b9b73ef906
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
39 lines
1.4 KiB
C++
39 lines
1.4 KiB
C++
// Make sure the sanitize_address attribute is emitted when using both ASan and KASan.
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// Also document that __attribute__((no_sanitize_address)) doesn't disable KASan instrumentation.
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/// RUN: %clang_cc1 -triple i386-unknown-linux -emit-llvm -o - %s | FileCheck -check-prefix=CHECK-NOASAN %s
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/// RUN: %clang_cc1 -triple i386-unknown-linux -fsanitize=address -emit-llvm -o - %s | FileCheck -check-prefix=CHECK-ASAN %s
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/// RUN: %clang_cc1 -triple i386-unknown-linux -fsanitize=kernel-address -emit-llvm -o - %s | FileCheck -check-prefix=CHECK-KASAN %s
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int HasSanitizeAddress() {
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return 1;
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}
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// CHECK-NOASAN: {{Function Attrs: nounwind$}}
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// CHECK-ASAN: Function Attrs: nounwind sanitize_address
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// CHECK-KASAN: Function Attrs: nounwind sanitize_address
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__attribute__((no_sanitize("address")))
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int NoSanitizeQuoteAddress() {
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return 0;
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}
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// CHECK-NOASAN: {{Function Attrs: nounwind$}}
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// CHECK-ASAN: {{Function Attrs: nounwind$}}
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// CHECK-KASAN: {{Function Attrs: nounwind sanitize_address$}}
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__attribute__((no_sanitize_address))
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int NoSanitizeAddress() {
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return 0;
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}
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// CHECK-NOASAN: {{Function Attrs: nounwind$}}
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// CHECK-ASAN: {{Function Attrs: nounwind$}}
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// CHECK-KASAN: {{Function Attrs: nounwind sanitize_address$}}
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__attribute__((no_sanitize("kernel-address")))
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int NoSanitizeKernelAddress() {
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return 0;
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}
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// CHECK-NOASAN: {{Function Attrs: nounwind$}}
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// CHECK-ASAN: {{Function Attrs: nounwind sanitize_address$}}
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// CHECK-KASAN: {{Function Attrs: nounwind$}}
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