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Bug #69716 segfault when enabled mysqli.so module
Submitted: 2015-05-28 06:18 UTC Modified: 2015-05-29 02:35 UTC
From: xiangzhai83 at gmail dot com Assigned:
Status: Closed Package: MySQLi related
PHP Version: master-Git-2015-05-28 (Git) OS: ArchLinux
Private report: No CVE-ID: None
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 [2015-05-28 06:18 UTC] xiangzhai83 at gmail dot com 
Description:
------------
$ gdb php
$ r -v

...
Program received signal SIGSEGV, Segmentation fault.
zend_startup_module_ex (module=0x0) at /data/project/php/php-src/Zend/zend_API.c:1818
1818		if (module->module_started) {

$ print 
$1 = (zend_module_entry *) 0x0

so zend_module_entry* module is a NULL ptr.

when disabled mysqli.so module, then php -v is ok.

gcc 5.1.1
ArchLinux 4.0.4-2-ARCH ... x86_64 GNU/Linux
libmariadbclient 10.0.18

my configure argument is almost like ArchLinux`s PKGBUILD https://projects.archlinux.org/svntogit/packages.git/tree/trunk/PKGBUILD?h=packages/php#n61

Regards,
Leslie Zhai

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 [2015-05-29 02:35 UTC] xiangzhai83 at gmail dot com
-Status: Open +Status: Closed
 [2015-05-29 02:35 UTC] xiangzhai83 at gmail dot com 
mysqli.so module worked for PHP-7.x git master, but I have no idea why it failed to work yesterday ;-) https://twitter.com/xiangzhai/status/604113173260558336/photo/1

for DEBUG patch

diff --git a/Zend/zend_API.c b/Zend/zend_API.c
index 757becf..7a7a7c6 100644
--- a/Zend/zend_API.c
+++ b/Zend/zend_API.c
@@ -1815,6 +1815,9 @@ ZEND_API int zend_startup_module_ex(zend_module_entry *module) /* {{{ */
        size_t name_len;
        zend_string *lcname;
 
+    if (module)
+        printf("DEBUG: %s line %d: %s\n", __func__, __LINE__, module->name);
+
        if (module->module_started) {
                return SUCCESS;
        }
 
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