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247 lines
6.8 KiB
247 lines
6.8 KiB
From FEDORA_PATCHES Mon Sep 17 00:00:00 2001 |
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From: Fedora GDB patches <invalid@email.com> |
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Date: Fri, 27 Oct 2017 21:07:50 +0200 |
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Subject: gdb-6.3-mapping-zero-inode-test.patch |
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;; Test GCORE for shmid 0 shared memory mappings. |
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;;=fedoratest: But it is broken anyway, sometimes the case being tested is not reproducible. |
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diff --git a/gdb/testsuite/gdb.base/gcore-shmid0.c b/gdb/testsuite/gdb.base/gcore-shmid0.c |
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new file mode 100644 |
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--- /dev/null |
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+++ b/gdb/testsuite/gdb.base/gcore-shmid0.c |
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@@ -0,0 +1,128 @@ |
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+/* Copyright 2007, 2009 Free Software Foundation, Inc. |
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+ |
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+ This file is part of GDB. |
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+ |
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+ This program is free software; you can redistribute it and/or modify |
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+ it under the terms of the GNU General Public License as published by |
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+ the Free Software Foundation; either version 2 of the License, or (at |
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+ your option) any later version. |
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+ |
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+ This program is distributed in the hope that it will be useful, but |
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+ WITHOUT ANY WARRANTY; without even the implied warranty of |
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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+ General Public License for more details. |
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+ |
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+ You should have received a copy of the GNU General Public License |
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+ along with this program; if not, write to the Free Software |
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+ Foundation, Inc., 59 Temple Place - Suite 330, |
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+ Boston, MA 02111-1307, USA. */ |
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+ |
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+/* |
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+ * Test GDB's handling of gcore for mapping with a name but zero inode. |
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+ */ |
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+ |
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+#include <sys/ipc.h> |
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+#include <sys/shm.h> |
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+#include <stdio.h> |
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+#include <errno.h> |
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+#include <stdlib.h> |
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+#include <unistd.h> |
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+#include <assert.h> |
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+#include <time.h> |
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+ |
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+/* The same test running in a parallel testsuite may steal us the zero SID, |
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+ even if we never get any EEXIST. Just try a while. */ |
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+ |
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+#define TIMEOUT_SEC 10 |
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+ |
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+static volatile int v; |
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+ |
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+static void |
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+initialized (void) |
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+{ |
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+ v++; |
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+} |
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+ |
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+static void |
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+unresolved (void) |
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+{ |
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+ v++; |
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+} |
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+ |
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+int |
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+main (void) |
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+{ |
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+ int sid; |
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+ unsigned int *addr = (void *) -1L; |
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+ int attempt, round = 0; |
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+ time_t ts_start, ts; |
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+ |
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+ if (time (&ts_start) == (time_t) -1) |
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+ { |
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+ printf ("time (): %m\n"); |
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+ exit (1); |
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+ } |
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+ |
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+ /* The generated SID will cycle with an increment of 32768, attempt until it |
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+ * wraps to 0. */ |
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+ |
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+ for (attempt = 0; addr == (void *) -1L; attempt++) |
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+ { |
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+ /* kernel-2.6.25-8.fc9.x86_64 just never returns the value 0 by |
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+ shmget(2). shmget returns SID range 0..1<<31 in steps of 32768, |
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+ 0x1000 should be enough but wrap the range it to be sure. */ |
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+ |
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+ if (attempt > 0x21000) |
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+ { |
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+ if (time (&ts) == (time_t) -1) |
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+ { |
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+ printf ("time (): %m\n"); |
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+ exit (1); |
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+ } |
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+ |
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+ if (ts >= ts_start && ts < ts_start + TIMEOUT_SEC) |
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+ { |
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+ attempt = 0; |
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+ round++; |
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+ continue; |
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+ } |
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+ |
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+ printf ("Problem is not reproducible on this kernel (attempt %d, " |
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+ "round %d)\n", attempt, round); |
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+ unresolved (); |
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+ exit (1); |
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+ } |
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+ |
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+ sid = shmget ((key_t) rand (), 0x1000, IPC_CREAT | IPC_EXCL | 0777); |
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+ if (sid == -1) |
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+ { |
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+ if (errno == EEXIST) |
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+ continue; |
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+ |
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+ printf ("shmget (%d, 0x1000, IPC_CREAT): errno %d\n", 0, errno); |
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+ exit (1); |
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+ } |
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+ |
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+ /* Use SID only if it is 0, retry it otherwise. */ |
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+ |
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+ if (sid == 0) |
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+ { |
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+ addr = shmat (sid, NULL, SHM_RND); |
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+ if (addr == (void *) -1L) |
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+ { |
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+ printf ("shmat (%d, NULL, SHM_RND): errno %d\n", sid, |
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+ errno); |
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+ exit (1); |
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+ } |
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+ } |
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+ if (shmctl (sid, IPC_RMID, NULL) != 0) |
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+ { |
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+ printf ("shmctl (%d, IPC_RMID, NULL): errno %d\n", sid, errno); |
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+ exit (1); |
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+ } |
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+ } |
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+ |
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+ initialized (); |
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+ |
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+ return 0; |
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+} |
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diff --git a/gdb/testsuite/gdb.base/gcore-shmid0.exp b/gdb/testsuite/gdb.base/gcore-shmid0.exp |
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new file mode 100644 |
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--- /dev/null |
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+++ b/gdb/testsuite/gdb.base/gcore-shmid0.exp |
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@@ -0,0 +1,101 @@ |
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+# Copyright 2007, 2009 Free Software Foundation, Inc. |
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+ |
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+# This program is free software; you can redistribute it and/or modify |
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+# it under the terms of the GNU General Public License as published by |
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+# the Free Software Foundation; either version 2 of the License, or |
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+# (at your option) any later version. |
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+# |
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+# This program is distributed in the hope that it will be useful, |
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+# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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+# GNU General Public License for more details. |
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+# |
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+# You should have received a copy of the GNU General Public License |
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+# along with this program; if not, write to the Free Software |
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+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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+ |
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+# Test GDB's handling of gcore for mapping with a name but zero inode. |
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+ |
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+if { [prepare_for_testing gcore-shmid0.exp gcore-shmid0] } { |
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+ return -1 |
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+} |
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+ |
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+# Does this gdb support gcore? |
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+set test "help gcore" |
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+gdb_test_multiple $test $test { |
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+ -re "Undefined command: .gcore.*$gdb_prompt $" { |
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+ # gcore command not supported -- nothing to test here. |
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+ unsupported "gdb does not support gcore on this target" |
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+ return -1; |
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+ } |
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+ -re "Save a core file .*$gdb_prompt $" { |
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+ pass $test |
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+ } |
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+} |
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+ |
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+if { ! [ runto_main ] } then { |
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+ untested gcore-shmid0.exp |
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+ return -1 |
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+} |
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+ |
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+gdb_breakpoint "initialized" |
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+gdb_breakpoint "unresolved" |
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+ |
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+set oldtimeout $timeout |
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+set timeout [expr $oldtimeout + 120] |
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+ |
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+set test "Continue to initialized." |
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+gdb_test_multiple "continue" $test { |
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+ -re "Breakpoint .*, initialized .* at .*\r\n$gdb_prompt $" { |
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+ pass $test |
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+ } |
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+ -re "Breakpoint .*, unresolved .* at .*\r\n$gdb_prompt $" { |
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+ set timeout $oldtimeout |
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+ unsupported $test |
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+ return -1 |
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+ } |
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+} |
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+set timeout $oldtimeout |
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+ |
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+set escapedfilename [string_to_regexp [standard_output_file gcore-shmid0.test]] |
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+ |
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+set test "save a corefile" |
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+gdb_test_multiple "gcore [standard_output_file gcore-shmid0.test]" $test { |
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+ -re "Saved corefile ${escapedfilename}\[\r\n\]+$gdb_prompt $" { |
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+ pass $test |
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+ } |
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+ -re "Can't create a corefile\[\r\n\]+$gdb_prompt $" { |
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+ unsupported $test |
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+ } |
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+} |
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+ |
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+# Be sure to remove the handle first. |
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+# But it would get removed even on a kill by GDB as the handle is already |
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+# deleted, just it is still attached. |
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+gdb_continue_to_end "finish" |
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+ |
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+set test "core-file command" |
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+gdb_test_multiple "core-file [standard_output_file gcore-shmid0.test]" $test { |
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+ -re ".* program is being debugged already.*y or n. $" { |
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+ # gdb_load may connect us to a gdbserver. |
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+ send_gdb "y\n" |
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+ exp_continue; |
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+ } |
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+ -re "Core was generated by .*\r\n\#0 .*\\\(\\\).*\r\n$gdb_prompt $" { |
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+ # The filename does not fit there anyway so do not check it. |
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+ pass $test |
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+ } |
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+ -re ".*registers from core file: File in wrong format.* $" { |
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+ fail "core-file command (could not read registers from core file)" |
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+ } |
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+} |
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+ |
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+set test "backtrace" |
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+gdb_test_multiple "bt" $test { |
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+ -re "#0 *initialized \\\(\\\) at .*#1 .* main \\\(.*$gdb_prompt $" { |
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+ pass $test |
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+ } |
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+ -re "#0 *initialized \\\(\\\) at .*Cannot access memory at address .*$gdb_prompt $" { |
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+ fail $test |
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+ } |
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+}
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