mirror of https://gitee.com/openkylin/linux.git
7850c91b17
Crypto requests are not guaranteed to be finalized (->final() call), and can be freed at any moment, without getting any notification from the core. This can lead to memory leaks of the ->cache buffer. Make this buffer part of the request object, and allocate an extra buffer from the DMA cache pool when doing DMA operations. As a side effect, this patch also fixes another bug related to cache allocation and DMA operations. When the core allocates a new request and import an existing state, a cache buffer can be allocated (depending on the state). The problem is, at that very moment, we don't know yet whether the request will use DMA or not, and since everything is likely to be initialized to zero, mv_cesa_ahash_alloc_cache() thinks it should allocate a buffer for standard operation. But when mv_cesa_ahash_free_cache() is called, req->type has been set to CESA_DMA_REQ in the meantime, thus leading to an invalind dma_pool_free() call (the buffer passed in argument has not been allocated from the pool). Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Reported-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> |
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| .. | ||
| Makefile | ||
| cesa.c | ||
| cesa.h | ||
| cipher.c | ||
| hash.c | ||
| tdma.c | ||