From 6fa433ba0ec6d81ab4b05485c7e4dc8646721152 Mon Sep 17 00:00:00 2001
From: DJ Delorie <dj@redhat.com>
Date: Wed, 17 Sep 2025 17:22:14 -0400
Subject: [PATCH] Resolves "couldn't find DT_PPC64_GLINK" bug (RHEL-68373)

Resolves: RHEL-68373
---
 ltrace-rhel68373.patch | 31 +++++++++++++++++++++++++++++++
 ltrace.spec            |  8 +++++++-
 2 files changed, 38 insertions(+), 1 deletion(-)
 create mode 100644 ltrace-rhel68373.patch

diff --git a/ltrace-rhel68373.patch b/ltrace-rhel68373.patch
new file mode 100644
index 0000000..4eb8c2a
--- /dev/null
+++ b/ltrace-rhel68373.patch
@@ -0,0 +1,31 @@
+From 4da87819752101fb9665120641454448ebc95526 Mon Sep 17 00:00:00 2001
+From: DJ Delorie <dj@delorie.com>
+Date: Wed, 17 Sep 2025 17:08:18 -0400
+Subject: ppc64le: fix couldn't find DT_PPC64_GLINK on /lib64/ld64.so.2
+
+The loader is static and doesn't have a PLT so not finding
+this there is not an issue, but it shows up in the dynamic
+loader chain, so ignore this "error".
+
+diff --git a/sysdeps/linux-gnu/ppc/plt.c b/sysdeps/linux-gnu/ppc/plt.c
+index 66a842b..321eda3 100644
+--- a/sysdeps/linux-gnu/ppc/plt.c
++++ b/sysdeps/linux-gnu/ppc/plt.c
+@@ -520,13 +520,12 @@ arch_elf_init(struct ltelf *lte, struct library *lib)
+ 		GElf_Addr glink_vma;
+ 		if (elf_load_dynamic_entry(lte, DT_PPC64_GLINK,
+ 					   &glink_vma) < 0) {
+-			fprintf(stderr, "couldn't find DT_PPC64_GLINK\n");
+-			return -1;
++			lte->arch.plt_stub_vma = 0;
++		} else {
++			/* The first glink stub starts at offset 32.  */
++			lte->arch.plt_stub_vma = glink_vma + 32;
+ 		}
+ 
+-		/* The first glink stub starts at offset 32.  */
+-		lte->arch.plt_stub_vma = glink_vma + 32;
+-
+ 	} else {
+ 		/* By exhaustion--PPC32 BSS.  */
+ 		if (elf_load_dynamic_entry(lte, DT_PLTGOT,
diff --git a/ltrace.spec b/ltrace.spec
index 1714d2e..d5f0426 100644
--- a/ltrace.spec
+++ b/ltrace.spec
@@ -1,7 +1,7 @@
 Summary: Tracks runtime library calls from dynamically linked executables
 Name: ltrace
 Version: 0.7.91
-Release: 52%{?dist}
+Release: 53%{?dist}
 # In coordination with Juan Céspedes, upstream is now officially on gitlab.
 # We are going to being sending all of our Fedora patches upstream to gitlab.
 URL: https://gitlab.com/cespedes/ltrace
@@ -134,6 +134,8 @@ Patch36: ltrace-0.7.91-ppc64le-scv.patch
 
 Patch37: ltrace-0.7.91-W-use-after-free.patch
 
+Patch38: ltrace-rhel68373.patch
+
 %description
 Ltrace is a debugging program which runs a specified command until the
 command exits.  While the command is executing, ltrace intercepts and
@@ -183,6 +185,7 @@ execution of processes.
 %patch35 -p1
 %patch36 -p1
 %patch37 -p1
+%patch38 -p1
 
 %build
 autoreconf -i
@@ -210,6 +213,9 @@ echo ====================TESTING END=====================
 %{_datadir}/ltrace
 
 %changelog
+* Wed Sep 17 2025 DJ Delorie <dj@redhat.com> - 0.7.91-53
+- Resolves "couldn't find DT_PPC64_GLINK" bug (RHEL-68373)
+
 * Tue Oct 29 2024 Troy Dawson <tdawson@redhat.com> - 0.7.91-52
 - Bump release for October 2024 mass rebuild:
   Resolves: RHEL-64018