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From: Andy Green <andy@warmcat.com>
To: dev@dpdk.org
Subject: [dpdk-dev] [PATCH v2 02/18] drivers/bus/pci: fix strncpy dangerous code
Date: Wed, 09 May 2018 09:31:00 +0800	[thread overview]
Message-ID: <152582946078.6809.5506280535385315823.stgit@localhost.localdomain> (raw)
In-Reply-To: <152582834896.6809.14521072557832633661.stgit@localhost.localdomain>

In function ‘pci_get_kernel_driver_by_path’,
    inlined from ‘pci_scan_one.isra.1’ at /home/agreen/projects/dpdk/
	drivers/bus/pci/linux/pci.c:317:8:
/home/agreen/projects/dpdk/drivers/bus/pci/linux/pci.c:57:3: error:
‘strncpy’ specified bound depends on the length of the source argument
[-Werror=stringop-overflow=]
   strncpy(dri_name, name + 1, strlen(name + 1) + 1);

Signed-off-by: Andy Green <andy@warmcat.com>
---
 drivers/bus/pci/linux/pci.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/bus/pci/linux/pci.c b/drivers/bus/pci/linux/pci.c
index 4630a8057..a73ee49c2 100644
--- a/drivers/bus/pci/linux/pci.c
+++ b/drivers/bus/pci/linux/pci.c
@@ -54,7 +54,7 @@ pci_get_kernel_driver_by_path(const char *filename, char *dri_name)
 
 	name = strrchr(path, '/');
 	if (name) {
-		strncpy(dri_name, name + 1, strlen(name + 1) + 1);
+		strlcpy(dri_name, name + 1, sizeof(dri_name));
 		return 0;
 	}
 

  parent reply	other threads:[~2018-05-09  1:31 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-09  1:30 [dpdk-dev] [PATCH v2 00/18] Fix build on gcc8 and various bugs Andy Green
2018-05-09  1:30 ` [dpdk-dev] [PATCH v2 01/18] lib/libtre_table: workaround hash function cast error Andy Green
2018-05-09  1:31 ` Andy Green [this message]
2018-05-09  1:31 ` [dpdk-dev] [PATCH v2 03/18] drivers/bus/dpaa: fix inconsistent struct alignment Andy Green
2018-05-09  8:06   ` Hemant Agrawal
2018-05-09  1:31 ` [dpdk-dev] [PATCH v2 04/18] drivers/net/axgbe: fix broken eeprom string comp Andy Green
2018-05-09  1:31 ` [dpdk-dev] [PATCH v2 05/18] drivers/net/nfp/nfpcore: fix strncpy misuse Andy Green
2018-05-09  9:49   ` Alejandro Lucero
2018-05-09  1:31 ` [dpdk-dev] [PATCH v2 06/18] drivers/net/nfp/nfpcore: fix off-by-one and no NUL on strncpy use Andy Green
2018-05-09  9:53   ` Alejandro Lucero
2018-05-09  1:31 ` [dpdk-dev] [PATCH v2 07/18] drivers/net/nfp: don't memcpy out of source range Andy Green
2018-05-09  9:54   ` Alejandro Lucero
2018-05-09  1:31 ` [dpdk-dev] [PATCH v2 08/18] drivers/net/nfp: fix buffer overflow in fw_name Andy Green
2018-05-09 10:04   ` Alejandro Lucero
2018-05-09  1:31 ` [dpdk-dev] [PATCH v2 09/18] drivers/net/qede: fix strncpy constant and NUL Andy Green
2018-05-09  1:31 ` [dpdk-dev] [PATCH v2 10/18] drivers/net/qede: fix broken strncpy Andy Green
2018-05-09  1:31 ` [dpdk-dev] [PATCH v2 11/18] drivers/net/sfc: fix strncpy length Andy Green
2018-05-09  1:31 ` [dpdk-dev] [PATCH v2 12/18] drivers/net/sfc: fix strncpy size and NUL Andy Green
2018-05-09  1:31 ` [dpdk-dev] [PATCH v2 13/18] drivers/net/vdev: readlink inputs cannot be aliased Andy Green
2018-05-09 15:33   ` Stephen Hemminger
2018-05-09  1:32 ` [dpdk-dev] [PATCH v2 14/18] drivers/net/vdev: fix 3 x strncpy misuse Andy Green
2018-05-09  1:32 ` [dpdk-dev] [PATCH v2 15/18] app/test-pmd: can't find include Andy Green
2018-05-09  1:32 ` [dpdk-dev] [PATCH v2 16/18] app/proc-info: fix sprintf overrun bug Andy Green
2018-05-09  1:32 ` [dpdk-dev] [PATCH v2 17/18] app/test-bbdev: test-bbdev: strcpy ok for allocated string Andy Green
2018-05-09  1:32 ` [dpdk-dev] [PATCH v2 18/18] app/test-bbdev: " Andy Green

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