netlink: 44 bytes leftover after parsing attributes in process `syz.4.203'. ------------[ 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: 6675 at net/sched/cls_u32.c:855 u32_init_knode net/sched/cls_u32.c:855 [inline] WARNING: CPU: 1 PID: 6675 at net/sched/cls_u32.c:855 u32_change+0x1ce8/0x2690 net/sched/cls_u32.c:921 Modules linked in: CPU: 1 PID: 6675 Comm: syz.4.203 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:u32_init_knode net/sched/cls_u32.c:855 [inline] RIP: 0010:u32_change+0x1ce8/0x2690 net/sched/cls_u32.c:921 Code: f8 eb 59 e8 ea af d1 f8 c6 05 f2 45 c1 05 01 b9 10 00 00 00 48 c7 c7 e0 21 c8 8b 4c 89 fe 48 c7 c2 60 22 c8 8b e8 d8 7f 9b f8 <0f> 0b e9 1f f0 ff ff e8 bc af d1 f8 eb 24 e8 b5 af d1 f8 c6 05 79 RSP: 0018:ffffc90004566d60 EFLAGS: 00010246 RAX: bbe992a69bb6ed00 RBX: ffff88805d335000 RCX: 0000000000080000 RDX: ffffc9000c661000 RSI: 0000000000000cff RDI: 0000000000000d00 RBP: ffffc90004566ef8 R08: ffff8880b8f28c53 R09: 1ffff110171e518a R10: dffffc0000000000 R11: ffffed10171e518b R12: 1ffff920008acdbc R13: ffff88805dbf0ce8 R14: ffff88802e923b80 R15: 0000000000000020 FS: 00007fd9bcc836c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b3361cff8 CR3: 000000001c3bb000 CR4: 00000000003506e0 Call Trace: tc_new_tfilter+0x1109/0x1820 net/sched/cls_api.c:2354 rtnetlink_rcv_msg+0x892/0xf90 net/core/rtnetlink.c:6475 netlink_rcv_skb+0x235/0x4c0 net/netlink/af_netlink.c:2550 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline] netlink_unicast+0x7b1/0x930 net/netlink/af_netlink.c:1346 netlink_sendmsg+0x8d0/0xbf0 net/netlink/af_netlink.c:1899 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x61b/0x980 net/socket.c:2595 ___sys_sendmsg+0x2a6/0x360 net/socket.c:2649 __sys_sendmmsg+0x2ca/0x510 net/socket.c:2735 __do_sys_sendmmsg net/socket.c:2764 [inline] __se_sys_sendmmsg net/socket.c:2761 [inline] __x64_sys_sendmmsg+0xa0/0xb0 net/socket.c:2761 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fd9bbd9e019 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:00007fd9bcc83028 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007fd9bc025fa0 RCX: 00007fd9bbd9e019 RDX: 04000000000001f2 RSI: 0000200000000000 RDI: 0000000000000004 RBP: 00007fd9bbe3500c R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fd9bc026038 R14: 00007fd9bc025fa0 R15: 00007ffeab557098