https://issues.apache.org/bugzilla/show_bug.cgi?id=47178
Summary: ab segfaults when called with a large -n parameter
Product: Apache httpd-2
Version: 2.3-HEAD
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: support
AssignedTo: [email protected]
ReportedBy: [email protected]
Created an attachment (id=23637)
--> (https://issues.apache.org/bugzilla/attachment.cgi?id=23637)
Patch adding a check of the result of the allocation of stats
Calling ab (the Apache benchmark utility) with the argument -n 1234567890
http://example.org (or any -n other value smaller than MAXINT, but bigger than
the virtual memory divided by 32) causes ab to segfault. This is a result of
using a dynamically allocated data structure(line ~1260) whose allocation(line
1559) is not checked. The size of this data structure is linearly dependent of
the -n value. This may be a design bug in itself since it prevents ab runs with
a potentially infinite number of requests, e.g. to test how many requests can
be served in 42 seconds. The attached patch makes ab exit properly when the
memory allocation fails.
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