------------[ cut here ]------------
WARNING: CPU: 0 PID: 8416 at net/mac80211/tx.c:4961 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4961 [inline]
WARNING: CPU: 0 PID: 8416 at net/mac80211/tx.c:4961 __ieee80211_beacon_get+0x1141/0x1520 net/mac80211/tx.c:5362
Modules linked in:
CPU: 0 PID: 8416 Comm: syz.5.1393 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4961 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1141/0x1520 net/mac80211/tx.c:5362
Code: f7 4c 89 ef e8 80 75 07 f8 45 31 ed 4c 8b bc 24 a0 00 00 00 e9 7f fe ff ff e8 db d0 ce f7 0f 0b e9 61 f8 ff ff e8 cf d0 ce f7 <0f> 0b e9 85 fb ff ff e8 c3 d0 ce f7 48 c7 c7 a0 fc fb 8d 4c 89 e6
RSP: 0018:ffffc90000007a48 EFLAGS: 00010246
RAX: ffffffff89b35d51 RBX: dffffc0000000000 RCX: ffff8880510dda00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff8880510dda00 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff88806624e228
R13: ffff8880558d1424 R14: ffff88806624e760 R15: ffff8880558d1400
FS: 00007fafcc07d6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fafcc07cff8 CR3: 000000005e6fe000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ieee80211_beacon_get_tim+0x63/0x4e0 net/mac80211/tx.c:5489
ieee80211_beacon_get include/net/mac80211.h:5335 [inline]
mac80211_hwsim_beacon_tx+0x21c/0xae0 drivers/net/wireless/mac80211_hwsim.c:2091
__iterate_interfaces+0x225/0x4c0 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:1751 [inline]
__hrtimer_run_queues+0x522/0xc90 kernel/time/hrtimer.c:1815
hrtimer_run_softirq+0x173/0x290 kernel/time/hrtimer.c:1832
handle_softirqs+0x291/0x910 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+0x267/0x8e0 kernel/sched/core.c:5125
Code: d6 08 85 c0 0f 84 38 01 00 00 48 85 db 0f 85 57 01 00 00 e9 e7 04 00 00 4c 89 e7 e8 93 b1 e0 08 e8 2e 11 2f 00 fb 4c 8b 65 b8 <49> 8d bc 24 f8 15 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0
RSP: 0018:ffffc90003b472c0 EFLAGS: 00000282
RAX: 122f757703d8e600 RBX: 0000000000000000 RCX: 122f757703d8e600
RDX: dffffc0000000000 RSI: ffffffff8a8c17a0 RDI: ffffffff8adf5de0
RBP: ffffc90003b47310 R08: ffffffff90b102ef R09: 1ffffffff216205d
R10: dffffc0000000000 R11: fffffbfff216205e R12: ffff8880510dda00
R13: ffff8880b8e3ba48 R14: dffffc0000000000 R15: ffff8880b8e3b7d0
context_switch kernel/sched/core.c:5249 [inline]
__schedule+0x1087/0x4030 kernel/sched/core.c:6563
preempt_schedule_common+0x82/0xd0 kernel/sched/core.c:6732
preempt_schedule+0xbc/0xd0 kernel/sched/core.c:6756
preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
_raw_spin_unlock_irqrestore+0x10d/0x120 kernel/locking/spinlock.c:194
spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
__wake_up_common_lock kernel/sched/wait.c:140 [inline]
__wake_up_sync_key+0x128/0x190 kernel/sched/wait.c:208
__unix_dgram_recvmsg+0x4b7/0xd90 net/unix/af_unix.c:2478
____sys_recvmsg+0x2c8/0x5b0 net/socket.c:-1
___sys_recvmsg+0x210/0x590 net/socket.c:2780
do_recvmmsg+0x370/0x810 net/socket.c:2874
__sys_recvmmsg net/socket.c:2953 [inline]
__do_sys_recvmmsg net/socket.c:2976 [inline]
__se_sys_recvmmsg net/socket.c:2969 [inline]
__x64_sys_recvmmsg+0x195/0x250 net/socket.c:2969
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fafcb19e0d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fafcc07d028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007fafcb426090 RCX: 00007fafcb19e0d9
RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000003
RBP: 00007fafcb235024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fafcb426128 R14: 00007fafcb426090 R15: 00007ffd64b9cee8
----------------
Code disassembly (best guess), 1 bytes skipped:
0: 08 85 c0 0f 84 38 or %al,0x38840fc0(%rbp)
6: 01 00 add %eax,(%rax)
8: 00 48 85 add %cl,-0x7b(%rax)
b: db 0f fisttpl (%rdi)
d: 85 57 01 test %edx,0x1(%rdi)
10: 00 00 add %al,(%rax)
12: e9 e7 04 00 00 jmp 0x4fe
17: 4c 89 e7 mov %r12,%rdi
1a: e8 93 b1 e0 08 call 0x8e0b1b2
1f: e8 2e 11 2f 00 call 0x2f1152
24: fb sti
25: 4c 8b 65 b8 mov -0x48(%rbp),%r12
* 29: 49 8d bc 24 f8 15 00 lea 0x15f8(%r12),%rdi <-- trapping instruction
30: 00
31: 48 89 f8 mov %rdi,%rax
34: 48 c1 e8 03 shr $0x3,%rax
38: 42 0f b6 04 30 movzbl (%rax,%r14,1),%eax
3d: 84 c0 test %al,%al