Bug 51904 - output to stderr from cgi script causes script to hang *during uploads*
Summary: output to stderr from cgi script causes script to hang *during uploads*
Alias: None
Product: Apache httpd-2
Classification: Unclassified
Component: mod_cgi (show other bugs)
Version: 2.2.17
Hardware: PC Linux
: P2 normal (vote)
Target Milestone: ---
Assignee: Apache HTTPD Bugs Mailing List
Keywords: MassUpdate
Depends on:
Reported: 2011-09-28 05:33 UTC by Hrunting Johnson
Modified: 2018-11-07 21:08 UTC (History)
0 users


Note You need to log in before you can comment on or make changes to this bug.
Description Hrunting Johnson 2011-09-28 05:33:59 UTC
Similar problems 39342 and 22030.

In 39342, the problem was writing a bunch of data to STDOUT before reading all of STDIN.  I can understand why that would be problematic (output to client before input from client is complete).

I see the same behavior as 39342 when writing a bunch of data to STDERR before fully reading STDIN.  I assume it's the same root issue as 39342: Apache simply doesn't do anything with the CGI script's other file handles (STDOUT *or* STDERR) while it's sending the script the data.

This prevents the CGI script from potentially logging data while it's reading data from Apache.  That functionality shouldn't be prevented.  I can produce a test case if necessary, as I'm hitting the bug today.
Comment 1 William A. Rowe Jr. 2018-11-07 21:08:25 UTC
Please help us to refine our list of open and current defects; this is a mass update of old and inactive Bugzilla reports which reflect user error, already resolved defects, and still-existing defects in httpd.

As repeatedly announced, the Apache HTTP Server Project has discontinued all development and patch review of the 2.2.x series of releases. The final release 2.2.34 was published in July 2017, and no further evaluation of bug reports or security risks will be considered or published for 2.2.x releases. All reports older than 2.4.x have been updated to status RESOLVED/LATER; no further action is expected unless the report still applies to a current version of httpd.

If your report represented a question or confusion about how to use an httpd feature, an unexpected server behavior, problems building or installing httpd, or working with an external component (a third party module, browser etc.) we ask you to start by bringing your question to the User Support and Discussion mailing list, see [https://httpd.apache.org/lists.html#http-users] for details. Include a link to this Bugzilla report for completeness with your question.

If your report was clearly a defect in httpd or a feature request, we ask that you retest using a modern httpd release (2.4.33 or later) released in the past year. If it can be reproduced, please reopen this bug and change the Version field above to the httpd version you have reconfirmed with.

Your help in identifying defects or enhancements still applicable to the current httpd server software release is greatly appreciated.