------------[ cut here ]------------
WARNING: CPU: 1 PID: 5664 at net/mac80211/tx.c:4944 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4944 [inline]
WARNING: CPU: 1 PID: 5664 at net/mac80211/tx.c:4944 __ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5345
Modules linked in:
CPU: 1 PID: 5664 Comm: syz.3.422 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:4944 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5345
Code: 24 4c 89 e7 e8 7e 06 0a f8 45 31 f6 4c 8b bc 24 a0 00 00 00 e9 7a fe ff ff e8 79 66 d1 f7 0f 0b e9 f6 f7 ff ff e8 6d 66 d1 f7 <0f> 0b e9 48 fb ff ff e8 61 66 d1 f7 48 c7 c7 50 f1 fa 8d 4c 89 e6
RSP: 0000:ffffc900001e0a30 EFLAGS: 00010246
RAX: ffffffff89b10ee3 RBX: ffffffff89b0fce6 RCX: ffff88802aa20000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff88802aa20000 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff88807f33a228
R13: dffffc0000000000 R14: ffff88807f33a760 R15: ffff888055c5fc24
FS: 0000555562653500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c45bf99 CR3: 0000000028e47000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ieee80211_beacon_get_tim+0x63/0x4e0 net/mac80211/tx.c:5472
ieee80211_beacon_get include/net/mac80211.h:5335 [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+0x54a/0xd50 kernel/time/hrtimer.c:1811
hrtimer_run_softirq+0x183/0x2a0 kernel/time/hrtimer.c:1828
handle_softirqs+0x2a1/0x930 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:finish_task_switch+0x26a/0x8f0 kernel/sched/core.c:5124
Code: 0f 84 3b 01 00 00 48 85 db 0f 85 5a 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 4c 89 e7 e8 b0 5c de 08 e8 4b 2d 2f 00 fb 4c 8b 65 c0 <49> 8d bc 24 f8 15 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0000:ffffc90004bcfcd8 EFLAGS: 00000286
RAX: 84a24c8e0f0da200 RBX: 0000000000000000 RCX: 84a24c8e0f0da200
RDX: dffffc0000000000 RSI: ffffffff8a8c1120 RDI: ffffffff8adf13a0
RBP: ffffc90004bcfd30 R08: ffff8880b8f3ab03 R09: 1ffff110171e7560
R10: dffffc0000000000 R11: ffffed10171e7561 R12: ffff88802aa20000
R13: dffffc0000000000 R14: ffff888076261dc0 R15: ffff8880b8f3b5d0
context_switch kernel/sched/core.c:5248 [inline]
__schedule+0x11d9/0x40e0 kernel/sched/core.c:6562
schedule+0xb9/0x180 kernel/sched/core.c:6638
exit_to_user_mode_loop+0x47/0x110 kernel/entry/common.c:165
exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:316
asm_sysvec_reschedule_ipi+0x16/0x20 arch/x86/include/asm/idtentry.h:696
RIP: 0033:0x7ff26966d2b5
Code: 72 f3 48 8d 46 f8 48 8b 76 f8 48 39 f2 73 13 66 0f 1f 44 00 00 48 8b 70 f8 48 83 e8 08 48 39 f2 72 f3 48 39 c3 73 3e 48 89 33 <48> 89 c6 48 83 c3 08 48 89 08 48 8b 0b 48 8b 55 00 eb c0 48 39 f2
RSP: 002b:00007ffd4aa96490 EFLAGS: 00000283
RAX: 00007ff269465e08 RBX: 00007ff269465cb8 RCX: ffffffff8a1dab1b
RDX: ffffffff8a1dab1b RSI: ffffffff8a1dab1b RDI: 00007ff269465d60
RBP: 00007ff269465c68 R08: 00007ff269a00000 R09: 00007ff269a16038
R10: 0000000000000001 R11: 000000000000000b R12: 00007ff269465e58
R13: 0000000000000014 R14: 000000000000003e R15: 0000000000000001
----------------
Code disassembly (best guess):
0: 0f 84 3b 01 00 00 je 0x141
6: 48 85 db test %rbx,%rbx
9: 0f 85 5a 01 00 00 jne 0x169
f: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
14: 4c 8b 75 d0 mov -0x30(%rbp),%r14
18: 4c 89 e7 mov %r12,%rdi
1b: e8 b0 5c de 08 call 0x8de5cd0
20: e8 4b 2d 2f 00 call 0x2f2d70
25: fb sti
26: 4c 8b 65 c0 mov -0x40(%rbp),%r12
* 2a: 49 8d bc 24 f8 15 00 lea 0x15f8(%r12),%rdi <-- trapping instruction
31: 00
32: 48 89 f8 mov %rdi,%rax
35: 48 c1 e8 03 shr $0x3,%rax
39: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax
3e: 84 c0 test %al,%al