skb_panic(9)

📦 version 7.3.1, in nixpkgs unstable

💅 skb_panic — Kernel API Manual, but make it a group chat

okay bestie, welcome to the skb_panic(9) page ✨ this is a Kernel API Manual moment, and honestly it's a short one, so let's get into it 🎀

🌸 NAME 🌸

skb_panic — a private function, for out-of-line support 🫶 (yes it literally says "private", she's mysterious, she's lowkey, she's not for you directly iykyk 💅)

✨ SYNOPSIS ✨

void skb_panic (struct sk_buff *skb , unsigned int sz , void *addr ,
       const char msg[] );

that's the whole signature, no cap 🔥

🦋 ARGUMENTS 🦋

  • skb — the buffer 🧺
  • sz — the size 📏
  • addr — the address 📍
  • msg — this one's giving skb_over_panic or skb_under_panic 💀 (those are literally the only two vibes)

👑 DESCRIPTION 👑

So here's the tea ☕ skb_panic is the out-of-line support squad for skb_put and skb_push 🫶 she gets called via the wrapper skb_over_panic or skb_under_panic, like she's the main character and those two are her stylists 💅

The way she stays out of line is deliberate — it's to prevent kernel bloat 🙈✨ iconic behaviour honestly, she's keeping the kernel snatched.

And ngl, __builtin_return_address is not used here, because it is not always reliable 😭 so don't come for her about it, she has her reasons fr fr.

🌈 SEE ALSO 🌈

Kernel file ./net/core/skbuff.c — and then the whole extended friend group, in exactly this order, no skipping, we love a complete list 🍓:

like, that's the entire skb cinematic universe, ate and left no crumbs 💖

💀 reminder: skb_panic is private, so this is a backstage-pass situation, not a "call her from your driver" situation, bestie 🙈

and that's the page!! huge shoutout to ./net/core for shipping this one in October 2026, version skb_panic(9) 🧚💜 mwah, see u in the next manpage 🫶✨

📦 where this page comes from