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| author | Alexander Potapenko <glider@google.com> | 2015-06-19 12:19:07 +0000 |
|---|---|---|
| committer | Alexander Potapenko <glider@google.com> | 2015-06-19 12:19:07 +0000 |
| commit | b9b73ef9067371fbe78c34e0f3b23d014413a2f8 (patch) | |
| tree | 879cacb4b816acf453a145cdec863e6150070ece /clang/lib/CodeGen/CodeGenModule.cpp | |
| parent | 284a750c5ff95a29cd8cc9130d3eb7ec6d25e352 (diff) | |
| download | bcm5719-llvm-b9b73ef9067371fbe78c34e0f3b23d014413a2f8.tar.gz bcm5719-llvm-b9b73ef9067371fbe78c34e0f3b23d014413a2f8.zip | |
[ASan] Initial support for Kernel AddressSanitizer
This patch adds initial support for the -fsanitize=kernel-address flag to Clang.
Right now it's quite restricted: only out-of-line instrumentation is supported, globals are not instrumented, some GCC kasan flags are not supported.
Using this patch I am able to build and boot the KASan tree with LLVMLinux patches from github.com/ramosian-glider/kasan/tree/kasan_llvmlinux.
To disable KASan instrumentation for a certain function attribute((no_sanitize("kernel-address"))) can be used.
llvm-svn: 240131
Diffstat (limited to 'clang/lib/CodeGen/CodeGenModule.cpp')
| -rw-r--r-- | clang/lib/CodeGen/CodeGenModule.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp index c0cbe98484f..2dd5414795e 100644 --- a/clang/lib/CodeGen/CodeGenModule.cpp +++ b/clang/lib/CodeGen/CodeGenModule.cpp @@ -1218,8 +1218,9 @@ bool CodeGenModule::isInSanitizerBlacklist(llvm::Function *Fn, bool CodeGenModule::isInSanitizerBlacklist(llvm::GlobalVariable *GV, SourceLocation Loc, QualType Ty, StringRef Category) const { - // For now globals can be blacklisted only in ASan. - if (!LangOpts.Sanitize.has(SanitizerKind::Address)) + // For now globals can be blacklisted only in ASan and KASan. + if (!LangOpts.Sanitize.hasOneOf( + SanitizerKind::Address | SanitizerKind::KernelAddress)) return false; const auto &SanitizerBL = getContext().getSanitizerBlacklist(); if (SanitizerBL.isBlacklistedGlobal(GV->getName(), Category)) |
