#39869 [Opn->Csd]: safe_read does not initialize errno
| From: | dmitry@php.net | Date: | Tue, 19 Dec 2006 09:18:40 +0000 |
| Subject: | #39869 [Opn->Csd]: safe_read does not initialize errno | ||
| References: | 1 | Groups: | php.bugs |
| Request: | Send a blank email to php-bugs+get-106538@lists.php.net to get a copy of this message | ||
ID: 39869
Updated by: dmitry@php.net
Reported By: michiel at boland dot org
-Status: Open
+Status: Closed
Bug Type: CGI related
Operating System: Solaris
PHP Version: 5.2.0
Assigned To: dmitry
New Comment:
Fixed in CVS HEAD and PHP_5_2.
Previous Comments:
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[2006-12-18 18:10:19] michiel at boland dot org
If errno is already EINTR before entry into safe_read,
then that function will loop forever if the read() call
returns 0
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[2006-12-18 17:33:01] dmitry@php.net
Could you please provide which "errno" and "ret" values leads php into
this loop.
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[2006-12-18 15:20:44] michiel at boland dot org
Description:
------------
When using PHP in FastCGI mode, PHP has a tendency to once
in a while spin in a tight loop, hogging the cpu.
The fix is to initialize errno to 0 before any call to read()
in the safe_read function in sapi/cgi/fastcgi.c
Reproduce code:
---------------
Not applicable
Expected result:
----------------
n.a.
Actual result:
--------------
n.a.
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Edit this bug report at http://bugs.php.net/?id=39869&edit=1