0 56 fa 8d 4c 89 f6
RSP: 0018:ffffc900000078a0 EFLAGS: 00010246
RAX: ffffffff899b6de2 RBX: 0000000000000000 RCX: ffff88813fec0000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007aa8 R08: ffff88813fec0000 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: 1ffff92000000f2c
R13: dffffc0000000000 R14: ffff88805930a258 R15: ffff888031417200
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c008215000 CR3: 000000000c88e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 ieee80211_beacon_get_tim+0x5b/0x4d0 net/mac80211/tx.c:5342
 ieee80211_beacon_get include/net/mac80211.h:5262 [inline]
 mac80211_hwsim_beacon_tx+0x21c/0xae0 drivers/net/wireless/mac80211_hwsim.c:2091
 __iterate_interfaces+0x243/0x500 net/mac80211/util.c:788
 ieee80211_iterate_active_interfaces_atomic+0xd7/0x170 net/mac80211/util.c:824
 mac80211_hwsim_beacon+0xb7/0x1b0 drivers/net/wireless/mac80211_hwsim.c:2147
 __run_hrtimer kernel/time/hrtimer.c:1752 [inline]
 __hrtimer_run_queues+0x554/0xd60 kernel/time/hrtimer.c:1816
 hrtimer_run_softirq+0x183/0x2a0 kernel/time/hrtimer.c:1833
 handle_softirqs+0x2a1/0x920 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xa5/0x100 kernel/locking/spinlock.c:194
Code: 74 05 e8 2e e9 66 f7 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4b f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> b6 74 37 f7 65 8b 05 87 35 e2 75 85 c0 74 3c 48 c7 04 24 0e 36
RSP: 0018:ffffc900000e7660 EFLAGS: 00000206
RAX: f35ee534c82faf00 RBX: 0000000000000a06 RCX: f35ee534c82faf00
RDX: dffffc0000000000 RSI: ffffffff8a8c0460 RDI: 0000000000000001
RBP: ffffc900000e76e8 R08: dffffc0000000000 R09: fffffbfff215ba61
R10: fffffbfff215ba61 R11: 1ffffffff215ba60 R12: dffffc0000000000
R13: ffff8880317a8e30 R14: ffffffff8d1c9eb0 R15: 1ffff9200001cecc
 __stack_depot_save+0x421/0x460 lib/stackdepot.c:502
 kasan_save_stack+0x4c/0x60 mm/kasan/common.c:46
 __kasan_record_aux_stack+0xb2/0xc0 mm/kasan/generic.c:486
 kvfree_call_rcu+0x108/0x870 kernel/rcu/tree.c:3405
 ieee80211_vif_use_reserved_switch+0x2386/0x2890 net/mac80211/chan.c:1750
 ieee80211_link_use_reserved_context+0x37f/0x5c0 net/mac80211/chan.c:1921
 __ieee80211_csa_finalize net/mac80211/cfg.c:3547 [inline]
 ieee80211_csa_finalize+0x4dd/0xd30 net/mac80211/cfg.c:3579
 ieee80211_csa_finalize_work+0xf2/0x130 net/mac80211/cfg.c:3604
 process_one_work+0x898/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaa2/0x1250 kernel/workqueue.c:2439
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
----------------
Code disassembly (best guess):
   0:	74 05                	je     0x7
   2:	e8 2e e9 66 f7       	call   0xf766e935
   7:	48 c7 44 24 20 00 00 	movq   $0x0,0x20(%rsp)
   e:	00 00
  10:	9c                   	pushf
  11:	8f 44 24 20          	pop    0x20(%rsp)
  15:	f6 44 24 21 02       	testb  $0x2,0x21(%rsp)
  1a:	75 4b                	jne    0x67
  1c:	f7 c3 00 02 00 00    	test   $0x200,%ebx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
* 2a:	e8 b6 74 37 f7       	call   0xf73774e5 <-- trapping instruction
  2f:	65 8b 05 87 35 e2 75 	mov    %gs:0x75e23587(%rip),%eax        # 0x75e235bd
  36:	85 c0                	test   %eax,%eax
  38:	74 3c                	je     0x76
  3a:	48                   	rex.W
  3b:	c7                   	.byte 0xc7
  3c:	04 24                	add    $0x24,%al
  3e:	0e                   	(bad)
  3f:	36                   	ss