------------[ cut here ]------------ memcpy: detected field-spanning write (size 80) of single field "&new->sel" at net/sched/cls_u32.c:832 (size 16) WARNING: CPU: 0 PID: 9340 at net/sched/cls_u32.c:832 u32_init_knode net/sched/cls_u32.c:832 [inline] WARNING: CPU: 0 PID: 9340 at net/sched/cls_u32.c:832 u32_change+0x229e/0x31b0 net/sched/cls_u32.c:898 Modules linked in: CPU: 1 PID: 9340 Comm: syz-executor.5 Not tainted 6.0.0-syzkaller-07994-ge8bc52cb8df8 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 RIP: 0010:u32_init_knode net/sched/cls_u32.c:832 [inline] RIP: 0010:u32_change+0x229e/0x31b0 net/sched/cls_u32.c:898 Code: e5 ff ff e8 f4 d3 ec f9 b9 10 00 00 00 4c 89 e6 48 c7 c2 40 ff fa 8a 48 c7 c7 a0 ff fa 8a c6 05 9e b1 3c 06 01 e8 ee 7a af 01 <0f> 0b e9 02 e5 ff ff e8 c6 d3 ec f9 4c 89 f7 41 bc f4 ff ff ff e8 RSP: 0018:ffffc900118af2d8 EFLAGS: 00010286 RAX: 0000000000000000 RBX: ffffc900118af5f8 RCX: 0000000000000000 RDX: 0000000000040000 RSI: ffffffff8160f738 RDI: fffff52002315e4d RBP: ffffc900118af478 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000000 R11: 203a7970636d656d R12: 0000000000000050 R13: ffff8880503f60e0 R14: ffff8880503f6000 R15: ffff88804dd7d800 FS: 0000000000000000(0000) GS:ffff8880b9b00000(0063) knlGS:00000000f7f82b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f6e63bb0 CR3: 0000000042319000 CR4: 00000000003526e0 Call Trace: tc_new_tfilter+0x937/0x21f0 net/sched/cls_api.c:2147 rtnetlink_rcv_msg+0x955/0xca0 net/core/rtnetlink.c:6082 netlink_rcv_skb+0x153/0x420 net/netlink/af_netlink.c:2540 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline] netlink_unicast+0x543/0x7f0 net/netlink/af_netlink.c:1345 netlink_sendmsg+0x917/0xe10 net/netlink/af_netlink.c:1921 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:734 ____sys_sendmsg+0x712/0x8c0 net/socket.c:2482 ___sys_sendmsg+0x110/0x1b0 net/socket.c:2536 __sys_sendmsg+0xf3/0x1c0 net/socket.c:2565 do_syscall_32_irqs_on arch/x86/entry/common.c:112 [inline] __do_fast_syscall_32+0x65/0xf0 arch/x86/entry/common.c:178 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:203 entry_SYSENTER_compat_after_hwframe+0x70/0x82 RIP: 0023:0xf7f87549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f7f825cc EFLAGS: 00000296 ORIG_RAX: 0000000000000172 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000340 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess): 0: 03 74 c0 01 add 0x1(%rax,%rax,8),%esi 4: 10 05 03 74 b8 01 adc %al,0x1b87403(%rip) # 0x1b8740d a: 10 06 adc %al,(%rsi) c: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 10: 10 07 adc %al,(%rdi) 12: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi 16: 10 08 adc %cl,(%rax) 18: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 1c: 00 00 add %al,(%rax) 1e: 00 00 add %al,(%rax) 20: 00 51 52 add %dl,0x52(%rcx) 23: 55 push %rbp 24: 89 e5 mov %esp,%ebp 26: 0f 34 sysenter 28: cd 80 int $0x80 * 2a: 5d pop %rbp <-- trapping instruction 2b: 5a pop %rdx 2c: 59 pop %rcx 2d: c3 retq 2e: 90 nop 2f: 90 nop 30: 90 nop 31: 90 nop 32: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi 39: 8d b4 26 00 00 00 00 lea 0x0(%rsi,%riz,1),%esi