Re: [PATCH 0/3] lib/crypto: Provide functions for zeroizing SHA2 hmac_sha* structures

[Eric Biggers]

On Mon, Sep 28, 2026 at 10:30:52AM +0200, Thomas Huth wrote:
> This patch series has been split of my earlier zeroization patch
> series since there were some troubles left with the purgatory patch:
> 
>  https://lore.kernel.org/all/20260924145806.GA1949494@ax162/
> 
> As I've confirmed now, the fix for the problem is indeed to set
> -D__DISABLE_EXPORTS for the other files in the x86 purgatory, too,
> so the first patch here has now been changed accordingly.
> 
> Thomas Huth (3):
>   x86/purgatory: Compile purgatory with -D__NO_FORTIFY and
>     -D__DISABLE_EXPORTS
>   lib/crypto: sha2: Provide functions for zeroizing SHA2 hmac_sha*
>     structures
>   smb: client: Use hmac_sha256_zeroize_ctx function to clear
>     hmac_sha256_ctx
> 
>  arch/x86/purgatory/Makefile   |  3 +-
>  fs/smb/client/smb2transport.c |  3 +-
>  include/crypto/sha2.h         | 73 +++++++++++++++++++++++++++++++++++
>  3 files changed, 75 insertions(+), 4 deletions(-)

Applied to https://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux.git/log/?h=libcrypto-next

- Eric