From 5d59ad6eea82ef8df92b4109615a0dde9d8093e9 Mon Sep 17 00:00:00 2001 From: Christian Lamparter Date: Fri, 25 Aug 2017 15:47:24 +0200 Subject: [PATCH 11/25] 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 Signed-off-by: Herbert Xu --- drivers/crypto/amcc/crypto4xx_core.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) --- a/drivers/crypto/amcc/crypto4xx_core.c +++ b/drivers/crypto/amcc/crypto4xx_core.c @@ -209,7 +209,7 @@ static u32 crypto4xx_build_pdr(struct cr 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 cr 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 cr 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 platfo 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);