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CFI: asan.module_ctor is missing a type hash #1742

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CFI: asan.module_ctor is missing a type hash#1742
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[BUG] llvm (main)A bug in an unreleased version of LLVM (this label is appropriate for regressions)[FEATURE] CFIRelated to building the kernel with Clang Control Flow Integrity[FIXED][LINUX] 6.2This bug was fixed in Linux 6.2[FIXED][LLVM] mainThis bug was only present and fixed in an unreleased version of LLVM

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@samitolvanen
samitolvanen
opened on Oct 19, 2022

From Mark Rutland:

Looks like CFI && KASAN is borked on both arm64 and x86; the implicitly-generated asan.module_ctor functions aren't given a type hash by the compiler, so when those get invoked by do_ctors() the calls fail

cc @kees @nickdesaulniers @nathanchance @lvwr

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    [BUG] llvm (main)A bug in an unreleased version of LLVM (this label is appropriate for regressions)[FEATURE] CFIRelated to building the kernel with Clang Control Flow Integrity[FIXED][LINUX] 6.2This bug was fixed in Linux 6.2[FIXED][LLVM] mainThis bug was only present and fixed in an unreleased version of LLVM

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