kernel/linux.git/include/crypto/internal/acompress.h, branch linux-rolling-lts

crypto: acomp - Fix CFI failure due to type punning

2025-07-18T10:52:00+00:00

To avoid a crash when control flow integrity is enabled, make the workspace ("stream") free function use a consistent type, and call it through a function pointer that has that same type. Fixes: 42d9f6c77479 ("crypto: acomp - Move scomp stream allocation code into acomp") Cc: stable@vger.kernel.org Signed-off-by: Eric Biggers Reviewed-by: Giovanni Cabiddu Signed-off-by: Herbert Xu

crypto: api - Rename CRYPTO_ALG_REQ_CHAIN to CRYPTO_ALG_REQ_VIRT

2025-05-05T10:20:45+00:00

As chaining has been removed, all that remains of REQ_CHAIN is just virtual address support. Rename it before the reintroduction of batching creates confusion. Signed-off-by: Herbert Xu

crypto: api - Add crypto_stack_request_init and initialise flags fully

2025-04-28T11:45:26+00:00

Add a helper to initialise crypto stack requests and use it for ahash and acomp. Make sure that the flags field is initialised fully in the helper to silence false-positive warnings from the compiler. Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202504250751.mdy28Ibr-lkp@intel.com/ Signed-off-by: Herbert Xu

crypto: api - Add crypto_request_clone and fb

2025-04-28T11:40:54+00:00

Add a helper to clone crypto requests and eliminate code duplication. Use kmemdup in the helper. Also add an fb field to crypto_tfm. This also happens to fix the existing implementations which were buggy. Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202504230118.1CxUaUoX-lkp@intel.com/ Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202504230004.c7mrY0C6-lkp@intel.com/ Signed-off-by: Herbert Xu

crypto: deflate - Make the acomp walk atomic

2025-04-17T02:41:47+00:00

Add an atomic flag to the acomp walk and use that in deflate. Due to the use of a per-cpu context, it is impossible to sleep during the walk in deflate. Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-lkp/202504151654.4c3b6393-lkp@intel.com Fixes: 08cabc7d3c86 ("crypto: deflate - Convert to acomp") Signed-off-by: Herbert Xu

crypto: acomp - Remove reqsize field

2025-04-16T07:16:21+00:00

Remove the type-specific reqsize field in favour of the common one. Signed-off-by: Herbert Xu

crypto: acomp - Simplify folio handling

2025-04-16T07:16:21+00:00

Rather than storing the folio as is and handling it later, convert it to a scatterlist right away. Signed-off-by: Herbert Xu

crypto: acomp - Add ACOMP_REQUEST_CLONE

2025-04-16T07:16:20+00:00

Add a new helper ACOMP_REQUEST_CLONE that will transform a stack request into a dynamically allocated one if possible, and otherwise switch it over to the sycnrhonous fallback transform. The intended usage is: ACOMP_STACK_ON_REQUEST(req, tfm); ... err = crypto_acomp_compress(req); /* The request cannot complete synchronously. */ if (err == -EAGAIN) { /* This will not fail. */ req = ACOMP_REQUEST_CLONE(req, gfp); /* Redo operation. */ err = crypto_acomp_compress(req); } Signed-off-by: Herbert Xu

crypto: acomp - Add ACOMP_FBREQ_ON_STACK

2025-04-16T07:16:20+00:00

Add a helper to create an on-stack fallback request from a given request. Use this helper in acomp_do_nondma. Signed-off-by: Herbert Xu

crypto: acomp - Use request flag helpers and add acomp_request_flags

2025-04-16T07:16:20+00:00

Use the newly added request flag helpers to manage the request flags. Also add acomp_request_flags which lets bottom-level users to access the request flags without the bits private to the acomp API. Signed-off-by: Herbert Xu