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| Subject: | Help needed with libsigsegv2.10-2 + cygwin 2.4.1-1 + win7 |
| From: | ari =?ISO-8859-1?Q?kumpum=E4ki?= <ari DOT kumpumaki AT dnainternet DOT net> |
| To: | cygwin AT cygwin DOT com |
| Date: | Fri, 18 Mar 2016 21:36:06 +0200 |
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Hi all
Why the following test code works fluently in Linux and cygwin 1.5.
But with cygwin 2.4.1 it gives a segmentation fault, when running "x =
mem[filePageSize];"
--- Process 101084, exception c0000005 at 0040132E
--- Process 101084 thread 101312 exited with status 0xc0000005
--- Process 101084 thread 101336 exited with status 0xc0000005
--- Process 101084 thread 99348 exited with status 0xc0000005
--- Process 101084 exited with status 0xc0000005
Thank you in advance.
br. ari kumpumäki
the used test code:l
#include <stdlib.h>
#include <sigsegv.h>
#include <stdio.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <sys/stat.h>
#include <unistd.h>
#define ALIGN_TO_PAGE_SIZE(x) (((x + filePageSize - 1) / filePageSize) *
filePageSize)
static volatile int count=0;
static volatile int filePageSize;
static void sigsegv_handler(void *failedAddress, unsigned x)
{
(void) x;
unsigned pageAddr = ((unsigned) failedAddress & ~(filePageSize - 1));
mprotect((void *) pageAddr, filePageSize, PROT_WRITE | PROT_READ);
count++;
}
void init(void)
{
if (sigsegv_install_handler((sigsegv_handler_t) & sigsegv_handler) <
0)
{
fprintf(stderr, "ERROR: installing sigsegv handler failed\n ");
exit(-1);
}
filePageSize = sysconf(_SC_PAGESIZE);
}
char *allocMem(int size)
{
return (char *) mmap(0, ALIGN_TO_PAGE_SIZE(size), PROT_NONE,
MAP_SHARED | MAP_ANONYMOUS | MAP_NORESERVE, -1, 0);
}
void main(void)
{
init();
char *mem = allocMem(filePageSize * 2);
char x;
if(mem)
{
x = mem[0];
printf("%d\n", x);
x = mem[filePageSize];
printf("%d\n", x);
}
}
the installed packages:
Cygwin Package Information
Package Version Status
_autorebase 001003-2 OK
alternatives 1.3.30c-10 OK
autobuild 5.3-1 OK
autoconf 13-1 OK
autoconf2.1 2.13-12 OK
autoconf2.5 2.69-3 OK
autogen 5.18.4-1 OK
automake 9-1 OK
automake1.10 1.10.3-2 OK
automake1.11 1.11.6-2 OK
automake1.12 1.12.6-2 OK
automake1.13 1.13.4-1 OK
automake1.14 1.14.1-2 OK
automake1.15 1.15-1 OK
automake1.4 1.4p6-11 OK
automake1.5 1.5-11 OK
automake1.6 1.6.3-12 OK
automake1.7 1.7.9-11 OK
automake1.8 1.8.5-11 OK
automake1.9 1.9.6-11 OK
base-cygwin 3.8-1 OK
base-files 4.2-4 OK
bash 4.3.42-4 OK
bashdb 3.1_0.09-1 OK
binutils 2.25-4 OK
byacc 20150711-1 OK
bzip2 1.0.6-2 OK
ca-certificates 2.6-1 OK
cmake 3.3.2-1 OK
coreutils 8.25-1 OK
crypt 1.3-1 OK
csih 0.9.9-1 OK
cygrunsrv 1.62-1 OK
cygutils 1.4.15-2 OK
cygwin 2.4.1-1 OK
cygwin-devel 2.4.1-1 Incomplete
dash 0.5.8-3 OK
desktop-file-utils 0.22-2 OK
diffutils 3.3-3 OK
editrights 1.03-1 OK
file 5.25-1 OK
findutils 4.6.0-1 OK
gamin 0.1.10-15 OK
gawk 4.1.3-1 OK
gcc-cilkplus 5.3.0-3 OK
gcc-core 5.3.0-3 OK
gcc-g++ 5.3.0-3 OK
gdb 7.10.1-1 OK
getent 2.18.90-4 OK
gettext 0.19.5.1-2 OK
gettext-devel 0.19.5.1-2 OK
git 2.7.4-1 OK
grep 2.24-1 OK
groff 1.22.3-1 OK
gsettings-desktop-schemas 3.18.1-1 OK
gzip 1.6-1 OK
hostname 3.13-1 OK
indent 2.2.11-1 OK
info 6.1-2 OK
intltool 0.51.0-1 OK
ipc-utils 1.0-1 OK
less 481-1 OK
libarchive13 3.1.2-3 OK
libargp 20110921-2 OK
libatomic1 5.3.0-3 OK
libattr1 2.4.46-1 OK
libblkid1 2.25.2-2 OK
libbz2_1 1.0.6-2 OK
libcharset1 1.14-3 OK
libcilkrts5 5.3.0-3 OK
libcloog-isl4 0.18.0-2 OK
libcom_err2 1.42.12-2 OK
libcroco0.6_3 0.6.9-1 OK
libcurl4 7.47.1-1 OK
libdb4.8 4.8.30-1 OK
libedit0 20130712-1 OK
libelf0 0.8.13-2 OK
libelf0-devel 0.8.13-2 OK
libexpat1 2.1.1-1 OK
libfam0 0.1.10-15 OK
libffi6 3.2.1-1 OK
libgcc1 5.3.0-3 OK
libgdbm4 1.8.3-20 OK
libglib2.0-devel 2.46.2-3 OK
libglib2.0_0 2.46.2-3 OK
libgmp10 6.1.0-3p1 OK
libgomp1 5.3.0-3 OK
libgssapi_krb5_2 1.13.2-4 OK
libguile17 1.8.8-1 OK
libiconv 1.14-3 OK
libiconv-devel 1.14-3 OK
libiconv2 1.14-3 OK
libidn11 1.29-1 OK
libintl-devel 0.19.5.1-2 OK
libintl8 0.19.5.1-2 OK
libisl10 0.11.1-2 OK
libisl13 0.14.1-1 OK
libk5crypto3 1.13.2-4 OK
libkrb5_3 1.13.2-4 OK
libkrb5support0 1.13.2-4 OK
liblrzip0 0.621-1 OK
libltdl7 2.4.6-3 OK
liblzma5 5.2.2-1 OK
liblzo2_2 2.08-1 OK
libmpc3 1.0.3-1 OK
libmpfr4 3.1.4-1 OK
libncursesw10 6.0-4.20160305 OK
libnettle4 2.7.1-1 OK
libnghttp2_14 1.7.1-1 OK
libopenldap2_4_2 2.4.42-1 OK
libopenssl100 1.0.2g-3 OK
libopts-devel 5.18.4-1 OK
libopts25 5.18.4-1 OK
libp11-kit0 0.22.1-1 OK
libpcre-devel 8.38-2 OK
libpcre1 8.38-2 OK
libpcre16_0 8.38-2 OK
libpcre32_0 8.38-2 OK
libpcrecpp0 8.38-2 OK
libpcreposix0 8.38-2 OK
libpipeline1 1.4.0-1 OK
libpsl5 0.12.0-1 OK
libquadmath0 5.3.0-3 OK
libreadline-devel 6.3.8-1 OK
libreadline7 6.3.8-1 OK
libsasl2_3 2.1.26-9 OK
libsigsegv-devel 2.10-2 OK
libsigsegv2 2.10-2 OK
libsmartcols1 2.25.2-2 OK
libsqlite3_0 3.11.1-1 OK
libssh2_1 1.7.0-1 OK
libssp0 5.3.0-3 OK
libstdc++6 5.3.0-3 OK
libtasn1_6 4.7-1 OK
libtool 2.4.6-3 OK
libunistring2 0.9.6-1 OK
libuuid-devel 2.25.2-2 OK
libuuid1 2.25.2-2 OK
libvtv0 5.3.0-3 OK
libxml2 2.9.3-1 OK
libzip 0.11.2-2 OK
libzip-devel 0.11.2-2 OK
libzip2 0.11.2-2 OK
libzzip-devel 0.13.62-1 OK
libzzip0.13 0.13.62-1 OK
login 1.11-1 OK
lynx 2.8.7-1 OK
lz4 131-1 OK
lzip 1.17-1 OK
m4 1.4.17-2 OK
make 4.1-1 OK
man-db 2.7.4-1 OK
mintty 2.2.3-0 OK
ncurses 6.0-4.20160305 OK
openssh 7.2p2-1 OK
openssl 1.0.2g-3 OK
p11-kit 0.22.1-1 OK
p11-kit-trust 0.22.1-1 OK
p7zip 15.09-2 OK
perl 5.22.1-2 OK
perl-Carp 1.38-1 OK
perl-Encode-Locale 1.05-1 OK
perl-Error 0.17024-1 OK
perl-File-Listing 6.04-5 OK
perl-HTML-Parser 3.72-1 OK
perl-HTML-Tagset 3.20-5 OK
perl-HTTP-Cookies 6.01-5 OK
perl-HTTP-Daemon 6.01-5 OK
perl-HTTP-Date 6.02-5 OK
perl-HTTP-Message 6.11-1 OK
perl-HTTP-Negotiate 6.01-5 OK
perl-IO-HTML 1.001-2 OK
perl-libwww-perl 6.15-1 OK
perl-LWP-MediaTypes 6.02-5 OK
perl-Net-HTTP 6.09-1 OK
perl-Pod-Simple 3.32-1 OK
perl-TermReadKey 2.33-1 OK
perl-Unicode-Normalize 1.25-1 OK
perl-URI 1.71-1 OK
perl-WWW-RobotRules 6.02-5 OK
perl-XML-Parser 2.44-2 OK
perl_autorebase 5.22.1-2 OK
perl_base 5.22.1-2 OK
pkg-config 0.29-1 OK
popt 1.16-1 OK
python 2.7.10-1 OK
python3 3.4.3-1 OK
rebase 4.4.2-1 OK
rsync 3.1.2-1 OK
run 1.3.4-2 OK
sed 4.2.2-3 OK
shared-mime-info 1.6-3 OK
tar 1.28-1 OK
terminfo 6.0-4.20160305 OK
texinfo 6.1-2 OK
tzcode 2016b-1 OK
unzip 6.0-15 OK
util-linux 2.25.2-2 OK
vim-minimal 7.4.1558-1 OK
w32api-headers 4.0.4-1 OK
w32api-runtime 4.0.4-1 OK
which 2.20-2 OK
windows-default-manifest 6.4-1 OK
xz 5.2.2-1 OK
yasm 1.3.0-1 OK
zip 3.0-12 OK
zlib-devel 1.2.8-3 OK
zlib0 1.2.8-3 OK
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