Commit 8e6173c1 authored by Gilad Ben-Yossef's avatar Gilad Ben-Yossef Committed by Greg Kroah-Hartman

staging: ccree: check DMA pool buf !NULL before free

commit 2f7caf6b upstream.

If we ran out of DMA pool buffers, we get into the unmap
code path with a NULL before. Deal with this by checking
the virtual mapping is not NULL.

Cc: stable@vger.kernel.org
Signed-off-by: default avatarGilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: default avatarSudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 61377bc8
......@@ -492,7 +492,8 @@ void ssi_buffer_mgr_unmap_blkcipher_request(
DMA_TO_DEVICE);
}
/* Release pool */
if (req_ctx->dma_buf_type == SSI_DMA_BUF_MLLI) {
if (req_ctx->dma_buf_type == SSI_DMA_BUF_MLLI &&
req_ctx->mlli_params.mlli_virt_addr) {
dma_pool_free(req_ctx->mlli_params.curr_pool,
req_ctx->mlli_params.mlli_virt_addr,
req_ctx->mlli_params.mlli_dma_addr);
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment