netlink: 'syz.2.511': attribute type 3 has an invalid length. netlink: 24 bytes leftover after parsing attributes in process `syz.2.511'. ------------[ cut here ]------------ memcpy: detected field-spanning write (size 32) of single field "&new->sel" at net/sched/cls_u32.c:869 (size 16) WARNING: CPU: 0 PID: 5822 at net/sched/cls_u32.c:869 u32_init_knode net/sched/cls_u32.c:869 [inline] WARNING: CPU: 0 PID: 5822 at net/sched/cls_u32.c:869 u32_change+0x1ef8/0x2900 net/sched/cls_u32.c:935 Modules linked in: CPU: 0 PID: 5822 Comm: syz.2.511 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026 RIP: 0010:u32_init_knode net/sched/cls_u32.c:869 [inline] RIP: 0010:u32_change+0x1ef8/0x2900 net/sched/cls_u32.c:935 Code: 00 00 00 e8 6a 61 11 f9 c6 05 b0 84 9d 06 01 b9 10 00 00 00 48 c7 c7 a0 38 b0 8b 4c 89 f6 48 c7 c2 20 39 b0 8b e8 88 d4 dc f8 <0f> 0b e9 eb ed ff ff e8 3c 61 11 f9 be 02 00 00 00 eb 0a e8 30 61 RSP: 0018:ffffc90004376e20 EFLAGS: 00010246 RAX: a744c5e2e164f700 RBX: ffff88807bbb7ee0 RCX: 0000000000080000 RDX: ffffc9000e319000 RSI: 000000000000b009 RDI: 000000000000b00a RBP: ffffc90004376ff8 R08: ffffc90004376aa7 R09: 1ffff9200086ed54 R10: dffffc0000000000 R11: fffff5200086ed55 R12: 1ffff9200086edd8 R13: dffffc0000000000 R14: 0000000000000020 R15: 0000000000000001 FS: 00007f34f778e6c0(0000) GS:ffff8880b8c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f34f69ecc40 CR3: 00000000245a3000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tc_new_tfilter+0x1368/0x1970 net/sched/cls_api.c:2202 rtnetlink_rcv_msg+0x8b2/0xfb0 net/core/rtnetlink.c:6157 netlink_rcv_skb+0x1ef/0x440 net/netlink/af_netlink.c:2516 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_sendmmsg+0x2c3/0x510 net/socket.c:2659 __do_sys_sendmmsg net/socket.c:2688 [inline] __se_sys_sendmmsg net/socket.c:2685 [inline] __x64_sys_sendmmsg+0x9c/0xb0 net/socket.c:2685 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: 0033:0x7f34f699f559 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:00007f34f778e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f34f6c25fa0 RCX: 00007f34f699f559 RDX: 04000000000001f2 RSI: 0000200000000000 RDI: 0000000000000006 RBP: 00007f34f6a36b20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f34f6c26038 R14: 00007f34f6c25fa0 R15: 00007ffd3416b088