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fix(deps): akarin 1.5.0 — 1.4.1 segfaulted every job under SELinux (#101) - #110
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The 1.4.1 Linux wheel allocated JIT code with new[] and mprotect()ed it executable. A page-sized buffer lands on the brk heap, where SELinux denies PROT_EXEC (execheap is off by default on Fedora/RHEL); the result was only ASSERTed, so a release build jumped into non-executable memory and every job died with SIGSEGV on the first akarin.Expr frame. Upstream fixed it in 1.5.0 by building with the anonymous-mmap allocator. The pin moves on all three platforms so output stays identical per OS. No hosted runner enforces SELinux, so download-deps-linux.sh now fails if libakarin.so lacks the mmap allocator's mapping name. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014GLXdGLfPwgYjW1AkonGqN
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_014GLXdGLfPwgYjW1AkonGqN
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Fixes #101.
Cause
Every job crashed in
vspipe-binwithSIGSEGVon Fedora from app 0.9.12, the first release on deps 1.8.0, where akarin was added. The reporter'sprobe-plugin-compatrun passed 22 plugins and crashed onlylibakarin.so.The akarin 1.4.1 Linux wheel allocates JIT code with
new[]and thenmprotects it executable. A page-sized buffer comes off thebrkheap, where SELinux deniesPROT_EXEC(execheap, off by default on Fedora/RHEL). The result is onlyASSERTed, so the release build jumps into non-executable memory. That matches the report's single frame at0x55aa…with no module. Upstream: akarin #38, fixed in 1.5.0 by building with the anonymous-mmapallocator. macOS and Windows never took the heap path.Changes
download-deps-*scripts (wheel layouts are unchanged).download-deps-linux.shfails the build iflibakarin.solacks theakarin_jitmapping name. No hosted runner enforces SELinux, so CI cannot see a regression any other way.NOTICES.txt: statically linked LLVM is now 22.1.8.docs/ENGINEERING_NOTES.md; version-history row inCLAUDE.md.Verification
akarin_expr_parity_test.dartpasses against 1.5.0 on macos-arm64 (local deps clone with the new dylib swapped in).akarin_jit; 1.4.1 does not.Deps
Needs deps 1.12.0. A follow-up commit on this branch points
deps-version.jsonat it once the bundles are built.🤖 Generated with Claude Code
https://claude.ai/code/session_014GLXdGLfPwgYjW1AkonGqN