https://bz.apache.org/SpamAssassin/show_bug.cgi?id=7447
Bug ID: 7447
Summary: [PATCH] Memory leak in Mail::Spamassassin::Message
Product: Spamassassin
Version: SVN Trunk (Latest Devel Version)
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P2
Component: Libraries
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: Undefined
I've found a memory leak in the Mail::Spamassassin::Message module. The Message
object initializes the parse_queue array with one element which contains a
reference back to the Message object. parse_queue is deleted when parse_body()
is called. However, if parse_body() is never called before the Message object
is destroyed, the array will remain with the circular reference inside it and
the whole object will leak.
This usually isn't serious because parse_body() or something that calls it is
usually called before the message is destroyed. But this isn't guaranteed. In
particular, one code path in sa-learn (when the message to be learned contains
SpamAssassin headers) will trigger this leak, and with many messages (~30k)
this can easily cause sa-learn to consume gigabytes of memory.
The attached patch addresses this by deleting parse_queue in the finish()
routine.
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