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authorThomas Weißschuh <linux@weissschuh.net>2023-01-09 23:59:43 +0000
committerJarkko Sakkinen <jarkko@kernel.org>2023-02-13 10:11:20 +0200
commitc95e8f6fd157b45ef0685c221931561e943e82da (patch)
tree947ea6033cc050a4c3c21ca02e548ff5931b4e2e
parent6c1976addf3623e979b7a954e216004d559bcb42 (diff)
certs: don't try to update blacklist keys
When the same key is blacklisted repeatedly logging at pr_err() level is excessive as no functionality is impaired. When these duplicates are provided by buggy firmware there is nothing the user can do to fix the situation. Instead of spamming the bootlog with errors we use a warning that can still be seen by OEMs when testing their firmware. Link: https://lore.kernel.org/all/c8c65713-5cda-43ad-8018-20f2e32e4432@t-8ch.de/ Link: https://lore.kernel.org/all/20221104014704.3469-1-linux@weissschuh.net/ Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Tested-by: Paul Menzel <pmenzel@molgen.mpg.de> Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org> Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
-rw-r--r--certs/blacklist.c21
1 files changed, 12 insertions, 9 deletions
diff --git a/certs/blacklist.c b/certs/blacklist.c
index 6e260c4b6a19..675dd7a8f07a 100644
--- a/certs/blacklist.c
+++ b/certs/blacklist.c
@@ -183,16 +183,19 @@ static int mark_raw_hash_blacklisted(const char *hash)
{
key_ref_t key;
- key = key_create_or_update(make_key_ref(blacklist_keyring, true),
- "blacklist",
- hash,
- NULL,
- 0,
- BLACKLIST_KEY_PERM,
- KEY_ALLOC_NOT_IN_QUOTA |
- KEY_ALLOC_BUILT_IN);
+ key = key_create(make_key_ref(blacklist_keyring, true),
+ "blacklist",
+ hash,
+ NULL,
+ 0,
+ BLACKLIST_KEY_PERM,
+ KEY_ALLOC_NOT_IN_QUOTA |
+ KEY_ALLOC_BUILT_IN);
if (IS_ERR(key)) {
- pr_err("Problem blacklisting hash %s: %pe\n", hash, key);
+ if (PTR_ERR(key) == -EEXIST)
+ pr_warn("Duplicate blacklisted hash %s\n", hash);
+ else
+ pr_err("Problem blacklisting hash %s: %pe\n", hash, key);
return PTR_ERR(key);
}
return 0;