------------[ cut here ]------------ skb_assert_len WARNING: CPU: 1 PID: 1327 at include/linux/skbuff.h:2720 skb_assert_len include/linux/skbuff.h:2720 [inline] WARNING: CPU: 1 PID: 1327 at include/linux/skbuff.h:2720 __dev_queue_xmit+0x1e1d/0x3780 net/core/dev.c:4462 Modules linked in: CPU: 1 UID: 0 PID: 1327 Comm: syz.3.429 Not tainted syzkaller #0 4d4a838cf2fc485b043991145ccf8426a0241c16 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:skb_assert_len include/linux/skbuff.h:2720 [inline] RIP: 0010:__dev_queue_xmit+0x1e1d/0x3780 net/core/dev.c:4462 Code: 00 00 00 fc ff df e9 ea e6 ff ff e8 bd ba 05 fd c6 05 e5 95 63 03 01 48 c7 c7 60 16 8b 86 48 c7 c6 15 62 19 87 e8 d3 92 82 fc <0f> 0b 80 3d ca 95 63 03 01 0f 84 af e3 ff ff e8 8f ba 05 fd c6 05 RSP: 0018:ffffc900102ef6a0 EFLAGS: 00010246 RAX: cbf4cf5729033f00 RBX: ffff88811d1547f0 RCX: 0000000000080000 RDX: ffffc90001e43000 RSI: 0000000000001a9b RDI: 0000000000001a9c RBP: ffffc900102ef980 R08: ffff8881f6f294d3 R09: 1ffff1103ede529a R10: dffffc0000000000 R11: ffffed103ede529b R12: 1ffff11023a2a8f2 R13: ffff88811d154780 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007f6b12c496c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007faef592aff8 CR3: 000000011957a000 CR4: 00000000003526b0 Call Trace: dev_queue_xmit include/linux/netdevice.h:3141 [inline] packet_xmit+0x76/0x360 net/packet/af_packet.c:276 tpacket_snd net/packet/af_packet.c:2938 [inline] packet_sendmsg+0x228b/0x56b0 net/packet/af_packet.c:3165 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] __sys_sendto+0x68a/0x700 net/socket.c:2216 __do_sys_sendto net/socket.c:2228 [inline] __se_sys_sendto net/socket.c:2224 [inline] __x64_sys_sendto+0xe9/0x100 net/socket.c:2224 x64_sys_call+0x2c2c/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:45 do_syscall_x64 arch/x86/entry/common.c:47 [inline] do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78 entry_SYSCALL_64_after_hwframe+0x76/0x7e RIP: 0033:0x7f6b11d9e0d9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6b12c49028 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f6b12025fa0 RCX: 00007f6b11d9e0d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007f6b11e35024 R08: 0000200000000000 R09: 0000000000000014 R10: 0000000004000010 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f6b12026038 R14: 00007f6b12025fa0 R15: 00007ffc49072978 ---[ end trace 0000000000000000 ]--- skb len=0 headroom=144 headlen=0 tailroom=240 mac=(144,0) mac_len=0 net=(144,-1) trans=-1 shinfo(txflags=0 nr_frags=0 gso(size=0 type=0 segs=0)) csum(0x0 start=0 offset=0 ip_summed=0 complete_sw=0 valid=0 level=0) hash(0x0 sw=0 l4=0) proto=0x0010 pkttype=0 iif=0 priority=0x0 mark=0x0 alloc_cpu=1 vlan_all=0x0 encapsulation=0 inner(proto=0x0000, mac=0, net=0, trans=0) dev name=wg0 feat=0x00000106401d4829 sk family=17 type=2 proto=0