------------[ cut here ]------------ memcpy: detected field-spanning write (size 32) of single field "&new->sel" at net/sched/cls_u32.c:853 (size 16) WARNING: CPU: 1 PID: 6216 at net/sched/cls_u32.c:853 u32_init_knode net/sched/cls_u32.c:853 [inline] WARNING: CPU: 1 PID: 6216 at net/sched/cls_u32.c:853 u32_change+0x1dfc/0x27e0 net/sched/cls_u32.c:919 Modules linked in: CPU: 1 PID: 6216 Comm: syz.3.510 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 RIP: 0010:u32_init_knode net/sched/cls_u32.c:853 [inline] RIP: 0010:u32_change+0x1dfc/0x27e0 net/sched/cls_u32.c:919 Code: f9 eb 59 e8 b6 88 1e f9 c6 05 31 97 a7 05 01 b9 10 00 00 00 48 c7 c7 a0 ac 8e 8b 4c 89 fe 48 c7 c2 20 ad 8e 8b e8 14 f7 e9 f8 <0f> 0b e9 ff ee ff ff e8 88 88 1e f9 eb 24 e8 81 88 1e f9 c6 05 a3 RSP: 0018:ffffc9000d4c6e40 EFLAGS: 00010246 RAX: ec0acf9ccaded200 RBX: ffff888078b70ae0 RCX: 0000000000080000 RDX: ffffc9000eae1000 RSI: 0000000000004063 RDI: 0000000000004064 RBP: ffffc9000d4c6ff8 R08: ffffc9000d4c6ac7 R09: 1ffff92001a98d58 R10: dffffc0000000000 R11: fffff52001a98d59 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff888078b72c00 R15: 0000000000000020 FS: 00007f1ea53ac6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c42bf60 CR3: 00000000203da000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tc_new_tfilter+0x1160/0x1900 net/sched/cls_api.c:2194 rtnetlink_rcv_msg+0x8cc/0xfc0 net/core/rtnetlink.c:6148 netlink_rcv_skb+0x1fb/0x450 net/netlink/af_netlink.c:2511 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x74d/0x8d0 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x8ad/0xbd0 net/netlink/af_netlink.c:1872 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] ____sys_sendmsg+0x5be/0x970 net/socket.c:2518 ___sys_sendmsg+0x2a2/0x360 net/socket.c:2572 __sys_sendmmsg+0x2c3/0x510 net/socket.c:2658 __do_sys_sendmmsg net/socket.c:2687 [inline] __se_sys_sendmmsg net/socket.c:2684 [inline] __x64_sys_sendmmsg+0x9c/0xb0 net/socket.c:2684 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: 0033:0x7f1ea459ce59 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:00007f1ea53ac028 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f1ea4815fa0 RCX: 00007f1ea459ce59 RDX: 04000000000001f2 RSI: 0000200000000000 RDI: 0000000000000005 RBP: 00007f1ea4632d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f1ea4816038 R14: 00007f1ea4815fa0 R15: 00007fffb98977a8