ID: 42682
Comment by: hans at parse dot nl
Reported By: Slig at free dot fr
Status: Open
Bug Type: Streams related
Operating System: linux-64
PHP Version: 5CVS-2007-10-11 (snap)
New Comment:
Just did a final test and recompiled php with gcc optimization set to
-O1 instead of -O2 used in previous tests, and i can confirm that
compiling with -O1 eliminates the problem aswell.
So to summarize:
-changing this_fd from int to long eliminates the problem
-compiling without openssl eliminates the problem, though this is
obviously not an option in most cases
-compiling without gcc optimizations eliminates the problem
So now the question is, is this a gcc, a php or a openssl problem?
I'm willing to test and provide you with all necessary information.
Previous Comments:
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[2008-04-15 10:52:40] hans at parse dot nl
Problem persists in 5.2.6RC4.
Tested using the testcase above, on a freshly installed Athlon64 Gentoo
system. Tested against the following openssl versions:
openssl-0.9.8g
openssl-0.9.8e
openssl-0.9.7i
Recompiled php-5.2.6RC4 ebuild after each openssl version change. All
versions exhibit same erroneous behavior, as described in the initial
bugreport.
Compiling php without openssl support eliminates the problem, as
reported earlier.
Target: x86_64-pc-linux-gnu
Thread model: posix
gcc version 4.1.2 (Gentoo 4.1.2 p1.0.2)
glibc-2.6.1
php-5.2.6RC4 (using dev-lang/php-5.2.6_rc4 gentoo ebuild)
------------------------------------------------------------------------
[2008-02-22 10:50:32] hans at parse dot nl
This is stil a pretty serious issue on x86_64. Just ran into this one
while swapping out a bunch of x86 webservers for new x86_64 boxes.
Both the new and the old boxes run Gentoo, with the same gcc version,
same php version. The 32 bit boxes were fine, the new 64 bit boxes fail
on all stream fread's due to this issue.
Target: x86_64-pc-linux-gnu
Thread model: posix
gcc version 4.1.2 (Gentoo 4.1.2 p1.0.2)
glibc-2.6.1
openssl-0.9.8g
php-5.2.5 (using php-5.2.5-r1 gentoo ebuild)
------------------------------------------------------------------------
[2007-10-22 11:00:26] [EMAIL PROTECTED]
Is there difference between openssl versions on those Suse/Centos
machines?
------------------------------------------------------------------------
[2007-10-12 18:25:57] margus at zone dot ee
Perhaps it helps if I give test results on different machines and where
and how it manifests:
stream_select() works flawlessly without patching on:
- my multiple 32bit machines. Those have SuSE90 or SuSE93 installed.
- my multiple 64bit SuSE10 machines
stream_select() works only when patched 'long this_fd;' or 'long
this_fd=0;' on:
- my multiple 64bit CentOS 4.5 systems (Xeon Quadcore)
stream_select() works only when patched 'long this_fd=0;'
(stream_select segfaults without variable initializing) on:
- my one 64bit CentOS 4.5 machine (Opteron Dualcore).
Origin of this bug must be somewhere in php_stream_cast() or even
lower. I tried also compiling without OpenSSL support and yes, the bug
along with SSL socket support can be "eliminated" this way too :)
------------------------------------------------------------------------
[2007-10-12 17:17:10] Slig at free dot fr
No, just setting it to 0 doesn't work.
And margus is true, using 'long this_fd;' it works (with or without
setting it to 0). I don't say it's the right solution, perhaps it's more
something to change in php_stream_cast(), i don't know.
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the rest of the comments, please view the bug report online at
http://bugs.php.net/42682
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Edit this bug report at http://bugs.php.net/?id=42682&edit=1
