------------[ cut here ]------------
WARNING: CPU: 1 PID: 4186 at net/mac80211/tx.c:4876 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4876 [inline]
WARNING: CPU: 1 PID: 4186 at net/mac80211/tx.c:4876 __ieee80211_beacon_get+0x178a/0x1ff0 net/mac80211/tx.c:5100
Modules linked in:
CPU: 1 PID: 4186 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4876 [inline]
RIP: 0010:__ieee80211_beacon_get+0x178a/0x1ff0 net/mac80211/tx.c:5100
Code: 26 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 12 56 26 f8 0f 0b e9 16 ef ff ff e8 06 56 26 f8 <0f> 0b e9 7c f2 ff ff e8 7a 9a 6d 00 89 d9 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc90000dd08c0 EFLAGS: 00010246
RAX: ffffffff8952b99a RBX: ffff88801b1ba600 RCX: ffff8880746e1dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000dd0af8 R08: ffff8880746e1dc0 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: f8f8f8f8f8f8f8f8
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff920001ba128
FS:  000055555bac4500(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32423ffc CR3: 0000000061d9a000 CR4: 00000000003526e0
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:5219
 ieee80211_beacon_get include/net/mac80211.h:4983 [inline]
 mac80211_hwsim_beacon_tx+0x104/0x900 drivers/net/wireless/mac80211_hwsim.c:1812
 __iterate_interfaces+0x225/0x4c0 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+0x4ea/0xb60 kernel/time/hrtimer.c:1749
 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766
 handle_softirqs+0x336/0x830 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:copy_present_pte mm/memory.c:983 [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+0x18d0/0x32c0 mm/memory.c:1301
Code: 00 f0 80 23 fd 49 83 e6 fd 4d 89 f5 eb 08 4d 89 f5 e8 b4 c1 cb ff 49 bf 00 00 00 00 00 fc ff df 31 db 48 8b b4 24 b8 00 00 00 <48> 83 e6 08 41 0f 94 c6 31 ff e8 71 c5 cb ff 48 8b 4c 24 40 48 89
RSP: 0018:ffffc90002edf6c0 EFLAGS: 00000246
RAX: ffffffff81ad4dec RBX: 0000000000000000 RCX: ffff8880746e1dc0
RDX: 0000000000000000 RSI: 00000000180400fb RDI: 0000000000000000
RBP: ffffc90002edf970 R08: ffffea00018ab7c7 R09: 1ffffd40003156f8
R10: dffffc0000000000 R11: fffff940003156f9 R12: 0000000000000082
R13: 8000000062adf007 R14: 8000000062adf007 R15: dffffc0000000000
 dup_mmap kernel/fork.c:616 [inline]
 dup_mm kernel/fork.c:1472 [inline]
 copy_mm+0xc61/0x13d0 kernel/fork.c:1524
 copy_process+0x17a7/0x3e70 kernel/fork.c:2292
 kernel_clone+0x23f/0x990 kernel/fork.c:2682
 __do_sys_clone kernel/fork.c:2799 [inline]
 __se_sys_clone kernel/fork.c:2783 [inline]
 __x64_sys_clone+0x19a/0x210 kernel/fork.c:2783
 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: 0033:0x7fabbe12bbd2
Code: 89 e7 e8 71 8b f7 ff 45 31 c0 31 d2 31 f6 64 48 8b 04 25 10 00 00 00 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 66 89 c5 85 c0 75 3b 64 48 8b 04 25 10 00 00
RSP: 002b:00007ffce56e4340 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007ffce56e4340 RCX: 00007fabbe12bbd2
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007ffce56e44cc R08: 0000000000000000 R09: 0000000000000001
R10: 000055555bac47d0 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000000927c0 R14: 0000000000018acf R15: 00007ffce56e4520
 </TASK>
----------------
Code disassembly (best guess):
   0:	00 f0                	add    %dh,%al
   2:	80 23 fd             	andb   $0xfd,(%rbx)
   5:	49 83 e6 fd          	and    $0xfffffffffffffffd,%r14
   9:	4d 89 f5             	mov    %r14,%r13
   c:	eb 08                	jmp    0x16
   e:	4d 89 f5             	mov    %r14,%r13
  11:	e8 b4 c1 cb ff       	call   0xffcbc1ca
  16:	49 bf 00 00 00 00 00 	movabs $0xdffffc0000000000,%r15
  1d:	fc ff df
  20:	31 db                	xor    %ebx,%ebx
  22:	48 8b b4 24 b8 00 00 	mov    0xb8(%rsp),%rsi
  29:	00
* 2a:	48 83 e6 08          	and    $0x8,%rsi <-- trapping instruction
  2e:	41 0f 94 c6          	sete   %r14b
  32:	31 ff                	xor    %edi,%edi
  34:	e8 71 c5 cb ff       	call   0xffcbc5aa
  39:	48 8b 4c 24 40       	mov    0x40(%rsp),%rcx
  3e:	48                   	rex.W
  3f:	89                   	.byte 0x89