Issue #20194 has been reported by peterzhu2118 (Peter Zhu). ---------------------------------------- Bug #20194: Memory leak with TracePoint on bmethod https://bugs.ruby-lang.org/issues/20194 * Author: peterzhu2118 (Peter Zhu) * Status: Open * Priority: Normal * Backport: 3.0: UNKNOWN, 3.1: REQUIRED, 3.2: REQUIRED, 3.3: REQUIRED ---------------------------------------- GitHub PR: https://github.com/ruby/ruby/pull/9614 When disabling the TracePoint on bmethod, the hooks list is not freed. For example: ```ruby obj = Object.new obj.define_singleton_method(:foo) {} bmethod = obj.method(:foo) tp = TracePoint.new(:return) {} 10.times do 100_000.times do tp.enable(target: bmethod) {} end puts `ps -o rss= -p #{$$}` end ``` Before: ``` 18208 22832 26528 29728 34000 37776 40864 44400 47680 51504 ``` After: ``` 16688 17168 17168 17248 17696 17760 17824 17824 17856 17920 ``` -- https://bugs.ruby-lang.org/