skb linear:   00000120: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
------------[ cut here ]------------
gretap0: caps=(0x00000006401d7869, 0x0000000000000000)
WARNING: CPU: 1 PID: 12880 at net/core/dev.c:3262 skb_warn_bad_offload+0x118/0x240 net/core/dev.c:3262
Modules linked in:
CPU: 1 PID: 12880 Comm: syz-executor.2 Not tainted 6.6.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
RIP: 0010:skb_warn_bad_offload+0x118/0x240 net/core/dev.c:3262
Code: 70 03 00 00 e8 09 78 54 f9 48 81 c5 f0 00 00 00 e8 fd 77 54 f9 48 89 d9 48 89 ea 4c 89 e6 48 c7 c7 e0 1c a3 8b e8 c8 9c 1a f9 <0f> 0b 5b 5d 41 5c 41 5d e9 db 77 54 f9 e8 d6 77 54 f9 48 89 ea 49
RSP: 0018:ffffc9000ad476a0 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff88808307c370 RCX: ffffc9000b077000
RDX: 0000000000040000 RSI: ffffffff814df0c6 RDI: 0000000000000001
RBP: ffff88803fbda0f0 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff88803fbda000
R13: 0000000000000067 R14: 000000000000000e R15: 0000000000000000
FS:  00007f6a9c40c6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020002000 CR3: 000000003bfa0000 CR4: 0000000000350ee0
Call Trace:
 <TASK>
 __skb_gso_segment+0x3ef/0x710 net/core/gso.c:127
 skb_gso_segment include/net/gso.h:83 [inline]
 validate_xmit_skb+0x3a5/0xf10 net/core/dev.c:3629
 validate_xmit_skb_list+0xc1/0x130 net/core/dev.c:3679
 sch_direct_xmit+0x3e6/0xc20 net/sched/sch_generic.c:327
 __dev_xmit_skb net/core/dev.c:3775 [inline]
 __dev_queue_xmit+0x126e/0x3d60 net/core/dev.c:4310
 dev_queue_xmit include/linux/netdevice.h:3082 [inline]
 packet_xmit+0x257/0x380 net/packet/af_packet.c:276
 packet_snd net/packet/af_packet.c:3087 [inline]
 packet_sendmsg+0x24d9/0x5580 net/packet/af_packet.c:3119
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg+0xd5/0x180 net/socket.c:745
 __sys_sendto+0x255/0x340 net/socket.c:2194
 __do_sys_sendto net/socket.c:2206 [inline]
 __se_sys_sendto net/socket.c:2202 [inline]
 __x64_sys_sendto+0xe0/0x1b0 net/socket.c:2202
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f6a9b67cae9
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:00007f6a9c40c0c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f6a9b79bf80 RCX: 00007f6a9b67cae9
RDX: 0000000000002378 RSI: 0000000020000080 RDI: 0000000000000003
RBP: 00007f6a9b6c847a R08: 0000000000000000 R09: 00000000000002ff
R10: 0000000004000002 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f6a9b79bf80 R15: 00007fffc280fba8
 </TASK>