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Bug #27629 crashes with illegal instruction
Submitted: 2004-03-17 19:45 UTC Modified: 2004-03-18 16:56 UTC
From: sroussey at network54 dot com Assigned:
Status: Closed Package: Reproducible crash
PHP Version: 4.3.5RC3 OS: Linux 2.4.20
Private report: No CVE-ID: None
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From: sroussey at network54 dot com
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 [2004-03-17 19:45 UTC] sroussey at network54 dot com 
Description:
------------
PHP 4.3.5RC3 crashes with illegal instruction

Reproduce code:
---------------
CC=gcc CFLAGS="-O3 -march=$CPU  " CXX=gcc \
./configure \
--with-mysql=/usr \
--with-gd \
--with-dom \
--with-zlib \
--with-xml \
--with-openssl=/usr/local/ssl \
--with-apache=../apache-1.3.29\
--enable-inline-optimization \
--enable-shmop \
--enable-memory-limit
make
make install

Expected result:
----------------
noraml installation...

Actual result:
--------------
Installing PHP SAPI module:       apache
Installing PHP CLI binary:        /usr/local/bin/
Installing PHP CLI man page:      /usr/local/man/man1/
Installing PEAR environment:      /usr/local/lib/php/
make[1]: *** [install-pear-installer] Illegal instruction
make: *** [install-pear] Error 2

I can confirm that php crashes in the make when the php cli is used in install-pear-installer

Same config on php 4.3.4 has no issues.

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 [2004-03-17 19:49 UTC] iliaa@php.net 
Thank you for this bug report. To properly diagnose the problem, we
need a backtrace to see what is happening behind the scenes. To
find out how to generate a backtrace, please read
http://bugs.php.net/bugs-generating-backtrace.php

Once you have generated a backtrace, please submit it to this bug
report and change the status back to "Open". Thank you for helping
us make PHP better.

set CFLAGS to -g, add --enable-debug to your configure and 
if it still crashes generate a backtrace.
 [2004-03-17 20:19 UTC] sroussey at network54 dot com 
The line in the Makefile gets expanded to this:

/root/webserver_software_tmp/php-4.3.5RC3/sapi/cli/php -n -dshort_open_tag=0 -dsafe_mode=0 /root/webserver_software_tmp/php-4.3.5RC3/pear/install-pear.php -d "/usr/local/lib/php" -b "/usr/local/bin" /root/webserver_software_tmp/php-4.3.5RC3/pear/package-*.xml

gdb on the above has a bt of:

Starting program: /root/webserver_software_tmp/php-4.3.5RC3/sapi/cli/php -n -dshort_open_tag=0 -dsafe_mode=0 /root/webserver_software_tmp/php-4.3.5RC3/pear/install-pear.php -d "/usr/local/lib/php" -b "/usr/local/bin" /root/webserver_software_tmp/php-4.3.5RC3/pear/package-*.xml

Program received signal SIGILL, Illegal instruction.
0x08160493 in sub_function ()
(gdb) bt
#0  0x08160493 in sub_function ()
#1  0x0816e7f2 in execute ()
#2  0x081711be in execute ()
#3  0x081711be in execute ()
#4  0x08164547 in zend_execute_scripts ()
#5  0x0813cf2e in php_execute_script ()
#6  0x08174801 in main ()
#7  0x42015967 in __libc_start_main () from /lib/i686/libc.so.6
 [2004-03-17 20:28 UTC] iliaa@php.net 
What this backtrace generated with debug build of PHP? 
The backtrace should've been more detailed if it was.
 [2004-03-17 20:28 UTC] sroussey at network54 dot com 
Well, that was the backtrace before I did a debug version. When I changed the CFLAGS to add -g as you suggested and added --enable-debug then it no longer crashes.
 [2004-03-17 20:31 UTC] sroussey at network54 dot com 
BTW: I have an strace (from the version that crashes -- that is, without the debug option)

# tail trace_file -n 50
lstat64("/root/webserver_software_tmp", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/root/webserver_software_tmp/php-4.3.5RC3", {st_mode=S_IFDIR|0775, st_size=4096, ...}) = 0
lstat64("/root/webserver_software_tmp/php-4.3.5RC3/pear", {st_mode=S_IFDIR|0775, st_size=4096, ...}) = 0
lstat64("/root/webserver_software_tmp/php-4.3.5RC3/pear/PEAR", {st_mode=S_IFDIR|0775, st_size=4096, ...}) = 0
lstat64("/root/webserver_software_tmp/php-4.3.5RC3/pear/PEAR/Registry.php", {st_mode=S_IFREG|0664, st_size=15079, ...}) = 0
open("/root/webserver_software_tmp/php-4.3.5RC3/pear/PEAR/Registry.php", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0664, st_size=15079, ...}) = 0
fstat64(3, {st_mode=S_IFREG|0664, st_size=15079, ...}) = 0
lseek(3, 0, SEEK_CUR)                   = 0
lseek(3, 0, SEEK_SET)                   = 0
read(3, "<?php\n//\n// +-------------------"..., 8192) = 8192
read(3, "        return $err;\n           "..., 8192) = 6887
brk(0)                                  = 0x847e000
brk(0x8482000)                          = 0x8482000
brk(0)                                  = 0x8482000
brk(0x8485000)                          = 0x8485000
brk(0)                                  = 0x8485000
brk(0x8487000)                          = 0x8487000
brk(0)                                  = 0x8487000
brk(0x8488000)                          = 0x8488000
read(3, "", 8192)                       = 0
close(3)                                = 0
stat64("/root/webserver_software_tmp/php-4.3.5RC3/pear/System.php", {st_mode=S_IFREG|0664, st_size=17972, ...}) = 0
getcwd("/root/webserver_software_tmp/php-4.3.5RC3", 4096) = 42
lstat64("/root", {st_mode=S_IFDIR|0750, st_size=4096, ...}) = 0
lstat64("/root/webserver_software_tmp", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/root/webserver_software_tmp/php-4.3.5RC3", {st_mode=S_IFDIR|0775, st_size=4096, ...}) = 0
lstat64("/root/webserver_software_tmp/php-4.3.5RC3/pear", {st_mode=S_IFDIR|0775, st_size=4096, ...}) = 0
lstat64("/root/webserver_software_tmp/php-4.3.5RC3/pear/System.php", {st_mode=S_IFREG|0664, st_size=17972, ...}) = 0
open("/root/webserver_software_tmp/php-4.3.5RC3/pear/System.php", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0664, st_size=17972, ...}) = 0
fstat64(3, {st_mode=S_IFREG|0664, st_size=17972, ...}) = 0
lseek(3, 0, SEEK_CUR)                   = 0
lseek(3, 0, SEEK_SET)                   = 0
close(3)                                = 0
stat64("/root/webserver_software_tmp/php-4.3.5RC3/pear/PEAR.php", {st_mode=S_IFREG|0664, st_size=29746, ...}) = 0
getcwd("/root/webserver_software_tmp/php-4.3.5RC3", 4096) = 42
lstat64("/root", {st_mode=S_IFDIR|0750, st_size=4096, ...}) = 0
lstat64("/root/webserver_software_tmp", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/root/webserver_software_tmp/php-4.3.5RC3", {st_mode=S_IFDIR|0775, st_size=4096, ...}) = 0
lstat64("/root/webserver_software_tmp/php-4.3.5RC3/pear", {st_mode=S_IFDIR|0775, st_size=4096, ...}) = 0
lstat64("/root/webserver_software_tmp/php-4.3.5RC3/pear/PEAR.php", {st_mode=S_IFREG|0664, st_size=29746, ...}) = 0
open("/root/webserver_software_tmp/php-4.3.5RC3/pear/PEAR.php", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0664, st_size=29746, ...}) = 0
fstat64(3, {st_mode=S_IFREG|0664, st_size=29746, ...}) = 0
lseek(3, 0, SEEK_CUR)                   = 0
lseek(3, 0, SEEK_SET)                   = 0
close(3)                                = 0
--- SIGILL (Illegal instruction) ---
+++ killed by SIGILL +++
 [2004-03-18 08:45 UTC] iliaa@php.net 
Please generate a backtrace with a DEBUG version of PHP 
without heavy optimization flags.
 [2004-03-18 16:56 UTC] sroussey at network54 dot com 
Must have been a gcc issue. Restarted machine and unpacked a fresh tar.gz and it works fine. Soory to waste any time.
 
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