[PATCH v3 05/12] dm crypt: Allocate key material from the secret pool

[sashiko-bot at kernel.org]

> dm-crypt keeps the volume key, the IV mode seeds and, when a keyring key
> is used, the key description in memory for as long as the target exists.
> If the system crashes, they are left in memory and will end up in a
> crash dump.
> 
> Allocate every buffer that holds key material from the new secret pool,
> whose backing pages are marked by crash_memaction for the kdump kernel
> to wipe. The volume key is a flexible array at the end of struct
> crypt_config, so the whole struct moves into the pool with it.
> 
> Signed-off-by: Jan Sebastian Götte <linux at jaseg.de>

Sashiko has reviewed this patch and found no issues. It looks great!

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Sashiko AI review · https://sashiko.dev/#/patchset/20260928-crash-memaction-upstream-20260921-v3-0-e511e9ee2329@jaseg.de?part=5