bjoernager/rust
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Auto merge of #99679 - repnop:kernel-address-sanitizer, r=cuviper

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Add `kernel-address` sanitizer support for freestanding targets

This PR adds support for KASan (kernel address sanitizer) instrumentation in freestanding targets. I included the minimal set of `x86_64-unknown-none`, `riscv64{imac, gc}-unknown-none-elf`, and `aarch64-unknown-none` but there's likely other targets it can be added to. (`linux_kernel_base.rs`?) KASan uses the address sanitizer attributes but has the `CompileKernel` parameter set to `true` in the pass creation.
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bors 2023-02-18 03:05:11 +00:00
commit fabfd1fd93
18 changed files with 142 additions and 12 deletions
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4
compiler/rustc_codegen_llvm/src/back/write.rs
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@ -442,6 +442,10 @@ pub(crate) unsafe fn llvm_optimize(
sanitize_thread: config.sanitizer.contains(SanitizerSet::THREAD),
sanitize_hwaddress: config.sanitizer.contains(SanitizerSet::HWADDRESS),
sanitize_hwaddress_recover: config.sanitizer_recover.contains(SanitizerSet::HWADDRESS),
sanitize_kernel_address: config.sanitizer.contains(SanitizerSet::KERNELADDRESS),
sanitize_kernel_address_recover: config
.sanitizer_recover
.contains(SanitizerSet::KERNELADDRESS),
})
} else {
None