kmsg_dump_desc(9)

✨ kmsg_dump_desc ✨

okay so bestie, welcome to the Kernel API Manual entry for kmsg_dump_desc(9) — yes it's a kernel function, yes it's a 9th-section manpage, yes we're gonna get through it together 💖

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🎀 NAME 🎀

kmsg_dump_desc — dump the kernel log to the kernel message dumpers. that's it, that's the whole vibe. the kernel log goes out to everybody who signed up to receive it 📤✨

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🌸 SYNOPSIS 🌸

void kmsg_dump_desc (enum kmsg_dump_reason reason , const char *desc );

like, literally just that. two args, no return, void girlie 💅

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🦋 ARGUMENTS 🦋

• reason — the reason we're dumping at all (oops, panic, etc.). basically why we're having this moment 😭
• desc — a short string describing what caused the panic or oops. and listen — it can be NULL if there's no additional description available. no desc, no problem, she still slays 🫶

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👑 DESCRIPTION 👑

so what actually happens? kmsg_dump_desc calls each of the registered dumper's dump callback. every single one. no skipping, bestie, we go through the whole list 🔥

and those callbacks can then retrieve the kmsg records with kmsg_dump_get_line or kmsg_dump_get_buffer — those are the two ways to actually pull the data out, iykyk ✨

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🌈 SEE ALSO 🌈

okay this list is long long, so buckle up. all of these live in the kernel file ./kernel/printk/printk.c — go say hi to the family 💜

• console_list_lock(9)
• console_list_unlock(9)
• console_srcu_read_lock(9)
• console_srcu_read_unlock(9)
• console_lock_spinning_enable(9)
• console_lock_spinning_disable_and_check(9)
• console_trylock_spinning(9)
• printk_parse_prefix(9)
• add_preferred_console(9)
• match_devname_and_update_preferred_console(9)
• console_suspend_all(9)
• console_cpu_notify(9)
• console_lock(9)
• console_trylock(9)
• console_unlock(9)
• console_flush_on_panic(9)
• printk_kthreads_shutdown(9)
• console_force_preferred_locked(9)
• pr_flush(9)
• wake_up_klogd(9)
• defer_console_output(9)
• printk_trigger_flush(9)
• printk_timed_ratelimit(9)
• kmsg_dump_register(9)
• kmsg_dump_unregister(9)
• kmsg_dump_get_line(9)
• kmsg_dump_get_buffer(9)
• kmsg_dump_rewind(9)
• console_try_replay_all(9)
• __printk_cpu_sync_wait(9)
• __printk_cpu_sync_try_get(9)
• __printk_cpu_sync_put(9)

like I said. iconic lineup, no cap 👑

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and that's the whole page, bestie!! this one came from ./kernel/printk and it's dated October 2026 — so go forth, dump those kernel logs, and remember: desc can be NULL and that's still valid 🌸💖✨ periodt.