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Bug #20228

closed

Memory leak in Regexp timeout

Bug #20228: Memory leak in Regexp timeout

Added by peterzhu2118 (Peter Zhu) almost 2 years ago. Updated over 1 year ago.

Status:
Closed
Assignee:
-
Target version:
-
ruby -v:
Backport:
3.0: UNKNOWN, 3.1: DONTNEED, 3.2: WONTFIX, 3.3: DONE
[ruby-core:116514]

Description

GitHub PR: https://github.com/ruby/ruby/pull/9765

If a Regexp::TimeoutError is raised, the stk_base and OnigRegion will leak.

For example:

Regexp.timeout = 0.001 regex = /^(a*)*$/ str = "a" * 1000000 + "x" 10.times do 100.times do begin regex =~ str rescue end end puts `ps -o rss= -p #{$$}` end

Before:

328800 632416 934368 1230448 1531088 1831248 2125072 2414384 2703440 2995664

After:

39280 47888 49024 56240 56496 56512 56592 56592 56720 56720
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