skb frag: 000000c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 skb frag: 000000d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 skb frag: 000000e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ------------[ cut here ]------------ offset (584) >= skb_headlen() (64) WARNING: CPU: 0 PID: 10667 at net/core/dev.c:3295 skb_checksum_help+0x627/0x750 net/core/dev.c:3294 Modules linked in: CPU: 0 PID: 10667 Comm: syz-executor.3 Not tainted 6.7.0-rc4-syzkaller-00009-gbee0e7762ad2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 RIP: 0010:skb_checksum_help+0x627/0x750 net/core/dev.c:3294 Code: df 48 8b 4c 24 18 0f b6 04 01 84 c0 0f 85 d4 00 00 00 48 8b 04 24 2b 18 48 c7 c7 40 a6 5c 8c 44 89 f6 89 da e8 0a fa 58 f8 90 <0f> 0b 90 90 bb ea ff ff ff e9 59 fd ff ff e8 36 1c 93 f8 c6 05 dd RSP: 0018:ffffc900057f72a8 EFLAGS: 00010246 RAX: 94a24df7cb0a3900 RBX: 0000000000000040 RCX: ffff888091c2d940 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000448 R08: ffffffff81545a92 R09: 1ffffffff21bae84 R10: dffffc0000000000 R11: fffffbfff21bae85 R12: 00000000000002f8 R13: ffff888025e82a70 R14: 0000000000000248 R15: ffff888025e82a00 FS: 00007efd4514c6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7426f75198 CR3: 0000000020a17000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: netem_enqueue+0x281f/0x3850 net/sched/sch_netem.c:519 qdisc_enqueue include/net/sch_generic.h:844 [inline] netem_enqueue+0x2635/0x3850 net/sched/sch_netem.c:616 netem_enqueue+0x12c3/0x3850 net/sched/sch_netem.c:492 dev_qdisc_enqueue+0x47/0x250 net/core/dev.c:3740 __dev_xmit_skb net/core/dev.c:3829 [inline] __dev_queue_xmit+0xdde/0x3a40 net/core/dev.c:4312 packet_snd net/packet/af_packet.c:3087 [inline] packet_sendmsg+0x47ea/0x6260 net/packet/af_packet.c:3119 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] __sys_sendto+0x484/0x640 net/socket.c:2190 __do_sys_sendto net/socket.c:2202 [inline] __se_sys_sendto net/socket.c:2198 [inline] __x64_sys_sendto+0xde/0xf0 net/socket.c:2198 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x45/0x110 arch/x86/entry/common.c:82 entry_SYSCALL_64_after_hwframe+0x63/0x6b RIP: 0033:0x7efd4447cae9 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:00007efd4514c0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007efd4459bf80 RCX: 00007efd4447cae9 RDX: 000000000000fc13 RSI: 0000000020000280 RDI: 0000000000000006 RBP: 00007efd444c847a R08: 0000000000000000 R09: 000000000000002f R10: 0000000000000800 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007efd4459bf80 R15: 00007ffe5b400988