------------[ cut here ]------------
WARNING: CPU: 1 PID: 4574 at net/mac80211/tx.c:4944 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4944 [inline]
WARNING: CPU: 1 PID: 4574 at net/mac80211/tx.c:4944 __ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5345
Modules linked in:
CPU: 1 PID: 4574 Comm: syz.1.105 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4944 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5345
Code: 24 4c 89 e7 e8 9e d3 0a f8 45 31 f6 4c 8b bc 24 a0 00 00 00 e9 7a fe ff ff e8 39 3d d2 f7 0f 0b e9 f6 f7 ff ff e8 2d 3d d2 f7 <0f> 0b e9 48 fb ff ff e8 21 3d d2 f7 48 c7 c7 50 d6 fa 8d 4c 89 e6
RSP: 0018:ffffc900001e0a30 EFLAGS: 00010246
RAX: ffffffff89b03583 RBX: ffffffff89b02386 RCX: ffff88802d3c8000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff88802d3c8000 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff88807b9de228
R13: dffffc0000000000 R14: ffff88807b9de760 R15: ffff88807d80e824
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa136a720c0 CR3: 000000000c88e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 ieee80211_beacon_get_tim+0x63/0x4e0 net/mac80211/tx.c:5472
 ieee80211_beacon_get include/net/mac80211.h:5335 [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:1747 [inline]
 __hrtimer_run_queues+0x54a/0xd50 kernel/time/hrtimer.c:1811
 hrtimer_run_softirq+0x183/0x2a0 kernel/time/hrtimer.c:1828
 handle_softirqs+0x2a1/0x930 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 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:release_pages+0x14e/0x2220 mm/swap.c:977
Code: e8 03 48 89 44 24 68 45 31 e4 45 31 ed c7 44 24 3c 00 00 00 00 eb 29 e8 80 29 d1 ff 45 31 ff 4c 39 64 24 78 0f 84 fb 1d 00 00 <e8> 6d 29 d1 ff 49 83 c4 08 4d 89 fd 49 bf 00 00 00 00 00 fc ff df
RSP: 0018:ffffc900044478c0 EFLAGS: 00000206
RAX: ffffffff81b14ce4 RBX: ffffea00014aa200 RCX: ffff88802d3c8000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90004447a00 R08: ffffea00014aa277 R09: 1ffffd400029544e
R10: dffffc0000000000 R11: fffff9400029544f R12: 0000000000000e98
R13: 0000000000000000 R14: ffffea00014aa240 R15: 0000000000000000
 tlb_batch_pages_flush mm/mmu_gather.c:59 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:254 [inline]
 tlb_flush_mmu+0x105/0x220 mm/mmu_gather.c:261
 tlb_finish_mmu+0xbd/0x1c0 mm/mmu_gather.c:361
 exit_mmap+0x384/0x960 mm/mmap.c:3262
 __mmput+0x118/0x3c0 kernel/fork.c:1205
 exit_mm+0x1fe/0x2d0 kernel/exit.c:565
 do_exit+0x905/0x2480 kernel/exit.c:867
 do_group_exit+0x217/0x2d0 kernel/exit.c:1022
 __do_sys_exit_group kernel/exit.c:1033 [inline]
 __se_sys_exit_group kernel/exit.c:1031 [inline]
 __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1031
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fa136b9c799
Code: Unable to access opcode bytes at 0x7fa136b9c76f.
RSP: 002b:00007ffd458caba8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa136b9c799
RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffd458cac0c R08: 0000000000000000 R09: 00000000000927c0
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000013
R13: 00000000000927c0 R14: 000000000001ddcb R15: 00007ffd458cac60
 </TASK>
----------------
Code disassembly (best guess):
   0:	e8 03 48 89 44       	call   0x44894808
   5:	24 68                	and    $0x68,%al
   7:	45 31 e4             	xor    %r12d,%r12d
   a:	45 31 ed             	xor    %r13d,%r13d
   d:	c7 44 24 3c 00 00 00 	movl   $0x0,0x3c(%rsp)
  14:	00
  15:	eb 29                	jmp    0x40
  17:	e8 80 29 d1 ff       	call   0xffd1299c
  1c:	45 31 ff             	xor    %r15d,%r15d
  1f:	4c 39 64 24 78       	cmp    %r12,0x78(%rsp)
  24:	0f 84 fb 1d 00 00    	je     0x1e25
* 2a:	e8 6d 29 d1 ff       	call   0xffd1299c <-- trapping instruction
  2f:	49 83 c4 08          	add    $0x8,%r12
  33:	4d 89 fd             	mov    %r15,%r13
  36:	49 bf 00 00 00 00 00 	movabs $0xdffffc0000000000,%r15
  3d:	fc ff df