Re: [PATCH v3 1/3] certs: log hash value on blacklist error

From: Jarkko Sakkinen
Date: Sun Nov 27 2022 - 20:12:06 EST


"Make blacklisted hash available in klog"

On Fri, Nov 18, 2022 at 05:03:41AM +0100, Thomas Weißschuh wrote:
> Without this information these logs are not actionable.

Without blacklisted hash?

> For example on duplicate blacklisted hashes reported by the system
> firmware users should be able to report the erroneous hashes to their
> system vendors.
>
> While we are at it use the dedicated format string for ERR_PTR.

Lacks the beef so saying "while we are at it" makes no sense.

> Fixes: 6364d106e041 ("certs: Allow root user to append signed hashes to the blacklist keyring")

Why does this count as a bug?

> Signed-off-by: Thomas Weißschuh <linux@xxxxxxxxxxxxxx>
> ---
> certs/blacklist.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/certs/blacklist.c b/certs/blacklist.c
> index 41f10601cc72..6e260c4b6a19 100644
> --- a/certs/blacklist.c
> +++ b/certs/blacklist.c
> @@ -192,7 +192,7 @@ static int mark_raw_hash_blacklisted(const char *hash)
> KEY_ALLOC_NOT_IN_QUOTA |
> KEY_ALLOC_BUILT_IN);
> if (IS_ERR(key)) {
> - pr_err("Problem blacklisting hash (%ld)\n", PTR_ERR(key));
> + pr_err("Problem blacklisting hash %s: %pe\n", hash, key);
> return PTR_ERR(key);
> }
> return 0;
> --
> 2.38.1
>

BR, Jarkko