[all-commits] [llvm/llvm-project] 63f4d2: [ELF] Fix data race when handleTlsIe adds a RELATI...

[Fangrui Song via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 63f4d28adf0af9f275f6c09450d5a48d451b59b1
      https://github.com/llvm/llvm-project/commit/63f4d28adf0af9f275f6c09450d5a48d451b59b1
  Author: Fangrui Song <i at maskray.me>
  Date:   2026-07-11 (Sat, 11 Jul 2026)

  Changed paths:
    M lld/ELF/RelocScan.h
    M lld/test/ELF/i386-tls-ie-shared.s

  Log Message:
  -----------
  [ELF] Fix data race when handleTlsIe adds a RELATIVE relocation (#208956)

The ieExpr == R_GOT PIC case (e.g. R_386_TLS_IE in -shared links) calls
the unsynchronized addRelativeReloc from concurrent scanSectionImpl
tasks, racing on relaDyn->relativeRelocs. Use the sharded variant like
processAux. Split i386-tls-ie-shared.s into two input files so that a
ThreadSanitizer build detects the race.



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