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- Fix lock up on loops in the solib chain (BZ 593926). 

- Import fix of TUI layout internal error (BZ 595475).
This commit is contained in:
Jan Kratochvil 2010-05-24 19:04:48 +00:00
parent 0b00d5414f
commit 2897558ca7
3 changed files with 289 additions and 1 deletions
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201
gdb-7.0-upstream.patch
View File

@ -227,3 +227,204 @@ http://sourceware.org/ml/gdb-cvs/2009-11/msg00034.html
{
language_info (1); /* Print what changed. */
}
https://bugzilla.redhat.com/show_bug.cgi?id=578136
https://bugzilla.redhat.com/show_bug.cgi?id=593926
http://sourceware.org/ml/gdb-patches/2010-04/msg00820.html
http://sourceware.org/ml/gdb-cvs/2010-04/msg00240.html
### src/gdb/ChangeLog 2010/04/23 18:09:16 1.11678
### src/gdb/ChangeLog 2010/04/23 21:44:19 1.11679
## -1,3 +1,14 @@
+2010-04-23 Daniel Jacobowitz <dan@codesourcery.com>
+ Paul Pluzhnikov <ppluzhnikov@google.com>
+ Jan Kratochvil <jan.kratochvil@redhat.com>
+
+ Fix deadlock on looped list of loaded shared objects.
+ * solib-svr4.c (LM_PREV): New function.
+ (IGNORE_FIRST_LINK_MAP_ENTRY): Use it.
+ (svr4_current_sos): Check for correct l_prev. New variables prev_lm
+ and next_lm. Clear prev_lm for solib_svr4_r_ldsomap.
+ * config/djgpp/fnchange.lst: Add translation for solib-corrupted.exp.
+
2010-04-23 Doug Evans <dje@google.com>
* configure.ac (CONFIG_SRCS): Add py-auto-load.o even if not using
--- src/gdb/solib-svr4.c 2010/03/11 22:07:02 1.130
+++ src/gdb/solib-svr4.c 2010/04/23 21:44:19 1.131
@@ -272,6 +272,16 @@
}
static CORE_ADDR
+LM_PREV (struct so_list *so)
+{
+ struct link_map_offsets *lmo = svr4_fetch_link_map_offsets ();
+ struct type *ptr_type = builtin_type (target_gdbarch)->builtin_data_ptr;
+
+ return extract_typed_address (so->lm_info->lm + lmo->l_prev_offset,
+ ptr_type);
+}
+
+static CORE_ADDR
LM_NAME (struct so_list *so)
{
struct link_map_offsets *lmo = svr4_fetch_link_map_offsets ();
@@ -284,16 +294,12 @@
static int
IGNORE_FIRST_LINK_MAP_ENTRY (struct so_list *so)
{
- struct link_map_offsets *lmo = svr4_fetch_link_map_offsets ();
- struct type *ptr_type = builtin_type (target_gdbarch)->builtin_data_ptr;
-
/* Assume that everything is a library if the dynamic loader was loaded
late by a static executable. */
if (exec_bfd && bfd_get_section_by_name (exec_bfd, ".dynamic") == NULL)
return 0;
- return extract_typed_address (so->lm_info->lm + lmo->l_prev_offset,
- ptr_type) == 0;
+ return LM_PREV (so) == 0;
}
/* Per-inferior SVR4 specific data. */
@@ -1101,7 +1107,7 @@
static struct so_list *
svr4_current_sos (void)
{
- CORE_ADDR lm;
+ CORE_ADDR lm, prev_lm;
struct so_list *head = 0;
struct so_list **link_ptr = &head;
CORE_ADDR ldsomap = 0;
@@ -1120,6 +1126,7 @@
/* Walk the inferior's link map list, and build our list of
`struct so_list' nodes. */
+ prev_lm = 0;
lm = solib_svr4_r_map (info);
while (lm)
@@ -1127,6 +1134,7 @@
struct link_map_offsets *lmo = svr4_fetch_link_map_offsets ();
struct so_list *new = XZALLOC (struct so_list);
struct cleanup *old_chain = make_cleanup (xfree, new);
+ CORE_ADDR next_lm;
new->lm_info = xmalloc (sizeof (struct lm_info));
make_cleanup (xfree, new->lm_info);
@@ -1138,14 +1146,21 @@
read_memory (lm, new->lm_info->lm, lmo->link_map_size);
- lm = LM_NEXT (new);
+ next_lm = LM_NEXT (new);
+
+ if (LM_PREV (new) != prev_lm)
+ {
+ warning (_("Corrupted shared library list"));
+ free_so (new);
+ next_lm = 0;
+ }
/* For SVR4 versions, the first entry in the link map is for the
inferior executable, so we must ignore it. For some versions of
SVR4, it has no name. For others (Solaris 2.3 for example), it
does have a name, so we can no longer use a missing name to
decide when to ignore it. */
- if (IGNORE_FIRST_LINK_MAP_ENTRY (new) && ldsomap == 0)
+ else if (IGNORE_FIRST_LINK_MAP_ENTRY (new) && ldsomap == 0)
{
info->main_lm_addr = new->lm_info->lm_addr;
free_so (new);
@@ -1182,12 +1197,18 @@
}
}
+ prev_lm = lm;
+ lm = next_lm;
+
/* On Solaris, the dynamic linker is not in the normal list of
shared objects, so make sure we pick it up too. Having
symbol information for the dynamic linker is quite crucial
for skipping dynamic linker resolver code. */
if (lm == 0 && ldsomap == 0)
- lm = ldsomap = solib_svr4_r_ldsomap (info);
+ {
+ lm = ldsomap = solib_svr4_r_ldsomap (info);
+ prev_lm = 0;
+ }
discard_cleanups (old_chain);
}
--- src/gdb/config/djgpp/fnchange.lst 2010/04/09 15:15:05 1.112
+++ src/gdb/config/djgpp/fnchange.lst 2010/04/23 21:44:19 1.113
@@ -397,6 +397,7 @@
@V@/gdb/testsuite/gdb.base/siginfo-obj.c @V@/gdb/testsuite/gdb.base/si-obj.c
@V@/gdb/testsuite/gdb.base/siginfo-addr.exp @V@/gdb/testsuite/gdb.base/si-addr.exp
@V@/gdb/testsuite/gdb.base/siginfo-obj.exp @V@/gdb/testsuite/gdb.base/si-obj.exp
+@V@/gdb/testsuite/gdb.base/solib-corrupted.exp @V@/gdb/testsuite/gdb.base/so-crptd.exp
@V@/gdb/testsuite/gdb.base/solib-disc.c @V@/gdb/testsuite/gdb.base/so-disc.c
@V@/gdb/testsuite/gdb.base/solib-display-lib.c @V@/gdb/testsuite/gdb.base/so-displib.c
@V@/gdb/testsuite/gdb.base/solib-display-main.c @V@/gdb/testsuite/gdb.base/so-dispmain.c
### src/gdb/testsuite/ChangeLog 2010/04/23 18:03:31 1.2252
### src/gdb/testsuite/ChangeLog 2010/04/23 21:44:20 1.2253
## -1,3 +1,8 @@
+2010-04-23 Jan Kratochvil <jan.kratochvil@redhat.com>
+
+ Fix deadlock on looped list of loaded shared objects.
+ * gdb.base/solib-corrupted.exp: New.
+
2010-04-23 Doug Evans <dje@google.com>
* gdb.python/py-section-script.c: New file.
--- src/gdb/testsuite/gdb.base/solib-corrupted.exp
+++ src/gdb/testsuite/gdb.base/solib-corrupted.exp 2010-05-24 18:00:52.057995000 +0000
@@ -0,0 +1,46 @@
+# Copyright 2010 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/>.
+
+set testfile "solib-corrupted"
+set srcfile start.c
+
+if { [prepare_for_testing ${testfile}.exp ${testfile} ${srcfile}] } {
+ untested ${testfile}.exp
+ return -1
+}
+
+if ![runto_main] {
+ fail "Can't run to main"
+ return
+}
+
+gdb_test "info sharedlibrary" "" "normal list"
+
+# GDB checks there for matching L_PREV.
+set test "make solibs looping"
+gdb_test_multiple "p/x _r_debug->r_map->l_next = _r_debug->r_map" $test {
+ -re "(No symbol \"_r_debug\" in current context\\.|Attempt to extract a component of a value that is not a structure pointer\\.)\r\n$gdb_prompt $" {
+ # glibc debug info is not available and it is too difficult to find and
+ # parse it from this testcase without the gdb supporting functions.
+ verbose -log "no _r_debug symbol has been found"
+ xfail $test
+ untested ${testfile}.exp
+ return
+ }
+ -re " = 0x\[0-9a-f\]+\r\n$gdb_prompt $" {
+ pass $test
+ }
+}
+gdb_test "info sharedlibrary" "warning: Corrupted shared library list\r\n.*" "corrupted list"

79
gdb-bz595475-tui-layout.patch Normal file
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@ -0,0 +1,79 @@
https://bugzilla.redhat.com/show_bug.cgi?id=586566
http://sourceware.org/ml/gdb-patches/2010-03/msg00746.html
http://sourceware.org/ml/gdb-patches/2010-05/msg00551.html
http://sourceware.org/ml/gdb-cvs/2010-03/msg00194.html
### src/gdb/ChangeLog 2010/03/19 22:00:16 1.11508
### src/gdb/ChangeLog 2010/03/20 05:17:10 1.11509
## -1,3 +1,9 @@
+2010-03-20 Daniel Jacobowitz <dan@codesourcery.com>
+
+ * tui/tui-disasm.c (tui_get_begin_asm_address): Default to
+ get_current_arch.
+ * tui/tui-layout.c (extract_display_start_addr): Likewise.
+
2010-03-19 Stan Shebs <stan@codesourcery.com>
* ax-gdb.c (gen_fetch): Handle bool.
--- src/gdb/tui/tui-disasm.c 2010/01/01 07:32:07 1.33
+++ src/gdb/tui/tui-disasm.c 2010/03/20 05:17:10 1.34
@@ -21,6 +21,7 @@
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
+#include "arch-utils.h"
#include "symtab.h"
#include "breakpoint.h"
#include "frame.h"
@@ -330,7 +331,7 @@
{
struct tui_gen_win_info *locator;
struct tui_locator_element *element;
- struct gdbarch *gdbarch = NULL;
+ struct gdbarch *gdbarch = get_current_arch ();
CORE_ADDR addr;
locator = tui_locator_win_info_ptr ();
--- src/gdb/tui/tui-layout.c 2010/01/01 07:32:07 1.36
+++ src/gdb/tui/tui-layout.c 2010/03/20 05:17:10 1.37
@@ -21,6 +21,7 @@
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
+#include "arch-utils.h"
#include "command.h"
#include "symtab.h"
#include "frame.h"
@@ -522,7 +523,7 @@
extract_display_start_addr (struct gdbarch **gdbarch_p, CORE_ADDR *addr_p)
{
enum tui_layout_type cur_layout = tui_current_layout ();
- struct gdbarch *gdbarch = NULL;
+ struct gdbarch *gdbarch = get_current_arch ();
CORE_ADDR addr;
CORE_ADDR pc;
struct symtab_and_line cursal = get_current_source_symtab_and_line ();
--- /dev/null 2010-05-24 04:43:32.632794021 +0200
+++ gdb-7.1/gdb/testsuite/gdb.base/tui-layout.exp 2010-05-24 20:13:30.000000000 +0200
@@ -0,0 +1,21 @@
+# Copyright 2010 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/>.
+
+set testfile tui-layout
+if { [prepare_for_testing ${testfile}.exp ${testfile} start.c] } {
+ return -1
+}
+
+gdb_test "layout asm"

10
gdb.spec
View File

@ -36,7 +36,7 @@ Version: 7.0.1
# The release always contains a leading reserved number, start it at 1.
# `upstream' is not a part of `name' to stay fully rpm dependencies compatible for the testing.
Release: 45%{?_with_upstream:.upstream}%{dist}
Release: 46%{?_with_upstream:.upstream}%{dist}
License: GPLv3+
Group: Development/Debuggers
@ -497,6 +497,9 @@ Patch450: gdb-bz582052-libstdc++-compat.patch
# Fix crash when using GNU IFUNC call from breakpoint condition.
Patch454: gdb-bz539590-gnu-ifunc-fix-cond.patch
# Import fix of TUI layout internal error (BZ 595475).
Patch462: gdb-bz595475-tui-layout.patch
BuildRequires: ncurses-devel%{?_isa} texinfo gettext flex bison expat-devel%{?_isa}
Requires: readline%{?_isa}
BuildRequires: readline-devel%{?_isa}
@ -767,6 +770,7 @@ rm -f gdb/jv-exp.c gdb/m2-exp.c gdb/objc-exp.c gdb/p-exp.c
%patch438 -p1
%patch450 -p1
%patch454 -p1
%patch462 -p1
# Always verify their applicability.
%patch393 -p1
%patch335 -p1
@ -1092,6 +1096,10 @@ fi
%endif
%changelog
* Mon May 24 2010 Jan Kratochvil <jan.kratochvil@redhat.com> - 7.0.1-46.fc12
- Fix lock up on loops in the solib chain (BZ 593926).
- Import fix of TUI layout internal error (BZ 595475).
* Mon Apr 26 2010 Jan Kratochvil <jan.kratochvil@redhat.com> - 7.0.1-45.fc12
- Fix crash when using GNU IFUNC call from breakpoint condition.