标签归档:Segfault in libnss when using libcurl from php

Segfault in libnss when using libcurl from php

$ tools/php-5.2.17/bin/php test1.php
* About to connect() to www.google.com port 443 (#0)
* Trying 74.125.192.103… * connected
* Connected to www.google.com (74.125.192.103) port 443 (#0)
* Initializing NSS with certpath: sql:/etc/pki/nssdb
Segmentation fault (core dumped)When the url in the script is changed to use HTTP instead of HTTPS, there is no segfault.
Steps To Reproduce Run the script:
$ cat test1.php
< ?php
$urlEndPoint = “https://www.google.com/search”;
$headerArray = array();
$ch = curl_init();
curl_setopt($ch,CURLOPT_POST,true);curl_setopt($ch,CURLOPT_URL, $urlEndPoint);
/*curl_setopt($ch,CURLOPT_HTTPHEADER, $headerArray);
curl_setopt($ch, CURLOPT_POSTFIELDS, $postArray); */

curl_setopt($ch, CURLOPT_RETURNTRANSFER,1);
curl_setopt($ch,CURLOPT_HEADER, true);
curl_setopt($ch,CURLOPT_FOLLOWLOCATION, false);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch, CURLOPT_USERAGENT, ‘Mozilla/4.0 (compatible; MSIE 5.01; Windows NT 5.0’);
curl_setopt($ch, CURLOPT_VERBOSE, true);

if (!$result = curl_exec($ch)) {
print (curl_error($ch));
}

curl_close ($ch);

echo print_r($result,true);
?>

内核日志:
tail -f /var/log/messages
kernel: php[26564]: segfault at 8048 ip 00007f7a72fede9c sp 00007fffec90edf0 error 4 in libsqlite3.so.0.8.6[7f7a72fd1000+8c000]
gdb记录:
Program received signal SIGSEGV, Segmentation fault.
0x00007fffe9651e9c in sqlite3_file_control () from /usr/lib64/libsqlite3.so.0

 

在Centos的bug列表中,能够找到关于这个bug的说明:

https://bugs.centos.org/view.php?id=7399

https://www.mankier.com/5/cert9.db

Quick fix:

mv /etc/pki/nssdb /etc/pki/nssdb.bak
yum -y reinstall nss