------------[ cut here ]------------ memcpy: detected field-spanning write (size 32) of single field "&new->sel" at net/sched/cls_u32.c:854 (size 16) WARNING: CPU: 0 PID: 15060 at net/sched/cls_u32.c:854 u32_init_knode net/sched/cls_u32.c:854 [inline] WARNING: CPU: 0 PID: 15060 at net/sched/cls_u32.c:854 u32_change+0x1dfc/0x27e0 net/sched/cls_u32.c:920 Modules linked in: CPU: 0 PID: 15060 Comm: syz.2.3122 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:854 [inline] RIP: 0010:u32_change+0x1dfc/0x27e0 net/sched/cls_u32.c:920 Code: f9 eb 59 e8 76 fc 1e f9 c6 05 5b fb a7 05 01 b9 10 00 00 00 48 c7 c7 a0 90 8e 8b 4c 89 fe 48 c7 c2 20 91 8e 8b e8 64 6d ea f8 <0f> 0b e9 ff ee ff ff e8 48 fc 1e f9 eb 24 e8 41 fc 1e f9 c6 05 d6 RSP: 0018:ffffc90003b1ee40 EFLAGS: 00010246 RAX: fd2744a692fa4800 RBX: ffff8880249b84e0 RCX: 0000000000080000 RDX: ffffc9001cc00000 RSI: 0000000000005c75 RDI: 0000000000005c76 RBP: ffffc90003b1eff8 R08: ffffc90003b1eac7 R09: 1ffff92000763d58 R10: dffffc0000000000 R11: fffff52000763d59 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff88807d158e00 R15: 0000000000000020 FS: 00007f3ec52b76c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f98faf7ee9c CR3: 0000000030bee000 CR4: 00000000003506f0 Call Trace: tc_new_tfilter+0xf29/0x1770 net/sched/cls_api.c:2187 rtnetlink_rcv_msg+0x8cc/0xfc0 net/core/rtnetlink.c:6141 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: 0033:0x7f3ec439c799 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:00007f3ec52b7028 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f3ec4615fa0 RCX: 00007f3ec439c799 RDX: 04000000000001f2 RSI: 0000200000000000 RDI: 0000000000000005 RBP: 00007f3ec4432c99 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f3ec4616038 R14: 00007f3ec4615fa0 R15: 00007ffc89d08a88