netlink: 12 bytes leftover after parsing attributes in process `syz.4.1967'. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 12576 at net/mac80211/chan.c:2017 ieee80211_link_release_channel+0x150/0x180 net/mac80211/chan.c:2017 Modules linked in: CPU: 0 PID: 12576 Comm: syz.4.1967 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:ieee80211_link_release_channel+0x150/0x180 net/mac80211/chan.c:2017 Code: 7c 2d 00 00 74 08 48 89 df e8 0c 17 19 f8 bf 18 1e 00 00 48 03 3b 5b 41 5c 41 5d 41 5e 41 5f 5d e9 15 19 81 00 e8 30 d2 c7 f7 <0f> 0b eb c5 48 c7 c1 24 e9 20 8e 80 e1 07 80 c1 03 38 c1 0f 8c 51 RSP: 0018:ffffc90003327188 EFLAGS: 00010246 RAX: ffffffff89ba60b0 RBX: ffff88801d7915a8 RCX: 0000000000080000 RDX: ffffc9000e8a9000 RSI: 000000000007ffff RDI: 0000000000080000 RBP: 0000000000000000 R08: ffffffff8e20b46f R09: 1ffffffff1c4168d R10: dffffc0000000000 R11: fffffbfff1c4168e R12: ffff88801d792ab0 R13: 1ffff11003af22b5 R14: ffff88801d792228 R15: dffffc0000000000 FS: 00007f0e117e56c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f85e627bff8 CR3: 00000000539bf000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: unregister_netdevice_many_notify+0x13c4/0x1990 net/core/dev.c:11041 unregister_netdevice_many net/core/dev.c:11077 [inline] unregister_netdevice_queue+0x2e5/0x330 net/core/dev.c:10960 unregister_netdevice include/linux/netdevice.h:3077 [inline] _cfg80211_unregister_wdev+0x179/0x590 net/wireless/core.c:1213 ieee80211_if_remove+0x1ad/0x2b0 net/mac80211/iface.c:2344 ieee80211_del_iface+0x15/0x20 net/mac80211/cfg.c:202 rdev_del_virtual_intf net/wireless/rdev-ops.h:62 [inline] cfg80211_remove_virtual_intf+0x23a/0x440 net/wireless/util.c:2636 genl_family_rcv_msg_doit+0x22f/0x350 net/netlink/genetlink.c:756 genl_family_rcv_msg net/netlink/genetlink.c:833 [inline] genl_rcv_msg+0x601/0x790 net/netlink/genetlink.c:850 netlink_rcv_skb+0x1ef/0x440 net/netlink/af_netlink.c:2516 genl_rcv+0x24/0x40 net/netlink/genetlink.c:861 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x7ad/0x920 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x8ad/0xbd0 net/netlink/af_netlink.c:1877 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] ____sys_sendmsg+0x5ed/0x9a0 net/socket.c:2519 ___sys_sendmsg+0x2a2/0x360 net/socket.c:2573 __sys_sendmsg net/socket.c:2602 [inline] __do_sys_sendmsg net/socket.c:2611 [inline] __se_sys_sendmsg+0x1c3/0x2b0 net/socket.c:2609 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: 0033:0x7f0e1099e159 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:00007f0e117e5028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f0e10c25fa0 RCX: 00007f0e1099e159 RDX: 0000000000000848 RSI: 0000200000000200 RDI: 0000000000000005 RBP: 00007f0e10a3506b R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f0e10c26038 R14: 00007f0e10c25fa0 R15: 00007ffe1edfbd08