netlink: 8 bytes leftover after parsing attributes in process `syz.5.2072'. ------------[ cut here ]------------ WARNING: CPU: 1 PID: 16256 at kernel/kcov.c:872 kcov_remote_start+0xf7/0x6d0 kernel/kcov.c:872 Modules linked in: CPU: 1 UID: 0 PID: 16256 Comm: syz.5.2072 Tainted: G U syzkaller #0 PREEMPT(full) Tainted: [U]=USER Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:kcov_remote_start+0xf7/0x6d0 kernel/kcov.c:872 Code: 65 4c 8b 3d 73 e8 1a 12 4d 89 7c 24 28 8b 95 18 16 00 00 65 8b 05 79 e8 1a 12 a9 00 01 ff 00 75 53 81 e2 ff ff ff bf 74 4b 90 <0f> 0b 90 e8 a1 cc d5 09 44 8b 1d aa 58 2a 19 89 c0 48 03 1c c5 60 RSP: 0018:ffffc9000bfa6e00 EFLAGS: 00010002 RAX: 0000000080000200 RBX: ffffffff93d68948 RCX: 0000000000000001 RDX: 0000000000000002 RSI: ffffffff8de27e45 RDI: ffffffff8c162d80 RBP: ffff88807de79e00 R08: d5603c76ad9795c3 R09: 0000000000000036 R10: ffffc9000bfa6cb8 R11: 0000000000000000 R12: ffff8880b8528948 R13: 0000000000000200 R14: 0000000000000000 R15: ffff88807de79e00 FS: 00007fe8777656c0(0000) GS:ffff8881247c0000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000435000 CR3: 00000000313fe000 CR4: 00000000003526f0 Call Trace: kcov_remote_start_common include/linux/kcov.h:50 [inline] ieee80211_rx_list+0x45f/0x2980 net/mac80211/rx.c:5405 ieee80211_rx_napi+0xdc/0x410 net/mac80211/rx.c:5446 ieee80211_rx include/net/mac80211.h:5210 [inline] ieee80211_handle_queued_frames+0xd5/0x130 net/mac80211/main.c:453 ieee80211_stop_device+0x32/0x110 net/mac80211/util.c:1563 ieee80211_do_stop+0x1ac8/0x2520 net/mac80211/iface.c:721 ieee80211_stop+0x169/0x320 net/mac80211/iface.c:814 __dev_close_many+0x29b/0x760 net/core/dev.c:1755 netif_close_many+0x233/0x630 net/core/dev.c:1780 netif_close net/core/dev.c:1797 [inline] netif_close+0x17f/0x230 net/core/dev.c:1791 dev_close+0xaa/0x240 net/core/dev_api.c:220 nl80211_del_interface+0xec/0x190 net/wireless/nl80211.c:4667 genl_family_rcv_msg_doit+0x209/0x2f0 net/netlink/genetlink.c:1115 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0x55c/0x800 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x158/0x420 net/netlink/af_netlink.c:2552 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline] netlink_unicast+0x5a7/0x870 net/netlink/af_netlink.c:1346 netlink_sendmsg+0x8d1/0xdd0 net/netlink/af_netlink.c:1896 sock_sendmsg_nosec net/socket.c:714 [inline] __sock_sendmsg net/socket.c:729 [inline] ____sys_sendmsg+0xa98/0xc70 net/socket.c:2614 ___sys_sendmsg+0x134/0x1d0 net/socket.c:2668 __sys_sendmsg+0x16d/0x220 net/socket.c:2700 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x490 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fe87698ebe9 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:00007fe877765038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fe876bc5fa0 RCX: 00007fe87698ebe9 RDX: 0000000000000080 RSI: 0000200000000080 RDI: 0000000000000004 RBP: 00007fe876a11e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fe876bc6038 R14: 00007fe876bc5fa0 R15: 00007ffc116a2638