------------[ cut here ]------------
WARNING: CPU: 0 PID: 10209 at net/mac80211/tx.c:5048 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5048 [inline]
WARNING: CPU: 0 PID: 10209 at net/mac80211/tx.c:5048 __ieee80211_beacon_get+0x1141/0x1520 net/mac80211/tx.c:5459
Modules linked in:
CPU: 0 PID: 10209 Comm: syz.3.1080 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5048 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1141/0x1520 net/mac80211/tx.c:5459
Code: f7 4c 89 ef e8 70 5b ba f7 45 31 ed 4c 8b bc 24 a0 00 00 00 e9 7f fe ff ff e8 ab 6f 7c f7 0f 0b e9 61 f8 ff ff e8 9f 6f 7c f7 <0f> 0b e9 85 fb ff ff e8 93 6f 7c f7 48 c7 c7 60 bd 65 8e 4c 89 e6
RSP: 0018:ffffc90000007a18 EFLAGS: 00010246
RAX: ffffffff8a0b01e1 RBX: dffffc0000000000 RCX: ffff88802bdd8000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff88802bdd8000 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff88805dd2a440
R13: ffff88801f2e8824 R14: ffff88805dd2a930 R15: ffff88801f2e8800
FS:  0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2da22ffc CR3: 000000000cf32000 CR4: 00000000003506f0
Call Trace:
 <IRQ>
 ieee80211_beacon_get_tim+0xbf/0x580 net/mac80211/tx.c:5586
 ieee80211_beacon_get include/net/mac80211.h:5440 [inline]
 mac80211_hwsim_beacon_tx+0x3bd/0x770 drivers/net/wireless/virtual/mac80211_hwsim.c:2265
 __iterate_interfaces+0x225/0x4c0 net/mac80211/util.c:766
 ieee80211_iterate_active_interfaces_atomic+0xdb/0x180 net/mac80211/util.c:802
 mac80211_hwsim_beacon+0xbb/0x1b0 drivers/net/wireless/virtual/mac80211_hwsim.c:2295
 __run_hrtimer kernel/time/hrtimer.c:1754 [inline]
 __hrtimer_run_queues+0x525/0xc10 kernel/time/hrtimer.c:1818
 hrtimer_run_softirq+0x177/0x290 kernel/time/hrtimer.c:1835
 handle_softirqs+0x27d/0x820 kernel/softirq.c:578
 __do_softirq kernel/softirq.c:612 [inline]
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
 sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:truncate_inode_folio+0x48/0x70 mm/truncate.c:194
Code: 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 4c 89 ff e8 59 4f 24 00 4d 39 37 74 0c e8 df cc cb ff b8 fb ff ff ff eb 17 <e8> d3 cc cb ff 48 89 df e8 1b 00 00 00 48 89 df e8 03 ae f9 ff 31
RSP: 0018:ffffc9000361f3e0 EFLAGS: 00000246
RAX: 1ffffd40002be46b RBX: ffffea00015f2340 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: ffffea00015f2340 RDI: ffff888026653990
RBP: ffffc9000361f650 R08: ffffea00015f2307 R09: 1ffffd40002be460
R10: dffffc0000000000 R11: fffff940002be461 R12: ffff888026653998
R13: ffffc9000361f568 R14: ffff888026653990 R15: ffffea00015f2358
 shmem_undo_range+0x3f0/0x1a80 mm/shmem.c:1022
 shmem_truncate_range mm/shmem.c:1135 [inline]
 shmem_evict_inode+0x285/0xa70 mm/shmem.c:1264
 evict+0x4b7/0x8a0 fs/inode.c:705
 __dentry_kill+0x412/0x630 fs/dcache.c:611
 dentry_kill+0xb8/0x290 fs/dcache.c:-1
 dput+0xfe/0x1e0 fs/dcache.c:918
 __fput+0x5b2/0x940 fs/file_table.c:426
 task_work_run+0x1d4/0x260 kernel/task_work.c:245
 exit_task_work include/linux/task_work.h:43 [inline]
 do_exit+0x986/0x2530 kernel/exit.c:890
 do_group_exit+0x22d/0x2f0 kernel/exit.c:1032
 get_signal+0x12a6/0x1390 kernel/signal.c:2911
 arch_do_signal_or_restart+0xc2/0x7b0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
 irqentry_exit_to_user_mode+0x9/0x30 kernel/entry/common.c:315
 exc_page_fault+0x8c/0x100 arch/x86/mm/fault.c:1519
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:608
RIP: 0033:0x7ff1a4d9e0e1
Code: Unable to access opcode bytes at 0x7ff1a4d9e0b7.
RSP: 002b:fffffffffffffe70 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007ff1a5026090 RCX: 00007ff1a4d9e0d9
RDX: 0000000000000000 RSI: fffffffffffffe70 RDI: 0000000000008000
RBP: 00007ff1a4e35024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007ff1a5026128 R14: 00007ff1a5026090 R15: 00007ffe392fd748
 </TASK>
----------------
Code disassembly (best guess):
   0:	03 48 b9             	add    -0x47(%rax),%ecx
   3:	00 00                	add    %al,(%rax)
   5:	00 00                	add    %al,(%rax)
   7:	00 fc                	add    %bh,%ah
   9:	ff                   	lcall  (bad)
   a:	df 80 3c 08 00 74    	filds  0x7400083c(%rax)
  10:	08 4c 89 ff          	or     %cl,-0x1(%rcx,%rcx,4)
  14:	e8 59 4f 24 00       	call   0x244f72
  19:	4d 39 37             	cmp    %r14,(%r15)
  1c:	74 0c                	je     0x2a
  1e:	e8 df cc cb ff       	call   0xffcbcd02
  23:	b8 fb ff ff ff       	mov    $0xfffffffb,%eax
  28:	eb 17                	jmp    0x41
* 2a:	e8 d3 cc cb ff       	call   0xffcbcd02 <-- trapping instruction
  2f:	48 89 df             	mov    %rbx,%rdi
  32:	e8 1b 00 00 00       	call   0x52
  37:	48 89 df             	mov    %rbx,%rdi
  3a:	e8 03 ae f9 ff       	call   0xfff9ae42
  3f:	31                   	.byte 0x31