netlink: 24 bytes leftover after parsing attributes in process `syz.5.3772'. ------------[ 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: 16737 at net/sched/cls_u32.c:855 u32_init_knode net/sched/cls_u32.c:855 [inline] WARNING: CPU: 1 PID: 16737 at net/sched/cls_u32.c:855 u32_change+0x1ce8/0x2690 net/sched/cls_u32.c:921 Modules linked in: CPU: 1 PID: 16737 Comm: syz.5.3772 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 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 aa 7c d2 f8 c6 05 89 8a c2 05 01 b9 10 00 00 00 48 c7 c7 60 06 c8 8b 4c 89 fe 48 c7 c2 e0 06 c8 8b e8 88 55 9c f8 <0f> 0b e9 1f f0 ff ff e8 7c 7c d2 f8 eb 24 e8 75 7c d2 f8 c6 05 16 RSP: 0018:ffffc90003346d60 EFLAGS: 00010246 RAX: 0f31b9183de78200 RBX: ffff88805ca6d400 RCX: 0000000000080000 RDX: ffffc900162b5000 RSI: 0000000000008d15 RDI: 0000000000008d16 RBP: ffffc90003346ef8 R08: ffffc90003346967 R09: 1ffff92000668d2c R10: dffffc0000000000 R11: fffff52000668d2d R12: 1ffff92000668dbc R13: ffff88805ca6c0e8 R14: ffff88807a6d8000 R15: 0000000000000020 FS: 00007fb1e763e6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c2d1d91 CR3: 0000000062751000 CR4: 00000000003526e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000001800 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: tc_new_tfilter+0x1109/0x1820 net/sched/cls_api.c:2354 rtnetlink_rcv_msg+0x892/0xf90 net/core/rtnetlink.c:6467 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: 0033:0x7fb1e679de59 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:00007fb1e763e028 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007fb1e6a25fa0 RCX: 00007fb1e679de59 RDX: 04000000000001f2 RSI: 0000200000000000 RDI: 0000000000000004 RBP: 00007fb1e6833e6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fb1e6a26038 R14: 00007fb1e6a25fa0 R15: 00007fff594c7d18