netlink: 12 bytes leftover after parsing attributes in process `syz.0.12842'. ------------[ cut here ]------------ WARNING: net/mac80211/driver-ops.c:473 at drv_link_info_changed+0x13c/0x860 net/mac80211/driver-ops.c:468, CPU#0: syz.0.12842/21853 Modules linked in: CPU: 0 UID: 0 PID: 21853 Comm: syz.0.12842 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:drv_link_info_changed+0x13c/0x860 net/mac80211/driver-ops.c:468 Code: 83 fb 01 75 1f e8 64 9b f9 f6 eb 32 e8 5d 9b f9 f6 eb 2b 83 fb 03 74 21 83 fb 05 75 07 e8 4c 9b f9 f6 eb 1a e8 45 9b f9 f6 90 <0f> 0b 90 e9 be 01 00 00 e8 37 9b f9 f6 eb 05 e8 30 9b f9 f6 49 8d RSP: 0018:ffffc90004d2f050 EFLAGS: 00010287 RAX: ffffffff8ac75c7b RBX: 0000000080000000 RCX: 0000000000080000 RDX: ffffc9001effd000 RSI: 0000000000003521 RDI: 0000000000003522 RBP: ffff888075c88e80 R08: ffff888025b05b80 R09: 0000000000000004 R10: 0000000000000005 R11: 0000000000000002 R12: ffff888067da0d80 R13: ffff888067da2ab8 R14: 0000000000000200 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888125e1f000(0063) knlGS:00000000f545cb40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f541c528 CR3: 0000000078a98000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000000e DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: ieee80211_offchannel_stop_vifs+0x249/0x560 net/mac80211/offchannel.c:122 ieee80211_start_sw_scan net/mac80211/scan.c:578 [inline] __ieee80211_start_scan+0x19e9/0x1d30 net/mac80211/scan.c:877 rdev_scan+0x147/0x2e0 net/wireless/rdev-ops.h:467 nl80211_trigger_scan+0x1aa1/0x1f50 net/wireless/nl80211.c:10597 genl_family_rcv_msg_doit+0x215/0x300 net/netlink/genetlink.c:1115 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0x60e/0x790 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2550 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x82f/0x9e0 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg+0x21c/0x270 net/socket.c:742 ____sys_sendmsg+0x505/0x820 net/socket.c:2592 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2646 __sys_sendmsg+0x164/0x220 net/socket.c:2678 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline] __do_fast_syscall_32+0x1dc/0x560 arch/x86/entry/syscall_32.c:307 do_fast_syscall_32+0x34/0x80 arch/x86/entry/syscall_32.c:332 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf708d539 Code: 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f545c55c EFLAGS: 00000206 ORIG_RAX: 0000000000000172 RAX: ffffffffffffffda RBX: 000000000000000a RCX: 0000000080000740 RDX: 0000000024048000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess): 0: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 4: 10 07 adc %al,(%rdi) 6: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi a: 10 08 adc %cl,(%rax) c: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 20: 00 51 52 add %dl,0x52(%rcx) 23: 55 push %rbp 24: 89 e5 mov %esp,%ebp 26: 0f 34 sysenter 28: cd 80 int $0x80 * 2a: 5d pop %rbp <-- trapping instruction 2b: 5a pop %rdx 2c: 59 pop %rcx 2d: c3 ret 2e: 90 nop 2f: 90 nop 30: 90 nop 31: 90 nop 32: 90 nop 33: 90 nop 34: 90 nop 35: 90 nop 36: 90 nop 37: 90 nop 38: 90 nop 39: 90 nop 3a: 90 nop 3b: 90 nop 3c: 90 nop 3d: 90 nop 3e: 90 nop 3f: 90 nop