------------[ cut here ]------------
WARNING: CPU: 1 PID: 6075 at net/mac80211/tx.c:5031 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5031 [inline]
WARNING: CPU: 1 PID: 6075 at net/mac80211/tx.c:5031 __ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5442
Modules linked in:
CPU: 1 PID: 6075 Comm: syz.3.47 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
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 0e 25 db f7 45 31 f6 4c 8b bc 24 a0 00 00 00 e9 7a fe ff ff e8 59 f6 9d f7 0f 0b e9 f6 f7 ff ff e8 4d f6 9d f7 <0f> 0b e9 48 fb ff ff e8 41 f6 9d f7 48 c7 c7 e0 96 23 8e 4c 89 e6
RSP: 0018:ffffc900001f0a18 EFLAGS: 00010246
RAX: ffffffff89e79a73 RBX: ffffffff89e78876 RCX: ffff888023db0000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff888023db0000 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff8880518ea3c0
R13: dffffc0000000000 R14: ffff8880518ea8b0 R15: ffff88805e673c24
FS: 00007fe5d9a296c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe5d9a29d58 CR3: 000000002b2af000 CR4: 00000000003506e0
Call Trace:
ieee80211_beacon_get_tim+0xb8/0x560 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+0x51e/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+0xc7/0x190 kernel/softirq.c:661
irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
instr_sysvec_call_function_single arch/x86/kernel/smp.c:262 [inline]
sysvec_call_function_single+0xa1/0xc0 arch/x86/kernel/smp.c:262
asm_sysvec_call_function_single+0x1a/0x20 arch/x86/include/asm/idtentry.h:694
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xa9/0x110 kernel/locking/spinlock.c:194
Code: 74 05 e8 0a d9 1a f7 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4b f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 e2 53 ea f6 65 8b 05 d3 9a 92 75 85 c0 74 3c 48 c7 04 24 0e 36
RSP: 0018:ffffc90005787de0 EFLAGS: 00000206
RAX: 4d8f30e71dc43000 RBX: 0000000000000a02 RCX: 4d8f30e71dc43000
RDX: dffffc0000000000 RSI: ffffffff8aaabce0 RDI: 0000000000000001
RBP: ffffc90005787e78 R08: ffffffff8e4a212f R09: 1ffffffff1c94425
R10: dffffc0000000000 R11: fffffbfff1c94426 R12: dffffc0000000000
R13: ffff888023db0000 R14: ffff88802b671108 R15: 1ffff92000af0fbc
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
kcov_ioctl+0x1f9/0x630 kernel/kcov.c:752
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:871 [inline]
__se_sys_ioctl+0xfd/0x170 fs/ioctl.c:857
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fe5d8b8f34b
Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00
RSP: 002b:00007fe5d9a29050 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fe5d8de6218 RCX: 00007fe5d8b8f34b
RDX: 0000000000000000 RSI: 0000000000006364 RDI: 00000000000000da
RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fff5e0fd6e7
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fe5d8de6218 R14: 00007fff5e0fd600 R15: 00007fff5e0fd6e8
----------------
Code disassembly (best guess):
0: 74 05 je 0x7
2: e8 0a d9 1a f7 call 0xf71ad911
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 4b jne 0x67
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 e2 53 ea f6 call 0xf6ea5411 <-- trapping instruction
2f: 65 8b 05 d3 9a 92 75 mov %gs:0x75929ad3(%rip),%eax # 0x75929b09
36: 85 c0 test %eax,%eax
38: 74 3c je 0x76
3a: 48 rex.W
3b: c7 .byte 0xc7
3c: 04 24 add $0x24,%al
3e: 0e (bad)
3f: 36 ss