------------[ cut here ]------------
WARNING: CPU: 0 PID: 18644 at net/mac80211/tx.c:4861 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4861 [inline]
WARNING: CPU: 0 PID: 18644 at net/mac80211/tx.c:4861 __ieee80211_beacon_get+0x179f/0x2000 net/mac80211/tx.c:5085
Modules linked in:
CPU: 0 PID: 18644 Comm: syz.2.2768 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4861 [inline]
RIP: 0010:__ieee80211_beacon_get+0x179f/0x2000 net/mac80211/tx.c:5085
Code: 29 f8 0f 0b 4f 89 64 2f 04 4f 89 64 2f 0c 43 c6 44 2f 14 f8 e9 19 fe ff ff e8 0d 87 29 f8 0f 0b e9 03 ef ff ff e8 01 87 29 f8 <0f> 0b e9 76 f2 ff ff e8 25 b8 6d 00 89 d9 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc900000078e0 EFLAGS: 00010246
RAX: ffffffff894fc1ef RBX: ffff8880695d6268 RCX: ffff88802acf9dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007b08 R08: ffff88802acf9dc0 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff888078b93400
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff92000000f2c
FS:  00007f09f6a3d6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c30db8c CR3: 0000000064173000 CR4: 00000000003506f0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000002
DR3: ffffffffefffff15 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 ieee80211_beacon_get_tim+0x48/0x840 net/mac80211/tx.c:5204
 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+0x4f2/0xb70 kernel/time/hrtimer.c:1749
 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766
 handle_softirqs+0x339/0x830 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x13b/0x230 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:unlock_page+0x183/0x1f0 mm/filemap.c:1514
Code: 40 84 ed 74 19 e8 ad a2 da ff 48 89 df 31 f6 5b 41 5c 41 5d 41 5e 41 5f 5d e9 79 00 00 00 e8 94 a2 da ff 5b 41 5c 41 5d 41 5e <41> 5f 5d c3 e8 84 a2 da ff 49 ff ce 4c 89 f3 e9 be fe ff ff e8 74
RSP: 0018:ffffc9000322f748 EFLAGS: 00000246
RAX: ffffffff819ea65c RBX: ffffea0001786a80 RCX: 0000000000080000
RDX: ffffc9000be49000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc9000322f800 R08: ffffea0001786a87 R09: 1ffffd40002f0d50
R10: dffffc0000000000 R11: fffff940002f0d51 R12: ffff8880688ce438
R13: ffffc9000322f9f0 R14: ffffea0001786a80 R15: 00fff00000080007
 filemap_map_pages+0xd6a/0x13b0 mm/filemap.c:3350
 do_fault_around mm/memory.c:4243 [inline]
 do_read_fault mm/memory.c:4258 [inline]
 do_fault mm/memory.c:4392 [inline]
 handle_pte_fault mm/memory.c:4650 [inline]
 __handle_mm_fault mm/memory.c:4785 [inline]
 handle_mm_fault+0x25bc/0x4410 mm/memory.c:4883
 faultin_page mm/gup.c:976 [inline]
 __get_user_pages+0x94b/0x11e0 mm/gup.c:1197
 populate_vma_page_range+0x213/0x290 mm/gup.c:1529
 __mm_populate+0x275/0x3b0 mm/gup.c:1638
 mm_populate include/linux/mm.h:2646 [inline]
 vm_mmap_pgoff+0x212/0x2d0 mm/util.c:556
 ksys_mmap_pgoff+0x140/0x790 mm/mmap.c:1635
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f09f87e3e59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 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:00007f09f6a3d028 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f09f8a5cfa0 RCX: 00007f09f87e3e59
RDX: b635773f06ebbeee RSI: 0000000000b36000 RDI: 0000200000000000
RBP: 00007f09f8879d6f R08: ffffffffffffffff R09: 000000006a72c000
R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f09f8a5d038 R14: 00007f09f8a5cfa0 R15: 00007ffec835bd88
 </TASK>
----------------
Code disassembly (best guess):
   0:	40 84 ed             	test   %bpl,%bpl
   3:	74 19                	je     0x1e
   5:	e8 ad a2 da ff       	call   0xffdaa2b7
   a:	48 89 df             	mov    %rbx,%rdi
   d:	31 f6                	xor    %esi,%esi
   f:	5b                   	pop    %rbx
  10:	41 5c                	pop    %r12
  12:	41 5d                	pop    %r13
  14:	41 5e                	pop    %r14
  16:	41 5f                	pop    %r15
  18:	5d                   	pop    %rbp
  19:	e9 79 00 00 00       	jmp    0x97
  1e:	e8 94 a2 da ff       	call   0xffdaa2b7
  23:	5b                   	pop    %rbx
  24:	41 5c                	pop    %r12
  26:	41 5d                	pop    %r13
  28:	41 5e                	pop    %r14
* 2a:	41 5f                	pop    %r15 <-- trapping instruction
  2c:	5d                   	pop    %rbp
  2d:	c3                   	ret
  2e:	e8 84 a2 da ff       	call   0xffdaa2b7
  33:	49 ff ce             	dec    %r14
  36:	4c 89 f3             	mov    %r14,%rbx
  39:	e9 be fe ff ff       	jmp    0xfffffefc
  3e:	e8                   	.byte 0xe8
  3f:	74                   	.byte 0x74