------------[ cut here ]------------ WARNING: CPU: 0 PID: 3497 at include/linux/skbuff.h:2723 pskb_may_pull_reason include/linux/skbuff.h:2723 [inline] WARNING: CPU: 0 PID: 3497 at include/linux/skbuff.h:2723 pskb_may_pull include/linux/skbuff.h:2739 [inline] WARNING: CPU: 0 PID: 3497 at include/linux/skbuff.h:2723 mpls_gso_segment+0x1ce/0x230 net/mpls/mpls_gso.c:34 Modules linked in: CPU: 0 PID: 3497 Comm: syz-executor.0 Not tainted 6.8.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 RIP: 0010:pskb_may_pull_reason include/linux/skbuff.h:2723 [inline] RIP: 0010:pskb_may_pull include/linux/skbuff.h:2739 [inline] RIP: 0010:mpls_gso_segment+0x1ce/0x230 net/mpls/mpls_gso.c:34 Code: 89 83 b6 00 00 00 01 e8 66 89 83 b4 00 00 00 66 89 6b 78 4c 89 f0 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc 90 <0f> 0b 90 e9 93 fe ff ff 44 39 f9 72 dc 44 89 fe 29 c6 48 89 df e8 RSP: 0018:ffffc90001e63a38 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff88810b6ea200 RCX: ffffffff842fe6e8 RDX: 4eba3b788ae06066 RSI: 0000000000000001 RDI: ffff88810b6ea200 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: ffffffff82c96970 R12: 0000000000000001 R13: 000000000000006c R14: ffffffffffffffea R15: ffffffffffffff94 FS: 00007f720818b6c0(0000) GS:ffff88813bc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020010000 CR3: 000000010c226000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skb_mac_gso_segment+0xcb/0x190 net/core/gso.c:53 nsh_gso_segment+0x114/0x250 net/nsh/nsh.c:108 skb_mac_gso_segment+0xcb/0x190 net/core/gso.c:53 __skb_gso_segment+0xd5/0x120 net/core/gso.c:124 skb_gso_segment include/net/gso.h:83 [inline] validate_xmit_skb+0xb8/0x330 net/core/dev.c:3611 validate_xmit_skb_list+0x43/0x70 net/core/dev.c:3661 sch_direct_xmit+0x61/0x270 net/sched/sch_generic.c:327 __dev_xmit_skb net/core/dev.c:3759 [inline] __dev_queue_xmit+0x749/0xdc0 net/core/dev.c:4300 packet_snd net/packet/af_packet.c:3081 [inline] packet_sendmsg+0x12a2/0x16f0 net/packet/af_packet.c:3113 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg+0x8e/0xb0 net/socket.c:745 __sys_sendto+0x23c/0x290 net/socket.c:2191 __do_sys_sendto net/socket.c:2203 [inline] __se_sys_sendto net/socket.c:2199 [inline] __x64_sys_sendto+0x21/0x30 net/socket.c:2199 do_syscall_64+0xe6/0x230 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7f720747dda9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f720818b0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f72075abf80 RCX: 00007f720747dda9 RDX: 000000000000ff88 RSI: 0000000020000180 RDI: 0000000000000004 RBP: 00007f72074ca47a R08: 0000000020000140 R09: 0000000000000014 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f72075abf80 R15: 00007ffe35a36ef8