php5-cgi crashed with SIGSEGV in zend_get_constant_ex()

[Adrian Almenar]

Binary package hint: php5

Executing php5-cgi with spawn-fcgi using nginx produces this error.

ProblemType: Crash
DistroRelease: Ubuntu 10.04
Package: php5-cgi 5.3.2-1ubuntu3
ProcVersionSignature: Ubuntu 2.6.32-17.26-generic 2.6.32.10+drm33.1
Uname: Linux 2.6.32-17-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Wed Apr 7 16:00:15 2010
ExecutablePath: /usr/bin/php5-cgi
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta amd64 (20100318)
ProcCmdline: /usr/bin/php-cgi
ProcEnviron: PATH=(custom, no user)
SegvAnalysis:
 Segfault happened at: 0x686dbd <zend_get_constant_ex+29>: cmpb $0x5c,(%rdi)
 PC (0x00686dbd) ok
 source "$0x5c" ok
 destination "(%rdi)" (0x01ede0a8) not located in a known VMA region (needed writable region)!
SegvReason: writing unknown VMA
Signal: 11
SourcePackage: php5
StacktraceTop:
 zend_get_constant_ex ()
 zval_update_constant_ex ()
 zend_hash_apply_with_argument ()
 zend_update_class_constants ()
 zend_std_get_static_property ()
Title: php5-cgi crashed with SIGSEGV in zend_get_constant_ex()
UserGroups:

[Scott Moser (smoser)]

Thank you for taking the time to report this bug.

Could you please provide some information on how you've set up php5-cgi/spawn-fcgi/nginx (appropriate config files and such)?
Also, does this occur on all php scripts ?

[Ondřej Surý (ondrej)]

Also please install php5-dbg and get a full backtrace.

http://bugs.php.net/bugs-generating-backtrace.php

[Lauri Pokka (lauripokka)]

This looks similar to segfault issue I'm having with lycid beta (well, at least beginning of the trace looked similar). In my case PHP segfaults right away with mediawiki/gallery2 (no nginx here). I generated a backtrace following /usr/share/doc/apache2.2-common/README.backtrace, hope it's useful.

[dino99 (9d9)]

This version is outdated and no more supported