------------[ cut here ]------------
WARNING: CPU: 0 PID: 9660 at net/mac80211/tx.c:5031 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5031 [inline]
WARNING: CPU: 0 PID: 9660 at net/mac80211/tx.c:5031 __ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5442
Modules linked in:
CPU: 0 PID: 9660 Comm: syz.8.778 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:5031 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5442
Code: 24 4c 89 e7 e8 2e a7 c1 f7 45 31 f6 4c 8b bc 24 a0 00 00 00 e9 7a fe ff ff e8 09 ee 83 f7 0f 0b e9 f6 f7 ff ff e8 fd ed 83 f7 <0f> 0b e9 48 fb ff ff e8 f1 ed 83 f7 48 c7 c7 00 61 64 8e 4c 89 e6
RSP: 0000:ffffc90000007a18 EFLAGS: 00010246
RAX: ffffffff8a032e63 RBX: ffffffff8a031c66 RCX: ffff8880261abc00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff8880261abc00 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff88802beae3c0
R13: dffffc0000000000 R14: ffff88802beae8b0 R15: ffff888030b07824
FS: 00005555758c8500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31d20ff8 CR3: 0000000024306000 CR4: 00000000003506f0
Call Trace:
ieee80211_beacon_get_tim+0xbf/0x580 net/mac80211/tx.c:5569
ieee80211_beacon_get include/net/mac80211.h:5440 [inline]
mac80211_hwsim_beacon_tx+0x3c7/0x780 drivers/net/wireless/virtual/mac80211_hwsim.c:2265
__iterate_interfaces+0x243/0x500 net/mac80211/util.c:766
ieee80211_iterate_active_interfaces_atomic+0xdb/0x180 net/mac80211/util.c:802
mac80211_hwsim_beacon+0xbb/0x1b0 drivers/net/wireless/virtual/mac80211_hwsim.c:2295
__run_hrtimer kernel/time/hrtimer.c:1750 [inline]
__hrtimer_run_queues+0x520/0xc40 kernel/time/hrtimer.c:1814
hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1831
handle_softirqs+0x280/0x820 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:raw_spin_rq_unlock_irq+0x13/0x90 kernel/sched/sched.h:1392
Code: 5d 41 5e 41 5f 5d c3 e8 fb 35 26 09 66 2e 0f 1f 84 00 00 00 00 00 90 41 57 41 56 53 eb 11 e8 34 df 2f 09 e8 cf ae 2e 00 fb 5b <41> 5e 41 5f c3 49 be 00 00 00 00 00 fc ff df 49 89 ff 48 8d 9f 58
RSP: 0000:ffffc9000cce7b68 EFLAGS: 00000286
RAX: ec9bcd3697329b00 RBX: ffff8880b8e3cd48 RCX: ec9bcd3697329b00
RDX: dffffc0000000000 RSI: ffffffff8acac960 RDI: ffffffff8b1c85a0
RBP: ffffc9000cce7d90 R08: ffffffff8e8aeeef R09: 1ffffffff1d15ddd
R10: dffffc0000000000 R11: fffffbfff1d15dde R12: dffffc0000000000
R13: ffff8880261abc00 R14: dffffc0000000000 R15: ffff8880b8e3cd48
__schedule+0x179f/0x45a0 kernel/sched/core.c:6704
preempt_schedule_irq+0xbf/0x150 kernel/sched/core.c:7010
irqentry_exit+0x67/0x70 kernel/entry/common.c:438
asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:694
RIP: 0010:exit_to_user_mode_loop+0x40/0x110 kernel/entry/common.c:164
Code: fb eb 1d e8 32 53 11 09 65 48 8b 05 ba df 8f 7e 4c 8b 30 41 f7 c6 0e 30 02 00 0f 84 c4 00 00 00 e8 15 b6 19 00 fb 41 f6 c6 08 <74> 05 e8 29 7e 19 09 41 f7 c6 00 10 00 00 74 08 48 89 df e8 18 94
RSP: 0000:ffffc9000cce7f10 EFLAGS: 00000202
RAX: ec9bcd3697329b00 RBX: ffffc9000cce7f58 RCX: ec9bcd3697329b00
RDX: dffffc0000000000 RSI: ffffffff8acac960 RDI: ffffffff8b1c85a0
RBP: 0000000000000000 R08: ffffffff8e8aeeef R09: 1ffffffff1d15ddd
R10: dffffc0000000000 R11: fffffbfff1d15dde R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000008 R15: ffff8880261abc00
exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
irqentry_exit_to_user_mode+0x9/0x30 kernel/entry/common.c:315
asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:694
RIP: 0033:0x7fd06d670e07
Code: 03 14 ef 80 3d c1 6f 3a 00 00 49 89 d6 48 89 d3 74 28 25 ff 0f 00 00 83 f0 3d 8d 04 c0 89 c3 c1 eb 04 31 c3 69 db 2d eb d4 27 <89> d8 c1 e8 0f 31 c3 81 e3 ff 0f 00 00 48 31 d3 80 3d 2a 12 3a 00
RSP: 002b:00007ffc429d36d0 EFLAGS: 00000a03
RAX: 00000000000050af RBX: 000000005e518501 RCX: ffffffff89cdd4c5
RDX: ffffffff89cdd3d4 RSI: ffffffff89cdd4c5 RDI: 00007fd06cdfd008
RBP: 00000000000006d6 R08: 00007fd06da00000 R09: 00007fd06da02000
R10: 0000000089cdd4c9 R11: 0000000000000010 R12: 00007fd06da16128
R13: 0000000000017ad7 R14: ffffffff89cdd3d4 R15: 00007fd06e545720
----------------
Code disassembly (best guess):
0: 5d pop %rbp
1: 41 5e pop %r14
3: 41 5f pop %r15
5: 5d pop %rbp
6: c3 ret
7: e8 fb 35 26 09 call 0x9263607
c: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1)
13: 00 00 00
16: 90 nop
17: 41 57 push %r15
19: 41 56 push %r14
1b: 53 push %rbx
1c: eb 11 jmp 0x2f
1e: e8 34 df 2f 09 call 0x92fdf57
23: e8 cf ae 2e 00 call 0x2eaef7
28: fb sti
29: 5b pop %rbx
* 2a: 41 5e pop %r14 <-- trapping instruction
2c: 41 5f pop %r15
2e: c3 ret
2f: 49 be 00 00 00 00 00 movabs $0xdffffc0000000000,%r14
36: fc ff df
39: 49 89 ff mov %rdi,%r15
3c: 48 rex.W
3d: 8d .byte 0x8d
3e: 9f lahf
3f: 58 pop %rax