Fix to VMAP virtual address leak
Fujitsu: POSTK_DEBUG_TEMP_FIX_51 Refs: #1024 Change-Id: I1692ee4f004cb4d1f725baf47a8ed31fce1bf42a
This commit is contained in:
Tomoki Shirasawa
committed by
Masamichi Takagi
Masamichi Takagi
parent
3d365b0d7a
commit
67ebcca74d
74
test/issues/1024/C1024.sh
Executable file
74
test/issues/1024/C1024.sh
Executable file
@ -0,0 +1,74 @@
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#!/bin/sh
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BIN=
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SBIN=
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LTP=
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BOOTPARAM="-c 1-7,17-23,9-15,25-31 -m 10G@0,10G@1"
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if [ -f ../../../config.h ]; then
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str=`grep "^#define BINDIR " ../../../config.h | head -1 | sed 's/^#define BINDIR /BINDIR=/'`
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eval $str
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fi
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if [ "x$BINDIR" = x ];then
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BINDIR="$BIN"
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fi
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if [ -f ../../../Makefile ]; then
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str=`grep ^SBINDIR ../../../Makefile | head -1 | sed 's/ //g'`
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eval $str
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fi
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if [ "x$SBINDIR" = x ];then
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SBINDIR="$SBIN"
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fi
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if [ -f $HOME/ltp/testcases/bin/fork01 ]; then
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LTPDIR=$HOME/ltp/testcases
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fi
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if [ "x$LTPDIR" = x ]; then
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LTPDIR="$LTP"
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fi
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if [ ! -x $SBINDIR/mcreboot.sh ]; then
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echo no mcreboot found >&2
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exit 1
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fi
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if lsmod | grep mcctrl > /dev/null 2>&1; then
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sudo $SBINDIR/mcstop+release.sh
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if lsmod | grep mcctrl > /dev/null 2>&1; then
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echo shutdown failed >&2
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exit 1
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fi
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fi
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sudo $SBINDIR/mcreboot.sh $BOOTPARAM
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if ! lsmod | grep mcctrl > /dev/null 2>&1; then
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echo reboot failed >&2
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exit 1
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fi
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if [ ! -x $BINDIR/mcexec ]; then
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echo no mcexec found >&2
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exit 1
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fi
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################################################################################
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rm -f mcexec
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ln -s $BINDIR/mcexec
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./C1024T01
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./mcexec ./C1024T02
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if [ x$LTPDIR = x ]; then
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echo no LTP found >&2
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exit 1
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fi
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for i in process_vm_readv02:03 process_vm_readv03:04 process_vm_writev02:05; do
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tp=`echo $i|sed 's/:.*//'`
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id=`echo $i|sed 's/.*://'`
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sudo $BINDIR/mcexec $LTPDIR/bin/$tp 2>&1 | tee $tp.txt
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ok=`grep TPASS $tp.txt | wc -l`
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ng=`grep TFAIL $tp.txt | wc -l`
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if [ $ng = 0 ]; then
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echo "*** C1024T$id: $tp OK ($ok)"
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else
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echo "*** C1024T$id: $tp NG (ok=$ok ng=%ng)"
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fi
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done
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147
test/issues/1024/C1024.txt
Normal file
147
test/issues/1024/C1024.txt
Normal file
@ -0,0 +1,147 @@
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Script started on Wed Jul 11 19:17:51 2018
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bash-4.2$ make test
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gcc -o C1024T01 C1024T01.c -Wall -g
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gcc -o C1024T02 C1024T02.c -Wall -g
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sh ./C1024.sh
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*** C1024T01 START
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19:17:54 c=0
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19:22:54 c=9817
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19:27:54 c=18527
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19:32:55 c=27856
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19:37:55 c=37483
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19:42:55 c=45813
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19:47:55 c=55300
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19:52:55 c=64887
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19:57:55 c=73167
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20:02:55 c=82642
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20:07:55 c=92207
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20:12:55 c=100535
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20:17:55 c=109965
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20:22:56 c=119554
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20:27:56 c=127708
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20:32:56 c=137094
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20:37:56 c=146592
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20:42:56 c=154906
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20:47:56 c=164316
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20:52:56 c=173823
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20:57:56 c=181913
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21:02:56 c=191485
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21:07:56 c=201029
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21:12:57 c=209331
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21:17:57 c=218691
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21:22:57 c=228263
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21:27:57 c=236463
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21:32:57 c=245879
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21:37:57 c=255435
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21:42:57 c=263831
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21:47:57 c=273045
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21:52:57 c=282637
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21:57:57 c=290994
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22:02:58 c=300088
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22:07:58 c=309593
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22:12:58 c=318283
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22:17:58 c=327215
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22:22:58 c=336790
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22:27:58 c=345148
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22:32:58 c=354190
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22:37:58 c=363723
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22:42:58 c=372165
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22:47:58 c=381241
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22:52:59 c=390780
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22:57:59 c=399701
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23:02:59 c=408179
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23:07:59 c=417728
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23:12:59 c=426767
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23:17:59 c=435111
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23:22:59 c=444696
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23:27:59 c=454153
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23:32:59 c=462305
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23:37:59 c=471544
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23:43:00 c=481128
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23:48:00 c=489413
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23:53:00 c=498511
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23:58:00 c=508002
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00:03:00 c=516321
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00:08:00 c=525240
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00:13:00 c=534764
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00:18:00 c=543425
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00:23:00 c=552119
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00:28:00 c=561668
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00:33:01 c=570540
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00:38:01 c=578954
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00:43:01 c=588458
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00:48:01 c=597499
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00:53:01 c=605647
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00:58:01 c=615083
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01:03:01 c=624466
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01:08:01 c=632584
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01:13:01 c=641645
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01:18:02 c=651150
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01:23:02 c=659685
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01:28:02 c=668129
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01:33:02 c=677555
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01:38:02 c=686246
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01:43:02 c=694575
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01:48:02 c=704131
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01:53:02 c=713330
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01:58:02 c=721354
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02:03:02 c=730718
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02:08:03 c=740192
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02:13:03 c=748106
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02:18:03 c=757081
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02:23:03 c=766548
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02:28:03 c=775053
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02:33:03 c=783508
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02:38:03 c=793041
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02:43:03 c=802198
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02:48:03 c=810191
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02:53:03 c=819405
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02:58:04 c=828856
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03:03:04 c=836987
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03:08:04 c=845733
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03:13:04 c=855234
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03:18:04 c=863744
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03:23:04 c=872016
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03:28:04 c=881451
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03:33:04 c=890508
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03:38:04 c=898634
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03:43:04 c=907499
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03:48:05 c=916825
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03:53:05 c=924778
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03:58:05 c=933039
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04:03:05 c=942260
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04:08:05 c=950914
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04:13:05 c=958693
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04:18:05 c=967690
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04:23:05 c=976997
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04:28:05 c=984635
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04:33:05 c=993041
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04:38:06 c=1002233
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04:43:06 c=1010732
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04:48:06 c=1018751
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04:53:06 c=1027635
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04:58:06 c=1036889
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05:03:06 c=1044866
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05:05:39 c=1048600
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*** C1024T01 OK
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*** C1024T02 START
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05:05:42 c=0
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05:06:21 c=1048600
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*** C1024T02 OK
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process_vm_readv02 0 TINFO : child 0: memory allocated and initialized.
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process_vm_readv02 0 TINFO : child 1: reading string from same memory location.
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process_vm_readv02 1 TPASS : expected string received.
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*** C1024T03: process_vm_readv02 OK (1)
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process_vm_readv03 0 TINFO : child 0: 10 iovecs allocated and initialized.
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process_vm_readv03 0 TINFO : child 1: 10 remote iovecs received.
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process_vm_readv03 0 TINFO : child 1: 4 local iovecs initialized.
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process_vm_readv03 1 TPASS : child 1: all bytes are correctly received.
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*** C1024T04: process_vm_readv03 OK (1)
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process_vm_writev02 0 TINFO : child 0: memory allocated.
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process_vm_writev02 0 TINFO : child 2: write to the same memory location.
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process_vm_writev02 1 TPASS : child 0: all bytes are expected.
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*** C1024T05: process_vm_writev02 OK (1)
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bash-4.2$ exit
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exit
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Script done on Thu Jul 12 05:43:43 2018
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171
test/issues/1024/C1024T01.c
Normal file
171
test/issues/1024/C1024T01.c
Normal file
@ -0,0 +1,171 @@
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <sys/mman.h>
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#include <sys/wait.h>
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#include <sys/select.h>
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#include <sys/syscall.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <time.h>
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#include <signal.h>
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#define EXEC_CNT (1024 * 1024)
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#define FORK_CNT 24
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void
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killall()
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{
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fprintf(stderr, "*** C1024T01 NG\n");
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fflush(stderr);
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kill(-getpid(), SIGKILL);
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exit(1);
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}
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void
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print(int c)
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{
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time_t t;
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char tbuf[16];
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time(&t);
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strftime(tbuf, 16, "%H:%M:%S", localtime(&t));
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fprintf(stderr, "%s c=%d\n", tbuf, c);
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fflush(stderr);
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}
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int
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main(int argc, char **argv)
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{
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int *c;
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pid_t pids[FORK_CNT];
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int pfd[FORK_CNT];
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int i;
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int st;
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int maxfd = -1;
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int rc;
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char buf[1024];
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fprintf(stderr, "*** C1024T01 START\n");
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c = mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_ANONYMOUS,
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-1, 0);
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if (c == (void *)-1) {
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perror("mmap");
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exit(1);
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}
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*c = 0;
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print(*c);
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setpgid(0, 0);
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for (i = 0; i < FORK_CNT; i++) {
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int fds[2];
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if (pipe(fds) == -1) {
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perror("pipe");
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exit(1);
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}
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fflush(stderr);
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if ((pids[i] = fork()) == 0) {
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close(fds[0]);
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close(0);
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close(1);
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close(2);
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open("/dev/null", O_RDONLY);
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dup(fds[1]);
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dup(fds[1]);
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while (*c <= EXEC_CNT) {
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pid_t pid;
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if ((pid = fork()) == 0) {
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execl("./mcexec", "./mcexec",
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"/bin/sleep", "0", NULL);
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perror("execve");
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exit(1);
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}
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if (pid == -1) {
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perror("fork");
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exit(1);
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}
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while ((rc = waitpid(pid, &st, 0)) == -1 &&
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errno == EINTR);
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if (rc == -1) {
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perror("wait");
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exit(1);
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}
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if (!WIFEXITED(st) || WEXITSTATUS(st) != 0) {
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sprintf(buf, "exit: %08x\n", st);
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write(2, buf, strlen(buf));
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exit(1);
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}
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__sync_fetch_and_add(c, 1);
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}
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exit(0);
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}
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close(fds[1]);
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pfd[i] = fds[0];
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if (pfd[i] > maxfd)
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maxfd = pfd[i];
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if (pids[i] == -1) {
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perror("fork");
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killall();
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}
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}
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for (;;) {
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fd_set readfds;
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int e = 0;
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struct timeval to;
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FD_ZERO(&readfds);
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for (i = 0; i < FORK_CNT; i++) {
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if (pfd[i] != -1) {
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FD_SET(pfd[i], &readfds);
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e++;
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}
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}
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if (!e)
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break;
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to.tv_sec = 300;
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to.tv_usec = 0;
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rc = select(maxfd + 1, &readfds, NULL, NULL, &to);
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if (rc == 0) {
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print(*c);
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continue;
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}
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for (i = 0; i < FORK_CNT; i++) {
|
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if (pfd[i] != -1 && FD_ISSET(pfd[i], &readfds)) {
|
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if ((rc = read(pfd[i], buf, 1024)) == -1) {
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perror("read");
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killall();
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}
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if (rc == 0) {
|
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close(pfd[i]);
|
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pfd[i] = -1;
|
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}
|
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else {
|
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write(2, buf, rc);
|
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killall();
|
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}
|
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}
|
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}
|
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}
|
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for (i = 0; i < FORK_CNT; i++) {
|
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while ((rc = waitpid(pids[i], &st, 0)) == -1 && errno == EINTR);
|
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if (rc == -1) {
|
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perror("wait");
|
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killall();
|
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}
|
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if (!WIFEXITED(st) || WEXITSTATUS(st) != 0) {
|
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sprintf(buf, "%d: exit: %08x\n", pids[i], st);
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killall();
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}
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}
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print(*c);
|
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if (*c <= EXEC_CNT) {
|
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fprintf(stderr, "*** C1024T01 NG\n");
|
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}
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|
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fprintf(stderr, "*** C1024T01 OK\n");
|
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exit(0);
|
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}
|
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177
test/issues/1024/C1024T02.c
Normal file
177
test/issues/1024/C1024T02.c
Normal file
@ -0,0 +1,177 @@
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#include <stdlib.h>
|
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#include <stdio.h>
|
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#include <string.h>
|
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#include <sys/types.h>
|
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#include <unistd.h>
|
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#include <sys/mman.h>
|
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#include <sys/wait.h>
|
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#include <sys/select.h>
|
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#include <sys/syscall.h>
|
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#include <errno.h>
|
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#include <fcntl.h>
|
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#include <time.h>
|
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#include <signal.h>
|
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#include <sys/ipc.h>
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#include <sys/shm.h>
|
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|
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#define READ_CNT (1024 *1024)
|
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#define FORK_CNT 24
|
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|
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void
|
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killall()
|
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{
|
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fprintf(stderr, "*** C1024T02 NG\n");
|
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fflush(stderr);
|
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kill(-getpid(), SIGKILL);
|
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exit(1);
|
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}
|
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|
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void
|
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print(int c)
|
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{
|
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time_t t;
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char tbuf[16];
|
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|
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time(&t);
|
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strftime(tbuf, 16, "%H:%M:%S", localtime(&t));
|
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fprintf(stderr, "%s c=%d\n", tbuf, c);
|
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fflush(stderr);
|
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}
|
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|
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int
|
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main(int argc, char **argv)
|
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{
|
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key_t key;
|
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int shmid;
|
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int *c;
|
||||
pid_t pids[FORK_CNT];
|
||||
int pfd[FORK_CNT];
|
||||
int i;
|
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int st;
|
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int maxfd = -1;
|
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int rc;
|
||||
char buf[1024];
|
||||
struct shmid_ds shmbuf;
|
||||
|
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fprintf(stderr, "*** C1024T02 START\n");
|
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key = ftok("C1024T02", 1);
|
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if ((shmid = shmget(key, 4096, IPC_CREAT | 0660)) == -1) {
|
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perror("shmget");
|
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exit(1);
|
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}
|
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if ((c = shmat(shmid, NULL, 0)) == (void *)-1) {
|
||||
perror("shmget");
|
||||
exit(1);
|
||||
}
|
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if (shmctl(shmid, IPC_RMID, &shmbuf) == -1) {
|
||||
perror("RMID");
|
||||
exit(1);
|
||||
}
|
||||
|
||||
*c = 0;
|
||||
print(*c);
|
||||
setpgid(0, 0);
|
||||
for (i = 0; i < FORK_CNT; i++) {
|
||||
int fds[2];
|
||||
|
||||
if (pipe(fds) == -1) {
|
||||
perror("pipe");
|
||||
exit(1);
|
||||
}
|
||||
fflush(stderr);
|
||||
if ((pids[i] = fork()) == 0) {
|
||||
int fd;
|
||||
|
||||
close(fds[0]);
|
||||
close(0);
|
||||
close(1);
|
||||
close(2);
|
||||
open("/dev/null", O_RDONLY);
|
||||
dup(fds[1]);
|
||||
dup(fds[1]);
|
||||
if ((fd = open("/proc/self/maps", O_RDONLY)) == -1) {
|
||||
perror("open");
|
||||
exit(1);
|
||||
}
|
||||
while (*c <= READ_CNT) {
|
||||
lseek(fd, 0L, SEEK_SET);
|
||||
if ((rc = read(fd, buf, 1024)) <= 0) {
|
||||
if (rc == 0) {
|
||||
fprintf(stderr, "EOF\n");
|
||||
}
|
||||
else {
|
||||
perror("read");
|
||||
}
|
||||
exit(1);
|
||||
}
|
||||
__sync_fetch_and_add(c, 1);
|
||||
}
|
||||
exit(0);
|
||||
}
|
||||
close(fds[1]);
|
||||
pfd[i] = fds[0];
|
||||
if (pfd[i] > maxfd)
|
||||
maxfd = pfd[i];
|
||||
if (pids[i] == -1) {
|
||||
perror("fork");
|
||||
killall();
|
||||
}
|
||||
}
|
||||
for (;;) {
|
||||
fd_set readfds;
|
||||
int e = 0;
|
||||
struct timeval to;
|
||||
|
||||
FD_ZERO(&readfds);
|
||||
for (i = 0; i < FORK_CNT; i++) {
|
||||
if (pfd[i] != -1) {
|
||||
FD_SET(pfd[i], &readfds);
|
||||
e++;
|
||||
}
|
||||
}
|
||||
if (!e)
|
||||
break;
|
||||
to.tv_sec = 300;
|
||||
to.tv_usec = 0;
|
||||
rc = select(maxfd + 1, &readfds, NULL, NULL, &to);
|
||||
if (rc == 0) {
|
||||
print(*c);
|
||||
continue;
|
||||
}
|
||||
for (i = 0; i < FORK_CNT; i++) {
|
||||
if (pfd[i] != -1 && FD_ISSET(pfd[i], &readfds)) {
|
||||
if ((rc = read(pfd[i], buf, 1024)) == -1) {
|
||||
perror("read");
|
||||
killall();
|
||||
}
|
||||
if (rc == 0) {
|
||||
close(pfd[i]);
|
||||
pfd[i] = -1;
|
||||
}
|
||||
else {
|
||||
write(2, buf, rc);
|
||||
print(*c);
|
||||
killall();
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
for (i = 0; i < FORK_CNT; i++) {
|
||||
while ((rc = waitpid(pids[i], &st, 0)) == -1 && errno == EINTR);
|
||||
if (rc == -1) {
|
||||
perror("wait");
|
||||
killall();
|
||||
}
|
||||
if (!WIFEXITED(st) || WEXITSTATUS(st) != 0) {
|
||||
sprintf(buf, "%d: exit: %08x\n", pids[i], st);
|
||||
killall();
|
||||
}
|
||||
}
|
||||
print(*c);
|
||||
if (*c <= READ_CNT) {
|
||||
fprintf(stderr, "*** C1024T02 NG\n");
|
||||
}
|
||||
|
||||
fprintf(stderr, "*** C1024T02 OK\n");
|
||||
exit(0);
|
||||
}
|
||||
16
test/issues/1024/Makefile
Normal file
16
test/issues/1024/Makefile
Normal file
@ -0,0 +1,16 @@
|
||||
CC=gcc
|
||||
TARGET=C1024T01 C1024T02
|
||||
|
||||
all:: $(TARGET)
|
||||
|
||||
C1024T01: C1024T01.c
|
||||
$(CC) -o C1024T01 C1024T01.c -Wall -g
|
||||
|
||||
C1024T02: C1024T02.c
|
||||
$(CC) -o C1024T02 C1024T02.c -Wall -g
|
||||
|
||||
test:: $(TARGET)
|
||||
sh ./C1024.sh
|
||||
|
||||
clean::
|
||||
rm -f *.o $(TARGET) mcexec
|
||||
24
test/issues/1024/README
Normal file
24
test/issues/1024/README
Normal file
@ -0,0 +1,24 @@
|
||||
【Issue#1024 動作確認】
|
||||
□ テスト内容
|
||||
1. VMAP領域の仮想アドレス回収漏れはプログラム起動時、および、procfsアクセス時
|
||||
に存在する。VMAP領域は1M(1024×1024)ページ分の仮想アドレスが割り当て可能
|
||||
なので、以下を1M回以上繰り返しても問題が発生しないことを確認する。
|
||||
C1024T01 mcexec sleep 0を1M回以上行う
|
||||
C1024T02 /proc/self/mapsのreadを1M回以上行う
|
||||
|
||||
2. 変更がVMAP領域を使用する他の処理に影響ないことをLTPを用いて確認する。
|
||||
C1024T03 process_vm_readv02 (process_vm_readvの処理でVMAPを使用)
|
||||
C1024T04 process_vm_readv03 (process_vm_readvの処理でVMAPを使用)
|
||||
C1024T05 process_vm_writev02 (process_vm_writevの処理でVMAPを使用)
|
||||
|
||||
□ 実行手順
|
||||
$ make test
|
||||
|
||||
実行できない場合は、C1024.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
|
||||
C1024.txt 参照。
|
||||
全ての項目が OK となっていることを確認。
|
||||
Reference in New Issue
Block a user