------------[ cut here ]------------
WARNING: CPU: 1 PID: 8609 at net/mac80211/tx.c:5031 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5031 [inline]
WARNING: CPU: 1 PID: 8609 at net/mac80211/tx.c:5031 __ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5442
Modules linked in:
CPU: 1 PID: 8609 Comm: syz.0.870 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:ffffc900001f0a18 EFLAGS: 00010246
RAX: ffffffff8a046393 RBX: ffffffff8a045196 RCX: ffff8880215c5a00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff8880215c5a00 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff88805da0e3c0
R13: dffffc0000000000 R14: ffff88805da0e8b0 R15: ffff88802fd45024
FS:  00007ff62541b6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff61e3f6000 CR3: 00000000788f2000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000003 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
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:__tlb_adjust_range include/asm-generic/tlb.h:374 [inline]
RIP: 0010:tlb_flush_pte_range include/asm-generic/tlb.h:585 [inline]
RIP: 0010:zap_pte_range mm/memory.c:1432 [inline]
RIP: 0010:zap_pmd_range mm/memory.c:1571 [inline]
RIP: 0010:zap_pud_range mm/memory.c:1600 [inline]
RIP: 0010:zap_p4d_range mm/memory.c:1621 [inline]
RIP: 0010:unmap_page_range+0xd5a/0x3000 mm/memory.c:1642
Code: 00 48 8b 44 24 28 48 89 18 e9 81 0d 00 00 e8 3d a5 bd ff 48 8b 7c 24 68 48 8b b4 24 98 00 00 00 e8 8b 1c 73 ff 48 8b 44 24 38 <48> 89 c3 48 c1 eb 03 42 80 3c 23 00 74 0f 48 8b 7c 24 38 e8 ae dc
RSP: 0018:ffffc9000b4df620 EFLAGS: 00000246
RAX: ffffc9000b4dfa10 RBX: 00007ff61b35a000 RCX: 0000000000080000
RDX: ffffc9000d4cc000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc9000b4df810 R08: ffffffff8e8b14ef R09: 1ffffffff1d1629d
R10: dffffc0000000000 R11: fffffbfff1d1629e R12: dffffc0000000000
R13: 00007ff61b35a000 R14: 0000000000000000 R15: ffff88805f21fad0
 unmap_vmas+0x286/0x3f0 mm/memory.c:1732
 unmap_region+0x220/0x370 mm/mmap.c:2344
 do_vmi_align_munmap+0x10dc/0x16d0 mm/mmap.c:2592
 do_vmi_munmap+0x252/0x2d0 mm/mmap.c:2660
 __vm_munmap+0x1a2/0x3c0 mm/mmap.c:2961
 __do_sys_munmap mm/mmap.c:2978 [inline]
 __se_sys_munmap mm/mmap.c:2975 [inline]
 __x64_sys_munmap+0x60/0x70 mm/mmap.c:2975
 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: 0033:0x7ff62459c647
Code: 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 0b 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff62541ae08 EFLAGS: 00000246 ORIG_RAX: 000000000000000b
RAX: ffffffffffffffda RBX: 0000000004000000 RCX: 00007ff62459c647
RDX: 0000000004000000 RSI: 0000000008400000 RDI: 00007ff61a3f7000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
R13: 00007ff62541aee0 R14: 00007ff62541aea0 R15: 00007ff61a3f7000
 </TASK>
----------------
Code disassembly (best guess):
   0:	00 48 8b             	add    %cl,-0x75(%rax)
   3:	44 24 28             	rex.R and $0x28,%al
   6:	48 89 18             	mov    %rbx,(%rax)
   9:	e9 81 0d 00 00       	jmp    0xd8f
   e:	e8 3d a5 bd ff       	call   0xffbda550
  13:	48 8b 7c 24 68       	mov    0x68(%rsp),%rdi
  18:	48 8b b4 24 98 00 00 	mov    0x98(%rsp),%rsi
  1f:	00
  20:	e8 8b 1c 73 ff       	call   0xff731cb0
  25:	48 8b 44 24 38       	mov    0x38(%rsp),%rax
* 2a:	48 89 c3             	mov    %rax,%rbx <-- trapping instruction
  2d:	48 c1 eb 03          	shr    $0x3,%rbx
  31:	42 80 3c 23 00       	cmpb   $0x0,(%rbx,%r12,1)
  36:	74 0f                	je     0x47
  38:	48 8b 7c 24 38       	mov    0x38(%rsp),%rdi
  3d:	e8                   	.byte 0xe8
  3e:	ae                   	scas   %es:(%rdi),%al
  3f:	dc                   	.byte 0xdc