[PATCH AUTOSEL 5.9 020/111] crypto: hisilicon - fixed memory allocation error

Sasha Levin
2020-10-18T20:00:18Z

From: Longfang Liu <liulongfang@huawei.com>

[ Upstream commit 24efcec2919afa7d56f848c83a605b46c8042a53 ]

1. Fix the bug of 'mac' memory leak as allocating 'pbuf' failing.
2. Fix the bug of 'qps' leak as allocating 'qp_ctx' failing.

Signed-off-by: Longfang Liu <liulongfang@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/crypto/hisilicon/sec2/sec_crypto.c | 16 ++++++++++++----
1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/drivers/crypto/hisilicon/sec2/sec_crypto.c b/drivers/crypto/hisilicon/sec2/sec_crypto.c
index 497969ae8b230..b9973d152a24a 100644
--- a/drivers/crypto/hisilicon/sec2/sec_crypto.c
+++ b/drivers/crypto/hisilicon/sec2/sec_crypto.c
@@ -342,11 +342,14 @@ static int sec_alg_resource_alloc(struct sec_ctx *ctx,
ret = sec_alloc_pbuf_resource(dev, res);
if (ret) {
dev_err(dev, "fail to alloc pbuf dma resource!\n");
- goto alloc_fail;
+ goto alloc_pbuf_fail;
}
}

return 0;
+alloc_pbuf_fail:
+ if (ctx->alg_type == SEC_AEAD)
+ sec_free_mac_resource(dev, qp_ctx->res);
alloc_fail:
sec_free_civ_resource(dev, res);

@@ -457,8 +460,10 @@ static int sec_ctx_base_init(struct sec_ctx *ctx)
ctx->fake_req_limit = QM_Q_DEPTH >> 1;
ctx->qp_ctx = kcalloc(sec->ctx_q_num, sizeof(struct sec_qp_ctx),
GFP_KERNEL);
- if (!ctx->qp_ctx)
- return -ENOMEM;
+ if (!ctx->qp_ctx) {
+ ret = -ENOMEM;
+ goto err_destroy_qps;
+ }

for (i = 0; i < sec->ctx_q_num; i++) {
ret = sec_create_qp_ctx(&sec->qm, ctx, i, 0);
@@ -467,12 +472,15 @@ static int sec_ctx_base_init(struct sec_ctx *ctx)
}

return 0;
+
err_sec_release_qp_ctx:
for (i = i - 1; i >= 0; i--)
sec_release_qp_ctx(ctx, &ctx->qp_ctx[i]);

- sec_destroy_qps(ctx->qps, sec->ctx_q_num);
kfree(ctx->qp_ctx);
+err_destroy_qps:
+ sec_destroy_qps(ctx->qps, sec->ctx_q_num);
+
return ret;
}

--
2.25.1