netlink: 36 bytes leftover after parsing attributes in process `syz.3.287'.
------------[ cut here ]------------
memcpy: detected field-spanning write (size 32) of single field "&new->sel" at net/sched/cls_u32.c:855 (size 16)
WARNING: net/sched/cls_u32.c:855 at u32_init_knode net/sched/cls_u32.c:855 [inline], CPU#1: syz.3.287/6660
WARNING: net/sched/cls_u32.c:855 at u32_change+0x1da0/0x2720 net/sched/cls_u32.c:921, CPU#1: syz.3.287/6660
Modules linked in:
CPU: 1 UID: 0 PID: 6660 Comm: syz.3.287 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:u32_init_knode net/sched/cls_u32.c:855 [inline]
RIP: 0010:u32_change+0x1daf/0x2720 net/sched/cls_u32.c:921
Code: 3d 1c 87 43 06 01 75 33 e8 ce ab 0d f8 eb 50 e8 c7 ab 0d f8 48 8d 3d 60 b7 68 06 b9 10 00 00 00 4c 89 f6 48 c7 c2 a0 80 e1 8c <67> 48 0f b9 3a e9 af ee ff ff e8 a2 ab 0d f8 eb 24 e8 9b ab 0d f8
RSP: 0000:ffffc9001d01ef80 EFLAGS: 00010287
RAX: ffffffff89b7f419 RBX: ffff8880709b5800 RCX: 0000000000000010
RDX: ffffffff8ce180a0 RSI: 0000000000000020 RDI: ffffffff9020ab80
RBP: ffffc9001d01f138 R08: 0000000000000dc0 R09: 00000000ffffffff
R10: dffffc0000000000 R11: fffffbfff2023337 R12: ffff88804d1704e8
R13: 0000000000000001 R14: 0000000000000020 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff888125560000(0063) knlGS:00000000f5436b40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f725c08e CR3: 000000001e6b8000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 tc_new_tfilter+0xff8/0x1780 net/sched/cls_api.c:2430
 rtnetlink_rcv_msg+0x7d5/0xbe0 net/core/rtnetlink.c:6958
 netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2550
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x80f/0x9b0 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1894
 sock_sendmsg_nosec net/socket.c:727 [inline]
 __sock_sendmsg net/socket.c:742 [inline]
 ____sys_sendmsg+0x972/0x9f0 net/socket.c:2592
 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2646
 __sys_sendmmsg+0x2e7/0x4e0 net/socket.c:2728
 __compat_sys_sendmmsg net/compat.c:360 [inline]
 __do_compat_sys_sendmmsg net/compat.c:367 [inline]
 __se_compat_sys_sendmmsg net/compat.c:364 [inline]
 __ia32_compat_sys_sendmmsg+0xa2/0xc0 net/compat.c:364
 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
 __do_fast_syscall_32+0x20d/0x640 arch/x86/entry/syscall_32.c:307
 do_fast_syscall_32+0x33/0x70 arch/x86/entry/syscall_32.c:332
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf7f78f6c
Code: 90 85 d2 74 0a 89 ce 81 e6 ff 0f 00 00 89 32 85 c0 74 05 c1 e9 0c 89 08 31 c0 5e 5d c3 90 0f 1f 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 58 b8
RSP: 002b:00000000f543650c EFLAGS: 00000206 ORIG_RAX: 0000000000000159
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000080000000
RDX: 00000000000001f2 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
----------------
Code disassembly (best guess):
   0:	3d 1c 87 43 06       	cmp    $0x643871c,%eax
   5:	01 75 33             	add    %esi,0x33(%rbp)
   8:	e8 ce ab 0d f8       	call   0xf80dabdb
   d:	eb 50                	jmp    0x5f
   f:	e8 c7 ab 0d f8       	call   0xf80dabdb
  14:	48 8d 3d 60 b7 68 06 	lea    0x668b760(%rip),%rdi        # 0x668b77b
  1b:	b9 10 00 00 00       	mov    $0x10,%ecx
  20:	4c 89 f6             	mov    %r14,%rsi
  23:	48 c7 c2 a0 80 e1 8c 	mov    $0xffffffff8ce180a0,%rdx
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	e9 af ee ff ff       	jmp    0xffffeee3
  34:	e8 a2 ab 0d f8       	call   0xf80dabdb
  39:	eb 24                	jmp    0x5f
  3b:	e8 9b ab 0d f8       	call   0xf80dabdb