diff --git a/kernel/process.c b/kernel/process.c
index e7ac6d56..d447fe95 100644
--- a/kernel/process.c
+++ b/kernel/process.c
@@ -3159,10 +3159,6 @@ void schedule(void)
 		return;
 	}
 
-redo:
-	/* Reset for redo */
-	switch_ctx = 0;
-
 	cpu_local_var(runq_irqstate) = 
 		ihk_mc_spinlock_lock(&(get_this_cpu_local_var()->runq_lock));
 	v = get_this_cpu_local_var();
@@ -3307,7 +3303,8 @@ redo:
 
 		/* Have we migrated to another core meanwhile? */
 		if (v != get_this_cpu_local_var()) {
-			goto redo;
+			v = get_this_cpu_local_var();
+			v->flags &= ~CPU_FLAG_NEED_RESCHED;
 		}
 	}
 	else {
diff --git a/test/issues/1027/C1027.sh b/test/issues/1027/C1027.sh
new file mode 100644
index 00000000..845f370f
--- /dev/null
+++ b/test/issues/1027/C1027.sh
@@ -0,0 +1,136 @@
+#!/bin/sh
+BIN=
+SBIN=
+OSTEST=
+LTP=
+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 [ -f ../../../config.h ]; then
+	str=`grep "^#define BINDIR " ../../../config.h | head -1 | sed 's/^#define BINDIR /BINDIR=/'`
+	eval $str
+fi
+if [ "x$BINDIR" = x ];then
+	BINDIR="$BIN"
+fi
+
+if [ -f ../../../Makefile ]; then
+	str=`grep ^SBINDIR ../../../Makefile | head -1 | sed 's/ //g'`
+	eval $str
+fi
+if [ "x$SBINDIR" = x ];then
+	SBINDIR="$SBIN"
+fi
+
+if [ -f $HOME/ostest/bin/test_mck ]; then
+	OSTESTDIR=$HOME/ostest/
+fi
+if [ "x$OSTESTDIR" = x ]; then
+	OSTESTDIR="$OSTEST"
+fi
+
+if [ -f $HOME/ltp/testcases/bin/fork01 ]; then
+	LTPDIR=$HOME/ltp/testcases
+fi
+if [ "x$LTPDIR" = x ]; then
+	LTPDIR="$LTP/testcases"
+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 $BINDIR/mcexec ]; then
+	echo mcexec: not found >&2
+	exit 1
+fi
+
+tid=001
+echo "*** RT_$tid start *******************************"
+sudo $BINDIR/mcexec $OSTESTDIR/bin/test_mck -s sched_yield -n 0
+echo "*** RT_$tid: PASSED"
+echo ""
+
+tid=001
+echo "*** LT_$tid start *******************************"
+sudo $BINDIR/mcexec $LTPDIR/bin/fork01 2>&1 | tee ./LT_${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 $BINDIR/mcexec $LTPDIR/bin/fork02 2>&1 | tee ./LT_${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 $BINDIR/mcexec $LTPDIR/bin/fork03 2>&1 | tee ./LT_${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 $BINDIR/mcexec $LTPDIR/bin/fork04 2>&1 | tee ./LT_${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=005
+echo "*** LT_$tid start *******************************"
+sudo $BINDIR/mcexec $LTPDIR/bin/fork07 2>&1 | tee ./LT_${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=006
+echo "*** LT_$tid start *******************************"
+sudo $BINDIR/mcexec $LTPDIR/bin/fork08 2>&1 | tee ./LT_${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 ""
+
diff --git a/test/issues/1027/Makefile b/test/issues/1027/Makefile
new file mode 100644
index 00000000..0a8e41d7
--- /dev/null
+++ b/test/issues/1027/Makefile
@@ -0,0 +1,10 @@
+CC = gcc
+
+all: $(TARGET)
+
+test: all
+	@sh ./C1027.sh
+
+clean:
+	rm -f $(TARGET) *.o
+
diff --git a/test/issues/1027/README b/test/issues/1027/README
new file mode 100644
index 00000000..861be7ba
--- /dev/null
+++ b/test/issues/1027/README
@@ -0,0 +1,45 @@
+【Issue#1027 動作確認】
+□ テスト内容
+1. Issueで報告された再現プログラムでの確認
+RT_001: ostest-sched_yield.000
+	sched_yield()によるスケジューリングが行われ、
+	  - [child] End process
+	  - [parent] End process
+	の順に出力されることを確認
+
+2. 既存のfork機能に影響がないことをLTPを用いて確認
+LT_001: ltp-fork01
+	fork後に子プロセスのプロセスIDが正しいことを確認 (TPASS 2件)
+
+LT_002: ltp-fork02
+	fork後にwaitを行い、waitが子プロセスのPIDを返却することを確認(TPASS 1件)
+
+LT_003: ltp-fork03
+	子プロセスがfork後に計算を行えること、また子プロセスでのfork返却値が0で
+	あることを確認 (TPASS 1件)
+
+LT_004: ltp-fork04
+	forkで生成した子プロセスが環境変数を変更しても、親プロセス側の
+	環境変数に変化が無いことを確認 (TPASS 3件)
+
+LT_005: ltp-fork07
+	forkした子プロセスに、親プロセスからファイルディスクリプタを
+	引き継いでいることを確認 (TPASS 1件)
+
+LT_006: ltp-fork08
+	forkした複数の子プロセスが、それぞれ親プロセスから引き継いだファイル
+	ディスクリプタを別個に操作できることを確認
+	(ある子プロセスがcloseしても別な子プロセスがI/O可能) (TPASS 4件)
+
+□ 実行手順
+$ make test
+
+実行できない場合は、C1027.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
+OSTEST=       OSTEST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。
diff --git a/test/issues/1027/result.log b/test/issues/1027/result.log
new file mode 100644
index 00000000..1c9fef94
--- /dev/null
+++ b/test/issues/1027/result.log
@@ -0,0 +1,58 @@
+*** RT_001 start *******************************
+TEST_SUITE: sched_yield
+TEST_NUMBER: 0
+ARGS:
+[child] running core 1
+[parent] running core 0
+[parent] child process migrate/bind to core 0
+[parent] parent process bind to core 0
+[parent] send sched_yield.
+[child] before migrate prevcore 1, nowcore 0
+[child] End process.
+[parent] End process.
+RESULT: check end order, [end child] -> [end parent]
+*** RT_001: PASSED
+
+*** LT_001 start *******************************
+fork01      1  TPASS  :  fork() returned 18705
+fork01      2  TPASS  :  child pid and fork() return agree: 18705
+*** LT_001: PASSED (ok:2)
+
+*** LT_002 start *******************************
+fork02      0  TINFO  :  Inside parent
+fork02      0  TINFO  :  exit status of wait 0
+fork02      1  TPASS  :  test 1 PASSED
+*** LT_002: PASSED (ok:1)
+
+*** LT_003 start *******************************
+fork03      0  TINFO  :  process id in parent of child from fork : 18843
+fork03      1  TPASS  :  test 1 PASSED
+*** LT_003: PASSED (ok:1)
+
+*** LT_004 start *******************************
+fork04      1  TPASS  :  Env var TERM unchanged after fork(): xterm-256color
+fork04      2  TPASS  :  Env var NoTSetzWq unchanged after fork(): getenv() does not find variable set
+fork04      3  TPASS  :  Env var TESTPROG unchanged after fork(): FRKTCS04
+*** LT_004: PASSED (ok:3)
+
+*** LT_005 start *******************************
+fork07      0  TINFO  :  Forking 100 children
+fork07      0  TINFO  :  Forked all 100 children, now collecting
+fork07      0  TINFO  :  Collected all 100 children
+fork07      1  TPASS  :  100/100 children read correctly from an inheritted fd
+*** LT_005: PASSED (ok:1)
+
+*** LT_006 start *******************************
+fork08      0  TINFO  :  parent forksval: 1
+fork08      0  TINFO  :  second child got char: b
+fork08      1  TPASS  :  Test passed in childnumber 2
+fork08      0  TINFO  :  parent forksval: 1
+fork08      0  TINFO  :  parent forksval: 2
+fork08      0  TINFO  :  exit status of wait  expected 0 got 0
+fork08      1  TPASS  :  parent test PASSED
+fork08      0  TINFO  :  exit status of wait  expected 0 got 0
+fork08      2  TPASS  :  parent test PASSED
+fork08      0  TINFO  :  exit status of wait  expected 0 got 0
+fork08      3  TPASS  :  parent test PASSED
+fork08      0  TINFO  :  Number of processes forked is 2
+*** LT_006: PASSED (ok:4)