edac_mc_handle_error(9)

📦 version 7.3.1, in nixpkgs unstable

💅 edac_mc_handle_error(9) — from the Kernel API Manual ✨

okay so bestie, buckle up 🎀 this is edac_mc_handle_error from the Kernel API Manual, and it's literally the function that tells userspace "hey, a memory thing happened." That's the whole vibe. Memory event reporting, main character energy, periodt. 💖

✨ NAME ✨

edac_mc_handle_error — reports a memory event to userspace. that's it, that's the job 🫶

🌸 SYNOPSIS 🌸

void edac_mc_handle_error (const enum hw_event_mc_err_type type , struct
mem_ctl_info *mci , const u16 error_count , const unsigned long
page_frame_number , const unsigned long offset_in_page , const unsigned
long syndrome , const int top_layer , const int mid_layer , const int
low_layer , const char *msg , const char *other_detail );

like, yeah, it's a lot of args 😭 but every single one of them is doing something, i promise. no cap.

🦋 ARGUMENTS 🦋

  • type — the severity of the error, and it's one of CE/UE/Fatal 💀 so like, how bad are we talking
  • mci — a struct mem_ctl_info pointer. yes, the struct. you know the one 🧚
  • error_count — the number of errors of the same type. like, how many of these bad boys we got 🔥
  • page_frame_number — the mem page where the error occurred 📄 that's literally where it happened
  • offset_in_page — the offset of the error inside the page. so like, where inside the page 🎯
  • syndrome — the ECC syndrome ⭐
  • top_layer — memory layer[0] position 🌈
  • mid_layer — memory layer[1] position 🌈
  • low_layer — memory layer[2] position 🌈 (yes there are three layers, keep up bestie)
  • msg — a message that's meaningful to the end users, explaining the event. like, human-readable, for actual people 🙈
  • other_detail — technical details about the event that may help hardware manufacturers and EDAC developers analyse the event 🔬 so the nerds (affectionate) can figure out what went down
lowkey important: msg is for the humans, other_detail is for the hardware manufacturers and EDAC developers. two different audiences, two different strings. don't mix them up 💅

👑 SEE ALSO 👑

kernel file ./drivers/edac/edac_mc.h, and also the whole friend group:

and that's the page, bestie 🍓 it's from ./drivers/edac, dated October 2026, and it's titled edac_mc_handle_error(9) — slay, go report some memory events responsibly 💜✨

📦 where this page comes from