linux-kernel - Re: [PATCH v2 1/1] certs: Explain the rationale to call panic()

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Message-ID: <2933967.1648644806@warthog.procyon.org.uk>
Date:   Wed, 30 Mar 2022 13:53:26 +0100
From:   David Howells <dhowells@...hat.com>
To:     =?UTF-8?q?Micka=C3=ABl=20Sala=C3=BCn?= <mic@...ikod.net>
Cc:     dhowells@...hat.com, Jarkko Sakkinen <jarkko@...nel.org>,
        "David S . Miller" <davem@...emloft.net>,
        David Woodhouse <dwmw2@...radead.org>,
        Eric Snowberg <eric.snowberg@...cle.com>,
        Paul Moore <paul@...l-moore.com>,
        Tyler Hicks <tyhicks@...ux.microsoft.com>,
        keyrings@...r.kernel.org, linux-crypto@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        =?UTF-8?q?Micka=C3=ABl=20Sala=C3=BCn?= 
        <mic@...ux.microsoft.com>
Subject: Re: [PATCH v2 1/1] certs: Explain the rationale to call panic()

Mickaël Salaün <mic@...ikod.net> wrote:

> The blacklist_init() function calls panic() for memory allocation
> errors.  This change documents the reason why we don't return -ENODEV.

Why, though?

This is only called whilst the kernel is booting.  If you hit ENOMEM, you
aren't likely to get much further with the boot process.

David