------------[ cut here ]------------
WARNING: CPU: 1 PID: 5780 at net/mac80211/tx.c:5033 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5033 [inline]
WARNING: CPU: 1 PID: 5780 at net/mac80211/tx.c:5033 __ieee80211_beacon_get+0x1141/0x1520 net/mac80211/tx.c:5444
Modules linked in:
CPU: 1 PID: 5780 Comm: syz-executor 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:5033 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1141/0x1520 net/mac80211/tx.c:5444
Code: f7 4c 89 ef e8 70 d3 ba f7 45 31 ed 4c 8b bc 24 a0 00 00 00 e9 7f fe ff ff e8 cb f1 7c f7 0f 0b e9 61 f8 ff ff e8 bf f1 7c f7 <0f> 0b e9 85 fb ff ff e8 b3 f1 7c f7 48 c7 c7 00 ae 65 8e 4c 89 e6
RSP: 0018:ffffc900001f0a18 EFLAGS: 00010246
RAX: ffffffff8a09f3b1 RBX: dffffc0000000000 RCX: ffff888079890000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff888079890000 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff88805ed42440
R13: ffff88805f296c24 R14: ffff88805ed42930 R15: ffff88805f296c00
FS:  0000555563c7c500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1d871556b8 CR3: 00000000627ca000 CR4: 00000000003506e0
Call Trace:
 <IRQ>
 ieee80211_beacon_get_tim+0xbf/0x580 net/mac80211/tx.c:5571
 ieee80211_beacon_get include/net/mac80211.h:5440 [inline]
 mac80211_hwsim_beacon_tx+0x3bd/0x770 drivers/net/wireless/virtual/mac80211_hwsim.c:2265
 __iterate_interfaces+0x225/0x4c0 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:1754 [inline]
 __hrtimer_run_queues+0x525/0xc10 kernel/time/hrtimer.c:1818
 hrtimer_run_softirq+0x177/0x290 kernel/time/hrtimer.c:1835
 handle_softirqs+0x27d/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:kasan_check_range+0x1b9/0x290 mm/kasan/generic.c:-1
Code: f4 49 01 dc 4d 01 f3 49 8d 5c 24 07 4d 85 e4 49 0f 49 dc 48 83 e3 f8 49 29 dc 74 0e 41 80 3b 00 75 6b 49 ff c3 49 ff cc 75 f2 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 45 84 ff 0f 85 91 00 00 00 41 f7
RSP: 0018:ffffc9000458f508 EFLAGS: 00000256
RAX: ffffffff81c93401 RBX: 0000000000000000 RCX: ffffffff81c934b8
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffea00018ce834
RBP: ffffc9000458f850 R08: ffffea00018ce837 R09: 1ffffd4000319d06
R10: dffffc0000000000 R11: fffff94000319d07 R12: 0000000000000001
R13: ffffea00018ce834 R14: fffff94000319d07 R15: 1ffffd4000319d06
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline]
 page_ref_count include/linux/page_ref.h:67 [inline]
 folio_ref_count include/linux/page_ref.h:89 [inline]
 folio_get include/linux/mm.h:1458 [inline]
 copy_present_pte mm/memory.c:-1 [inline]
 copy_pte_range mm/memory.c:1083 [inline]
 copy_pmd_range mm/memory.c:1168 [inline]
 copy_pud_range mm/memory.c:1205 [inline]
 copy_p4d_range mm/memory.c:1229 [inline]
 copy_page_range+0x1228/0x3700 mm/memory.c:1323
 dup_mmap kernel/fork.c:769 [inline]
 dup_mm kernel/fork.c:1694 [inline]
 copy_mm+0x1751/0x1e30 kernel/fork.c:1743
 copy_process+0x171d/0x3df0 kernel/fork.c:2508
 kernel_clone+0x24b/0x8a0 kernel/fork.c:2917
 __do_sys_clone kernel/fork.c:3060 [inline]
 __se_sys_clone kernel/fork.c:3044 [inline]
 __x64_sys_clone+0x1b7/0x230 kernel/fork.c:3044
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f1d863c68d2
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:00007ffdc22c6ec0 EFLAGS: 00000246
 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007ffdc22c6ec0 RCX: 00007f1d863c68d2
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007ffdc22c704c R08: 0000000000000000 R09: 0000000000000001
R10: 0000555563c7c7d0 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000000927c0 R14: 000000000009cf2c R15: 00007ffdc22c70a0
 </TASK>
----------------
Code disassembly (best guess):
   0:	f4                   	hlt
   1:	49 01 dc             	add    %rbx,%r12
   4:	4d 01 f3             	add    %r14,%r11
   7:	49 8d 5c 24 07       	lea    0x7(%r12),%rbx
   c:	4d 85 e4             	test   %r12,%r12
   f:	49 0f 49 dc          	cmovns %r12,%rbx
  13:	48 83 e3 f8          	and    $0xfffffffffffffff8,%rbx
  17:	49 29 dc             	sub    %rbx,%r12
  1a:	74 0e                	je     0x2a
  1c:	41 80 3b 00          	cmpb   $0x0,(%r11)
  20:	75 6b                	jne    0x8d
  22:	49 ff c3             	inc    %r11
  25:	49 ff cc             	dec    %r12
  28:	75 f2                	jne    0x1c
* 2a:	5b                   	pop    %rbx <-- trapping instruction
  2b:	41 5c                	pop    %r12
  2d:	41 5d                	pop    %r13
  2f:	41 5e                	pop    %r14
  31:	41 5f                	pop    %r15
  33:	5d                   	pop    %rbp
  34:	c3                   	ret
  35:	45 84 ff             	test   %r15b,%r15b
  38:	0f 85 91 00 00 00    	jne    0xcf
  3e:	41                   	rex.B
  3f:	f7                   	.byte 0xf7