Issue #22009 has been updated by yahonda (Yasuo Honda). File error.log added Here is the entire log generated by `make test-spec MSPECOPT="spec/ruby/library/objectspace/dump_all_spec.rb" 2>&1 | tee error.log` ---------------------------------------- Bug #22009: ERROR: AddressSanitizer: attempting to call malloc_usable_size() for pointer which is not owned: with ASAN and DEBUG enabled build https://bugs.ruby-lang.org/issues/22009#change-117079 * Author: yahonda (Yasuo Honda) * Status: Open * Backport: 3.3: UNKNOWN, 3.4: UNKNOWN, 4.0: UNKNOWN ---------------------------------------- ### Background I am using ruby-head built and deployed by https://github.com/ruby/ruby-dev-builder for my repository. https://github.com/rsim/oracle-enhanced/blob/master/.github/workflows/ruby_h... Recently, the `ruby-head` version has not been updated since `ruby 4.1.0dev (2026-03-29T05:57:51Z :detached: f9175a9e5f) +PRISM [aarch64-linux]`. According to the ruby-dev-builder log file: - The last successful build : https://github.com/ruby/ruby-dev-builder/actions/runs/23716940676 - The first failing build :https://github.com/ruby/ruby-dev-builder/actions/runs/23763490942 - The latest failing build : https://github.com/ruby/ruby-dev-builder/actions/runs/24686105004 ### Steps to reproduce ``` mkdir work cd work git clone https://github.com/ruby/ruby.git git clone https://github.com/ruby/ruby-dev-builder.git cd ruby ../ruby-dev-builder/asan_libs.rb \ --prefix=$HOME/.rubies/ruby-asan \ --cc=clang \ --cflags='-fsanitize=address -fno-omit-frame-pointer -ggdb3 -O3' \ --ldflags="-Wl,-rpath=$HOME/.rubies/ruby-asan/lib" \ --makeopts=-j4 export cppflags="-DENABLE_PATH_CHECK=0 -DRUBY_DEBUG=1 -DVM_CHECK_MODE=1 -DUSE_MN_THREADS=0" export optflags="-O3 -fno-omit-frame-pointer" export debugflags="-fsanitize=address -ggdb3" export CC=clang export cflags="-I$HOME/.rubies/ruby-asan/include" export LDFLAGS="-L$HOME/.rubies/ruby-asan/lib -Wl,-rpath=$HOME/.rubies/ruby-asan/lib" export RUBY_TEST_TIMEOUT_SCALE=5 ./autogen.sh ./configure --prefix=$HOME/.rubies/ruby-asan --enable-shared --disable-install-doc --enable-yjit make -j4 && make install make test-spec MSPECOPT="spec/ruby/library/objectspace/dump_all_spec.rb" 2>&1 | tee error.log ``` ### Expected behavior This spec should pass. ### Actual behavior It raises `ERROR: AddressSanitizer: attempting to call malloc_usable_size() for pointer which is not owned:` ---Files-------------------------------- error.log (1.69 MB) -- https://bugs.ruby-lang.org/

Issue #22009 has been updated by jhawthorn (John Hawthorn). Assignee set to jhawthorn (John Hawthorn) That makes sense that this crashes. We're allowing the GC to provide xmalloc and xfree, and in Ruby 4.1dev under debug that has additional padding. We should have an xmalloc equivalent of malloc_usable_size (at least in the one place we use it) ---------------------------------------- Bug #22009: ERROR: AddressSanitizer: attempting to call malloc_usable_size() for pointer which is not owned: with ASAN and DEBUG enabled build https://bugs.ruby-lang.org/issues/22009#change-117143 * Author: yahonda (Yasuo Honda) * Status: Open * Assignee: jhawthorn (John Hawthorn) * Backport: 3.3: UNKNOWN, 3.4: UNKNOWN, 4.0: UNKNOWN ---------------------------------------- ### Background I am using ruby-head built and deployed by https://github.com/ruby/ruby-dev-builder for my repository. https://github.com/rsim/oracle-enhanced/blob/master/.github/workflows/ruby_h... Recently, the `ruby-head` version has not been updated since `ruby 4.1.0dev (2026-03-29T05:57:51Z :detached: f9175a9e5f) +PRISM [aarch64-linux]`. According to the ruby-dev-builder log file: - The last successful build : https://github.com/ruby/ruby-dev-builder/actions/runs/23716940676 - The first failing build :https://github.com/ruby/ruby-dev-builder/actions/runs/23763490942 - The latest failing build : https://github.com/ruby/ruby-dev-builder/actions/runs/24686105004 ### Steps to reproduce ``` mkdir work cd work git clone https://github.com/ruby/ruby.git git clone https://github.com/ruby/ruby-dev-builder.git cd ruby ../ruby-dev-builder/asan_libs.rb \ --prefix=$HOME/.rubies/ruby-asan \ --cc=clang \ --cflags='-fsanitize=address -fno-omit-frame-pointer -ggdb3 -O3' \ --ldflags="-Wl,-rpath=$HOME/.rubies/ruby-asan/lib" \ --makeopts=-j4 export cppflags="-DENABLE_PATH_CHECK=0 -DRUBY_DEBUG=1 -DVM_CHECK_MODE=1 -DUSE_MN_THREADS=0" export optflags="-O3 -fno-omit-frame-pointer" export debugflags="-fsanitize=address -ggdb3" export CC=clang export cflags="-I$HOME/.rubies/ruby-asan/include" export LDFLAGS="-L$HOME/.rubies/ruby-asan/lib -Wl,-rpath=$HOME/.rubies/ruby-asan/lib" export RUBY_TEST_TIMEOUT_SCALE=5 ./autogen.sh ./configure --prefix=$HOME/.rubies/ruby-asan --enable-shared --disable-install-doc --enable-yjit make -j4 && make install make test-spec MSPECOPT="spec/ruby/library/objectspace/dump_all_spec.rb" 2>&1 | tee error.log ``` ### Expected behavior This spec should pass. ### Actual behavior It raises `ERROR: AddressSanitizer: attempting to call malloc_usable_size() for pointer which is not owned:` ---Files-------------------------------- error.log (1.69 MB) -- https://bugs.ruby-lang.org/