------------[ cut here ]------------
WARNING: CPU: 1 PID: 6396 at net/mac80211/tx.c:5031 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5031 [inline]
WARNING: CPU: 1 PID: 6396 at net/mac80211/tx.c:5031 __ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5442
Modules linked in:
CPU: 1 PID: 6396 Comm: syz.3.92 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
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 0e 25 db f7 45 31 f6 4c 8b bc 24 a0 00 00 00 e9 7a fe ff ff e8 59 f6 9d f7 0f 0b e9 f6 f7 ff ff e8 4d f6 9d f7 <0f> 0b e9 48 fb ff ff e8 41 f6 9d f7 48 c7 c7 e0 96 23 8e 4c 89 e6
RSP: 0018:ffffc900001f0a18 EFLAGS: 00010246
RAX: ffffffff89e79a73 RBX: ffffffff89e78876 RCX: ffff88807ba15a00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff88807ba15a00 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff88805e3ca3c0
R13: dffffc0000000000 R14: ffff88805e3ca8b0 R15: ffff8880300d9824
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000002e6bb000 CR4: 00000000003526e0
Call Trace:
 <IRQ>
 ieee80211_beacon_get_tim+0xb8/0x560 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+0x51e/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+0xc7/0x190 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:__sanitizer_cov_trace_switch+0x1e/0x120 kernel/kcov.c:333
Code: 48 89 74 0a 18 48 89 44 0a 20 c3 90 f3 0f 1e fa 48 8b 06 48 8b 4e 08 48 83 c1 f8 48 c1 c1 3d 48 83 f9 02 7f 1e 48 85 c9 74 3c <48> 83 f9 01 0f 85 ee 00 00 00 b9 03 00 00 00 48 85 c0 75 36 e9 df
RSP: 0018:ffffc900042f72f0 EFLAGS: 00000202
RAX: 0000000000000003 RBX: ffffffff8ed893f2 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8cb9e7e0 RDI: 0000000000000001
RBP: ffffc900042f7418 R08: ffffc900042f7427 R09: 0000000000000000
R10: ffffc900042f7418 R11: fffff5200085ee85 R12: ffffc900042f73c8
R13: dffffc0000000000 R14: 0000000000000001 R15: ffffffff8ed893f6
 unwind_next_frame+0x16d9/0x2970 arch/x86/kernel/unwind_orc.c:641
 arch_stack_walk+0x144/0x190 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4e/0x70 mm/kasan/common.c:52
 kasan_save_free_info+0x2e/0x50 mm/kasan/generic.c:522
 ____kasan_slab_free+0x126/0x1e0 mm/kasan/common.c:236
 kasan_slab_free include/linux/kasan.h:164 [inline]
 slab_free_hook mm/slub.c:1811 [inline]
 slab_free_freelist_hook+0x130/0x1b0 mm/slub.c:1837
 slab_free mm/slub.c:3830 [inline]
 kmem_cache_free+0xf8/0x280 mm/slub.c:3852
 remove_vma mm/mmap.c:146 [inline]
 exit_mmap+0x5e5/0xb50 mm/mmap.c:3326
 __mmput+0x118/0x3c0 kernel/fork.c:1355
 exit_mm+0x1da/0x2c0 kernel/exit.c:569
 do_exit+0x88e/0x23c0 kernel/exit.c:870
 do_group_exit+0x21b/0x2d0 kernel/exit.c:1024
 get_signal+0x12fc/0x1400 kernel/signal.c:2902
 arch_do_signal_or_restart+0x9c/0x7b0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0xf6/0x180 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
 syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
 do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f0de298f749
Code: Unable to access opcode bytes at 0x7f0de298f71f.
RSP: 002b:00007f0de38ec0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f0de2be6098 RCX: 00007f0de298f749
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f0de2be6098
RBP: 00007f0de2be6090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0de2be6128 R14: 00007fff5bef3de0 R15: 00007fff5bef3ec8
 </TASK>
----------------
Code disassembly (best guess):
   0:	48 89 74 0a 18       	mov    %rsi,0x18(%rdx,%rcx,1)
   5:	48 89 44 0a 20       	mov    %rax,0x20(%rdx,%rcx,1)
   a:	c3                   	ret
   b:	90                   	nop
   c:	f3 0f 1e fa          	endbr64
  10:	48 8b 06             	mov    (%rsi),%rax
  13:	48 8b 4e 08          	mov    0x8(%rsi),%rcx
  17:	48 83 c1 f8          	add    $0xfffffffffffffff8,%rcx
  1b:	48 c1 c1 3d          	rol    $0x3d,%rcx
  1f:	48 83 f9 02          	cmp    $0x2,%rcx
  23:	7f 1e                	jg     0x43
  25:	48 85 c9             	test   %rcx,%rcx
  28:	74 3c                	je     0x66
* 2a:	48 83 f9 01          	cmp    $0x1,%rcx <-- trapping instruction
  2e:	0f 85 ee 00 00 00    	jne    0x122
  34:	b9 03 00 00 00       	mov    $0x3,%ecx
  39:	48 85 c0             	test   %rax,%rax
  3c:	75 36                	jne    0x74
  3e:	e9                   	.byte 0xe9
  3f:	df                   	.byte 0xdf