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[RHEL5] Workaround kernel for detaching SIGSTOPped processes (BZ 809382).

This commit is contained in:
Jan Kratochvil 2012-04-25 20:59:19 +02:00
parent fdf21a3584
commit 72cb82c2bf
2 changed files with 39 additions and 1 deletions
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29
gdb-rhel5-compat.patch Normal file
View File

@ -0,0 +1,29 @@
Index: gdb-7.2.50.20110328/gdb/linux-nat.c
===================================================================
--- gdb-7.2.50.20110328.orig/gdb/linux-nat.c 2011-03-28 18:46:16.000000000 +0200
+++ gdb-7.2.50.20110328/gdb/linux-nat.c 2011-03-28 18:47:56.000000000 +0200
@@ -1774,8 +1774,22 @@ get_pending_status (struct lwp_info *lp,
target_signal_to_string (signo));
}
- if (*status == 0 && GET_PID (lp->ptid) == pid_was_stopped)
- *status = W_STOPCODE (SIGSTOP);
+ /* Workaround RHEL-5 kernel which has unreliable PTRACE_DETACH, SIGSTOP (that
+ many TIDs are left unstopped). See RH Bug 496732. */
+ if (GET_PID (lp->ptid) == pid_was_stopped)
+ {
+ int err;
+
+ errno = 0;
+ err = kill_lwp (GET_LWP (lp->ptid), SIGSTOP);
+ if (debug_linux_nat)
+ {
+ fprintf_unfiltered (gdb_stdlog,
+ "SC: lwp kill %d %s\n",
+ err,
+ errno ? safe_strerror (errno) : "ERRNO-OK");
+ }
+ }
return 0;
}

11
gdb.spec
View File

@ -35,7 +35,7 @@ Version: 7.4.50.%{snap}
# 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: 42%{?dist}
Release: 43%{?dist}
License: GPLv3+ and GPLv3+ with exceptions and GPLv2+ and GPLv2+ with exceptions and GPL+ and LGPLv2+ and BSD and Public Domain
Group: Development/Debuggers
@ -377,6 +377,10 @@ Patch330: gdb-6.8-bz436037-reg-no-longer-active.patch
#=push: It was useful only after gdb-6.8-attach-signalled-detach-stopped.patch .
Patch331: gdb-6.8-quit-never-aborts.patch
# [RHEL5] Workaround kernel for detaching SIGSTOPped processes (BZ 809382).
#=fedora
Patch335: gdb-rhel5-compat.patch
# [RHEL5,RHEL6] Fix attaching to stopped processes.
#=fedora
Patch337: gdb-6.8-attach-signalled-detach-stopped.patch
@ -926,7 +930,9 @@ rm -f gdb/jv-exp.c gdb/m2-exp.c gdb/objc-exp.c gdb/p-exp.c
%patch642 -p1 -R
%endif
%patch337 -p1
%patch335 -p1
%if 0%{!?rhel:1} || 0%{?rhel} > 6
%patch335 -p1 -R
%patch337 -p1 -R
%endif
@ -1395,6 +1401,9 @@ fi
%endif # 0%{!?el5:1} || "%{_target_cpu}" == "noarch"
%changelog
* Wed Apr 25 2012 Jan Kratochvil <jan.kratochvil@redhat.com> - 7.4.50.20120120-43.fc17
- [RHEL5] Workaround kernel for detaching SIGSTOPped processes (BZ 809382).
* Tue Apr 24 2012 Jan Kratochvil <jan.kratochvil@redhat.com> - 7.4.50.20120120-42.fc17
- Update "set auto-load" patchset and the --with-auto-load-safe-path setting.
- [RHEL] Disable gdb-add-index even on RHEL-6 as RHEL-6.0 had too old elfutils.