From 01625cc5e65f420dbea57f7de6b9552a0f807a84 Mon Sep 17 00:00:00 2001 From: Bjorn Andersson Date: Wed, 15 Feb 2017 14:00:41 -0800 Subject: [PATCH] remoteproc: qcom: mdt_loader: Use signed type for offset In the transition from using rproc_da_to_va(), the type of the load offset became unsigned. This causes the subsequent check to let negative values less than p_memsz + mem_size through and we write outside of the buffer. Change the type back to a signed value to catch this. Fixes: 7f0dd07a9b29 ("remoteproc: qcom: mdt_loader: Refactor MDT loader") Fixes: e7fd25226295 ("remoteproc: qcom: q6v5: Decouple driver from MDT loader") Reported-by: Dan Carpenter Reported-by: Stanimir Varbanov Acked-by: Andy Gross Signed-off-by: Bjorn Andersson --- drivers/remoteproc/qcom_q6v5_pil.c | 2 +- drivers/soc/qcom/mdt_loader.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/remoteproc/qcom_q6v5_pil.c b/drivers/remoteproc/qcom_q6v5_pil.c index 26446eb..8fd697a 100644 --- a/drivers/remoteproc/qcom_q6v5_pil.c +++ b/drivers/remoteproc/qcom_q6v5_pil.c @@ -502,7 +502,7 @@ static int q6v5_mpss_load(struct q6v5 *qproc) phys_addr_t max_addr = 0; bool relocate = false; char seg_name[10]; - size_t offset; + ssize_t offset; size_t size; void *ptr; int ret; diff --git a/drivers/soc/qcom/mdt_loader.c b/drivers/soc/qcom/mdt_loader.c index 98b2373..bd63df0 100644 --- a/drivers/soc/qcom/mdt_loader.c +++ b/drivers/soc/qcom/mdt_loader.c @@ -98,7 +98,7 @@ int qcom_mdt_load(struct device *dev, const struct firmware *fw, phys_addr_t min_addr = (phys_addr_t)ULLONG_MAX; phys_addr_t max_addr = 0; size_t fw_name_len; - size_t offset; + ssize_t offset; char *fw_name; bool relocate = false; void *ptr; -- 2.7.4