------------[ cut here ]------------
WARNING: CPU: 1 PID: 6040 at net/mac80211/tx.c:4859 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
WARNING: CPU: 1 PID: 6040 at net/mac80211/tx.c:4859 __ieee80211_beacon_get+0x172c/0x1f80 net/mac80211/tx.c:5083
Modules linked in:
CPU: 1 PID: 6040 Comm: syz.0.363 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
RIP: 0010:__ieee80211_beacon_get+0x172c/0x1f80 net/mac80211/tx.c:5083
Code: f8 0f 0b e9 f1 fa ff ff e8 01 51 3a f8 0f 0b 4c 8b 74 24 08 e9 36 fe ff ff e8 f0 50 3a f8 0f 0b e9 3c ef ff ff e8 e4 50 3a f8 <0f> 0b e9 b8 f2 ff ff e8 98 f2 6b 00 44 89 e1 80 e1 07 80 c1 03 38
RSP: 0018:ffffc90000dd08c0 EFLAGS: 00010246
RAX: ffffffff893d7b2c RBX: ffff88805fa58c80 RCX: ffff888020d4bb80
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000dd0ae8 R08: ffff888020d4bb80 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff888062cefc00
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff920001ba128
FS:  0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3241cff8 CR3: 000000006330c000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 ieee80211_beacon_get_tim+0x48/0x840 net/mac80211/tx.c:5202
 ieee80211_beacon_get include/net/mac80211.h:4983 [inline]
 mac80211_hwsim_beacon_tx+0xf4/0x920 drivers/net/wireless/mac80211_hwsim.c:1812
 __iterate_interfaces+0x243/0x500 net/mac80211/util.c:793
 ieee80211_iterate_active_interfaces_atomic+0xb3/0x140 net/mac80211/util.c:829
 mac80211_hwsim_beacon+0x9b/0x180 drivers/net/wireless/mac80211_hwsim.c:1865
 __run_hrtimer kernel/time/hrtimer.c:1685 [inline]
 __hrtimer_run_queues+0x53d/0xc40 kernel/time/hrtimer.c:1749
 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766
 handle_softirqs+0x328/0x820 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:page_remove_rmap+0x90/0x10f0 mm/rmap.c:1353
Code: ac c7 ff 4d 89 ef 49 83 c7 18 4c 89 f8 48 c1 e8 03 42 80 3c 30 00 74 08 4c 89 ff e8 ea 14 0c 00 49 8b 1f 89 de 83 e6 01 31 ff <e8> 9b b0 c7 ff f6 c3 01 4c 89 2c 24 4c 89 64 24 18 0f 85 4e 01 00
RSP: 0018:ffffc900030b7508 EFLAGS: 00000246
RAX: 1ffffd40003250db RBX: 0000000000000000 RCX: ffff888020d4bb80
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffff940003250d9
R10: fffff940003250d9 R11: 1ffffd40003250d8 R12: ffffea00019286c8
R13: ffffea00019286c0 R14: dffffc0000000000 R15: ffffea00019286d8
 zap_pte_range mm/memory.c:1384 [inline]
 zap_pmd_range mm/memory.c:1505 [inline]
 zap_pud_range mm/memory.c:1534 [inline]
 zap_p4d_range mm/memory.c:1555 [inline]
 unmap_page_range+0xfbc/0x2520 mm/memory.c:1576
 unmap_vmas+0x11b/0x230 mm/memory.c:1653
 exit_mmap+0x38f/0x5f0 mm/mmap.c:3216
 __mmput+0x115/0x3b0 kernel/fork.c:1127
 exit_mm+0x567/0x6c0 kernel/exit.c:550
 do_exit+0x5a1/0x20a0 kernel/exit.c:870
 do_group_exit+0x12e/0x300 kernel/exit.c:997
 get_signal+0x6ca/0x12c0 kernel/signal.c:2900
 arch_do_signal_or_restart+0xc1/0x1300 arch/x86/kernel/signal.c:867
 handle_signal_work kernel/entry/common.c:154 [inline]
 exit_to_user_mode_loop+0x9e/0x130 kernel/entry/common.c:178
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fbc759acf85
Code: Unable to access opcode bytes at RIP 0x7fbc759acf5b.
RSP: 002b:00007fbc73bdef00 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 0000000000000003 RCX: 00007fbc759acf85
RDX: 00007fbc73bdef40 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fbc73bdffe0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000800000000 R14: 0000000000000000 R15: 00007fbc75a0852a
 </TASK>
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	ff 4d 89             	decl   -0x77(%rbp)
   3:	ef                   	out    %eax,(%dx)
   4:	49 83 c7 18          	add    $0x18,%r15
   8:	4c 89 f8             	mov    %r15,%rax
   b:	48 c1 e8 03          	shr    $0x3,%rax
   f:	42 80 3c 30 00       	cmpb   $0x0,(%rax,%r14,1)
  14:	74 08                	je     0x1e
  16:	4c 89 ff             	mov    %r15,%rdi
  19:	e8 ea 14 0c 00       	call   0xc1508
  1e:	49 8b 1f             	mov    (%r15),%rbx
  21:	89 de                	mov    %ebx,%esi
  23:	83 e6 01             	and    $0x1,%esi
  26:	31 ff                	xor    %edi,%edi
* 28:	e8 9b b0 c7 ff       	call   0xffc7b0c8 <-- trapping instruction
  2d:	f6 c3 01             	test   $0x1,%bl
  30:	4c 89 2c 24          	mov    %r13,(%rsp)
  34:	4c 89 64 24 18       	mov    %r12,0x18(%rsp)
  39:	0f                   	.byte 0xf
  3a:	85 4e 01             	test   %ecx,0x1(%rsi)