You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
239 lines
8.4 KiB
239 lines
8.4 KiB
6 months ago
|
From FEDORA_PATCHES Mon Sep 17 00:00:00 2001
|
||
|
|
From: Fedora GDB patches <invalid@email.com>
|
||
|
|
Date: Fri, 27 Oct 2017 21:07:50 +0200
|
||
|
|
Subject: gdb-6.6-buildid-locate-solib-missing-ids.patch
|
||
|
|
|
||
|
|
;; Fix loading of core files without build-ids but with build-ids in executables.
|
||
|
|
;; Load strictly build-id-checked core files only if no executable is specified
|
||
|
|
;; (Jan Kratochvil, RH BZ 1339862).
|
||
|
|
;;=push+jan
|
||
|
|
|
||
|
|
gdb returns an incorrect back trace when applying a debuginfo
|
||
|
|
https://bugzilla.redhat.com/show_bug.cgi?id=1339862
|
||
|
|
|
||
|
|
diff --git a/gdb/solib-svr4.c b/gdb/solib-svr4.c
|
||
|
|
--- a/gdb/solib-svr4.c
|
||
|
|
+++ b/gdb/solib-svr4.c
|
||
|
|
@@ -1250,14 +1250,28 @@ svr4_read_so_list (svr4_info *info, CORE_ADDR lm, CORE_ADDR prev_lm,
|
||
|
|
}
|
||
|
|
|
||
|
|
{
|
||
|
|
- struct bfd_build_id *build_id;
|
||
|
|
+ struct bfd_build_id *build_id = NULL;
|
||
|
|
|
||
|
|
strncpy (newobj->so_original_name, buffer.get (), SO_NAME_MAX_PATH_SIZE - 1);
|
||
|
|
newobj->so_original_name[SO_NAME_MAX_PATH_SIZE - 1] = '\0';
|
||
|
|
/* May get overwritten below. */
|
||
|
|
strcpy (newobj->so_name, newobj->so_original_name);
|
||
|
|
|
||
|
|
- build_id = build_id_addr_get (((lm_info_svr4 *) newobj->lm_info)->l_ld);
|
||
|
|
+ /* In the case the main executable was found according to its build-id
|
||
|
|
+ (from a core file) prevent loading a different build of a library
|
||
|
|
+ with accidentally the same SO_NAME.
|
||
|
|
+
|
||
|
|
+ It suppresses bogus backtraces (and prints "??" there instead) if
|
||
|
|
+ the on-disk files no longer match the running program version.
|
||
|
|
+
|
||
|
|
+ If the main executable was not loaded according to its build-id do
|
||
|
|
+ not do any build-id checking of the libraries. There may be missing
|
||
|
|
+ build-ids dumped in the core file and we would map all the libraries
|
||
|
|
+ to the only existing file loaded that time - the executable. */
|
||
|
|
+ if (current_program_space->symfile_object_file != NULL
|
||
|
|
+ && (current_program_space->symfile_object_file->flags
|
||
|
|
+ & OBJF_BUILD_ID_CORE_LOADED) != 0)
|
||
|
|
+ build_id = build_id_addr_get (li->l_ld);
|
||
|
|
if (build_id != NULL)
|
||
|
|
{
|
||
|
|
char *name, *build_id_filename;
|
||
|
|
@@ -1272,23 +1286,7 @@ svr4_read_so_list (svr4_info *info, CORE_ADDR lm, CORE_ADDR prev_lm,
|
||
|
|
xfree (name);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
- {
|
||
|
|
- debug_print_missing (newobj->so_name, build_id_filename);
|
||
|
|
-
|
||
|
|
- /* In the case the main executable was found according to
|
||
|
|
- its build-id (from a core file) prevent loading
|
||
|
|
- a different build of a library with accidentally the
|
||
|
|
- same SO_NAME.
|
||
|
|
-
|
||
|
|
- It suppresses bogus backtraces (and prints "??" there
|
||
|
|
- instead) if the on-disk files no longer match the
|
||
|
|
- running program version. */
|
||
|
|
-
|
||
|
|
- if (current_program_space->symfile_object_file != NULL
|
||
|
|
- && (current_program_space->symfile_object_file->flags
|
||
|
|
- & OBJF_BUILD_ID_CORE_LOADED) != 0)
|
||
|
|
- newobj->so_name[0] = 0;
|
||
|
|
- }
|
||
|
|
+ debug_print_missing (newobj->so_name, build_id_filename);
|
||
|
|
|
||
|
|
xfree (build_id_filename);
|
||
|
|
xfree (build_id);
|
||
|
|
diff --git a/gdb/testsuite/gdb.base/gcore-buildid-exec-but-not-solib-lib.c b/gdb/testsuite/gdb.base/gcore-buildid-exec-but-not-solib-lib.c
|
||
|
|
new file mode 100644
|
||
|
|
--- /dev/null
|
||
|
|
+++ b/gdb/testsuite/gdb.base/gcore-buildid-exec-but-not-solib-lib.c
|
||
|
|
@@ -0,0 +1,21 @@
|
||
|
|
+/* Copyright 2010 Free Software Foundation, Inc.
|
||
|
|
+
|
||
|
|
+ This file is part of GDB.
|
||
|
|
+
|
||
|
|
+ This program is free software; you can redistribute it and/or modify
|
||
|
|
+ it under the terms of the GNU General Public License as published by
|
||
|
|
+ the Free Software Foundation; either version 3 of the License, or
|
||
|
|
+ (at your option) any later version.
|
||
|
|
+
|
||
|
|
+ This program is distributed in the hope that it will be useful,
|
||
|
|
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
+ GNU General Public License for more details.
|
||
|
|
+
|
||
|
|
+ You should have received a copy of the GNU General Public License
|
||
|
|
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
||
|
|
+
|
||
|
|
+void
|
||
|
|
+lib (void)
|
||
|
|
+{
|
||
|
|
+}
|
||
|
|
diff --git a/gdb/testsuite/gdb.base/gcore-buildid-exec-but-not-solib-main.c b/gdb/testsuite/gdb.base/gcore-buildid-exec-but-not-solib-main.c
|
||
|
|
new file mode 100644
|
||
|
|
--- /dev/null
|
||
|
|
+++ b/gdb/testsuite/gdb.base/gcore-buildid-exec-but-not-solib-main.c
|
||
|
|
@@ -0,0 +1,25 @@
|
||
|
|
+/* Copyright 2010 Free Software Foundation, Inc.
|
||
|
|
+
|
||
|
|
+ This file is part of GDB.
|
||
|
|
+
|
||
|
|
+ This program is free software; you can redistribute it and/or modify
|
||
|
|
+ it under the terms of the GNU General Public License as published by
|
||
|
|
+ the Free Software Foundation; either version 3 of the License, or
|
||
|
|
+ (at your option) any later version.
|
||
|
|
+
|
||
|
|
+ This program is distributed in the hope that it will be useful,
|
||
|
|
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
+ GNU General Public License for more details.
|
||
|
|
+
|
||
|
|
+ You should have received a copy of the GNU General Public License
|
||
|
|
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
||
|
|
+
|
||
|
|
+extern void lib (void);
|
||
|
|
+
|
||
|
|
+int
|
||
|
|
+main (void)
|
||
|
|
+{
|
||
|
|
+ lib ();
|
||
|
|
+ return 0;
|
||
|
|
+}
|
||
|
|
diff --git a/gdb/testsuite/gdb.base/gcore-buildid-exec-but-not-solib.exp b/gdb/testsuite/gdb.base/gcore-buildid-exec-but-not-solib.exp
|
||
|
|
new file mode 100644
|
||
|
|
--- /dev/null
|
||
|
|
+++ b/gdb/testsuite/gdb.base/gcore-buildid-exec-but-not-solib.exp
|
||
|
|
@@ -0,0 +1,105 @@
|
||
|
|
+# Copyright 2016 Free Software Foundation, Inc.
|
||
|
|
+
|
||
|
|
+# This program is free software; you can redistribute it and/or modify
|
||
|
|
+# it under the terms of the GNU General Public License as published by
|
||
|
|
+# the Free Software Foundation; either version 3 of the License, or
|
||
|
|
+# (at your option) any later version.
|
||
|
|
+#
|
||
|
|
+# This program is distributed in the hope that it will be useful,
|
||
|
|
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
+# GNU General Public License for more details.
|
||
|
|
+#
|
||
|
|
+# You should have received a copy of the GNU General Public License
|
||
|
|
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||
|
|
+
|
||
|
|
+if {[skip_shlib_tests]} {
|
||
|
|
+ return 0
|
||
|
|
+}
|
||
|
|
+
|
||
|
|
+set testfile "gcore-buildid-exec-but-not-solib"
|
||
|
|
+set srcmainfile ${testfile}-main.c
|
||
|
|
+set srclibfile ${testfile}-lib.c
|
||
|
|
+set libfile [standard_output_file ${testfile}-lib.so]
|
||
|
|
+set objfile [standard_output_file ${testfile}-main.o]
|
||
|
|
+set executable ${testfile}-main
|
||
|
|
+set binfile [standard_output_file ${executable}]
|
||
|
|
+set gcorefile [standard_output_file ${executable}.gcore]
|
||
|
|
+set outdir [file dirname $binfile]
|
||
|
|
+
|
||
|
|
+if { [gdb_compile_shlib ${srcdir}/${subdir}/${srclibfile} ${libfile} "debug additional_flags=-Wl,--build-id"] != ""
|
||
|
|
+ || [gdb_compile ${srcdir}/${subdir}/${srcmainfile} ${objfile} object {debug}] != "" } {
|
||
|
|
+ unsupported "-Wl,--build-id compilation failed"
|
||
|
|
+ return -1
|
||
|
|
+}
|
||
|
|
+set opts [list debug shlib=${libfile} "additional_flags=-Wl,--build-id"]
|
||
|
|
+if { [gdb_compile ${objfile} ${binfile} executable $opts] != "" } {
|
||
|
|
+ unsupported "-Wl,--build-id compilation failed"
|
||
|
|
+ return -1
|
||
|
|
+}
|
||
|
|
+
|
||
|
|
+clean_restart $executable
|
||
|
|
+gdb_load_shlib $libfile
|
||
|
|
+
|
||
|
|
+# Does this gdb support gcore?
|
||
|
|
+set test "help gcore"
|
||
|
|
+gdb_test_multiple $test $test {
|
||
|
|
+ -re "Undefined command: .gcore.*\r\n$gdb_prompt $" {
|
||
|
|
+ # gcore command not supported -- nothing to test here.
|
||
|
|
+ unsupported "gdb does not support gcore on this target"
|
||
|
|
+ return -1;
|
||
|
|
+ }
|
||
|
|
+ -re "Save a core file .*\r\n$gdb_prompt $" {
|
||
|
|
+ pass $test
|
||
|
|
+ }
|
||
|
|
+}
|
||
|
|
+
|
||
|
|
+if { ![runto lib] } then {
|
||
|
|
+ return -1
|
||
|
|
+}
|
||
|
|
+
|
||
|
|
+set escapedfilename [string_to_regexp ${gcorefile}]
|
||
|
|
+
|
||
|
|
+set test "save a corefile"
|
||
|
|
+gdb_test_multiple "gcore ${gcorefile}" $test {
|
||
|
|
+ -re "Saved corefile ${escapedfilename}\r\n$gdb_prompt $" {
|
||
|
|
+ pass $test
|
||
|
|
+ }
|
||
|
|
+ -re "Can't create a corefile\r\n$gdb_prompt $" {
|
||
|
|
+ unsupported $test
|
||
|
|
+ return -1
|
||
|
|
+ }
|
||
|
|
+}
|
||
|
|
+
|
||
|
|
+# Now restart gdb and load the corefile.
|
||
|
|
+
|
||
|
|
+clean_restart $executable
|
||
|
|
+gdb_load_shlib $libfile
|
||
|
|
+
|
||
|
|
+set buildid [build_id_debug_filename_get $libfile]
|
||
|
|
+
|
||
|
|
+regsub {\.debug$} $buildid {} buildid
|
||
|
|
+
|
||
|
|
+set debugdir [standard_output_file ${testfile}-debugdir]
|
||
|
|
+file delete -force -- $debugdir
|
||
|
|
+
|
||
|
|
+file mkdir $debugdir/[file dirname $libfile]
|
||
|
|
+file copy $libfile $debugdir/${libfile}
|
||
|
|
+
|
||
|
|
+file mkdir $debugdir/[file dirname $buildid]
|
||
|
|
+file copy $libfile $debugdir/${buildid}
|
||
|
|
+
|
||
|
|
+remote_exec build "ln -s /lib ${debugdir}/"
|
||
|
|
+remote_exec build "ln -s /lib64 ${debugdir}/"
|
||
|
|
+# /usr is not needed, all the libs are in /lib64: libm.so.6 libc.so.6 ld-linux-x86-64.so.2
|
||
|
|
+
|
||
|
|
+gdb_test "set solib-absolute-prefix $debugdir"
|
||
|
|
+
|
||
|
|
+gdb_test_no_output "set debug-file-directory $debugdir" "set debug-file-directory"
|
||
|
|
+
|
||
|
|
+gdb_test "core ${gcorefile}" "Core was generated by .*" "re-load generated corefile"
|
||
|
|
+
|
||
|
|
+gdb_test "frame" "#0 \[^\r\n\]* lib .*" "library got loaded"
|
||
|
|
+
|
||
|
|
+gdb_test "bt"
|
||
|
|
+gdb_test "info shared"
|