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authorChristian Lamparter <chunkeey@googlemail.com>2017-08-25 16:47:24 +0300
committerHerbert Xu <herbert@gondor.apana.org.au>2017-09-22 12:43:19 +0300
commit5d59ad6eea82ef8df92b4109615a0dde9d8093e9 (patch)
tree35d685e706c89ab9b8ed5e54d9825fe721cddb0f /drivers
parent40e3b847bff70edc28c5290d209e531da6f9e534 (diff)
downloadlinux-5d59ad6eea82ef8df92b4109615a0dde9d8093e9.tar.xz
crypto: crypto4xx - fix crypto4xx_build_pdr, crypto4xx_build_sdr leak
If one of the later memory allocations in rypto4xx_build_pdr() fails: dev->pdr (and/or) dev->pdr_uinfo wouldn't be freed. crypto4xx_build_sdr() has the same issue with dev->sdr. Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/crypto/amcc/crypto4xx_core.c17
1 files changed, 9 insertions, 8 deletions
diff --git a/drivers/crypto/amcc/crypto4xx_core.c b/drivers/crypto/amcc/crypto4xx_core.c
index c47c84f7492a..817c44703a07 100644
--- a/drivers/crypto/amcc/crypto4xx_core.c
+++ b/drivers/crypto/amcc/crypto4xx_core.c
@@ -209,7 +209,7 @@ static u32 crypto4xx_build_pdr(struct crypto4xx_device *dev)
dev->pdr_pa);
return -ENOMEM;
}
- memset(dev->pdr, 0, sizeof(struct ce_pd) * PPC4XX_NUM_PD);
+ memset(dev->pdr, 0, sizeof(struct ce_pd) * PPC4XX_NUM_PD);
dev->shadow_sa_pool = dma_alloc_coherent(dev->core_dev->device,
256 * PPC4XX_NUM_PD,
&dev->shadow_sa_pool_pa,
@@ -242,13 +242,15 @@ static u32 crypto4xx_build_pdr(struct crypto4xx_device *dev)
static void crypto4xx_destroy_pdr(struct crypto4xx_device *dev)
{
- if (dev->pdr != NULL)
+ if (dev->pdr)
dma_free_coherent(dev->core_dev->device,
sizeof(struct ce_pd) * PPC4XX_NUM_PD,
dev->pdr, dev->pdr_pa);
+
if (dev->shadow_sa_pool)
dma_free_coherent(dev->core_dev->device, 256 * PPC4XX_NUM_PD,
dev->shadow_sa_pool, dev->shadow_sa_pool_pa);
+
if (dev->shadow_sr_pool)
dma_free_coherent(dev->core_dev->device,
sizeof(struct sa_state_record) * PPC4XX_NUM_PD,
@@ -417,12 +419,12 @@ static u32 crypto4xx_build_sdr(struct crypto4xx_device *dev)
static void crypto4xx_destroy_sdr(struct crypto4xx_device *dev)
{
- if (dev->sdr != NULL)
+ if (dev->sdr)
dma_free_coherent(dev->core_dev->device,
sizeof(struct ce_sd) * PPC4XX_NUM_SD,
dev->sdr, dev->sdr_pa);
- if (dev->scatter_buffer_va != NULL)
+ if (dev->scatter_buffer_va)
dma_free_coherent(dev->core_dev->device,
PPC4XX_SD_BUFFER_SIZE * PPC4XX_NUM_SD,
dev->scatter_buffer_va,
@@ -1223,7 +1225,7 @@ static int crypto4xx_probe(struct platform_device *ofdev)
rc = crypto4xx_build_gdr(core_dev->dev);
if (rc)
- goto err_build_gdr;
+ goto err_build_pdr;
rc = crypto4xx_build_sdr(core_dev->dev);
if (rc)
@@ -1266,12 +1268,11 @@ err_iomap:
err_request_irq:
irq_dispose_mapping(core_dev->irq);
tasklet_kill(&core_dev->tasklet);
- crypto4xx_destroy_sdr(core_dev->dev);
err_build_sdr:
+ crypto4xx_destroy_sdr(core_dev->dev);
crypto4xx_destroy_gdr(core_dev->dev);
-err_build_gdr:
- crypto4xx_destroy_pdr(core_dev->dev);
err_build_pdr:
+ crypto4xx_destroy_pdr(core_dev->dev);
kfree(core_dev->dev);
err_alloc_dev:
kfree(core_dev);