61 lines
1.2 KiB
C
61 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* Copyright (c) International Business Machines Corp., 2003.
|
|
* Copyright (c) 2012 Wanlong Gao <gaowanlong@cn.fujitsu.com>
|
|
*/
|
|
|
|
/*\
|
|
* [Description]
|
|
*
|
|
* Test for a libc bug where exiting child function by returning from
|
|
* it caused SIGSEGV.
|
|
*/
|
|
|
|
#include <sched.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include "tst_test.h"
|
|
#include "lapi/syscalls.h"
|
|
#include "clone_platform.h"
|
|
|
|
static void *child_stack;
|
|
|
|
static int do_child(void *arg LTP_ATTRIBUTE_UNUSED)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static void verify_clone(void)
|
|
{
|
|
int status;
|
|
pid_t pid = 0;
|
|
|
|
TST_EXP_PID_SILENT(ltp_clone(SIGCHLD, do_child, NULL, CHILD_STACK_SIZE,
|
|
child_stack));
|
|
|
|
if (!TST_PASS)
|
|
return;
|
|
|
|
SAFE_WAITPID(pid, &status, 0);
|
|
|
|
if (WIFEXITED(status) && WEXITSTATUS(status) == 0) {
|
|
tst_res(TPASS, "Using return in child will not cause abnormal exit");
|
|
return;
|
|
}
|
|
|
|
if (WIFSIGNALED(status) && WTERMSIG(status) == SIGSEGV) {
|
|
tst_res(TFAIL, "Use of return in child caused SIGSEGV");
|
|
return;
|
|
}
|
|
|
|
tst_res(TFAIL, "Using return 0 in child the child %s", tst_strstatus(status));
|
|
}
|
|
|
|
static struct tst_test test = {
|
|
.test_all = verify_clone,
|
|
.bufs = (struct tst_buffers []) {
|
|
{&child_stack, .size = CHILD_STACK_SIZE},
|
|
{},
|
|
},
|
|
};
|