55 lines
2.2 KiB
Diff
55 lines
2.2 KiB
Diff
|
commit a23820f6052a740246fdc7dcd9c43ce8eed0c45a
|
||
|
|
Author: Javier Pello <devel@otheo.eu>
|
||
|
|
Date: Mon Sep 5 20:09:01 2022 +0200
|
||
|
|
|
||
|
|
elf: Fix hwcaps string size overestimation
|
||
|
|
|
||
|
|
Commit dad90d528259b669342757c37dedefa8577e2636 added glibc-hwcaps
|
||
|
|
support for LD_LIBRARY_PATH and, for this, it adjusted the total
|
||
|
|
string size required in _dl_important_hwcaps. However, in doing so
|
||
|
|
it inadvertently altered the calculation of the size required for
|
||
|
|
the power set strings, as the computation of the power set string
|
||
|
|
size depended on the first value assigned to the total variable,
|
||
|
|
which is later shifted, resulting in overallocation of string
|
||
|
|
space. Fix this now by using a different variable to hold the
|
||
|
|
string size required for glibc-hwcaps.
|
||
|
|
|
||
|
|
Signed-off-by: Javier Pello <devel@otheo.eu>
|
||
|
|
|
||
|
|
diff --git a/elf/dl-hwcaps.c b/elf/dl-hwcaps.c
|
||
|
|
index 2fc4ae67a0f5d051..7ac27fd689187edc 100644
|
||
|
|
--- a/elf/dl-hwcaps.c
|
||
|
|
+++ b/elf/dl-hwcaps.c
|
||
|
|
@@ -193,7 +193,7 @@ _dl_important_hwcaps (const char *glibc_hwcaps_prepend,
|
||
|
|
/* Each hwcaps subdirectory has a GLIBC_HWCAPS_PREFIX string prefix
|
||
|
|
and a "/" suffix once stored in the result. */
|
||
|
|
hwcaps_counts.maximum_length += strlen (GLIBC_HWCAPS_PREFIX) + 1;
|
||
|
|
- size_t total = (hwcaps_counts.count * (strlen (GLIBC_HWCAPS_PREFIX) + 1)
|
||
|
|
+ size_t hwcaps_sz = (hwcaps_counts.count * (strlen (GLIBC_HWCAPS_PREFIX) + 1)
|
||
|
|
+ hwcaps_counts.total_length);
|
||
|
|
|
||
|
|
/* Count the number of bits set in the masked value. */
|
||
|
|
@@ -229,11 +229,12 @@ _dl_important_hwcaps (const char *glibc_hwcaps_prepend,
|
||
|
|
assert (m == cnt);
|
||
|
|
|
||
|
|
/* Determine the total size of all strings together. */
|
||
|
|
+ size_t total;
|
||
|
|
if (cnt == 1)
|
||
|
|
- total += temp[0].len + 1;
|
||
|
|
+ total = temp[0].len + 1;
|
||
|
|
else
|
||
|
|
{
|
||
|
|
- total += temp[0].len + temp[cnt - 1].len + 2;
|
||
|
|
+ total = temp[0].len + temp[cnt - 1].len + 2;
|
||
|
|
if (cnt > 2)
|
||
|
|
{
|
||
|
|
total <<= 1;
|
||
|
|
@@ -255,6 +256,7 @@ _dl_important_hwcaps (const char *glibc_hwcaps_prepend,
|
||
|
|
/* This is the overall result, including both glibc-hwcaps
|
||
|
|
subdirectories and the legacy hwcaps subdirectories using the
|
||
|
|
power set construction. */
|
||
|
|
+ total += hwcaps_sz;
|
||
|
|
struct r_strlenpair *overall_result
|
||
|
|
= malloc (*sz * sizeof (*result) + total);
|
||
|
|
if (overall_result == NULL)
|