------------[ cut here ]------------
WARNING: CPU: 0 PID: 6764 at net/mac80211/tx.c:4944 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4944 [inline]
WARNING: CPU: 0 PID: 6764 at net/mac80211/tx.c:4944 __ieee80211_beacon_get+0x1952/0x1f50 net/mac80211/tx.c:5265
Modules linked in:
CPU: 0 PID: 6764 Comm: syz.2.938 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:4944 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1952/0x1f50 net/mac80211/tx.c:5265
Code: ff ff ff e8 40 d3 e3 f7 0f 0b 48 8b 7c 24 20 e8 04 90 7f fe e9 dd e9 ff ff e8 2a d3 e3 f7 0f 0b e9 f1 ee ff ff e8 1e d3 e3 f7 <0f> 0b e9 61 f2 ff ff e8 12 d3 e3 f7 48 c7 c7 f0 73 fa 8d 4c 89 f6
RSP: 0018:ffffc900000078a0 EFLAGS: 00010246
RAX: ffffffff899d0342 RBX: 0000000000000000 RCX: ffff88802ffb9dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007aa8 R08: ffff88802ffb9dc0 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: 1ffff92000000f2c
R13: dffffc0000000000 R14: ffff88807e466258 R15: ffff888141268000
FS:  00007f8ec484e6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055557ee394a8 CR3: 000000005a736000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 ieee80211_beacon_get_tim+0x5b/0x4d0 net/mac80211/tx.c:5352
 ieee80211_beacon_get include/net/mac80211.h:5264 [inline]
 mac80211_hwsim_beacon_tx+0x21c/0xae0 drivers/net/wireless/mac80211_hwsim.c:2091
 __iterate_interfaces+0x243/0x500 net/mac80211/util.c:788
 ieee80211_iterate_active_interfaces_atomic+0xd7/0x170 net/mac80211/util.c:824
 mac80211_hwsim_beacon+0xb7/0x1b0 drivers/net/wireless/mac80211_hwsim.c:2147
 __run_hrtimer kernel/time/hrtimer.c:1747 [inline]
 __hrtimer_run_queues+0x554/0xd60 kernel/time/hrtimer.c:1811
 hrtimer_run_softirq+0x183/0x2a0 kernel/time/hrtimer.c:1828
 handle_softirqs+0x2a1/0x920 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:try_charge_memcg+0x45e/0x17f0 mm/memcontrol.c:2645
Code: b6 04 0f 49 89 cf 84 c0 0f 85 43 0c 00 00 45 89 26 41 b4 01 e9 df fe ff ff e8 6e 88 3f 08 f7 c3 00 02 00 00 74 c4 fb 45 84 e4 <0f> 85 64 10 00 00 e9 1e 0d 00 00 44 89 f3 48 8b bc 24 b0 00 00 00
RSP: 0018:ffffc900054267e0 EFLAGS: 00000202
RAX: d33f27702aa80d00 RBX: 0000000000000283 RCX: d33f27702aa80d00
RDX: dffffc0000000000 RSI: ffffffff8a8c0580 RDI: ffffffff8adef760
RBP: ffffc90005426a10 R08: dffffc0000000000 R09: fffffbfff215c45c
R10: fffffbfff215c45c R11: 1ffffffff215c45b R12: 0000000000000001
R13: ffff88807e932000 R14: 0000000000000040 R15: dffffc0000000000
 try_charge mm/memcontrol.c:2826 [inline]
 charge_memcg+0x113/0x380 mm/memcontrol.c:6923
 __mem_cgroup_charge+0x21/0x80 mm/memcontrol.c:6944
 mem_cgroup_charge include/linux/memcontrol.h:672 [inline]
 __filemap_add_folio+0xc9e/0x18d0 mm/filemap.c:854
 filemap_add_folio+0xaa/0x3c0 mm/filemap.c:962
 page_cache_ra_unbounded+0x19f/0x770 mm/readahead.c:251
 do_async_mmap_readahead mm/filemap.c:3164 [inline]
 filemap_fault+0x655/0x1670 mm/filemap.c:3218
 __do_fault+0x13b/0x4e0 mm/memory.c:4280
 do_read_fault mm/memory.c:4631 [inline]
 do_fault mm/memory.c:4760 [inline]
 handle_pte_fault mm/memory.c:5031 [inline]
 __handle_mm_fault mm/memory.c:5173 [inline]
 handle_mm_fault+0x28bf/0x3e60 mm/memory.c:5294
 faultin_page mm/gup.c:1026 [inline]
 __get_user_pages+0x3ff/0xeb0 mm/gup.c:1250
 __get_user_pages_locked mm/gup.c:1454 [inline]
 get_dump_page+0x188/0x670 mm/gup.c:1952
 dump_user_range+0x128/0x7f0 fs/coredump.c:975
 elf_core_dump+0x2f77/0x3490 fs/binfmt_elf.c:2354
 do_coredump+0x15ff/0x22b0 fs/coredump.c:824
 get_signal+0x10aa/0x1350 kernel/signal.c:2857
 arch_do_signal_or_restart+0xb7/0x1240 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
 irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:316
 exc_page_fault+0x88/0x100 arch/x86/mm/fault.c:1490
 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:608
RIP: 0033:0x7f8ec398f6d1
Code: 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f
RSP: 002b:fffffffffffffe70 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f8ec3be6090 RCX: 00007f8ec398f6c9
RDX: 0000000000000000 RSI: fffffffffffffe70 RDI: 0000000000008000
RBP: 00007f8ec3a11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f8ec3be6128 R14: 00007f8ec3be6090 R15: 00007fffac61bc98
 </TASK>
----------------
Code disassembly (best guess):
   0:	b6 04                	mov    $0x4,%dh
   2:	0f 49 89 cf 84 c0 0f 	cmovns 0xfc084cf(%rcx),%ecx
   9:	85 43 0c             	test   %eax,0xc(%rbx)
   c:	00 00                	add    %al,(%rax)
   e:	45 89 26             	mov    %r12d,(%r14)
  11:	41 b4 01             	mov    $0x1,%r12b
  14:	e9 df fe ff ff       	jmp    0xfffffef8
  19:	e8 6e 88 3f 08       	call   0x83f888c
  1e:	f7 c3 00 02 00 00    	test   $0x200,%ebx
  24:	74 c4                	je     0xffffffea
  26:	fb                   	sti
  27:	45 84 e4             	test   %r12b,%r12b
* 2a:	0f 85 64 10 00 00    	jne    0x1094 <-- trapping instruction
  30:	e9 1e 0d 00 00       	jmp    0xd53
  35:	44 89 f3             	mov    %r14d,%ebx
  38:	48 8b bc 24 b0 00 00 	mov    0xb0(%rsp),%rdi
  3f:	00