------------[ cut here ]------------
WARNING: CPU: 0 PID: 4751 at net/mac80211/tx.c:4961 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4961 [inline]
WARNING: CPU: 0 PID: 4751 at net/mac80211/tx.c:4961 __ieee80211_beacon_get+0x1141/0x1520 net/mac80211/tx.c:5362
Modules linked in:
CPU: 0 PID: 4751 Comm: syz.1.133 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:4961 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1141/0x1520 net/mac80211/tx.c:5362
Code: f7 4c 89 ef e8 80 75 07 f8 45 31 ed 4c 8b bc 24 a0 00 00 00 e9 7f fe ff ff e8 db d0 ce f7 0f 0b e9 61 f8 ff ff e8 cf d0 ce f7 <0f> 0b e9 85 fb ff ff e8 c3 d0 ce f7 48 c7 c7 a0 fc fb 8d 4c 89 e6
RSP: 0018:ffffc90000007a48 EFLAGS: 00010246
RAX: ffffffff89b35d51 RBX: dffffc0000000000 RCX: ffff88802b895a00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff88802b895a00 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff8880552c2228
R13: ffff888078d1a424 R14: ffff8880552c2760 R15: ffff888078d1a400
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f19b30ecff8 CR3: 0000000059eb8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ieee80211_beacon_get_tim+0x63/0x4e0 net/mac80211/tx.c:5489
ieee80211_beacon_get include/net/mac80211.h:5335 [inline]
mac80211_hwsim_beacon_tx+0x21c/0xae0 drivers/net/wireless/mac80211_hwsim.c:2091
__iterate_interfaces+0x225/0x4c0 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:1751 [inline]
__hrtimer_run_queues+0x522/0xc90 kernel/time/hrtimer.c:1815
hrtimer_run_softirq+0x173/0x290 kernel/time/hrtimer.c:1832
handle_softirqs+0x291/0x910 kernel/softirq.c:596
__do_softirq kernel/softirq.c:630 [inline]
invoke_softirq kernel/softirq.c:470 [inline]
__irq_exit_rcu+0x13b/0x230 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
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:__is_kernel_text kernel/extable.c:95 [inline]
RIP: 0010:is_kernel_text include/linux/kallsyms.h:29 [inline]
RIP: 0010:core_kernel_text kernel/extable.c:68 [inline]
RIP: 0010:kernel_text_address+0x1/0xd0 kernel/extable.c:99
Code: 00 00 48 81 fb 00 50 69 8f 0f 93 c1 48 81 fb 9f a9 7e 8f 0f 92 c2 20 ca 08 c2 0f b6 c2 5b c3 66 2e 0f 1f 84 00 00 00 00 00 55 <41> 56 53 48 81 ff 00 00 00 81 0f 93 c0 48 81 ff 40 78 60 8a 0f 92
RSP: 0018:ffffc9000486ede8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff81dc0541 RCX: 0000000080000000
RDX: ffffc9000486ee01 RSI: dffffc0000000000 RDI: ffffffff81dc0541
RBP: ffffc9000486eeb0 R08: ffffc9000486f0a0 R09: ffffc9000486ee78
R10: dffffc0000000000 R11: fffff5200090ddd1 R12: ffff88802b895a00
R13: 1ffff11005712bee R14: dffffc0000000000 R15: 1ffff9200090ddce
__kernel_text_address+0x9/0x30 kernel/extable.c:79
unwind_get_return_address+0x49/0x80 arch/x86/kernel/unwind_orc.c:323
arch_stack_walk+0xf2/0x140 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122
save_stack+0x121/0x230 mm/page_owner.c:127
__reset_page_owner+0x51/0x190 mm/page_owner.c:148
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1487 [inline]
free_pcp_prepare mm/page_alloc.c:1537 [inline]
free_unref_page_prepare+0x8e5/0x9e0 mm/page_alloc.c:3414
free_unref_page_list+0xbb/0x8e0 mm/page_alloc.c:3555
release_pages+0x20d1/0x2340 mm/swap.c:1035
__pagevec_release+0x6d/0xe0 mm/swap.c:1055
pagevec_release include/linux/pagevec.h:71 [inline]
folio_batch_release include/linux/pagevec.h:135 [inline]
shmem_undo_range+0x808/0x21d0 mm/shmem.c:946
shmem_truncate_range mm/shmem.c:1062 [inline]
shmem_evict_inode+0x225/0x9f0 mm/shmem.c:1171
evict+0x4b6/0x8b0 fs/inode.c:705
__dentry_kill+0x412/0x630 fs/dcache.c:611
dentry_kill+0xb8/0x290 fs/dcache.c:-1
dput+0xfa/0x1d0 fs/dcache.c:918
__fput+0x597/0x8b0 fs/file_table.c:328
task_work_run+0x1d0/0x260 kernel/task_work.c:203
exit_task_work include/linux/task_work.h:39 [inline]
do_exit+0x9d5/0x2570 kernel/exit.c:887
do_group_exit+0x229/0x2e0 kernel/exit.c:1030
get_signal+0x1259/0x1340 kernel/signal.c:2880
arch_do_signal_or_restart+0xc4/0x1310 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
__syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:303
do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f032879e0d9
Code: Unable to access opcode bytes at 0x7f032879e0af.
RSP: 002b:00007f03296360e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f0328a26098 RCX: 00007f032879e0d9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f0328a26098
RBP: 00007f0328a26090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0328a26128 R14: 00007ffc323f95d0 R15: 00007ffc323f96b8
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 48 81 fb 00 50 69 8f cmp $0xffffffff8f695000,%rbx
9: 0f 93 c1 setae %cl
c: 48 81 fb 9f a9 7e 8f cmp $0xffffffff8f7ea99f,%rbx
13: 0f 92 c2 setb %dl
16: 20 ca and %cl,%dl
18: 08 c2 or %al,%dl
1a: 0f b6 c2 movzbl %dl,%eax
1d: 5b pop %rbx
1e: c3 ret
1f: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1)
26: 00 00 00
29: 55 push %rbp
* 2a: 41 56 push %r14 <-- trapping instruction
2c: 53 push %rbx
2d: 48 81 ff 00 00 00 81 cmp $0xffffffff81000000,%rdi
34: 0f 93 c0 setae %al
37: 48 81 ff 40 78 60 8a cmp $0xffffffff8a607840,%rdi
3e: 0f .byte 0xf
3f: 92 xchg %eax,%edx