- Fix a race during attaching to dying threads; backport (BZ 209445).
- Testcase of unwinding has now marked its unsolvable cases (for BZ
140532).
- Resolves: rhbz#209445
- Related: rhbz#140532
This commit is contained in:
Jan Kratochvil
parent
dfe7fd4669
commit
2a21fb50ae
|
|
@ -51,7 +51,7 @@ diff -u -rupN gdb-6.5-ppc/gdb/testsuite/gdb.base/bt-ppc.c gdb-6.5/gdb/testsuite/
|
|||
diff -u -rupN gdb-6.5-ppc/gdb/testsuite/gdb.base/bt-ppc.exp gdb-6.5/gdb/testsuite/gdb.base/bt-ppc.exp
|
||||
--- gdb-6.5-ppc/gdb/testsuite/gdb.base/bt-ppc.exp 1969-12-31 19:00:00.000000000 -0500
|
||||
+++ gdb-6.5/gdb/testsuite/gdb.base/bt-ppc.exp 2007-01-12 21:27:25.000000000 -0500
|
||||
@@ -0,0 +1,87 @@
|
||||
@@ -0,0 +1,99 @@
|
||||
+# Copyright 2006, 2007 Free Software Foundation, Inc.
|
||||
+
|
||||
+# This program is free software; you can redistribute it and/or modify
|
||||
|
|
@ -122,6 +122,18 @@ diff -u -rupN gdb-6.5-ppc/gdb/testsuite/gdb.base/bt-ppc.exp gdb-6.5/gdb/testsuit
|
|||
+ # `\\.?' prefixes are needed for ppc64 without `debug' (another bug).
|
||||
+
|
||||
+ set show [concat $opts $addons]
|
||||
+ if [regexp {^-fno-asynchronous-unwind-tables (-fpie -pie )?-O2$} $show] {
|
||||
+ # We get correct unwind but with two excessive "??" entries
|
||||
+ # due to undetectable inserted alignment entry.
|
||||
+ # With -fa-u-t we have correct FDE, without -O2 we have frame pointer.
|
||||
+ # 1 0x0000003acb631980 in abort () from /lib64/libc.so.6
|
||||
+ # 2 0x0000000000400489 in func0 ()
|
||||
+ # 3 0x00000000004004d0 in ?? ()
|
||||
+ # 4 0x0000000000400499 in func1 ()
|
||||
+ # 5 0x00007fffc5442410 in ?? ()
|
||||
+ # 6 0x00000000004004b9 in main ()
|
||||
+ setup_xfail "x86_64-*-*"
|
||||
+ }
|
||||
+ gdb_test_multiple "bt" "Correct unwind for: $show" {
|
||||
+ -re "\r\n#\[0-9\]\[^\r\n\]* in \\.?func0 \\(\[^\r\n\]*\r\n#\[0-9\]\[^\r\n\]* in \\.?func1 \\(\[^\r\n\]*\r\n#\[0-9\]\[^\r\n\]* in \\.?main \\(\[^\r\n\]*\r\n$gdb_prompt $" {
|
||||
+ pass "Correct unwind for: $show"
|
||||
|
|
|
|||
|
|
@ -333,3 +333,168 @@ https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=224128
|
|||
#
|
||||
# test "set variable" for type "short *"
|
||||
#
|
||||
|
||||
|
||||
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=209445
|
||||
|
||||
|
||||
[ backported ]
|
||||
2006-12-31 Daniel Jacobowitz <dan@codesourcery.com>
|
||||
|
||||
* linux-nat.c (lin_lwp_attach_lwp): Return a status. Do not
|
||||
add the LWP to our list until we are attached. Warn instead
|
||||
of erroring if the attach fails.
|
||||
* linux-nat.h (lin_lwp_attach_lwp): New prototype.
|
||||
* linux-thread-db.c (attach_thread): Call lin_lwp_attach_lwp
|
||||
directly. Do not add the thread to our list until we are
|
||||
successfully attached.
|
||||
* config/nm-linux.h (lin_lwp_attach_lwp, ATTACH_LWP): Delete.
|
||||
|
||||
|
||||
--- ./gdb/linux-nat.c 20 Nov 2006 21:47:06 -0000 1.51
|
||||
+++ ./gdb/linux-nat.c 31 Dec 2006 21:04:51 -0000 1.52
|
||||
@@ -915,12 +915,13 @@ exit_lwp (struct lwp_info *lp)
|
||||
|
||||
/* Attach to the LWP specified by PID. If VERBOSE is non-zero, print
|
||||
a message telling the user that a new LWP has been added to the
|
||||
- process. */
|
||||
+ process. Return 0 if successful or -1 if the new LWP could not
|
||||
+ be attached. */
|
||||
|
||||
-void
|
||||
+int
|
||||
lin_lwp_attach_lwp (ptid_t ptid, int verbose)
|
||||
{
|
||||
- struct lwp_info *lp, *found_lp;
|
||||
+ struct lwp_info *lp;
|
||||
|
||||
gdb_assert (is_lwp (ptid));
|
||||
|
||||
@@ -932,12 +933,7 @@ lin_lwp_attach_lwp (ptid_t ptid, int ver
|
||||
sigprocmask (SIG_BLOCK, &blocked_mask, NULL);
|
||||
}
|
||||
|
||||
- if (verbose)
|
||||
- printf_filtered (_("[New %s]\n"), target_pid_to_str (ptid));
|
||||
-
|
||||
- found_lp = lp = find_lwp_pid (ptid);
|
||||
- if (lp == NULL)
|
||||
- lp = add_lwp (ptid);
|
||||
+ lp = find_lwp_pid (ptid);
|
||||
|
||||
/* We assume that we're already attached to any LWP that has an id
|
||||
equal to the overall process id, and to any LWP that is already
|
||||
@@ -945,14 +941,25 @@ lin_lwp_attach_lwp (ptid_t ptid, int ver
|
||||
and we've had PID wraparound since we last tried to stop all threads,
|
||||
this assumption might be wrong; fortunately, this is very unlikely
|
||||
to happen. */
|
||||
- if (GET_LWP (ptid) != GET_PID (ptid) && found_lp == NULL)
|
||||
+ if (GET_LWP (ptid) != GET_PID (ptid) && lp == NULL)
|
||||
{
|
||||
pid_t pid;
|
||||
int status;
|
||||
|
||||
if (ptrace (PTRACE_ATTACH, GET_LWP (ptid), 0, 0) < 0)
|
||||
- error (_("Can't attach %s: %s"), target_pid_to_str (ptid),
|
||||
- safe_strerror (errno));
|
||||
+ {
|
||||
+ /* If we fail to attach to the thread, issue a warning,
|
||||
+ but continue. One way this can happen is if thread
|
||||
+ creation is interrupted; as of Linux 2.6.19, a kernel
|
||||
+ bug may place threads in the thread list and then fail
|
||||
+ to create them. */
|
||||
+ warning (_("Can't attach %s: %s"), target_pid_to_str (ptid),
|
||||
+ safe_strerror (errno));
|
||||
+ return -1;
|
||||
+ }
|
||||
+
|
||||
+ if (lp == NULL)
|
||||
+ lp = add_lwp (ptid);
|
||||
|
||||
if (debug_linux_nat)
|
||||
fprintf_unfiltered (gdb_stdlog,
|
||||
@@ -990,8 +997,15 @@ lin_lwp_attach_lwp (ptid_t ptid, int ver
|
||||
threads. Note that this won't have already been done since
|
||||
the main thread will have, we assume, been stopped by an
|
||||
attach from a different layer. */
|
||||
+ if (lp == NULL)
|
||||
+ lp = add_lwp (ptid);
|
||||
lp->stopped = 1;
|
||||
}
|
||||
+
|
||||
+ if (verbose)
|
||||
+ printf_filtered (_("[New %s]\n"), target_pid_to_str (ptid));
|
||||
+
|
||||
+ return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
--- ./gdb/linux-nat.h 20 Nov 2006 21:47:06 -0000 1.13
|
||||
+++ ./gdb/linux-nat.h 31 Dec 2006 21:04:51 -0000 1.14
|
||||
@@ -80,6 +80,8 @@ extern void linux_enable_event_reporting
|
||||
extern ptid_t linux_handle_extended_wait (int pid, int status,
|
||||
struct target_waitstatus *ourstatus);
|
||||
|
||||
+extern int lin_lwp_attach_lwp (ptid_t ptid, int verbose);
|
||||
+
|
||||
/* Iterator function for lin-lwp's lwp list. */
|
||||
struct lwp_info *iterate_over_lwps (int (*callback) (struct lwp_info *,
|
||||
void *),
|
||||
--- ./gdb/config/nm-linux.h 28 Nov 2006 19:45:07 -0000 1.27
|
||||
+++ ./gdb/config/nm-linux.h 31 Dec 2006 21:04:51 -0000 1.28
|
||||
@@ -1,6 +1,6 @@
|
||||
/* Native support for GNU/Linux.
|
||||
|
||||
- Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005
|
||||
+ Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
|
||||
Free Software Foundation, Inc.
|
||||
|
||||
This file is part of GDB.
|
||||
@@ -25,9 +25,6 @@ struct target_ops;
|
||||
/* GNU/Linux is SVR4-ish but its /proc file system isn't. */
|
||||
#undef USE_PROC_FS
|
||||
|
||||
-extern void lin_lwp_attach_lwp (ptid_t ptid, int verbose);
|
||||
-#define ATTACH_LWP(ptid, verbose) lin_lwp_attach_lwp ((ptid), (verbose))
|
||||
-
|
||||
extern void lin_thread_get_thread_signals (sigset_t *mask);
|
||||
#define GET_THREAD_SIGNALS(mask) lin_thread_get_thread_signals (mask)
|
||||
|
||||
--- gdb-6.6/gdb-orig/linux-thread-db.c 2007-01-30 14:10:38.000000000 -0500
|
||||
+++ gdb-6.6/gdb/linux-thread-db.c 2007-01-30 14:16:22.000000000 -0500
|
||||
@@ -678,6 +678,13 @@
|
||||
|
||||
check_thread_signals ();
|
||||
|
||||
+ if (ti_p->ti_state == TD_THR_UNKNOWN || ti_p->ti_state == TD_THR_ZOMBIE)
|
||||
+ return; /* A zombie thread -- do not attach. */
|
||||
+
|
||||
+ /* Under GNU/Linux, we have to attach to each and every thread. */
|
||||
+ if (lin_lwp_attach_lwp (BUILD_LWP (ti_p->ti_lid, GET_PID (ptid)), 0) < 0)
|
||||
+ return;
|
||||
+
|
||||
/* Add the thread to GDB's thread list. */
|
||||
tp = add_thread (ptid);
|
||||
tp->private = xmalloc (sizeof (struct private_thread_info));
|
||||
@@ -686,20 +693,10 @@
|
||||
if (verbose)
|
||||
printf_unfiltered (_("[New %s]\n"), target_pid_to_str (ptid));
|
||||
|
||||
- if (ti_p->ti_state == TD_THR_UNKNOWN || ti_p->ti_state == TD_THR_ZOMBIE)
|
||||
- return; /* A zombie thread -- do not attach. */
|
||||
-
|
||||
- new_ptid = BUILD_LWP (ti_p->ti_lid, GET_PID (ptid));
|
||||
-
|
||||
- /* Under GNU/Linux, we have to attach to each and every thread. */
|
||||
-#ifdef ATTACH_LWP
|
||||
- ATTACH_LWP (new_ptid, 0);
|
||||
-#endif
|
||||
-
|
||||
/* Notify any observers of a new linux thread. This
|
||||
would include any linux platforms that have to insert hardware
|
||||
watchpoints on every thread. */
|
||||
- observer_notify_linux_new_thread (new_ptid);
|
||||
+ observer_notify_linux_new_thread (BUILD_LWP (ti_p->ti_lid, GET_PID (ptid)));
|
||||
|
||||
/* Enable thread event reporting for this thread. */
|
||||
err = td_thr_event_enable_p (th_p, 1);
|
||||
|
|
|
|||
6
gdb.spec
6
gdb.spec
|
|
@ -11,7 +11,7 @@ Name: gdb
|
|||
Version: 6.6
|
||||
|
||||
# The release always contains a leading reserved number, start it at 1.
|
||||
Release: 2%{?dist}
|
||||
Release: 3%{?dist}
|
||||
|
||||
License: GPL
|
||||
Group: Development/Debuggers
|
||||
|
|
@ -591,6 +591,10 @@ fi
|
|||
# don't include the files in include, they are part of binutils
|
||||
|
||||
%changelog
|
||||
* Mon Feb 5 2007 Jan Kratochvil <jan.kratochvil@redhat.com> - 6.6-3
|
||||
- Fix a race during attaching to dying threads; backport (BZ 209445).
|
||||
- Testcase of unwinding has now marked its unsolvable cases (for BZ 140532).
|
||||
|
||||
* Fri Jan 26 2007 Jan Kratochvil <jan.kratochvil@redhat.com> - 6.6-2
|
||||
- Backported post gdb-6.6 release PPC `show endian' fixup.
|
||||
- Fix displaying of numeric char arrays as strings (BZ 224128).
|
||||
|
|
|
|||
Loading…
Reference in New Issue