------------[ cut here ]------------ WARNING: CPU: 0 PID: 4558 at net/mac80211/tx.c:4859 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline] WARNING: CPU: 0 PID: 4558 at net/mac80211/tx.c:4859 __ieee80211_beacon_get+0x172c/0x1f80 net/mac80211/tx.c:5083 Modules linked in: CPU: 0 PID: 4558 Comm: syz.3.62 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 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 51 6c 3a f8 0f 0b 4c 8b 74 24 08 e9 36 fe ff ff e8 40 6c 3a f8 0f 0b e9 3c ef ff ff e8 34 6c 3a f8 <0f> 0b e9 b8 f2 ff ff e8 68 ef 6b 00 44 89 e1 80 e1 07 80 c1 03 38 vkms_vblank_simulate: vblank timer overrun RSP: 0018:ffffc900000078c0 EFLAGS: 00010246 RAX: ffffffff893d5e5c RBX: ffff888029a28c80 RCX: ffff88807ad30000 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000007ae8 R08: ffff88807ad30000 R09: 0000000000000003 R10: 0000000000000007 R11: 0000000000000100 R12: ffff888023e43a00 R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff92000000f28 FS: 00007fe1a39be6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0e3acf16c0 CR3: 000000007ed70000 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:sk_peek_offset_bwd include/net/sock.h:647 [inline] RIP: 0010:sk_peek_offset_fwd include/net/sock.h:655 [inline] RIP: 0010:__unix_dgram_recvmsg+0x89d/0xd50 net/unix/af_unix.c:2385 Code: 00 00 00 48 8b 44 24 48 42 0f b6 04 20 84 c0 48 8b 54 24 18 0f 85 e8 03 00 00 8b 1a bf ff ff ff ff 89 de e8 f5 67 ef f8 85 db <0f> 89 14 02 00 00 e8 88 64 ef f8 49 8d 5f 38 48 89 d8 48 c1 e8 03 RSP: 0018:ffffc90003dd7760 EFLAGS: 00000286 RAX: ffffffff888865fb RBX: 00000000ffffffff RCX: ffff88807ad30000 RDX: 0000000000000002 RSI: 00000000ffffffff RDI: 00000000ffffffff RBP: ffffc90003dd78f0 R08: dffffc0000000000 R09: ffffed100538f40d R10: ffffed100538f40d R11: 1ffff1100538f40c R12: dffffc0000000000 R13: ffffc90003dd7d40 R14: 1ffff920007baefc R15: ffff88805e3fb8c0 ____sys_recvmsg+0x291/0x580 net/socket.c:-1 ___sys_recvmsg+0x1af/0x4f0 net/socket.c:2697 do_recvmmsg+0x344/0x7a0 net/socket.c:2791 __sys_recvmmsg net/socket.c:2870 [inline] __do_sys_recvmmsg net/socket.c:2893 [inline] __se_sys_recvmmsg net/socket.c:2886 [inline] __x64_sys_recvmmsg+0x18d/0x240 net/socket.c:2886 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: 0033:0x7fe1a5777fc9 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:00007fe1a39be038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007fe1a59cf090 RCX: 00007fe1a5777fc9 RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000004 RBP: 00007fe1a57faf91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fe1a59cf128 R14: 00007fe1a59cf090 R15: 00007fff14c66248 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 00 48 8b add %cl,-0x75(%rax) 5: 44 24 48 rex.R and $0x48,%al 8: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax d: 84 c0 test %al,%al f: 48 8b 54 24 18 mov 0x18(%rsp),%rdx 14: 0f 85 e8 03 00 00 jne 0x402 1a: 8b 1a mov (%rdx),%ebx 1c: bf ff ff ff ff mov $0xffffffff,%edi 21: 89 de mov %ebx,%esi 23: e8 f5 67 ef f8 call 0xf8ef681d 28: 85 db test %ebx,%ebx * 2a: 0f 89 14 02 00 00 jns 0x244 <-- trapping instruction 30: e8 88 64 ef f8 call 0xf8ef64bd 35: 49 8d 5f 38 lea 0x38(%r15),%rbx 39: 48 89 d8 mov %rbx,%rax 3c: 48 c1 e8 03 shr $0x3,%rax