------------[ cut here ]------------
WARNING: net/mac80211/tx.c:5024 at __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5024 [inline], CPU#0: syz.8.2854/17816
WARNING: net/mac80211/tx.c:5024 at __ieee80211_beacon_get+0x125d/0x1630 net/mac80211/tx.c:5453, CPU#0: syz.8.2854/17816
Modules linked in:
CPU: 0 UID: 0 PID: 17816 Comm: syz.8.2854 Not tainted 6.16.0-rc2-next-20250618-syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5024 [inline]
RIP: 0010:__ieee80211_beacon_get+0x125d/0x1630 net/mac80211/tx.c:5453
Code: e7 e8 a7 b0 2f f7 45 31 f6 4c 8b bc 24 a0 00 00 00 e9 78 fe ff ff e8 f2 7d d6 f6 90 0f 0b 90 e9 e0 f7 ff ff e8 e4 7d d6 f6 90 <0f> 0b 90 e9 38 fb ff ff e8 d6 7d d6 f6 48 c7 c7 20 7e 79 8f 4c 89
RSP: 0018:ffffc900000079f8 EFLAGS: 00010246
RAX: ffffffff8ae9d95c RBX: ffffffff8ae9c736 RCX: ffff888030033c00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff888030033c00 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff88804c3fa500
R13: dffffc0000000000 R14: ffff88804c3fa9d0 R15: ffff888032607024
FS: 00007f10f913a6c0(0000) GS:ffff888125c3d000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c34fe9b CR3: 0000000043186000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ieee80211_beacon_get_tim+0xb4/0x2b0 net/mac80211/tx.c:5580
ieee80211_beacon_get include/net/mac80211.h:5638 [inline]
mac80211_hwsim_beacon_tx+0x3ce/0x860 drivers/net/wireless/virtual/mac80211_hwsim.c:2319
__iterate_interfaces+0x2ab/0x590 net/mac80211/util.c:761
ieee80211_iterate_active_interfaces_atomic+0xdb/0x180 net/mac80211/util.c:797
mac80211_hwsim_beacon+0xbb/0x1c0 drivers/net/wireless/virtual/mac80211_hwsim.c:2353
__run_hrtimer kernel/time/hrtimer.c:1761 [inline]
__hrtimer_run_queues+0x529/0xc60 kernel/time/hrtimer.c:1825
hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1842
handle_softirqs+0x286/0x870 kernel/softirq.c:579
__do_softirq kernel/softirq.c:613 [inline]
invoke_softirq kernel/softirq.c:453 [inline]
__irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1050
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xa8/0x110 kernel/locking/spinlock.c:194
Code: 74 05 e8 1b 7e 5b f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 a3 6a 24 f6 65 8b 05 4c c4 31 07 85 c0 74 40 48 c7 04 24 0e 36
RSP: 0018:ffffc9000c3c6e40 EFLAGS: 00000206
RAX: b824a6b5ffe6c000 RBX: 0000000000000a02 RCX: b824a6b5ffe6c000
RDX: 0000000000000006 RSI: ffffffff8d98d2f3 RDI: 0000000000000001
RBP: ffffc9000c3c6ed0 R08: ffffffff8fa16cf7 R09: 1ffffffff1f42d9e
R10: dffffc0000000000 R11: fffffbfff1f42d9f R12: dffffc0000000000
R13: 1ffff92001878e04 R14: ffff88813fffc180 R15: 1ffff92001878dc8
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
rmqueue_bulk mm/page_alloc.c:2366 [inline]
__rmqueue_pcplist+0x1419/0x1df0 mm/page_alloc.c:3067
rmqueue_pcplist mm/page_alloc.c:3109 [inline]
rmqueue mm/page_alloc.c:3140 [inline]
get_page_from_freelist+0x86a/0x22c0 mm/page_alloc.c:3666
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4959
alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2419
folio_alloc_mpol_noprof+0x39/0x70 mm/mempolicy.c:2438
shmem_alloc_folio mm/shmem.c:1847 [inline]
shmem_alloc_and_add_folio+0x447/0xf60 mm/shmem.c:1886
shmem_get_folio_gfp+0x59d/0x1660 mm/shmem.c:2532
shmem_fault+0x179/0x390 mm/shmem.c:2733
__do_fault+0x138/0x390 mm/memory.c:5187
do_read_fault mm/memory.c:5608 [inline]
do_fault mm/memory.c:5742 [inline]
do_pte_missing mm/memory.c:4269 [inline]
handle_pte_fault mm/memory.c:6087 [inline]
__handle_mm_fault+0x37ed/0x5620 mm/memory.c:6230
handle_mm_fault+0x40a/0x8e0 mm/memory.c:6399
faultin_page mm/gup.c:1186 [inline]
__get_user_pages+0x1aef/0x30b0 mm/gup.c:1488
populate_vma_page_range+0x29f/0x3a0 mm/gup.c:1922
__mm_populate+0x24c/0x380 mm/gup.c:2025
mm_populate include/linux/mm.h:3372 [inline]
vm_mmap_pgoff+0x3f0/0x4c0 mm/util.c:584
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f10f838e929
Code: ff ff c3 66 2e 0f 1f 84 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
vkms_vblank_simulate: vblank timer overrun
RSP: 002b:00007f10f913a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f10f85b5fa0 RCX: 00007f10f838e929
RDX: b635773f06ebbeee RSI: 0000000000b36000 RDI: 0000200000000000
RBP: 00007f10f8410b39 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f10f85b5fa0 R15: 00007fff37135ce8
----------------
Code disassembly (best guess):
0: 74 05 je 0x7
2: e8 1b 7e 5b f6 call 0xf65b7e22
7: 48 c7 44 24 20 00 00 movq $0x0,0x20(%rsp)
e: 00 00
10: 9c pushf
11: 8f 44 24 20 pop 0x20(%rsp)
15: f6 44 24 21 02 testb $0x2,0x21(%rsp)
1a: 75 4f jne 0x6b
1c: f7 c3 00 02 00 00 test $0x200,%ebx
22: 74 01 je 0x25
24: fb sti
25: bf 01 00 00 00 mov $0x1,%edi
* 2a: e8 a3 6a 24 f6 call 0xf6246ad2 <-- trapping instruction
2f: 65 8b 05 4c c4 31 07 mov %gs:0x731c44c(%rip),%eax # 0x731c482
36: 85 c0 test %eax,%eax
38: 74 40 je 0x7a
3a: 48 rex.W
3b: c7 .byte 0xc7
3c: 04 24 add $0x24,%al
3e: 0e (bad)
3f: 36 ss