------------[ cut here ]------------
WARNING: net/mac80211/tx.c:5024 at __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5024 [inline], CPU#1: syz.1.4140/18359
WARNING: net/mac80211/tx.c:5024 at __ieee80211_beacon_get+0x125d/0x1630 net/mac80211/tx.c:5453, CPU#1: syz.1.4140/18359
Modules linked in:
CPU: 1 UID: 0 PID: 18359 Comm: syz.1.4140 Not tainted 6.16.0-rc2-next-20250616-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 27 f2 2f f7 45 31 f6 4c 8b bc 24 a0 00 00 00 e9 78 fe ff ff e8 92 bf d6 f6 90 0f 0b 90 e9 e0 f7 ff ff e8 84 bf d6 f6 90 <0f> 0b 90 e9 38 fb ff ff e8 76 bf d6 f6 48 c7 c7 a0 5c 79 8f 4c 89
RSP: 0000:ffffc90000a089f8 EFLAGS: 00010246
RAX: ffffffff8ae9aaac RBX: ffffffff8ae99886 RCX: ffff888033858000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff888033858000 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff88805a95a500
R13: dffffc0000000000 R14: ffff88805a95a9d0 R15: ffff8880524f3c24
FS: 0000555573d39500(0000) GS:ffff888125d40000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f319ff8 CR3: 00000000525ae000 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+0x2a8/0x590 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+0x283/0x870 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:exit_to_user_mode_loop kernel/entry/common.c:-1 [inline]
RIP: 0010:exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline]
RIP: 0010:irqentry_exit_to_user_mode+0x51/0x120 kernel/entry/common.c:184
Code: 07 85 c0 0f 85 c3 00 00 00 e8 8b 4d 41 f6 65 4c 8b 34 25 08 00 9e 92 49 8b 3e f7 c7 1e 30 02 00 74 53 49 89 ff e8 7f 4c 41 f6 <4c> 89 f8 a8 18 74 08 e8 73 0f 01 00 4c 89 f8 a9 00 10 00 00 74 0b
RSP: 0000:ffffc9000e1aff38 EFLAGS: 00000286
RAX: fc3f607e031bc900 RBX: ffffc9000e1aff58 RCX: fc3f607e031bc900
RDX: 0000000000000000 RSI: ffffffff8d98bd8e RDI: ffffffff8be2ec60
RBP: 0000000000000000 R08: ffffffff8fa14ff7 R09: 1ffffffff1f429fe
R10: dffffc0000000000 R11: fffffbfff1f429ff R12: 0000000000000000
R13: 0000000000000000 R14: ffff888033858000 R15: 0000000000000008
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:707
RIP: 0033:0x7f52f366e941
Code: 45 31 f6 44 0f b6 e6 85 c0 0f 84 9e 00 00 00 44 89 f9 49 8b 50 30 4c 89 f0 49 03 14 ca 80 3d 6d 92 34 00 00 49 89 d6 48 89 d5 <74> 28 25 ff 0f 00 00 83 f0 3d 8d 04 c0 89 c5 c1 ed 04 31 c5 69 ed
RSP: 002b:00007ffe197cf6a0 EFLAGS: 00000202
RAX: ffffffff81b93a65 RBX: 00007f52f44e5720 RCX: 00000000000061fd
RDX: ffffffff81b97445 RSI: ffffffff81b93b6f RDI: 0000000000000010
RBP: ffffffff81b97445 R08: 00007f52f39b61f8 R09: 00007f52f39a2000
R10: 00007f52f25fb008 R11: 0000000000000010 R12: 0000000000000010
R13: 0000000000000000 R14: ffffffff81b97445 R15: 00000000000061fd
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 85 c0 test %eax,%eax
2: 0f 85 c3 00 00 00 jne 0xcb
8: e8 8b 4d 41 f6 call 0xf6414d98
d: 65 4c 8b 34 25 08 00 mov %gs:0xffffffff929e0008,%r14
14: 9e 92
16: 49 8b 3e mov (%r14),%rdi
19: f7 c7 1e 30 02 00 test $0x2301e,%edi
1f: 74 53 je 0x74
21: 49 89 ff mov %rdi,%r15
24: e8 7f 4c 41 f6 call 0xf6414ca8
* 29: 4c 89 f8 mov %r15,%rax <-- trapping instruction
2c: a8 18 test $0x18,%al
2e: 74 08 je 0x38
30: e8 73 0f 01 00 call 0x10fa8
35: 4c 89 f8 mov %r15,%rax
38: a9 00 10 00 00 test $0x1000,%eax
3d: 74 0b je 0x4a