skb linear: 000000f0: 00 00 00 00 00 00 0c 00 00 00 00 00 00 00 00 00 skb linear: 00000100: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 skb linear: 00000110: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 skb linear: 00000120: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ------------[ cut here ]------------ syz_tun: caps=(0x00002000000058c1, 0x0000000000000000) WARNING: CPU: 1 PID: 5263 at net/core/dev.c:3234 skb_warn_bad_offload+0x159/0x180 net/core/dev.c:3232 Modules linked in: CPU: 1 PID: 5263 Comm: syz-executor.1 Not tainted 6.2.0-rc6-syzkaller-00163-g66a87fff1a87 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 RIP: 0010:skb_warn_bad_offload+0x159/0x180 net/core/dev.c:3232 Code: 8d 9a 2e f9 49 8b 04 24 48 8d 88 70 03 00 00 48 85 c0 49 0f 44 ce 48 c7 c7 c0 05 26 8c 4c 89 fe 48 89 da 31 c0 e8 e7 1d 9e f8 <0f> 0b 5b 41 5c 41 5d 41 5e 41 5f c3 44 89 f1 80 e1 07 38 c1 0f 8c RSP: 0018:ffffc9000316f4d0 EFLAGS: 00010246 RAX: 8929f6d361cb8c00 RBX: ffff88802aaf80e8 RCX: 0000000000040000 RDX: ffffc90005291000 RSI: 000000000003ffff RDI: 0000000000040000 RBP: 0000000000000000 R08: ffffffff816f8e4d R09: fffff5200062de15 R10: fffff5200062de15 R11: 1ffff9200062de14 R12: ffff88807c25c018 R13: dffffc0000000000 R14: ffffffff8c2605a0 R15: ffff88802aaf8000 FS: 00007fafee193700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002000f000 CR3: 000000008346a000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __skb_gso_segment+0x39c/0x4a0 net/core/dev.c:3409 skb_gso_segment include/linux/netdevice.h:4809 [inline] netem_segment net/sched/sch_netem.c:418 [inline] netem_enqueue+0x1582/0x3680 net/sched/sch_netem.c:496 netem_enqueue+0x124c/0x3680 net/sched/sch_netem.c:483 dev_qdisc_enqueue net/core/dev.c:3778 [inline] __dev_xmit_skb net/core/dev.c:3867 [inline] __dev_queue_xmit+0xf14/0x3af0 net/core/dev.c:4215 packet_snd net/packet/af_packet.c:3073 [inline] packet_sendmsg+0x3404/0x4f40 net/packet/af_packet.c:3104 sock_sendmsg_nosec net/socket.c:714 [inline] sock_sendmsg net/socket.c:734 [inline] __sys_sendto+0x46d/0x5f0 net/socket.c:2117 __do_sys_sendto net/socket.c:2129 [inline] __se_sys_sendto net/socket.c:2125 [inline] __x64_sys_sendto+0xda/0xf0 net/socket.c:2125 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fafed48c0c9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fafee193168 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fafed5abf80 RCX: 00007fafed48c0c9 RDX: 000000000000fc13 RSI: 0000000020000280 RDI: 0000000000000003 RBP: 00007fafed4e7ae9 R08: 0000000000000000 R09: 000000000000002f R10: 0000000000000800 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff78fa3a8f R14: 00007fafee193300 R15: 0000000000022000