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authorKhem Raj <raj.khem@gmail.com>2018-03-29 08:38:28 -0700
committerRichard Purdie <richard.purdie@linuxfoundation.org>2018-03-31 09:48:42 +0100
commit56bd66ee8e3f96622f9672efe660324fa66e93be (patch)
tree13e3282d418e3df6bee641ccfdf502ee1e6b641d /meta/recipes-devtools/mmc/mmc-utils
parentafd8490dcbd2755f1ed924ea6357ab922ed1f481 (diff)
downloadpoky-56bd66ee8e3f96622f9672efe660324fa66e93be.tar.gz
mmc-utils: Fix string overflow error
The SRCREV change bring another patch from upstream b4fe0c8 fix ENH_START_ADDR overflow (From OE-Core rev: 97dd1b0ab5524fe9cda53f60847f3e3c07cc90a8) Signed-off-by: Khem Raj <raj.khem@gmail.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'meta/recipes-devtools/mmc/mmc-utils')
-rw-r--r--meta/recipes-devtools/mmc/mmc-utils/0001-lsmmc-replace-strncpy-with-memmove-on-overlapping-me.patch36
1 files changed, 36 insertions, 0 deletions
diff --git a/meta/recipes-devtools/mmc/mmc-utils/0001-lsmmc-replace-strncpy-with-memmove-on-overlapping-me.patch b/meta/recipes-devtools/mmc/mmc-utils/0001-lsmmc-replace-strncpy-with-memmove-on-overlapping-me.patch
new file mode 100644
index 0000000000..62e25fde9b
--- /dev/null
+++ b/meta/recipes-devtools/mmc/mmc-utils/0001-lsmmc-replace-strncpy-with-memmove-on-overlapping-me.patch
@@ -0,0 +1,36 @@
1From 175ac0f362bf6121c3537e2f1760ad41c8f81367 Mon Sep 17 00:00:00 2001
2From: Khem Raj <raj.khem@gmail.com>
3Date: Thu, 29 Mar 2018 01:04:57 -0700
4Subject: [PATCH] lsmmc: replace strncpy with memmove on overlapping memory
5 copy
6
7here source and destination addresses are overlapping so using memmove is
8going to be more efficient.
9
10Additionally, the bounded size for copy is overflowing for first copy
11
12In function 'strncpy',
13 inlined from 'read_file' at lsmmc.c:356:3:
14/mnt/a/oe/build/tmp/work/cortexa7t2hf-neon-vfpv4-bec-linux-gnueabi/mmc-utils/0.1-r0/recipe-sysroot/usr/include/bits/string_fortified.h:106:10: error: '__builtin_strncpy' accessing 4096 bytes at offsets 0 and 1 overlaps 4095 bytes at offset 1 [-Werror=restrict]
15 return __builtin___strncpy_chk (__dest, __src, __len, __bos (__dest));
16 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
17
18Signed-off-by: Khem Raj <raj.khem@gmail.com>
19---
20Upstream-Status: Submitted [https://patchwork.kernel.org/patch/10314723/]
21 lsmmc.c | 2 +-
22 1 file changed, 1 insertion(+), 1 deletion(-)
23
24diff --git a/lsmmc.c b/lsmmc.c
25index c4faa00..bcb854d 100644
26--- a/lsmmc.c
27+++ b/lsmmc.c
28@@ -353,7 +353,7 @@ char *read_file(char *name)
29 line[strlen(line) - 1] = '\0';
30
31 while (isspace(line[0]))
32- strncpy(&line[0], &line[1], sizeof(line));
33+ memmove(&line[0], &line[1], sizeof(line)-1);
34
35 return strdup(line);
36 }