skbuff: skb_over_panic: text:ffff800086396248 len:428 put:172 head:ffff0000c9c5f740 data:ffff0000c9c5f740 tail:0x1ac end:0x180 dev:<NULL>
------------[ cut here ]------------
kernel BUG at net/core/skbuff.c:213!
Internal error: Oops - BUG: 00000000f2000800 [#1]  SMP
Modules linked in:
CPU: 1 UID: 0 PID: 6265 Comm: dhcpcd Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : skb_panic+0x140/0x144 net/core/skbuff.c:209
lr : skb_panic+0x140/0x144 net/core/skbuff.c:209
sp : ffff80009ee46c40
x29: ffff80009ee46c50 x28: dfff800000000000 x27: ffff0000c6346510
x26: 00000000000001ac x25: ffff0000c9c5f740 x24: ffff0000c9c5f740
x23: 00000000000001ac x22: 0000000000000180 x21: 00000000000000ac
x20: ffff80008edff2d3 x19: ffff800086396248 x18: 00000000ffffffff
x17: ffff800093599000 x16: ffff800082e5e68c x15: 0000000000000001
x14: 1ffff00013dc8d04 x13: 0000000000000000 x12: 0000000000000000
x11: ffff700013dc8d05 x10: 0000000000ff0100 x9 : e5e5a195c8c3ce00
x8 : e5e5a195c8c3ce00 x7 : ffff8000805761f8 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff8000807f1260
x2 : 0000000000000001 x1 : 0000000100000604 x0 : 0000000000000089
Call trace:
 skb_panic+0x140/0x144 net/core/skbuff.c:209 (P)
 skb_over_panic net/core/skbuff.c:218 [inline]
 skb_put+0x130/0x1c0 net/core/skbuff.c:2622
 skb_put_zero include/linux/skbuff.h:2788 [inline]
 cdc_ncm_ndp16 drivers/net/usb/cdc_ncm.c:1139 [inline]
 cdc_ncm_fill_tx_frame+0xc38/0x2f60 drivers/net/usb/cdc_ncm.c:1314
 cdc_ncm_tx_fixup+0xa8/0x114 drivers/net/usb/cdc_ncm.c:-1
 usbnet_start_xmit+0x108/0x217c drivers/net/usb/usbnet.c:1410
 __netdev_start_xmit include/linux/netdevice.h:5273 [inline]
 netdev_start_xmit include/linux/netdevice.h:5282 [inline]
 xmit_one net/core/dev.c:3853 [inline]
 dev_hard_start_xmit+0x298/0x890 net/core/dev.c:3869
 sch_direct_xmit+0x1fc/0x468 net/sched/sch_generic.c:347
 __dev_xmit_skb net/core/dev.c:4169 [inline]
 __dev_queue_xmit+0xf94/0x2a78 net/core/dev.c:4785
 dev_queue_xmit include/linux/netdevice.h:3381 [inline]
 lapbeth_data_transmit+0x1fc/0x2a8 drivers/net/wan/lapbether.c:260
 lapb_data_transmit+0x8c/0xb0 net/lapb/lapb_iface.c:447
 lapb_transmit_buffer+0x160/0x208 net/lapb/lapb_out.c:149
 lapb_send_control+0x21c/0x320 net/lapb/lapb_subr.c:251
 lapb_establish_data_link+0x94/0xec net/lapb/lapb_out.c:-1
 lapb_device_event+0x338/0x4d0 net/lapb/lapb_iface.c:-1
 notifier_call_chain+0x190/0x4cc kernel/notifier.c:85
 raw_notifier_call_chain+0x3c/0x50 kernel/notifier.c:453
 call_netdevice_notifiers_info net/core/dev.c:2230 [inline]
 call_netdevice_notifiers_extack net/core/dev.c:2268 [inline]
 call_netdevice_notifiers net/core/dev.c:2282 [inline]
 __dev_notify_flags+0x218/0x464 net/core/dev.c:-1
 netif_change_flags+0xd0/0x15c net/core/dev.c:9804
 dev_change_flags+0x10c/0x204 net/core/dev_api.c:68
 devinet_ioctl+0x8f0/0x1724 net/ipv4/devinet.c:1199
 inet_ioctl+0x2b0/0x3e0 net/ipv4/af_inet.c:1009
 sock_do_ioctl+0xf4/0x2b4 net/socket.c:1254
 sock_ioctl+0x57c/0x84c net/socket.c:1375
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl fs/ioctl.c:583 [inline]
 __arm64_sys_ioctl+0x14c/0x1c4 fs/ioctl.c:583
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0xe8/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x5c/0x26c arch/arm64/kernel/entry-common.c:724
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:743
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
Code: aa1903e6 aa1a03e7 a90023f6 97fc7589 (d4210000) 
---[ end trace 0000000000000000 ]---