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For scatterlists containing a highmem page, sg_virt() yields invalid or null adrdess, causing potential memory corruption. While we are here, also change function signature to change buflen from int to unsigned int. Fixes: 35645ca63caa1 ("crypto: ti - Add support for AES-CTR in DTHEv2 driver") Signed-off-by: T Pratham --- drivers/crypto/ti/dthev2-common.c | 4 ++-- drivers/crypto/ti/dthev2-common.h | 2 +- 2 files changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/crypto/ti/dthev2-common.c b/drivers/crypto/ti/dthev2-common.c index a7d3831f2f9cb..911e6bbe4d241 100644 --- a/drivers/crypto/ti/dthev2-common.c +++ b/drivers/crypto/ti/dthev2-common.c @@ -49,7 +49,7 @@ struct dthe_data *dthe_get_dev(struct dthe_tfm_ctx *ctx) struct scatterlist *dthe_copy_sg(struct scatterlist *dst, struct scatterlist *src, - int buflen) + unsigned int buflen) { struct scatterlist *from_sg, *to_sg; int sglen; @@ -58,7 +58,7 @@ struct scatterlist *dthe_copy_sg(struct scatterlist *dst, sglen = from_sg->length; if (sglen > buflen) sglen = buflen; - sg_set_buf(to_sg, sg_virt(from_sg), sglen); + sg_set_page(to_sg, sg_page(from_sg), sglen, from_sg->offset); from_sg = sg_next(from_sg); to_sg = sg_next(to_sg); } diff --git a/drivers/crypto/ti/dthev2-common.h b/drivers/crypto/ti/dthev2-common.h index d4a3b9c18bbc1..75d9a097650da 100644 --- a/drivers/crypto/ti/dthev2-common.h +++ b/drivers/crypto/ti/dthev2-common.h @@ -126,7 +126,7 @@ struct dthe_data *dthe_get_dev(struct dthe_tfm_ctx *ctx); **/ struct scatterlist *dthe_copy_sg(struct scatterlist *dst, struct scatterlist *src, - int buflen); + unsigned int buflen); int dthe_register_aes_algs(void); void dthe_unregister_aes_algs(void); -- 2.34.1