[ruby-core:117334] [Ruby master Bug#20099] Ruby 3.3.0 segfaults on s390x musl libc (Alpine Linux) when built with -O3 (default optflags)

Issue #20099 has been updated by hsbt (Hiroshi SHIBATA). Status changed from Open to Closed Unfortunately, there is no active maintainer for musl or alpine platform. I tagged them to [musl](https://bugs.ruby-lang.org/projects/ruby-master/issues?fields%5B%5D=i…%5B%5D=musl). We welcome patch for them. ---------------------------------------- Bug #20099: Ruby 3.3.0 segfaults on s390x musl libc (Alpine Linux) when built with -O3 (default optflags) https://bugs.ruby-lang.org/issues/20099#change-107488 * Author: jirutka (Jakub Jirutka) * Status: Closed * ruby -v: ruby 3.3.0 (2023-12-25 revision 5124f9ac75) [s390x-linux-musl] * Backport: 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN, 3.3: UNKNOWN ---------------------------------------- It does not segfault when I override `optflags` to `-O2` (default is `-O3`). ``` Configuration summary for ruby version 3.3.0 * Installation prefix: /usr * exec prefix: ${prefix} * arch: s390x-linux-musl * site arch: ${arch} * RUBY_BASE_NAME: ruby * enable shared: yes * ruby lib prefix: ${libdir}/${RUBY_BASE_NAME} * site libraries path: ${rubylibprefix}/${sitearch} * vendor path: ${rubylibprefix}/vendor_ruby * target OS: linux-musl * compiler: gcc * with thread: pthread * with coroutine: ucontext * enable shared libs: yes * dynamic library ext: so * CFLAGS: ${optflags} ${debugflags} ${warnflags} * LDFLAGS: -L. -Wl,--as-needed,-O1,--sort-common \ -fstack-protector-strong -rdynamic \ -Wl,-export-dynamic -Wl,--no-as-needed * DLDFLAGS: -Wl,--as-needed,-O1,--sort-common \ -Wl,--compress-debug-sections=zlib * optflags: -O3 -fno-fast-math * debugflags: -ggdb3 * warnflags: -Wall -Wextra -Wdeprecated-declarations \ -Wdiv-by-zero -Wduplicated-cond \ -Wimplicit-function-declaration -Wimplicit-int \ -Wpointer-arith -Wwrite-strings \ -Wold-style-definition -Wimplicit-fallthrough=0 \ -Wmissing-noreturn -Wno-cast-function-type \ -Wno-constant-logical-operand -Wno-long-long \ -Wno-missing-field-initializers \ -Wno-overlength-strings \ -Wno-packed-bitfield-compat \ -Wno-parentheses-equality -Wno-self-assign \ -Wno-tautological-compare -Wno-unused-parameter \ -Wno-unused-value -Wsuggest-attribute=format \ -Wsuggest-attribute=noreturn -Wunused-variable \ -Wmisleading-indentation -Wundef * strip command: strip -S -x * install doc: rdoc * YJIT support: no * RJIT support: no * man page type: man * search path: /usr/lib/site_ruby/$(ruby_ver)/s390x-linux --- BASERUBY = ./tool/missing-baseruby.bat CC = gcc LD = ld LDSHARED = gcc -shared CFLAGS = -O2 -fstack-clash-protection -Wformat -Werror=format-security -g -fno-omit-frame-pointer -fno-strict-aliasing -fPIC XCFLAGS = -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fstack-protector-strong -fno-strict-overflow -fvisibility=hidden -fexcess-precision=standard -DRUBY_EXPORT -I. -I.ext/include/s390x-linux-musl -I./include -I. -I./prism -I./enc/unicode/15.0.0 CPPFLAGS = -fno-omit-frame-pointer -fno-strict-aliasing DLDFLAGS = -Wl,--as-needed,-O1,--sort-common -Wl,--compress-debug-sections=zlib -Wl,-soname,libruby.so.3.3 -fstack-protector-strong SOLIBS = -lz -lrt -lrt -lgmp -ldl -lcrypt -lm -lpthread -lucontext LANG = LC_ALL = LC_CTYPE = MFLAGS = -j8 --jobserver-auth=fifo:/tmp/GMfifo7323 RUSTC = no YJIT_RUSTC_ARGS = --crate-name=yjit --crate-type=staticlib --edition=2021 -g -C lto=thin -C opt-level=3 -C overflow-checks=on '--out-dir=/builds/alpine/aports/main/ruby/src/ruby-3.3.0/yjit/target/release/' ./yjit/src/lib.rs ``` ``` 2023-12-26 20:45:17 +0000 Driver is ruby 3.3.0 (2023-12-25 revision 5124f9ac75) [s390x-linux-musl] Target is ruby 3.3.0 (2023-12-25 revision 5124f9ac75) [s390x-linux-musl] .............................................................................. .............................................................................. .............................................................................. .............................................................................. ................................................................EA core file is found. Saving it at: "/tmp/bootstraptest-core.2023-12-26T20:45:18Z" ["gdb", "/builds/alpine/aports/main/ruby/src/ruby-3.3.0/ruby -I/builds/alpine/aports/main/ruby/src/ruby-3.3.0/lib --disable-gems", "-c", "/tmp/bootstraptest-core.2023-12-26T20:45:18Z", "-ex", "bt", "-batch"] ...EA core file is found. Saving it at: "/tmp/bootstraptest-core.2023-12-26T20:45:19Z" ["gdb", "/builds/alpine/aports/main/ruby/src/ruby-3.3.0/ruby -I/builds/alpine/aports/main/ruby/src/ruby-3.3.0/lib --disable-gems", "-c", "/tmp/bootstraptest-core.2023-12-26T20:45:19Z", "-ex", "bt", "-batch"] .....Fstderr output is not empty [BUG] Segmentation fault at 0x000007fece67a000 ruby 3.3.0 (2023-12-25 revision 5124f9ac75) [s390x-linux-musl] -- Control frame information ----------------------------------------------- c:0001 p:---- s:0003 e:000002 DUMMY [FINISH] -- Threading information --------------------------------------------------- Total ractor count: 2 Ruby thread count for this ractor: 1 -- Other runtime information ----------------------------------------------- * Loaded script: bootstraptest.test_ractor.rb_244_1238.rb * Loaded features: 0 enumerator.so 1 thread.rb 2 fiber.so 3 rational.so 4 complex.so 5 ruby2_keywords.rb 6 /builds/alpine/aports/main/ruby/src/ruby-3.3.0/.ext/s390x-linux-musl/enc/encdb.so 7 /builds/alpine/aports/main/ruby/src/ruby-3.3.0/.ext/s390x-linux-musl/enc/trans/transdb.so * Process memory map: 2aa25e00000-2aa25e01000 r-xp 00000000 fe:00 2520910 /builds/alpine/aports/main/ruby/src/ruby-3.3.0/ruby 2aa25e01000-2aa25e02000 r--p 00000000 fe:00 2520910 /builds/alpine/aports/main/ruby/src/ruby-3.3.0/ruby 2aa25e02000-2aa25e03000 rw-p 00001000 fe:00 2520910 /builds/alpine/aports/main/ruby/src/ruby-3.3.0/ruby 2aa2765d000-2aa2765e000 ---p 00000000 00:00 0 [heap] 2aa2765e000-2aa27664000 rw-p 00000000 00:00 0 [heap] 3ff572a8000-3ff572aa000 ---p 00000000 00:00 0 3ff572aa000-3ff572d0000 rw-p 00000000 00:00 0 3ff572d0000-3ff572d2000 ---p 00000000 00:00 0 3ff572d2000-3ff573f9000 rw-p 00000000 00:00 0 3ff573f9000-3ff573fa000 ---p 00000000 00:00 0 3ff573fa000-3ff5751a000 rw-p 00000000 00:00 0 3ff5751a000-3ff5751b000 ---p 00000000 00:00 0 3ff5751b000-3ff77300000 rw-p 00000000 00:00 0 3ff77300000-3ff77302000 r-xp 00000000 fe:00 2520334 /builds/alpine/aports/main/ruby/src/ruby-3.3.0/.ext/s390x-linux-musl/enc/trans/transdb.so 3ff77302000-3ff77303000 r--p 00002000 fe:00 2520334 /builds/alpine/aports/main/ruby/src/ruby-3.3.0/.ext/s390x-linux-musl/enc/trans/transdb.so 3ff77303000-3ff77304000 rw-p 00003000 fe:00 2520334 /builds/alpine/aports/main/ruby/src/ruby-3.3.0/.ext/s390x-linux-musl/enc/trans/transdb.so 3ff77307000-3ff77309000 rw-p 00000000 00:00 0 3ff7730b000-3ff7730e000 rw-p 00000000 00:00 0 3ff77310000-3ff77330000 rw-p 00000000 00:00 0 3ff77332000-3ff77337000 rw-p 00000000 00:00 0 3ff77339000-3ff7733a000 rw-p 00000000 00:00 0 3ff7733b000-3ff7733e000 rw-p 00000000 00:00 0 3ff77340000-3ff77380000 rw-p 00000000 00:00 0 3ff77380000-3ff77382000 r-xp 00000000 fe:00 2520245 /builds/alpine/aports/main/ruby/src/ruby-3.3.0/.ext/s390x-linux-musl/enc/encdb.so 3ff77382000-3ff77383000 r--p 00001000 fe:00 2520245 /builds/alpine/aports/main/ruby/src/ruby-3.3.0/.ext/s390x-linux-musl/enc/encdb.so 3ff77383000-3ff77384000 rw-p 00002000 fe:00 2520245 /builds/alpine/aports/main/ruby/src/ruby-3.3.0/.ext/s390x-linux-musl/enc/encdb.so 3ff77384000-3ff7739c000 rw-p 00000000 00:00 0 3ff7739c000-3ff7739d000 ---p 00000000 00:00 0 3ff7739d000-3ff773de000 rw-p 00000000 00:00 0 3ff773de000-3ff773df000 ---p 00000000 00:00 0 3ff773df000-3ff77420000 rw-p 00000000 00:00 0 3ff77420000-3ff77421000 ---p 00000000 00:00 0 3ff77421000-3ff77462000 rw-p 00000000 00:00 0 3ff77462000-3ff77463000 ---p 00000000 00:00 0 3ff77463000-3ff774a4000 rw-p 00000000 00:00 0 3ff774a4000-3ff774a5000 ---p 00000000 00:00 0 3ff774a5000-3ff774e6000 rw-p 00000000 00:00 0 3ff774e6000-3ff774e7000 ---p 00000000 00:00 0 3ff774e7000-3ff77528000 rw-p 00000000 00:00 0 3ff77528000-3ff77529000 ---p 00000000 00:00 0 3ff77529000-3ff7756a000 rw-p 00000000 00:00 0 3ff7756a000-3ff7756b000 ---p 00000000 00:00 0 3ff7756b000-3ff775ac000 rw-p 00000000 00:00 0 3ff775ac000-3ff775ad000 ---p 00000000 00:00 0 3ff775ad000-3ff775ee000 rw-p 00000000 00:00 0 3ff775ee000-3ff775ef000 ---p 00000000 00:00 0 3ff775ef000-3ff77630000 rw-p 00000000 00:00 0 3ff77630000-3ff77631000 ---p 00000000 00:00 0 3ff77631000-3ff77672000 rw-p 00000000 00:00 0 3ff77672000-3ff77673000 ---p 00000000 00:00 0 3ff77673000-3ff776b4000 rw-p 00000000 00:00 0 3ff776b4000-3ff776b5000 ---p 00000000 00:00 0 3ff776b5000-3ff776f6000 rw-p 00000000 00:00 0 3ff776f6000-3ff776f7000 ---p 00000000 00:00 0 3ff776f7000-3ff77738000 rw-p 00000000 00:00 0 3ff77738000-3ff77739000 ---p 00000000 00:00 0 3ff77739000-3ff7777a000 rw-p 00000000 00:00 0 3ff7777a000-3ff7777b000 ---p 00000000 00:00 0 3ff7777b000-3ff777bc000 rw-p 00000000 00:00 0 3ff777bc000-3ff777bd000 ---p 00000000 00:00 0 3ff777bd000-3ff777fe000 rw-p 00000000 00:00 0 3ff777fe000-3ff777ff000 ---p 00000000 00:00 0 3ff777ff000-3ff77840000 rw-p 00000000 00:00 0 3ff77840000-3ff77841000 ---p 00000000 00:00 0 3ff77841000-3ff77882000 rw-p 00000000 00:00 0 3ff77882000-3ff77883000 ---p 00000000 00:00 0 3ff77883000-3ff778c4000 rw-p 00000000 00:00 0 3ff778c4000-3ff778c5000 ---p 00000000 00:00 0 3ff778c5000-3ff77906000 rw-p 00000000 00:00 0 3ff77906000-3ff77907000 ---p 00000000 00:00 0 3ff77907000-3ff77948000 rw-p 00000000 00:00 0 3ff77948000-3ff77949000 ---p 00000000 00:00 0 3ff77949000-3ff7798a000 rw-p 00000000 00:00 0 3ff7798a000-3ff7798b000 ---p 00000000 00:00 0 3ff7798b000-3ff779cc000 rw-p 00000000 00:00 0 3ff779cc000-3ff779cd000 ---p 00000000 00:00 0 3ff779cd000-3ff77a0e000 rw-p 00000000 00:00 0 3ff77a0e000-3ff77a0f000 ---p 00000000 00:00 0 3ff77a0f000-3ff77a50000 rw-p 00000000 00:00 0 3ff77a50000-3ff77a51000 ---p 00000000 00:00 0 3ff77a51000-3ff77a92000 rw-p 00000000 00:00 0 3ff77a92000-3ff77a93000 ---p 00000000 00:00 0 3ff77a93000-3ff77ad4000 rw-p 00000000 00:00 0 3ff77ad4000-3ff77ad5000 ---p 00000000 00:00 0 3ff77ad5000-3ff77b16000 rw-p 00000000 00:00 0 3ff77b16000-3ff77b17000 ---p 00000000 00:00 0 3ff77b17000-3ff77b58000 rw-p 00000000 00:00 0 3ff77b58000-3ff77b59000 ---p 00000000 00:00 0 3ff77b59000-3ff77b9a000 rw-p 00000000 00:00 0 3ff77b9a000-3ff77b9b000 ---p 00000000 00:00 0 3ff77b9b000-3ff77bdc000 rw-p 00000000 00:00 0 3ff77bdc000-3ff77bde000 ---p 00000000 00:00 0 3ff77bde000-3ff91100000 rw-p 00000000 00:00 0 3ff91100000-3ff91101000 r-xp 00000000 fe:00 2758431 /lib/libucontext.so.1 3ff91101000-3ff91102000 r--p 00000000 fe:00 2758431 /lib/libucontext.so.1 3ff91102000-3ff91103000 rw-p 00001000 fe:00 2758431 /lib/libucontext.so.1 3ff91103000-3ff9114b000 rw-p 00000000 00:00 0 3ff9114f000-3ff91153000 rw-p 00000000 00:00 0 3ff91155000-3ff91180000 rw-p 00000000 00:00 0 3ff91180000-3ff911fd000 r-xp 00000000 fe:00 2755903 /usr/lib/libgmp.so.10.5.0 3ff911fd000-3ff911ff000 r--p 0007c000 fe:00 2755903 /usr/lib/libgmp.so.10.5.0 3ff911ff000-3ff91200000 rw-p 0007e000 fe:00 2755903 /usr/lib/libgmp.so.10.5.0 3ff91200000-3ff91219000 r-xp 00000000 fe:00 2754145 /lib/libz.so.1.3 3ff91219000-3ff9121a000 r--p 00018000 fe:00 2754145 /lib/libz.so.1.3 3ff9121a000-3ff9121b000 rw-p 00019000 fe:00 2754145 /lib/libz.so.1.3 3ff9121b000-3ff91280000 rw-p 00000000 00:00 0 3ff91280000-3ff91700000 r-xp 00000000 fe:00 2519847 /builds/alpine/aports/main/ruby/src/ruby-3.3.0/libruby.so.3.3.0 3ff91700000-3ff9170c000 r--p 00480000 fe:00 2519847 /builds/alpine/aports/main/ruby/src/ruby-3.3.0/libruby.so.3.3.0 3ff9170c000-3ff9170d000 rw-p 0048c000 fe:00 2519847 /builds/alpine/aports/main/ruby/src/ruby-3.3.0/libruby.so.3.3.0 3ff9170d000-3ff9171f000 rw-p 00000000 00:00 0 3ff9171f000-3ff91780000 rw-p 00000000 00:00 0 3ff91780000-3ff91830000 r-xp 00000000 fe:00 2758095 /lib/ld-musl-s390x.so.1 3ff91830000-3ff91831000 r--p 000b0000 fe:00 2758095 /lib/ld-musl-s390x.so.1 3ff91831000-3ff91832000 rw-p 000b1000 fe:00 2758095 /lib/ld-musl-s390x.so.1 3ff91832000-3ff91835000 rw-p 00000000 00:00 0 3ff91835000-3ff9187c000 rw-p 00000000 00:00 0 3ff9187c000-3ff9187e000 r--p 00000000 00:00 0 [vvar] 3ff9187e000-3ff91880000 r-xp 00000000 00:00 0 [vdso] 3ffe2381000-3ffe2b80000 rw-p 00000000 00:00 0 [stack] ``` …and many more tests fail like this. Build script: [APKBUILD](https://gitlab.alpinelinux.org/alpine/aports/-/blob/8dbcda97e3e55… **Environment:** - Alpine Linux Edge - gcc 13.2.1_git20231014 (with many [downstream patches](https://gitlab.alpinelinux.org/alpine/aports/-/tree/master/main/gc…) ---Files-------------------------------- ruby-3.3.0-s390x.log (281 KB) -- https://bugs.ruby-lang.org/