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authorCoprDistGit <infra@openeuler.org>2024-08-03 06:28:41 +0000
committerCoprDistGit <infra@openeuler.org>2024-08-03 06:28:41 +0000
commitd20db0561a6a36f914fde030512503b114ef9a0c (patch)
treed4e5e3494d95c269a1cee6195f11bf3201bcadbf /ld.so-Don-t-fill-the-DT_DEBUG-entry-in-ld.so-BZ-2812.patch
parent016343d99b1b269d7246ef1e143d4b54914433d4 (diff)
Diffstat (limited to 'ld.so-Don-t-fill-the-DT_DEBUG-entry-in-ld.so-BZ-2812.patch')
-rw-r--r--ld.so-Don-t-fill-the-DT_DEBUG-entry-in-ld.so-BZ-2812.patch37
1 files changed, 37 insertions, 0 deletions
diff --git a/ld.so-Don-t-fill-the-DT_DEBUG-entry-in-ld.so-BZ-2812.patch b/ld.so-Don-t-fill-the-DT_DEBUG-entry-in-ld.so-BZ-2812.patch
new file mode 100644
index 0000000..93d45e9
--- /dev/null
+++ b/ld.so-Don-t-fill-the-DT_DEBUG-entry-in-ld.so-BZ-2812.patch
@@ -0,0 +1,37 @@
+From 3234a31b489707f19ec6d4c9909af06f20ddb901 Mon Sep 17 00:00:00 2001
+From: "H.J. Lu" <hjl.tools@gmail.com>
+Date: Mon, 2 Aug 2021 13:52:36 -0700
+Subject: [PATCH] ld.so: Don't fill the DT_DEBUG entry in ld.so [BZ #28129]
+
+Linker creates the DT_DEBUG entry only in executables. Don't fill the
+non-existent DT_DEBUG entry in ld.so with the run-time address of the
+r_debug structure. This fixes BZ #28129.
+---
+ elf/rtld.c | 6 ------
+ 1 file changed, 6 deletions(-)
+
+diff --git a/elf/rtld.c b/elf/rtld.c
+index 9642eb9c92..628245d8cd 100644
+--- a/elf/rtld.c
++++ b/elf/rtld.c
+@@ -1761,17 +1761,11 @@ dl_main (const ElfW(Phdr) *phdr,
+ #ifdef ELF_MACHINE_DEBUG_SETUP
+ /* Some machines (e.g. MIPS) don't use DT_DEBUG in this way. */
+ ELF_MACHINE_DEBUG_SETUP (main_map, r);
+- ELF_MACHINE_DEBUG_SETUP (&GL(dl_rtld_map), r);
+ #else
+ if (main_map->l_info[DT_DEBUG] != NULL)
+ /* There is a DT_DEBUG entry in the dynamic section. Fill it in
+ with the run-time address of the r_debug structure */
+ main_map->l_info[DT_DEBUG]->d_un.d_ptr = (ElfW(Addr)) r;
+-
+- /* Fill in the pointer in the dynamic linker's own dynamic section, in
+- case you run gdb on the dynamic linker directly. */
+- if (GL(dl_rtld_map).l_info[DT_DEBUG] != NULL)
+- GL(dl_rtld_map).l_info[DT_DEBUG]->d_un.d_ptr = (ElfW(Addr)) r;
+ #endif
+
+ /* We start adding objects. */
+--
+2.25.1
+