netlink: 44 bytes leftover after parsing attributes in process `syz.0.17'. ------------[ cut here ]------------ memcpy: detected field-spanning write (size 32) of single field "&new->sel" at net/sched/cls_u32.c:855 (size 16) WARNING: CPU: 1 PID: 5913 at net/sched/cls_u32.c:855 u32_init_knode net/sched/cls_u32.c:855 [inline] WARNING: CPU: 1 PID: 5913 at net/sched/cls_u32.c:855 u32_change+0x1c5a/0x24f0 net/sched/cls_u32.c:921 Modules linked in: CPU: 1 PID: 5913 Comm: syz.0.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:u32_init_knode net/sched/cls_u32.c:855 [inline] RIP: 0010:u32_change+0x1c5a/0x24f0 net/sched/cls_u32.c:921 Code: f8 eb 59 e8 a8 a0 d9 f8 c6 05 51 12 c8 05 01 b9 10 00 00 00 48 c7 c7 e0 40 c7 8b 4c 89 f6 48 c7 c2 60 41 c7 8b e8 16 62 a3 f8 <0f> 0b e9 86 f0 ff ff e8 7a a0 d9 f8 eb 24 e8 73 a0 d9 f8 c6 05 f3 RSP: 0018:ffffc9000470ed40 EFLAGS: 00010246 RAX: 296cc7866f63aa00 RBX: ffff888061a55400 RCX: ffff888076abbc00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 RBP: ffffc9000470eef8 R08: ffffc9000470e947 R09: 1ffff920008e1d28 R10: dffffc0000000000 R11: fffff520008e1d29 R12: ffff888061a55800 R13: ffff888061a558e8 R14: 0000000000000020 R15: ffff88807d2dd7c0 FS: 0000555584078500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b33d24008 CR3: 000000007556b000 CR4: 00000000003506e0 Call Trace: tc_new_tfilter+0xe4f/0x1640 net/sched/cls_api.c:2347 rtnetlink_rcv_msg+0x8b8/0xfa0 net/core/rtnetlink.c:6463 netlink_rcv_skb+0x241/0x4d0 net/netlink/af_netlink.c:2545 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline] netlink_unicast+0x751/0x8d0 net/netlink/af_netlink.c:1346 netlink_sendmsg+0x8d0/0xbf0 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x5ba/0x960 net/socket.c:2594 ___sys_sendmsg+0x2a6/0x360 net/socket.c:2648 __sys_sendmmsg+0x2ca/0x510 net/socket.c:2734 __do_sys_sendmmsg net/socket.c:2763 [inline] __se_sys_sendmmsg net/socket.c:2760 [inline] __x64_sys_sendmmsg+0xa0/0xb0 net/socket.c:2760 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f31d619c629 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:00007ffef122a488 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f31d6415fa0 RCX: 00007f31d619c629 RDX: 04000000000001f2 RSI: 0000200000000000 RDI: 0000000000000004 RBP: 00007f31d6232b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f31d6415fac R14: 00007f31d6415fa0 R15: 00007f31d6415fa0