------------[ cut here ]------------
WARNING: CPU: 0 PID: 29924 at net/mac80211/tx.c:5031 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5031 [inline]
WARNING: CPU: 0 PID: 29924 at net/mac80211/tx.c:5031 __ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5442
Modules linked in:
CPU: 0 PID: 29924 Comm: syz.6.5668 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5031 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5442
Code: 24 4c 89 e7 e8 8e 80 c0 f7 45 31 f6 4c 8b bc 24 a0 00 00 00 e9 7a fe ff ff e8 79 be 82 f7 0f 0b e9 f6 f7 ff ff e8 6d be 82 f7 <0f> 0b e9 48 fb ff ff e8 61 be 82 f7 48 c7 c7 00 85 64 8e 4c 89 e6
RSP: 0018:ffffc90000007a18 EFLAGS: 00010246
RAX: ffffffff8a046393 RBX: ffffffff8a045196 RCX: ffff88802d7dda00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff88802d7dda00 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff8880651263c0
R13: dffffc0000000000 R14: ffff8880651268b0 R15: ffff888068a47424
FS:  00007febb4f046c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007febaadf6000 CR3: 000000005fb45000 CR4: 00000000003506f0
Call Trace:
 <IRQ>
 ieee80211_beacon_get_tim+0xbf/0x580 net/mac80211/tx.c:5569
 ieee80211_beacon_get include/net/mac80211.h:5440 [inline]
 mac80211_hwsim_beacon_tx+0x3c7/0x780 drivers/net/wireless/virtual/mac80211_hwsim.c:2265
 __iterate_interfaces+0x243/0x500 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:1750 [inline]
 __hrtimer_run_queues+0x520/0xc40 kernel/time/hrtimer.c:1814
 hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1831
 handle_softirqs+0x280/0x820 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:filter_irq_stacks+0x3c/0x90 kernel/stacktrace.c:395
Code: 89 fe 41 89 f4 31 db 49 bd 00 00 00 00 00 fc ff df 49 89 ff 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 84 8b 69 00 <49> 8b 04 de 48 3d e0 01 a0 8a 0f 93 c1 48 3d f0 15 a0 8a 0f 92 c2
RSP: 0018:ffffc900049bf118 EFLAGS: 00000246
RAX: 1ffff92000937e42 RBX: 0000000000000006 RCX: 0000000000000001
RDX: 0000000000140c01 RSI: 000000000000000f RDI: ffffc900049bf1e0
RBP: 0000000000140cca R08: ffffffff8e8b14ef R09: 1ffffffff1d1629d
R10: dffffc0000000000 R11: fffffbfff1d1629e R12: 000000000000000f
R13: dffffc0000000000 R14: ffffc900049bf1e0 R15: ffffc900049bf210
 __stack_depot_save+0x1f/0x630 lib/stackdepot.c:377
 save_stack+0x133/0x230 mm/page_owner.c:129
 __set_page_owner+0x1d/0x60 mm/page_owner.c:192
 set_page_owner include/linux/page_owner.h:31 [inline]
 post_alloc_hook+0x1c1/0x200 mm/page_alloc.c:1581
 prep_new_page mm/page_alloc.c:1588 [inline]
 get_page_from_freelist+0x1951/0x19e0 mm/page_alloc.c:3220
 __alloc_pages+0x1f0/0x460 mm/page_alloc.c:4500
 __folio_alloc+0x10/0x20 mm/page_alloc.c:4532
 vma_alloc_folio+0x47a/0x8f0 mm/mempolicy.c:2240
 shmem_alloc_folio+0x1a9/0x2a0 mm/shmem.c:1679
 shmem_alloc_and_acct_folio+0x1e6/0x6d0 mm/shmem.c:1704
 shmem_get_folio_gfp+0xcde/0x2aa0 mm/shmem.c:2041
 shmem_get_folio mm/shmem.c:2164 [inline]
 shmem_write_begin+0xf2/0x420 mm/shmem.c:2706
 generic_perform_write+0x2fe/0x5c0 mm/filemap.c:4031
 shmem_file_write_iter+0xfb/0x120 mm/shmem.c:2883
 call_write_iter include/linux/fs.h:2018 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x46c/0x990 fs/read_write.c:584
 ksys_write+0x150/0x260 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7febb3f5d04e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007febb4f03da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007febb4f046c0 RCX: 00007febb3f5d04e
RDX: 0000000001000000 RSI: 00007feba9df7000 RDI: 0000000000000004
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
R13: 00007febb4f03ee0 R14: 00007febb4f03ea0 R15: 00007feba9df7000
 </TASK>
----------------
Code disassembly (best guess):
   0:	89 fe                	mov    %edi,%esi
   2:	41 89 f4             	mov    %esi,%r12d
   5:	31 db                	xor    %ebx,%ebx
   7:	49 bd 00 00 00 00 00 	movabs $0xdffffc0000000000,%r13
   e:	fc ff df
  11:	49 89 ff             	mov    %rdi,%r15
  14:	4c 89 f8             	mov    %r15,%rax
  17:	48 c1 e8 03          	shr    $0x3,%rax
  1b:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
  20:	74 08                	je     0x2a
  22:	4c 89 ff             	mov    %r15,%rdi
  25:	e8 84 8b 69 00       	call   0x698bae
* 2a:	49 8b 04 de          	mov    (%r14,%rbx,8),%rax <-- trapping instruction
  2e:	48 3d e0 01 a0 8a    	cmp    $0xffffffff8aa001e0,%rax
  34:	0f 93 c1             	setae  %cl
  37:	48 3d f0 15 a0 8a    	cmp    $0xffffffff8aa015f0,%rax
  3d:	0f 92 c2             	setb   %dl