------------[ cut here ]------------
WARNING: CPU: 1 PID: 5053 at net/mac80211/tx.c:4859 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
WARNING: CPU: 1 PID: 5053 at net/mac80211/tx.c:4859 __ieee80211_beacon_get+0x179f/0x2000 net/mac80211/tx.c:5083
Modules linked in:
CPU: 1 PID: 5053 Comm: syz.2.198 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
RIP: 0010:__ieee80211_beacon_get+0x179f/0x2000 net/mac80211/tx.c:5083
Code: 2a 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 6d 14 2a f8 0f 0b e9 03 ef ff ff e8 61 14 2a f8 <0f> 0b e9 76 f2 ff ff e8 65 a9 6d 00 89 d9 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc90000dd08e0 EFLAGS: 00010246
RAX: ffffffff894f202f RBX: ffff88805e9ee268 RCX: ffff888025d90000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000dd0b08 R08: ffff888025d90000 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff8880612a6e00
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff920001ba12c
FS:  00007f44f6c0f6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32d22ff8 CR3: 0000000073c30000 CR4: 00000000003506e0
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+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:stack_trace_consume_entry+0xef/0x270 kernel/stacktrace.c:93
Code: 8b 74 24 08 48 8b 1f 45 8d 79 01 0f b6 44 15 00 84 c0 0f 85 35 01 00 00 45 89 38 4e 8d 3c cb 4c 89 f8 48 c1 e8 03 80 3c 10 00 <74> 1a 4c 89 ff 48 89 f3 49 89 d4 4c 89 c5 e8 6e a5 56 00 49 89 e8
RSP: 0018:ffffc90002e1ec18 EFLAGS: 00000246
RAX: 1ffff920005c3dc3 RBX: ffffc90002e1ede0 RCX: 0000000080000001
RDX: dffffc0000000000 RSI: ffffffff81ae8855 RDI: ffffc90002e1ed20
RBP: 1ffff920005c3da6 R08: ffffc90002e1ed30 R09: 0000000000000007
R10: dffffc0000000000 R11: fffff520005c3d99 R12: 0000000000000000
R13: 1ffff920005c3da5 R14: ffffc90002e1ed28 R15: ffffc90002e1ee18
 arch_stack_walk+0x100/0x140 arch/x86/kernel/stacktrace.c:27
 stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122
 save_stack+0x121/0x230 mm/page_owner.c:119
 __set_page_owner+0x41/0x2d0 mm/page_owner.c:181
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x1bbd/0x1ca0 mm/page_alloc.c:4192
 __alloc_pages+0x1ee/0x480 mm/page_alloc.c:5501
 alloc_pages_vma+0x393/0x7c0 mm/mempolicy.c:2146
 shmem_alloc_page mm/shmem.c:1586 [inline]
 shmem_alloc_and_acct_page+0x47f/0xbe0 mm/shmem.c:1611
 shmem_getpage_gfp+0x14f4/0x2d40 mm/shmem.c:1906
 shmem_fault+0x1ac/0x540 mm/shmem.c:2118
 __do_fault+0x141/0x330 mm/memory.c:3928
 do_read_fault mm/memory.c:4264 [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+0x2985/0x4410 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: 0033:0x7f44f89b5dd9
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:00007f44f6c0f028 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f44f8c2efa0 RCX: 00007f44f89b5dd9
RDX: b635773f06ebbeee RSI: 0000000000b36000 RDI: 0000200000000000
RBP: 00007f44f8a4bd69 R08: ffffffffffffffff R09: 0000000000003000
R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f44f8c2f038 R14: 00007f44f8c2efa0 R15: 00007fffe95be228
 </TASK>
----------------
Code disassembly (best guess):
   0:	8b 74 24 08          	mov    0x8(%rsp),%esi
   4:	48 8b 1f             	mov    (%rdi),%rbx
   7:	45 8d 79 01          	lea    0x1(%r9),%r15d
   b:	0f b6 44 15 00       	movzbl 0x0(%rbp,%rdx,1),%eax
  10:	84 c0                	test   %al,%al
  12:	0f 85 35 01 00 00    	jne    0x14d
  18:	45 89 38             	mov    %r15d,(%r8)
  1b:	4e 8d 3c cb          	lea    (%rbx,%r9,8),%r15
  1f:	4c 89 f8             	mov    %r15,%rax
  22:	48 c1 e8 03          	shr    $0x3,%rax
  26:	80 3c 10 00          	cmpb   $0x0,(%rax,%rdx,1)
* 2a:	74 1a                	je     0x46 <-- trapping instruction
  2c:	4c 89 ff             	mov    %r15,%rdi
  2f:	48 89 f3             	mov    %rsi,%rbx
  32:	49 89 d4             	mov    %rdx,%r12
  35:	4c 89 c5             	mov    %r8,%rbp
  38:	e8 6e a5 56 00       	call   0x56a5ab
  3d:	49 89 e8             	mov    %rbp,%r8