[Intel-gfx] [PATCH i-g-t v4] lib/tests/igt_segfault Add unit test to test segfault handling

[Daniel Vetter]

On Fri, Jun 12, 2015 at 10:08:43AM +0000, Morton, Derek J wrote:
> This is the same as the previously submitted patch except the text
> encoding should (hopefully) now be correct.

Hm, I failed to push out my igt branch with the patch I applied before
vacation, done that now. Is there any material difference? Or just the
content-enconding thing?
-Daniel

> 
> //Derek
> 
> >
> >
> >-----Original Message-----
> >From: Morton, Derek J 
> >Sent: Friday, June 12, 2015 11:05 AM
> >To: intel-gfx at lists.freedesktop.org
> >Cc: Wood, Thomas; daniel at ffwll.ch; Morton, Derek J
> >Subject: [PATCH i-g-t v4] lib/tests/igt_segfault Add unit test to test segfault handling
> >
> >Unit test to check a segfaulting subtest is handled correctly.
> >
> >v2: Added script to check subtest results
> >v3: Removed script. Updated test to use fork to monitor return status.
> >v4: Added igt_segfault to .gitignore
> >
> >Signed-off-by: Derek Morton <derek.j.morton at intel.com>
> >---
> > lib/tests/.gitignore       |   1 +
> > lib/tests/Makefile.sources |   1 +
> > lib/tests/igt_segfault.c   | 139 +++++++++++++++++++++++++++++++++++++++++++++
> > 3 files changed, 141 insertions(+)
> > create mode 100644 lib/tests/igt_segfault.c
> >
> >diff --git a/lib/tests/.gitignore b/lib/tests/.gitignore index a745a23..729568b 100644
> >--- a/lib/tests/.gitignore
> >+++ b/lib/tests/.gitignore
> >@@ -5,6 +5,7 @@ igt_list_only
> > igt_no_exit
> > igt_no_exit_list_only
> > igt_no_subtest
> >+igt_segfault
> > igt_simple_test_subtests
> > igt_simulation
> > igt_timeout
> >diff --git a/lib/tests/Makefile.sources b/lib/tests/Makefile.sources index 10e0617..5fa0b31 100644
> >--- a/lib/tests/Makefile.sources
> >+++ b/lib/tests/Makefile.sources
> >@@ -8,6 +8,7 @@ check_PROGRAMS = \
> > 	igt_simple_test_subtests \
> > 	igt_timeout \
> > 	igt_invalid_subtest_name \
> >+	igt_segfault \
> > 	$(NULL)
> > 
> > check_SCRIPTS = \
> >diff --git a/lib/tests/igt_segfault.c b/lib/tests/igt_segfault.c new file mode 100644 index 0000000..b420b1a
> >--- /dev/null
> >+++ b/lib/tests/igt_segfault.c
> >@@ -0,0 +1,139 @@
> >+/*
> >+ * Copyright © 2015 Intel Corporation
> >+ *
> >+ * Permission is hereby granted, free of charge, to any person 
> >+obtaining a
> >+ * copy of this software and associated documentation files (the 
> >+"Software"),
> >+ * to deal in the Software without restriction, including without 
> >+limitation
> >+ * the rights to use, copy, modify, merge, publish, distribute, 
> >+sublicense,
> >+ * and/or sell copies of the Software, and to permit persons to whom 
> >+the
> >+ * Software is furnished to do so, subject to the following conditions:
> >+ *
> >+ * The above copyright notice and this permission notice (including the 
> >+next
> >+ * paragraph) shall be included in all copies or substantial portions 
> >+of the
> >+ * Software.
> >+ *
> >+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 
> >+EXPRESS OR
> >+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 
> >+MERCHANTABILITY,
> >+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT 
> >+SHALL
> >+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR 
> >+OTHER
> >+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 
> >+ARISING
> >+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
> >+DEALINGS
> >+ * IN THE SOFTWARE.
> >+ *
> >+ * Authors:
> >+ *    Derek Morton <derek.j.morton at intel.com>
> >+ *
> >+ */
> >+
> >+/*
> >+ * Testcase: Test the framework catches a segfault and returns an error.
> >+ *
> >+ * 1. Test a crashing simple test is reported.
> >+ * 2. Test a crashing subtest is reported.
> >+ * 3. Test a crashing subtest following a passing subtest is reported.
> >+ * 4. Test a crashing subtest preceeding a passing subtest is reported.
> >+ */
> >+
> >+#include <stdlib.h>
> >+#include <sys/wait.h>
> >+#include <sys/types.h>
> >+#include <assert.h>
> >+#include <errno.h>
> >+
> >+#include "drmtest.h"
> >+#include "igt_core.h"
> >+
> >+/*
> >+ * We need to hide assert from the cocci igt test refactor spatch.
> >+ *
> >+ * IMPORTANT: Test infrastructure tests are the only valid places where 
> >+using
> >+ * assert is allowed.
> >+ */
> >+#define internal_assert assert
> >+
> >+bool simple;
> >+bool runa;
> >+bool runc;
> >+char test[] = "test";
> >+char *argv_run[] = { test };
> >+
> >+static int do_fork(void)
> >+{
> >+	int pid, status;
> >+	int argc;
> >+	void (*crashme)(void) = NULL;
> >+
> >+	switch (pid = fork()) {
> >+	case -1:
> >+		internal_assert(0);
> >+	case 0:
> >+		if (simple) {
> >+			argc = 1;
> >+			igt_simple_init(argc, argv_run);
> >+			crashme();
> >+
> >+			igt_exit();
> >+		} else {
> >+
> >+			argc = 1;
> >+			igt_subtest_init(argc, argv_run);
> >+
> >+			if(runa)
> >+				igt_subtest("A")
> >+					;
> >+
> >+			igt_subtest("B")
> >+				crashme();
> >+
> >+			if(runc)
> >+				igt_subtest("C")
> >+					;
> >+
> >+			igt_exit();
> >+		}
> >+	default:
> >+		while (waitpid(pid, &status, 0) == -1 &&
> >+		       errno == EINTR)
> >+			;
> >+
> >+		if(WIFSIGNALED(status))
> >+			return WTERMSIG(status) + 128;
> >+
> >+		return WEXITSTATUS(status);
> >+	}
> >+}
> >+
> >+int main(int argc, char **argv)
> >+{
> >+	/* Test Crash in simple test is reported */
> >+	simple = true;
> >+	runa=false;
> >+	runc=false;
> >+	igt_info("Simple test.\n");
> >+	fflush(stdout);
> >+	internal_assert(do_fork() == SIGSEGV + 128);
> >+
> >+	/* Test crash in a single subtest is reported */
> >+	simple = false;
> >+	igt_info("Single subtest.\n");
> >+	fflush(stdout);
> >+	internal_assert(do_fork() == SIGSEGV + 128);
> >+
> >+	/* Test crash in a subtest following a pass is reported */
> >+	simple = false;
> >+	runa=true;
> >+	igt_info("Passing then crashing subtest.\n");
> >+	fflush(stdout);
> >+	internal_assert(do_fork() == SIGSEGV + 128);
> >+
> >+	/* Test crash in a subtest preceeding a pass is reported */
> >+	simple = false;
> >+	runa=false;
> >+	runc=true;
> >+	igt_info("Crashing then passing subtest.\n");
> >+	fflush(stdout);
> >+	internal_assert(do_fork() == SIGSEGV + 128);
> >+
> >+	return 0;
> >+}
> >+
> >--
> >1.9.1
> >
> >

-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch