[PATCH v3 1/3] KEYS: Don't write out to userspace while holding key semaphore

David Howells dhowells at redhat.com
Mon Mar 16 11:50:51 UTC 2020


Waiman Long <longman at redhat.com> wrote:

>  include/linux/key-type.h                  |  2 +-
>  security/keys/big_key.c                   | 11 ++---
>  security/keys/encrypted-keys/encrypted.c  |  7 ++-
>  security/keys/keyctl.c                    | 57 +++++++++++++++++++----
>  security/keys/keyring.c                   |  6 +--
>  security/keys/request_key_auth.c          |  7 ++-
>  security/keys/trusted-keys/trusted_tpm1.c | 14 +-----
>  security/keys/user_defined.c              |  5 +-
> ...
> -	long (*read)(const struct key *key, char __user *buffer, size_t buflen);
> +	long (*read)(const struct key *key, char *buffer, size_t buflen);

Note that there are read functions outside of security/keys/ that also need
fixing - dns_resolver_read() and rxrpc_read().

David



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