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* [glibc/google/grte/v5-2.27/master] Fix bug where ld.so hashtable would retain strings passed to dlopen().
@ 2021-07-15 20:54 Stan Shebs
0 siblings, 0 replies; 2+ messages in thread
From: Stan Shebs @ 2021-07-15 20:54 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=0ad524ba97cc582049e92ea22550169e161e307a
commit 0ad524ba97cc582049e92ea22550169e161e307a
Author: Ambrose Feinstein <ambrose@google.com>
Date: Thu Jul 15 13:53:47 2021 -0700
Fix bug where ld.so hashtable would retain strings passed to dlopen().
Diff:
---
elf/dl-load.c | 13 ++-----------
1 file changed, 2 insertions(+), 11 deletions(-)
diff --git a/elf/dl-load.c b/elf/dl-load.c
index 1ae72aa325..957f1b9b30 100644
--- a/elf/dl-load.c
+++ b/elf/dl-load.c
@@ -877,6 +877,7 @@ lib_hash_addname (const char *name, struct link_map *lib)
*p = n;
}
+/* 'name' must be the exact pointer originally passed to lib_hash_addname(). */
static void
lib_hash_delname (const char *name, struct link_map *lib)
{
@@ -885,8 +886,7 @@ lib_hash_delname (const char *name, struct link_map *lib)
while (*p)
{
struct lib_hash_namenode *n = *p;
- if (n->hash == hash && n->lib == lib &&
- (n->name == name || !strcmp (n->name, name))) {
+ if (n->hash == hash && n->lib == lib && n->name == name) {
*p = n->next;
free (n);
return;
@@ -1018,16 +1018,7 @@ _dl_map_object_from_fd (const char *name, const char *origname, int fd, off_t of
Just bump its reference count and return it. */
__close (fd);
- /* If the name is not in the list of names for this object add
- it. */
free (realname);
- if (offset == 0)
- {
- /* If offset!=0, foo.so/@0x<offset> should be the *only*
- name for this object. b/20141439. */
- add_name_to_object (l, name);
- lib_hash_addname (name, l);
- }
return l;
}
^ permalink raw reply [flat|nested] 2+ messages in thread
* [glibc/google/grte/v5-2.27/master] Fix bug where ld.so hashtable would retain strings passed to dlopen().
@ 2021-08-28 0:39 Fangrui Song
0 siblings, 0 replies; 2+ messages in thread
From: Fangrui Song @ 2021-08-28 0:39 UTC (permalink / raw)
To: glibc-cvs
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=22d31aef9ef4cad63fa5cc2e92e3cde403b97948
commit 22d31aef9ef4cad63fa5cc2e92e3cde403b97948
Author: Ambrose Feinstein <ambrose@google.com>
Date: Thu Jul 15 13:53:47 2021 -0700
Fix bug where ld.so hashtable would retain strings passed to dlopen().
Diff:
---
elf/dl-load.c | 13 ++-----------
1 file changed, 2 insertions(+), 11 deletions(-)
diff --git a/elf/dl-load.c b/elf/dl-load.c
index 1ae72aa325..957f1b9b30 100644
--- a/elf/dl-load.c
+++ b/elf/dl-load.c
@@ -877,6 +877,7 @@ lib_hash_addname (const char *name, struct link_map *lib)
*p = n;
}
+/* 'name' must be the exact pointer originally passed to lib_hash_addname(). */
static void
lib_hash_delname (const char *name, struct link_map *lib)
{
@@ -885,8 +886,7 @@ lib_hash_delname (const char *name, struct link_map *lib)
while (*p)
{
struct lib_hash_namenode *n = *p;
- if (n->hash == hash && n->lib == lib &&
- (n->name == name || !strcmp (n->name, name))) {
+ if (n->hash == hash && n->lib == lib && n->name == name) {
*p = n->next;
free (n);
return;
@@ -1018,16 +1018,7 @@ _dl_map_object_from_fd (const char *name, const char *origname, int fd, off_t of
Just bump its reference count and return it. */
__close (fd);
- /* If the name is not in the list of names for this object add
- it. */
free (realname);
- if (offset == 0)
- {
- /* If offset!=0, foo.so/@0x<offset> should be the *only*
- name for this object. b/20141439. */
- add_name_to_object (l, name);
- lib_hash_addname (name, l);
- }
return l;
}
^ permalink raw reply [flat|nested] 2+ messages in thread
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2021-07-15 20:54 [glibc/google/grte/v5-2.27/master] Fix bug where ld.so hashtable would retain strings passed to dlopen() Stan Shebs
2021-08-28 0:39 Fangrui Song
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