STRUCT EDAC_RAW_ERROR_DESC(9)

💖 struct edac_raw_error_desc(9) 💖

okay so real talk — this is a page straight outta the Kernel API Manual, and it's about struct edac_raw_error_desc, aka the raw error report structure. that's the little bundle of info the kernel uses to describe a memory error before it gets all dressed up and reported 💅 bestie, it's giving "receipt for a bad time" and honestly? iconic.

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✨ SYNOPSIS ✨

like, here's the whole shape of it, no cap:

struct edac_raw_error_desc {
    char location[LOCATION_SIZE];
    char label[(EDAC_MC_LABEL_LEN + 1 + sizeof(OTHER_LABEL)) *
EDAC_MAX_LABELS];
    long grain;
    u16 error_count;
    enum hw_event_mc_err_type type;
    int top_layer;
    int mid_layer;
    int low_layer;
    unsigned long page_frame_number;
    unsigned long offset_in_page;
    unsigned long syndrome;
    const char *msg;
    const char *other_detail;
 };

not me staring at that label array size like 😭 — it's literally (EDAC_MC_LABEL_LEN + 1 + sizeof(OTHER_LABEL)) * EDAC_MAX_LABELS, and yes, the wrapping is exactly what the kernel hands you. respect it 🫶

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🌸 MEMBERS 🌸

okay now the main character content — every single field, explained with love:

• location — where the error happened, literally the location of the error 📍
• label — the label of the affected DIMM(s). yes, DIMM*s*, plural, she can hold a whole squad 💖
• grain — the minimum granularity for an error report, in bytes. small but mighty ✨
• error_count — how many errors of the same type showed up. it's a u16, keep that in mind 🔥
• type — the severity of the error (CE/UE/Fatal). vibe check on the damage level 💀
• top_layer — the top layer of the error (layer[0]) 👑
• mid_layer — the middle layer of the error (layer[1]) 🎀
• low_layer — the low layer of the error (layer[2]) 🌸
• page_frame_number — the page where the error happened. the scene of the crime, fr fr 📄
• offset_in_page — the page offset. micro-location tea 🦋
• syndrome — the syndrome of the error, or 0 if it's unknown or if the syndrome is not applicable. zero means "idk or n/a", not "all good" — don't get it twisted 🙈
• msg — the error message. the announcement, the moment 🌈
• other_detail — other driver-specific detail about the error. the extra lore, iykyk 💜

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👀 SEE ALSO 👀

go read these next, bestie, they're all in the kernel file ./include/linux/edac.h:

• enum dev_type(9)
• enum hw_event_mc_err_type(9)
• enum mem_type(9)
• enum edac_type(9)
• enum scrub_type(9)
• enum edac_mc_layer_type(9)
• struct edac_mc_layer(9)
• struct rank_info(9)
• edac_get_dimm(9)
• struct edac_scrub_ops(9)
• struct edac_ecs_ops(9)
• struct edac_mem_repair_ops(9)

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lowkey a whole study session right there — read them in order and you'll eat, no notes 💅

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and that's the whole page, periodt 🎀 this came from the ./include/linux section of the Kernel API Manual, dated October 2026 — mwah, tysm for reading, bestie 💖✨🦋