crypto: tegra - Disable softirqs before finalizing request

[ Upstream commit 2aeec9a ]

Softirqs must be disabled when calling the finalization fucntion on
a request.

Reported-by: Guangwu Zhang <guazhang@redhat.com>
Fixes: 0880bb3 ("crypto: tegra - Add Tegra Security Engine driver")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>

Author: herbertx

drivers/crypto/tegra/tegra-se-aes.c

@@ -4,6 +4,7 @@
  * Crypto driver to handle block cipher algorithms using NVIDIA Security Engine.
  */
 
+#include <linux/bottom_half.h>
 #include <linux/clk.h>
 #include <linux/dma-mapping.h>
 #include <linux/module.h>
@@ -333,7 +334,9 @@ static int tegra_aes_do_one_req(struct crypto_engine *engine, void *areq)
 		tegra_key_invalidate_reserved(ctx->se, key2_id, ctx->alg);
 
 out_finalize:
+	local_bh_disable();
 	crypto_finalize_skcipher_request(se->engine, req, ret);
+	local_bh_enable();
 
 	return 0;
 }
@@ -1262,7 +1265,9 @@ static int tegra_ccm_do_one_req(struct crypto_engine *engine, void *areq)
 		tegra_key_invalidate_reserved(ctx->se, rctx->key_id, ctx->alg);
 
 out_finalize:
+	local_bh_disable();
 	crypto_finalize_aead_request(ctx->se->engine, req, ret);
+	local_bh_enable();
 
 	return 0;
 }
@@ -1348,7 +1353,9 @@ static int tegra_gcm_do_one_req(struct crypto_engine *engine, void *areq)
 		tegra_key_invalidate_reserved(ctx->se, rctx->key_id, ctx->alg);
 
 out_finalize:
+	local_bh_disable();
 	crypto_finalize_aead_request(ctx->se->engine, req, ret);
+	local_bh_enable();
 
 	return 0;
 }
@@ -1746,7 +1753,9 @@ static int tegra_cmac_do_one_req(struct crypto_engine *engine, void *areq)
 	if (tegra_key_is_reserved(rctx->key_id))
 		tegra_key_invalidate_reserved(ctx->se, rctx->key_id, ctx->alg);
 
+	local_bh_disable();
 	crypto_finalize_hash_request(se->engine, req, ret);
+	local_bh_enable();
 
 	return 0;
 }

drivers/crypto/tegra/tegra-se-hash.c

@@ -4,6 +4,7 @@
  * Crypto driver to handle HASH algorithms using NVIDIA Security Engine.
  */
 
+#include <linux/bottom_half.h>
 #include <linux/clk.h>
 #include <linux/dma-mapping.h>
 #include <linux/module.h>
@@ -498,7 +499,9 @@ static int tegra_sha_do_one_req(struct crypto_engine *engine, void *areq)
 	}
 
 out:
+	local_bh_disable();
 	crypto_finalize_hash_request(se->engine, req, ret);
+	local_bh_enable();
 
 	return 0;
 }