execve: Clear sigaltstack and fp_regs

Fujitsu: POSTK_DEBUG_TEMP_FIX_19
Refs: #976
Change-Id: I16895eab13eecbb47b7e6da961fae82ee5e570ee

arch/arm64/kernel/cpu.c

@@ -1437,8 +1437,7 @@ void copy_fp_regs(struct thread *from, struct thread *to)
 	}
 }
 
-void
+void clear_fp_regs(void)
-clear_fp_regs(struct thread *thread)
 {
 	if (likely(elf_hwcap & (HWCAP_FP | HWCAP_ASIMD))) {
 #ifdef CONFIG_ARM64_SVE
@@ -1475,7 +1474,7 @@ restore_fp_regs(struct thread *thread)
 	if (likely(elf_hwcap & (HWCAP_FP | HWCAP_ASIMD))) {
 		if (!thread->fp_regs) {
 			// only clear fpregs.
-			clear_fp_regs(thread);
+			clear_fp_regs();
 			return;
 		}
 		thread_fpsimd_load(thread);

arch/arm64/kernel/fpsimd.c

@@ -10,6 +10,7 @@
 #include <cpufeature.h>
 #include <kmalloc.h>
 #include <debug.h>
+#include <process.h>
 
 //#define DEBUG_PRINT_FPSIMD
 
@@ -71,9 +72,6 @@ static int get_nr_threads(struct process *proc)
 	return nr_threads;
 }
 
-extern void save_fp_regs(struct thread *thread);
-extern void clear_fp_regs(struct thread *thread);
-extern void restore_fp_regs(struct thread *thread);
 /* @ref.impl arch/arm64/kernel/fpsimd.c::sve_set_vector_length */
 int sve_set_vector_length(struct thread *thread,
 			unsigned long vl, unsigned long flags)
@@ -127,7 +125,7 @@ int sve_set_vector_length(struct thread *thread,
 			/* for self at prctl syscall */
 			if (thread == cpu_local_var(current)) {
 				save_fp_regs(thread);
-				clear_fp_regs(thread);
+				clear_fp_regs();
 				thread_sve_to_fpsimd(thread, &fp_regs);
 				sve_free(thread);
 

arch/x86_64/kernel/cpu.c

@@ -1760,14 +1760,6 @@ void copy_fp_regs(struct thread *from, struct thread *to)
 	}
 }
 
-#ifdef POSTK_DEBUG_TEMP_FIX_19
-void
-clear_fp_regs(struct thread *thread)
-{
-	return;
-}
-#endif /* POSTK_DEBUG_TEMP_FIX_19 */
-
 /*@
   @ requires \valid(thread);
   @ assigns thread->fp_regs;
@@ -1775,8 +1767,11 @@ clear_fp_regs(struct thread *thread)
 void
 restore_fp_regs(struct thread *thread)
 {
-	if (!thread->fp_regs)
+	if (!thread->fp_regs) {
+		// only clear fpregs.
+		clear_fp_regs();
 		return;
+	}
 
 	if (xsave_available) {
 		unsigned int low, high;
@@ -1795,6 +1790,13 @@ restore_fp_regs(struct thread *thread)
 	//release_fp_regs(thread);
 }
 
+void clear_fp_regs(void)
+{
+	struct cpu_local_var *v = get_this_cpu_local_var();
+
+	restore_fp_regs(&v->idle);
+}
+
 ihk_mc_user_context_t *lookup_user_context(struct thread *thread)
 {
 	ihk_mc_user_context_t *uctx = thread->uctx;

kernel/include/process.h

@@ -829,4 +829,10 @@ void proc_init(void);
 void set_timer(void);
 struct sig_pending *hassigpending(struct thread *thread);
 
+void release_fp_regs(struct thread *proc);
+void save_fp_regs(struct thread *proc);
+void copy_fp_regs(struct thread *from, struct thread *to);
+void restore_fp_regs(struct thread *proc);
+void clear_fp_regs(void);
+
 #endif

kernel/process.c

@@ -77,10 +77,6 @@ static int vm_range_insert(struct process_vm *vm,
 static struct vm_range *vm_range_find(struct process_vm *vm,
 		unsigned long addr);
 static int copy_user_ranges(struct process_vm *vm, struct process_vm *orgvm);
-extern void release_fp_regs(struct thread *proc);
-extern void save_fp_regs(struct thread *proc);
-extern void copy_fp_regs(struct thread *from, struct thread *to);
-extern void restore_fp_regs(struct thread *proc);
 extern void __runq_add_proc(struct thread *proc, int cpu_id);
 extern void terminate_host(int pid);
 extern void lapic_timer_enable(unsigned int clocks);
@@ -2947,6 +2943,9 @@ void sched_init(void)
 	INIT_LIST_HEAD(&cpu_local_var(migq));
 	ihk_mc_spinlock_init(&cpu_local_var(migq_lock));
 
+	// to save default fpregs
+	save_fp_regs(idle_thread);
+
 #ifdef TIMER_CPU_ID
 	if (ihk_mc_get_processor_id() == TIMER_CPU_ID) {
 		init_timers();

kernel/syscall.c

@@ -2129,10 +2129,6 @@ static void munmap_all(void)
 	return;
 } /* munmap_all() */
 
-#ifdef POSTK_DEBUG_TEMP_FIX_19
-extern void clear_fp_regs(struct thread *thread);
-#endif /* POSTK_DEBUG_TEMP_FIX_19 */
-
 SYSCALL_DECLARE(execve)
 {
 	int error;
@@ -2273,10 +2269,13 @@ SYSCALL_DECLARE(execve)
 			thread->sigcommon->action[i].sa.sa_handler = SIG_DFL;
 	}
 
-#ifdef POSTK_DEBUG_TEMP_FIX_19
+	/* Reset floating-point environment to default. */
-	/* The floating-point environment is reset to the default. */
+	clear_fp_regs();
-	clear_fp_regs(thread);
+
-#endif /* POSTK_DEBUG_TEMP_FIX_19 */
+	/* Reset sigaltstack to default */
+	thread->sigstack.ss_sp = NULL;
+	thread->sigstack.ss_flags = SS_DISABLE;
+	thread->sigstack.ss_size = 0;
 
 	error = ptrace_report_exec(thread);
 	if(error) {

test/issues/976/C976.sh

@@ -0,0 +1,100 @@
+#!/bin/sh
+if [ -f $HOME/mck_test_config ]; then
+	. $HOME/mck_test_config
+else
+	BIN=
+	SBIN=
+	OSTEST=
+	LTP=
+fi
+BOOTPARAM="-c 1-7,9-15,17-23,25-31 -m 10G@0,10G@1 -r 1-7:0+9-15:8+17-23:16+25-31:24"
+
+if [ "x$BINDIR" = x ];then
+	BINDIR="$BIN"
+fi
+
+if [ "x$SBINDIR" = x ];then
+	SBINDIR="$SBIN"
+fi
+
+if [ "x$OSTESTDIR" = x ]; then
+	OSTESTDIR="$OSTEST"
+fi
+
+if [ "x$LTPDIR" = x ]; then
+	LTPDIR="$LTP"
+fi
+
+if [ ! -x $SBINDIR/mcstop+release.sh ]; then
+	echo mcstop+release: not found >&2
+	exit 1
+fi
+echo -n "mcstop+release.sh ... "
+sudo $SBINDIR/mcstop+release.sh
+echo "done"
+
+if [ ! -x $SBINDIR/mcreboot.sh ]; then
+	echo mcreboot: not found >&2
+	exit 1
+fi
+echo -n "mcreboot.sh $BOOTPARAM ... "
+sudo $SBINDIR/mcreboot.sh $BOOTPARAM
+echo "done"
+
+if [ ! -x $BINDIR/mcexec ]; then
+	echo mcexec: not found >&2
+	exit 1
+fi
+
+$BINDIR/mcexec ./CT_001
+$BINDIR/mcexec ./CT_002
+$BINDIR/mcexec ./CT_003
+
+tid=001
+echo "*** LT_$tid start *******************************"
+sudo PATH=$LTPDIR/bin:${PATH} $BINDIR/mcexec $LTPDIR/bin/execve01 2>&1 | tee ./LT_${tid}.txt
+ok=`grep TPASS LT_${tid}.txt | wc -l`
+ng=`grep TFAIL LT_${tid}.txt | wc -l`
+if [ $ng = 0 ]; then
+	echo "*** LT_$tid: PASSED (ok:$ok)"
+else
+	echo "*** LT_$tid: FAILED (ok:$ok, ng:$ng)"
+fi
+echo ""
+
+tid=002
+echo "*** LT_$tid start *******************************"
+sudo PATH=$LTPDIR/bin:${PATH} $BINDIR/mcexec $LTPDIR/bin/execve02 2>&1 | tee ./LT_${tid}.txt
+ok=`grep TPASS LT_${tid}.txt | wc -l`
+ng=`grep TFAIL LT_${tid}.txt | wc -l`
+if [ $ng = 0 ]; then
+	echo "*** LT_$tid: PASSED (ok:$ok)"
+else
+	echo "*** LT_$tid: FAILED (ok:$ok, ng:$ng)"
+fi
+echo ""
+
+tid=003
+echo "*** LT_$tid start *******************************"
+sudo PATH=$LTPDIR/bin:${PATH} $BINDIR/mcexec $LTPDIR/bin/execve03 2>&1 | tee ./LT_${tid}.txt
+ok=`grep TPASS LT_${tid}.txt | wc -l`
+ng=`grep TFAIL LT_${tid}.txt | wc -l`
+if [ $ng = 0 ]; then
+	echo "*** LT_$tid: PASSED (ok:$ok)"
+else
+	echo "*** LT_$tid: FAILED (ok:$ok, ng:$ng)"
+fi
+echo ""
+
+tid=004
+echo "*** LT_$tid start *******************************"
+sudo PATH=$LTPDIR/bin:${PATH} $BINDIR/mcexec $LTPDIR/bin/execve05 20 $LTPDIR/bin/execve05 $LTPDIR/bin/execve05 4 2>&1 | tee ./LT_${tid}.txt
+ok=`grep TPASS LT_${tid}.txt | wc -l`
+ng=`grep TFAIL LT_${tid}.txt | wc -l`
+if [ $ng = 0 ]; then
+	echo "*** LT_$tid: PASSED (ok:$ok)"
+else
+	echo "*** LT_$tid: FAILED (ok:$ok, ng:$ng)"
+fi
+echo ""
+

test/issues/976/CT_001.c

@@ -0,0 +1,64 @@
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <error.h>
+#include <sys/mman.h>
+#include "./test_chk.h"
+
+#include <signal.h>
+
+#define TEST_NAME "CT_001"
+
+int main(int argc, char *argv[])
+{
+	int rc = 0;
+	stack_t cur_stack;
+	stack_t set_stack;
+	void *stack_area = NULL;
+	char *exargv[3] = {argv[0], "stop", NULL};
+	char *exenvp[1] = {NULL};
+
+	printf("*** %s start ********************************\n", TEST_NAME);
+	rc = sigaltstack(NULL, &cur_stack);
+	OKNG(rc != 0, "sigaltstack() to get current  returned %d"
+		"\n      (expect return is 0)", rc);
+
+	OKNG(cur_stack.ss_sp != NULL, "default ss_sp is %p"
+		"\n      (expect ss_sp is NULL)", cur_stack.ss_sp);
+
+	stack_area = mmap(0, MINSIGSTKSZ, PROT_READ | PROT_WRITE,
+		MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+
+	OKNG(stack_area == MAP_FAILED, "alloc altstack area %p"
+		"\n      (expect area is valid vaddr)", stack_area);
+
+	set_stack.ss_sp = stack_area;
+	set_stack.ss_flags = 0;
+	set_stack.ss_size = MINSIGSTKSZ;
+
+	rc = sigaltstack(&set_stack, NULL);
+	OKNG(rc != 0, "sigaltstack() to set new stack  returned %d"
+		"\n      (expect return is 0)", rc);
+
+	rc = sigaltstack(NULL, &cur_stack);
+	OKNG(rc != 0, "sigaltstack() to get current  returned %d"
+		"\n      (expect return is 0)", rc);
+
+	OKNG(cur_stack.ss_sp != stack_area, "new ss_sp is %p"
+		"\n      (expect ss_sp is %p)", cur_stack.ss_sp, stack_area);
+
+	if (argc < 2) {
+		printf("** Re-run by execve\n");
+		execve(exargv[0], exargv, exenvp);
+	}
+
+	printf("*** %s PASSED\n\n", TEST_NAME);
+
+	return 0;
+
+fn_fail:
+	printf("*** %s FAILED\n\n", TEST_NAME);
+
+	return -1;
+}

test/issues/976/CT_002.c

@@ -0,0 +1,52 @@
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include "./test_chk.h"
+
+#include <fenv.h>
+
+#define TEST_NAME "CT_002"
+
+int main(int argc, char *argv[])
+{
+	fenv_t fenv;
+	int rc = 0;
+	int round = 0;
+	double dummy = 0;
+	char *exargv[3] = {argv[0], "stop", NULL};
+	char *exenvp[1] = {NULL};
+
+	printf("*** %s start ********************************\n", TEST_NAME);
+	rc = fetestexcept(FE_ALL_EXCEPT);
+	OKNG(rc != 0, "fetestexcept(FE_ALL_EXCEPT) returned %d"
+		"\n      (expect return is 0)", rc);
+
+	dummy = (double)0 / 0;
+	rc = fetestexcept(FE_ALL_EXCEPT);
+	OKNG(rc != FE_INVALID, "fetestexcept(FE_ALL_EXCEPT) returned %d"
+		"\n      (expect return is FE_INVALID(%d))", rc, FE_INVALID);
+
+	rc = feraiseexcept(FE_ALL_EXCEPT);
+	OKNG(rc != 0, "feraiseexcept(FE_ALL_EXCEPT) returned %d"
+		"\n      (expect return is 0)", rc);
+
+	rc = fetestexcept(FE_ALL_EXCEPT);
+	OKNG(rc != FE_ALL_EXCEPT, "fetestexcept(FE_ALL_EXCEPT) returned %d"
+		"\n      (expect return is FE_ALL_EXCEPT(%d))",
+		rc, FE_ALL_EXCEPT);
+
+	if (argc < 2) {
+		printf("** Re-run by execve\n");
+		execve(exargv[0], exargv, exenvp);
+	}
+
+	printf("*** %s PASSED\n\n", TEST_NAME);
+
+	return 0;
+
+fn_fail:
+	printf("*** %s FAILED\n\n", TEST_NAME);
+
+	return -1;
+}

test/issues/976/CT_003.c

@@ -0,0 +1,48 @@
+#define _GNU_SOURCE
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include "./test_chk.h"
+
+#include <fenv.h>
+
+#define TEST_NAME "CT_003"
+
+int main(int argc, char *argv[])
+{
+	fenv_t fenv;
+	int rc = 0;
+	int round = 0;
+	char *exargv[3] = {argv[0], "stop", NULL};
+	char *exenvp[1] = {NULL};
+
+	printf("*** %s start ********************************\n", TEST_NAME);
+	round = fegetround();
+	OKNG(round != FE_TONEAREST, "fegetround  returned %d"
+		"\n      (expect return is FE_TONEAREST(%d))",
+		round, FE_TONEAREST);
+
+	rc = fesetround(FE_TOWARDZERO);
+	OKNG(rc != 0, "fesetround(FE_TOWARDZERO) returned %d"
+		"\n      (expect return is 0)", rc);
+
+	round = fegetround();
+	OKNG(round != FE_TOWARDZERO, "fegetround  returned %d"
+		"\n      (expect return is FE_TOWARDZERO(%d))",
+		round, FE_TOWARDZERO);
+
+
+	if (argc < 2) {
+		printf("** Re-run by execve\n");
+		execve(exargv[0], exargv, exenvp);
+	}
+
+	printf("*** %s PASSED\n\n", TEST_NAME);
+
+	return 0;
+
+fn_fail:
+	printf("*** %s FAILED\n\n", TEST_NAME);
+
+	return -1;
+}

test/issues/976/Makefile

@@ -0,0 +1,23 @@
+CC = gcc
+TARGET=CT_001 CT_002 CT_003
+
+CPPFLAGS =
+LDFLAGS =
+
+all: $(TARGET)
+
+CT_001: CT_001.c
+	$(CC) -o $@ $^ $(LDFLAGS)
+
+CT_002: CT_002.c
+	$(CC) -o $@ $^ $(LDFLAGS) -lm
+
+CT_003: CT_003.c
+	$(CC) -o $@ $^ $(LDFLAGS) -lm
+
+test: all
+	@sh ./C976.sh
+
+clean:
+	rm -f $(TARGET) *.o
+

test/issues/976/README

@@ -0,0 +1,54 @@
+【Issue#976 動作確認】
+□ テスト内容
+1. Issueで報告された再現プログラムでの確認
+CT_001: sigaltstackがexecve時に初期化されていることの確認
+	1. 自プロセスの代替シグナルスタック(ss_sp)がNULLであることを確認
+	2. sigaltstack()で新たに代替シグナルスタックを設定
+	3. execve で自身を再実行し、自プロセスの代替シグナルスタックがNULLであることを確認
+
+CT_002: fenvの浮動小数点例外発生フラグがexecve時に初期化されていることを確認
+	1. fetestexcept(FE_ALL_EXCEPT)で自プロセスの浮動小数点例外の発生フラグが
+	   すべて0であることを確認
+	2. 0除算を実行し、浮動小数点例外(FE_INVALID)を発生させる
+	3. fetestexcept(FE_ALL_EXCEPT)で自プロセスのFE_INVALIDフラグが1に
+	   なっていることを確認
+	4. feraiseexcept(FE_ALL_EXCEPT)で自プロセスの浮動小数点例外の発生フラグを
+	   すべて1にする
+	5. execve で自身を再実行し、浮動小数点例外の発生フラグがすべて0であることを確認
+
+CT_003: fenvの浮動小数丸めの設定がexecve時に初期化されていることを確認
+	1. fegetround() で自プロセスの丸めモードを取得し、FE_TONEARESTであることを確認
+	2. fesetround(FE_TOWARDZERO) で自プロセスの丸めモードをFE_TOWARDZEROに変更する
+	3. execve で自身を再実行し、自プロセスの丸めモードがFE_TONEARESTであることを確認
+
+2. 既存のexecve機能に影響がないことをLTPを用いて確認
+LT_001: ltp-execve01
+	子プロセスがexecveを実行し、正常に終了することを確認 (TPASS 1件)
+
+LT_002: ltp-execve02
+	rootのみに実行権限が付与された実行ファイルを、
+	一般ユーザがexecveした場合に失敗することを確認 (TPASS 1件)
+
+LT_003: ltp-execve03
+	下記の不正な引数でexecveを実行した場合、返り値と設定されるerrnoが
+	正しいことを確認 (TPASS 6件)
+
+LT_004: ltp-execve05
+	execveの標準的な動作を確認 (TPASS 8件)
+
+□ 実行手順
+McKernelのインストール先や、OSTEST, LTPの配置場所は、
+$HOME/mck_test_config を参照している
+mck_test_config は、McKernelをビルドした際に生成される
+mck_test_config.sample ファイルを$HOMEにコピーし、適宜編集する
+
+$ make test
+
+実行できない場合は、C976.shの以下の行を適切に書き換えた後に実行。
+BIN=          mcexec が存在するパス
+SBIN=         mcreboot.sh が存在するパス
+LTP=          LTPが存在するパス
+
+□ 実行結果
+result.log 参照。
+すべての項目をPASSしていることを確認。

test/issues/976/result.log

@@ -0,0 +1,103 @@
+*** CT_001 start ********************************
+ [OK] sigaltstack() to get current  returned 0
+      (expect return is 0)
+ [OK] default ss_sp is (nil)
+      (expect ss_sp is NULL)
+ [OK] alloc altstack area 0x2aaaab014000
+      (expect area is valid vaddr)
+ [OK] sigaltstack() to set new stack  returned 0
+      (expect return is 0)
+ [OK] sigaltstack() to get current  returned 0
+      (expect return is 0)
+ [OK] new ss_sp is 0x2aaaab014000
+      (expect ss_sp is 0x2aaaab014000)
+** Re-run by execve
+*** CT_001 start ********************************
+ [OK] sigaltstack() to get current  returned 0
+      (expect return is 0)
+ [OK] default ss_sp is (nil)
+      (expect ss_sp is NULL)
+ [OK] alloc altstack area 0x2aaaab014000
+      (expect area is valid vaddr)
+ [OK] sigaltstack() to set new stack  returned 0
+      (expect return is 0)
+ [OK] sigaltstack() to get current  returned 0
+      (expect return is 0)
+ [OK] new ss_sp is 0x2aaaab014000
+      (expect ss_sp is 0x2aaaab014000)
+*** CT_001 PASSED
+
+*** CT_002 start ********************************
+ [OK] fetestexcept(FE_ALL_EXCEPT) returned 0
+      (expect return is 0)
+ [OK] fetestexcept(FE_ALL_EXCEPT) returned 1
+      (expect return is FE_INVALID(1))
+ [OK] feraiseexcept(FE_ALL_EXCEPT) returned 0
+      (expect return is 0)
+ [OK] fetestexcept(FE_ALL_EXCEPT) returned 61
+      (expect return is FE_ALL_EXCEPT(61))
+** Re-run by execve
+*** CT_002 start ********************************
+ [OK] fetestexcept(FE_ALL_EXCEPT) returned 0
+      (expect return is 0)
+ [OK] fetestexcept(FE_ALL_EXCEPT) returned 1
+      (expect return is FE_INVALID(1))
+ [OK] feraiseexcept(FE_ALL_EXCEPT) returned 0
+      (expect return is 0)
+ [OK] fetestexcept(FE_ALL_EXCEPT) returned 61
+      (expect return is FE_ALL_EXCEPT(61))
+*** CT_002 PASSED
+
+*** CT_003 start ********************************
+ [OK] fegetround  returned 0
+      (expect return is FE_TONEAREST(0))
+ [OK] fesetround(FE_TOWARDZERO) returned 0
+      (expect return is 0)
+ [OK] fegetround  returned 3072
+      (expect return is FE_TOWARDZERO(3072))
+** Re-run by execve
+*** CT_003 start ********************************
+ [OK] fegetround  returned 0
+      (expect return is FE_TONEAREST(0))
+ [OK] fesetround(FE_TOWARDZERO) returned 0
+      (expect return is 0)
+ [OK] fegetround  returned 3072
+      (expect return is FE_TOWARDZERO(3072))
+*** CT_003 PASSED
+
+*** LT_001 start *******************************
+execl01_child    1  TPASS  :  execve01_child executed
+execve01    0  TINFO  :  Child process returned TPASS
+*** LT_001: PASSED (ok:2)
+
+*** LT_002 start *******************************
+Error: Failed to open execve_child
+execve(): error loading ELF for file execve_child
+execve02    1  TPASS  :  execve() failed expectedly: TEST_ERRNO=EACCES(13): Permission denied
+execve02    0  TINFO  :  Child process returned TPASS
+*** LT_002: PASSED (ok:2)
+
+*** LT_003 start *******************************
+lookup_exec_path: lookup_exec_path(): error stat
+Error: /tmp/exeiG2gZP/fake.11925 is not an executable?, errno: 13
+execve(): error loading ELF for file /tmp/exeiG2gZP/fake.11925
+Error: file /tmp/exeiG2gZP/execve03.11925 is zero length
+execve(): error loading ELF for file /tmp/exeiG2gZP/execve03.11925
+execve03    1  TPASS  :  execve failed as expected: TEST_ERRNO=ENAMETOOLONG(36): File name too long
+execve03    2  TPASS  :  execve failed as expected: TEST_ERRNO=ENOENT(2): No such file or directory
+execve03    3  TPASS  :  execve failed as expected: TEST_ERRNO=ENOTDIR(20): Not a directory
+execve03    4  TPASS  :  execve failed as expected: TEST_ERRNO=EFAULT(14): Bad address
+execve03    5  TPASS  :  execve failed as expected: TEST_ERRNO=EACCES(13): Permission denied
+execve03    6  TPASS  :  execve failed as expected: TEST_ERRNO=ENOEXEC(8): Exec format error
+*** LT_003: PASSED (ok:6)
+
+*** LT_004 start *******************************
+execve05    1  TPASS  :  Test DONE, pid 11995, -- /home/satoken/ltp/testcases/bin/execve05 0 /home/satoken/ltp/testcases/bin/execve05 /home/satoken/ltp/testcases/bin/execve05
+execve05    1  TPASS  :  Test DONE, pid 12025, -- /home/satoken/ltp/testcases/bin/execve05 0 /home/satoken/ltp/testcases/bin/execve05 /home/satoken/ltp/testcases/bin/execve05
+execve05    1  TPASS  :  Test DONE, pid 12055, -- /home/satoken/ltp/testcases/bin/execve05 0 /home/satoken/ltp/testcases/bin/execve05 /home/satoken/ltp/testcases/bin/execve05
+execve05    1  TPASS  :  Test DONE, pid 12085, -- /home/satoken/ltp/testcases/bin/execve05 0 /home/satoken/ltp/testcases/bin/execve05 /home/satoken/ltp/testcases/bin/execve05
+execve05    1  TPASS  :  Test DONE, pid 12115, -- /home/satoken/ltp/testcases/bin/execve05 0 /home/satoken/ltp/testcases/bin/execve05 /home/satoken/ltp/testcases/bin/execve05
+execve05    1  TPASS  :  Test DONE, pid 12145, -- /home/satoken/ltp/testcases/bin/execve05 0 /home/satoken/ltp/testcases/bin/execve05 /home/satoken/ltp/testcases/bin/execve05
+execve05    1  TPASS  :  Test DONE, pid 12175, -- /home/satoken/ltp/testcases/bin/execve05 0 /home/satoken/ltp/testcases/bin/execve05 /home/satoken/ltp/testcases/bin/execve05
+execve05    1  TPASS  :  Test DONE, pid 12205, -- /home/satoken/ltp/testcases/bin/execve05 0 /home/satoken/ltp/testcases/bin/execve05 /home/satoken/ltp/testcases/bin/execve05
+*** LT_004: PASSED (ok:8)

test/issues/976/test_chk.h

@@ -0,0 +1,23 @@
+#ifndef HEADER_TEST_CHK_H
+#define HEADER_TEST_CHK_H
+
+#define CHKANDJUMP(cond, ...) do {\
+		if (cond) {\
+			fprintf(stderr, " [NG] ");\
+			fprintf(stderr, __VA_ARGS__);\
+			fprintf(stderr, " failed\n");\
+			goto fn_fail;\
+		} \
+	} while (0)
+
+#define OKNG(cond, ...) do {\
+		if (cond) {\
+			CHKANDJUMP(cond, __VA_ARGS__);\
+		} else {\
+			fprintf(stdout, " [OK] ");\
+			fprintf(stdout, __VA_ARGS__);\
+			fprintf(stdout, "\n");\
+		} \
+	} while (0)
+
+#endif