------------[ cut here ]------------
skb_assert_len
WARNING: CPU: 0 PID: 1807 at include/linux/skbuff.h:2720 skb_assert_len include/linux/skbuff.h:2720 [inline]
WARNING: CPU: 0 PID: 1807 at include/linux/skbuff.h:2720 __dev_queue_xmit+0x1e1d/0x3780 net/core/dev.c:4462
Modules linked in:
CPU: 0 UID: 0 PID: 1807 Comm: syz.6.423 Not tainted syzkaller #0 c4896d72d1fb51cdc6291d08376a37fd8080d7bb
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 ed b4 05 fd c6 05 55 90 63 03 01 48 c7 c7 e0 16 8b 86 48 c7 c6 81 62 19 87 e8 03 8d 82 fc <0f> 0b 80 3d 3a 90 63 03 01 0f 84 af e3 ff ff e8 bf b4 05 fd c6 05
RSP: 0018:ffffc9000cb8f6a0 EFLAGS: 00010246
RAX: 47c1193b32a3ea00 RBX: ffff88812250c1b0 RCX: 0000000000080000
RDX: ffffc90002294000 RSI: 000000000000ddd5 RDI: 000000000000ddd6
RBP: ffffc9000cb8f980 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52001971e80 R12: 1ffff110244a182a
R13: ffff88812250c140 R14: 0000000000000000 R15: dffffc0000000000
FS:  00007f18e1a7d6c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c24b42c CR3: 000000011a4be000 CR4: 00000000003526b0
DR0: 0000000000000007 DR1: 000000affffffffd DR2: 4000000000010022
DR3: 0000000000000005 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 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: 0033:0x7f18e0b9e0d9
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:00007f18e1a7d028 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f18e0e25fa0 RCX: 00007f18e0b9e0d9
RDX: 0000000000000048 RSI: 0000200000000140 RDI: 0000000000000004
RBP: 00007f18e0c35024 R08: 0000200000000100 R09: 0000000000000014
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f18e0e26038 R14: 00007f18e0e25fa0 R15: 00007ffe0485e588
 </TASK>
---[ end trace 0000000000000000 ]---
skb len=0 headroom=16 headlen=0 tailroom=368
mac=(16,0) mac_len=0 net=(16,-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=0x0019 pkttype=0 iif=0
priority=0x0 mark=0x0 alloc_cpu=0 vlan_all=0x0
encapsulation=0 inner(proto=0x0000, mac=0, net=0, trans=0)
dev name=vcan0 feat=0x0000000000004000
sk family=17 type=2 proto=0