[dpdk-dev] [PATCH v1 2/2] raw/ifpga/base: add argument to use untained variable
Xu, Rosen
rosen.xu at intel.com
Thu Apr 1 10:48:46 CEST 2021
Hi,
-----Original Message-----
From: Huang, Wei <wei.huang at intel.com>
Sent: Wednesday, March 17, 2021 4:24 PM
To: dev at dpdk.org; Xu, Rosen <rosen.xu at intel.com>; Zhang, Qi Z <qi.z.zhang at intel.com>
Cc: stable at dpdk.org; Zhang, Tianfei <tianfei.zhang at intel.com>; Huang, Wei <wei.huang at intel.com>
Subject: [PATCH v1 2/2] raw/ifpga/base: add argument to use untained variable
In fme_nios_spi_init(), passing tainted expression "fme->max10_dev"
to function "fme_get_board_interface" has risk. Add new arguemnt in function "fme_get_board_interface" to accept untainted variable.
Coverity issue: 367482
Fixes: 96ebfcf8125c ("raw/ifpga/base: add SPI and MAX10 device driver")
Signed-off-by: Wei Huang <wei.huang at intel.com>
---
drivers/raw/ifpga/base/ifpga_fme.c | 13 +++++++------
1 file changed, 7 insertions(+), 6 deletions(-)
diff --git a/drivers/raw/ifpga/base/ifpga_fme.c b/drivers/raw/ifpga/base/ifpga_fme.c
index a63f90331f..4edb9e09e1 100644
--- a/drivers/raw/ifpga/base/ifpga_fme.c
+++ b/drivers/raw/ifpga/base/ifpga_fme.c
@@ -857,7 +857,8 @@ static int board_type_to_info(u32 type,
return 0;
}
-static int fme_get_board_interface(struct ifpga_fme_hw *fme)
+static int fme_get_board_interface(struct ifpga_fme_hw *fme,
+ struct intel_max10_device *max10_dev)
{
struct fme_bitstream_id id;
struct ifpga_hw *hw;
@@ -911,15 +912,15 @@ static int fme_get_board_interface(struct ifpga_fme_hw *fme)
fme->board_info.nums_of_fvl,
fme->board_info.ports_per_fvl);
- if (max10_sys_read(fme->max10_dev, FPGA_PAGE_INFO, &val))
+ if (max10_sys_read(max10_dev, FPGA_PAGE_INFO, &val))
return -EINVAL;
fme->board_info.boot_page = val & 0x7;
- if (max10_sys_read(fme->max10_dev, MAX10_BUILD_VER, &val))
+ if (max10_sys_read(max10_dev, MAX10_BUILD_VER, &val))
return -EINVAL;
fme->board_info.max10_version = val;
- if (max10_sys_read(fme->max10_dev, NIOS2_FW_VERSION, &val))
+ if (max10_sys_read(max10_dev, NIOS2_FW_VERSION, &val))
return -EINVAL;
fme->board_info.nios_fw_version = val;
@@ -1169,7 +1170,7 @@ static int fme_nios_spi_init(struct ifpga_feature *feature)
max10->bus = hw->pci_data->bus;
- fme_get_board_interface(fme);
+ fme_get_board_interface(fme, max10);
mgr->sensor_list = &max10->opae_sensor_list;
@@ -1186,7 +1187,7 @@ static int fme_nios_spi_init(struct ifpga_feature *feature)
return ret;
spi_fail:
- intel_max10_device_remove(fme->max10_dev);
+ intel_max10_device_remove(max10);
release_dev:
altera_spi_release(spi_master);
return -ENODEV;
--
2.29.2
Acked-by: Rosen Xu <rosen.xu at intel.com>
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