------------[ cut here ]------------
WARNING: CPU: 0 PID: 4864 at net/mac80211/tx.c:4859 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
WARNING: CPU: 0 PID: 4864 at net/mac80211/tx.c:4859 __ieee80211_beacon_get+0x172c/0x1f80 net/mac80211/tx.c:5083
Modules linked in:
CPU: 0 PID: 4864 Comm: syz.4.127 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:4859 [inline]
RIP: 0010:__ieee80211_beacon_get+0x172c/0x1f80 net/mac80211/tx.c:5083
Code: f8 0f 0b e9 f1 fa ff ff e8 f1 c2 41 f8 0f 0b 4c 8b 74 24 08 e9 36 fe ff ff e8 e0 c2 41 f8 0f 0b e9 3c ef ff ff e8 d4 c2 41 f8 <0f> 0b e9 b8 f2 ff ff e8 f8 dd 6b 00 44 89 e1 80 e1 07 80 c1 03 38
RSP: 0018:ffffc900000078c0 EFLAGS: 00010246
RAX: ffffffff8936093c RBX: ffff888025fb4c80 RCX: ffff888026489dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000007ae8 R08: ffff888026489dc0 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff888026c5b400
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff92000000f28
FS: 00007f32161e16c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000002e3030 CR3: 000000007d182000 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+0x53d/0xc40 kernel/time/hrtimer.c:1749
hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766
handle_softirqs+0x328/0x820 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x12f/0x220 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:scm_recv+0xef/0x540 include/net/scm.h:126
Code: 00 00 00 00 fc ff df 41 80 3c 06 00 74 08 4c 89 ff e8 05 22 3b f9 4d 8b 27 41 83 e4 08 31 ff 4c 89 e6 e8 34 bd f6 f8 4d 85 ed <74> 19 4d 85 e4 49 bd 00 00 00 00 00 fc ff df 75 4c e8 3b b9 f6 f8
RSP: 0018:ffffc90003cdf660 EFLAGS: 00000246
RAX: ffffffff888112bc RBX: ffffc90003cdf800 RCX: ffff888026489dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003cdf750 R08: dffffc0000000000 R09: ffffed100ea7c242
R10: ffffed100ea7c242 R11: 1ffff1100ea7c241 R12: 0000000000000000
R13: 0000000000000000 R14: 1ffff1100ea7c241 R15: ffff8880753e1208
__unix_dgram_recvmsg+0x9bf/0xd50 net/unix/af_unix.c:2392
____sys_recvmsg+0x291/0x580 net/socket.c:-1
___sys_recvmsg+0x1af/0x4f0 net/socket.c:2707
do_recvmmsg+0x344/0x7a0 net/socket.c:2801
__sys_recvmmsg net/socket.c:2880 [inline]
__do_sys_recvmmsg net/socket.c:2903 [inline]
__se_sys_recvmmsg net/socket.c:2896 [inline]
__x64_sys_recvmmsg+0x18d/0x240 net/socket.c:2896
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f3216b93749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f32161e1038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f3216dea090 RCX: 00007f3216b93749
RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000003
RBP: 00007f3216c17f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3216dea128 R14: 00007f3216dea090 R15: 00007ffd85415628
----------------
Code disassembly (best guess), 6 bytes skipped:
0: df 41 80 filds -0x80(%rcx)
3: 3c 06 cmp $0x6,%al
5: 00 74 08 4c add %dh,0x4c(%rax,%rcx,1)
9: 89 ff mov %edi,%edi
b: e8 05 22 3b f9 call 0xf93b2215
10: 4d 8b 27 mov (%r15),%r12
13: 41 83 e4 08 and $0x8,%r12d
17: 31 ff xor %edi,%edi
19: 4c 89 e6 mov %r12,%rsi
1c: e8 34 bd f6 f8 call 0xf8f6bd55
21: 4d 85 ed test %r13,%r13
* 24: 74 19 je 0x3f <-- trapping instruction
26: 4d 85 e4 test %r12,%r12
29: 49 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%r13
30: fc ff df
33: 75 4c jne 0x81
35: e8 3b b9 f6 f8 call 0xf8f6b975