------------[ cut here ]------------
WARNING: CPU: 1 PID: 9803 at net/mac80211/tx.c:4859 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
WARNING: CPU: 1 PID: 9803 at net/mac80211/tx.c:4859 __ieee80211_beacon_get+0x172c/0x1f80 net/mac80211/tx.c:5083
Modules linked in:
CPU: 1 PID: 9803 Comm: syz-executor 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 51 6c 3a f8 0f 0b 4c 8b 74 24 08 e9 36 fe ff ff e8 40 6c 3a f8 0f 0b e9 3c ef ff ff e8 34 6c 3a f8 <0f> 0b e9 b8 f2 ff ff e8 68 ef 6b 00 44 89 e1 80 e1 07 80 c1 03 38
RSP: 0018:ffffc90000dd08c0 EFLAGS: 00010246
RAX: ffffffff893d5e5c RBX: ffff88807e164c80 RCX: ffff88807a0d9dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000dd0ae8 R08: ffff88807a0d9dc0 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff888024fb9400
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff920001ba128
FS:  0000555583320500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa3b85d96c0 CR3: 000000007e86f000 CR4: 00000000003506e0
DR0: 000000000000004b DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 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:is_cow_mapping include/linux/mm.h:-1 [inline]
RIP: 0010:page_needs_cow_for_dma include/linux/mm.h:1356 [inline]
RIP: 0010:copy_present_page mm/memory.c:903 [inline]
RIP: 0010:copy_present_pte mm/memory.c:960 [inline]
RIP: 0010:copy_pte_range mm/memory.c:1081 [inline]
RIP: 0010:copy_pmd_range mm/memory.c:1167 [inline]
RIP: 0010:copy_pud_range mm/memory.c:1204 [inline]
RIP: 0010:copy_p4d_range mm/memory.c:1228 [inline]
RIP: 0010:copy_page_range+0x11e0/0x3220 mm/memory.c:1301
Code: 80 3c 38 00 74 08 48 89 df e8 cc b2 10 00 48 8b 1b 83 e3 28 bf 20 00 00 00 48 89 de e8 c9 4e cc ff 48 83 fb 20 4c 89 74 24 28 <4c> 89 ac 24 b8 00 00 00 0f 85 9b 00 00 00 48 8b 84 24 f0 00 00 00
RSP: 0018:ffffc900045776a0 EFLAGS: 00000202
RAX: ffffffff81ab7fa7 RBX: 0000000000000028 RCX: ffff88807a0d9dc0
RDX: 0000000000000000 RSI: 0000000000000028 RDI: 0000000000000020
RBP: ffffc90004577950 R08: dffffc0000000000 R09: ffffed100e4ad7a5
R10: ffffed100e4ad7a5 R11: 1ffff1100e4ad7a4 R12: 1ffff1100f416ecc
R13: 800000006099d007 R14: ffffea0001826740 R15: dffffc0000000000
 dup_mmap kernel/fork.c:615 [inline]
 dup_mm kernel/fork.c:1466 [inline]
 copy_mm+0xc60/0x1380 kernel/fork.c:1518
 copy_process+0x17c6/0x3e00 kernel/fork.c:2290
 kernel_clone+0x219/0x930 kernel/fork.c:2679
 __do_sys_clone kernel/fork.c:2796 [inline]
 __se_sys_clone kernel/fork.c:2780 [inline]
 __x64_sys_clone+0x170/0x1c0 kernel/fork.c:2780
 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: 0033:0x7fa3b7849713
Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
RSP: 002b:00007fffa4679c98 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa3b7849713
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: 00005555833207d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00000000000927c0 R14: 00000000000c87e5 R15: 00007fffa4679e30
 </TASK>
----------------
Code disassembly (best guess):
   0:	80 3c 38 00          	cmpb   $0x0,(%rax,%rdi,1)
   4:	74 08                	je     0xe
   6:	48 89 df             	mov    %rbx,%rdi
   9:	e8 cc b2 10 00       	call   0x10b2da
   e:	48 8b 1b             	mov    (%rbx),%rbx
  11:	83 e3 28             	and    $0x28,%ebx
  14:	bf 20 00 00 00       	mov    $0x20,%edi
  19:	48 89 de             	mov    %rbx,%rsi
  1c:	e8 c9 4e cc ff       	call   0xffcc4eea
  21:	48 83 fb 20          	cmp    $0x20,%rbx
  25:	4c 89 74 24 28       	mov    %r14,0x28(%rsp)
* 2a:	4c 89 ac 24 b8 00 00 	mov    %r13,0xb8(%rsp) <-- trapping instruction
  31:	00
  32:	0f 85 9b 00 00 00    	jne    0xd3
  38:	48 8b 84 24 f0 00 00 	mov    0xf0(%rsp),%rax
  3f:	00