------------[ cut here ]------------
WARNING: CPU: 0 PID: 0 at net/mac80211/tx.c:4859 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
WARNING: CPU: 0 PID: 0 at net/mac80211/tx.c:4859 __ieee80211_beacon_get+0x179f/0x2000 net/mac80211/tx.c:5083
Modules linked in:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
RIP: 0010:__ieee80211_beacon_get+0x179f/0x2000 net/mac80211/tx.c:5083
Code: 2a f8 0f 0b 4f 89 64 2f 04 4f 89 64 2f 0c 43 c6 44 2f 14 f8 e9 19 fe ff ff e8 0d 4b 2a f8 0f 0b e9 03 ef ff ff e8 01 4b 2a f8 <0f> 0b e9 76 f2 ff ff e8 a5 92 6d 00 89 d9 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc900000078e0 EFLAGS: 00010246
RAX: ffffffff894ed60f RBX: ffff88805ea9e268 RCX: ffffffff8c0bc480
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007b08 R08: ffffffff8c0bc480 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff8880234d9800
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff92000000f2c
FS: 0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa0add08e80 CR3: 000000002baf6000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ieee80211_beacon_get_tim+0x48/0x840 net/mac80211/tx.c:5202
ieee80211_beacon_get include/net/mac80211.h:4983 [inline]
mac80211_hwsim_beacon_tx+0xf4/0x920 drivers/net/wireless/mac80211_hwsim.c:1812
__iterate_interfaces+0x243/0x500 net/mac80211/util.c:793
ieee80211_iterate_active_interfaces_atomic+0xb3/0x140 net/mac80211/util.c:829
mac80211_hwsim_beacon+0x9b/0x180 drivers/net/wireless/mac80211_hwsim.c:1865
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x4f2/0xb70 kernel/time/hrtimer.c:1749
hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766
handle_softirqs+0x339/0x830 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:flush_smp_call_function_from_idle+0x1e9/0x240 kernel/smp.c:699
Code: 00 4d 85 f6 75 16 e8 06 75 0b 00 eb 15 e8 ff 74 0b 00 e8 ba bc 4e 08 4d 85 f6 74 ea e8 f0 74 0b 00 fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 3c 00 00 00 00 43 c7 44 3c 08 00 00 00 00 65 48 8b 04 25
RSP: 0018:ffffffff8c007d20 EFLAGS: 00000293
RAX: ffffffff816dac20 RBX: 0000000000000000 RCX: ffffffff8c0bc480
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffffff8c007dd0 R08: ffffc9000440fb2b R09: 1ffff92000881f65
R10: dffffc0000000000 R11: fffff52000881f66 R12: 1ffffffff1800fa4
R13: dffffc0000000000 R14: 0000000000000200 R15: dffffc0000000000
do_idle+0x52e/0x580 kernel/sched/idle.c:333
cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:403
start_kernel+0x489/0x540 init/main.c:1154
secondary_startup_64_no_verify+0xb1/0xbb
----------------
Code disassembly (best guess):
0: 00 4d 85 add %cl,-0x7b(%rbp)
3: f6 75 16 divb 0x16(%rbp)
6: e8 06 75 0b 00 call 0xb7511
b: eb 15 jmp 0x22
d: e8 ff 74 0b 00 call 0xb7511
12: e8 ba bc 4e 08 call 0x84ebcd1
17: 4d 85 f6 test %r14,%r14
1a: 74 ea je 0x6
1c: e8 f0 74 0b 00 call 0xb7511
21: fb sti
22: 48 c7 04 24 0e 36 e0 movq $0x45e0360e,(%rsp)
29: 45
* 2a: 4b c7 04 3c 00 00 00 movq $0x0,(%r12,%r15,1) <-- trapping instruction
31: 00
32: 43 c7 44 3c 08 00 00 movl $0x0,0x8(%r12,%r15,1)
39: 00 00
3b: 65 gs
3c: 48 rex.W
3d: 8b .byte 0x8b
3e: 04 25 add $0x25,%al