https://bz.apache.org/bugzilla/show_bug.cgi?id=60353
Bug ID: 60353
Summary: Uploading a large file causes mod_fcgid to overuse
memory and eventually crash
Product: Apache httpd-2
Version: 2.5-HEAD
Hardware: PC
Status: NEW
Severity: normal
Priority: P2
Component: mod_fcgid
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 34428
--> https://bz.apache.org/bugzilla/attachment.cgi?id=34428&action=edit
upload script
Hi,
When i'm uploading a large file (~270 MB) using the attached script
(upload.php), mod_fcgid tries to send it to the PHP process and causes a crash
in httpd.exe.
The proc_write_ipc function gets the apr_bucket_brigade list and sends the
buckets one by one to the PHP process and is using a lot of memory until a
point where 'malloc' returns NULL (through allocator_alloc ) and httpd
immediately crashes.
I've attached a suggestion for a patch to this function where the httpd is
using significantly less memory and the crash is gone. It basically frees each
apr_bucket after it is sent to the php process.
thanks!
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