------------[ 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: 0 PID: 6005 at net/sched/cls_u32.c:853 u32_init_knode net/sched/cls_u32.c:853 [inline] WARNING: CPU: 0 PID: 6005 at net/sched/cls_u32.c:853 u32_change+0x1da2/0x2740 net/sched/cls_u32.c:919 Modules linked in: CPU: 0 PID: 6005 Comm: syz.3.530 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:853 [inline] RIP: 0010:u32_change+0x1da2/0x2740 net/sched/cls_u32.c:919 Code: f9 eb 59 e8 a0 09 19 f9 c6 05 a2 25 a3 05 01 b9 10 00 00 00 48 c7 c7 60 10 8f 8b 4c 89 fe 48 c7 c2 e0 10 8f 8b e8 5e 90 e4 f8 <0f> 0b e9 ee ee ff ff e8 72 09 19 f9 eb 24 e8 6b 09 19 f9 c6 05 fb RSP: 0018:ffffc9001d1f6e60 EFLAGS: 00010246 RAX: e1ef2afba9c43e00 RBX: ffff88807bc9e800 RCX: 0000000000080000 RDX: ffffc9000e3f7000 RSI: 000000000000ab65 RDI: 000000000000ab66 RBP: ffffc9001d1f6ff8 R08: ffffc9001d1f6ae7 R09: 1ffff92003a3ed5c R10: dffffc0000000000 R11: fffff52003a3ed5d R12: ffff8880791838e0 R13: dffffc0000000000 R14: 0000000000000001 R15: 0000000000000020 FS: 00007fc4a33106c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2ff23ffc CR3: 000000001bffc000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: tc_new_tfilter+0x1368/0x1970 net/sched/cls_api.c:2202 rtnetlink_rcv_msg+0x8b2/0xfb0 net/core/rtnetlink.c:6157 netlink_rcv_skb+0x1ef/0x440 net/netlink/af_netlink.c:2516 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x7ad/0x920 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x8ad/0xbd0 net/netlink/af_netlink.c:1877 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:730 [inline] ____sys_sendmsg+0x5ed/0x9a0 net/socket.c:2519 ___sys_sendmsg+0x2a2/0x360 net/socket.c:2573 __sys_sendmmsg+0x2c3/0x510 net/socket.c:2659 __do_sys_sendmmsg net/socket.c:2688 [inline] __se_sys_sendmmsg net/socket.c:2685 [inline] __x64_sys_sendmmsg+0x9c/0xb0 net/socket.c:2685 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: 0033:0x7fc4a239e159 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:00007fc4a3310028 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007fc4a2625fa0 RCX: 00007fc4a239e159 RDX: 04000000000001f2 RSI: 0000200000000000 RDI: 0000000000000005 RBP: 00007fc4a243506b R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fc4a2626038 R14: 00007fc4a2625fa0 R15: 00007ffcdf382878