[Driver] Enable ASan on Solaris/SPARC#107403
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Once PR#107223 lands, ASan can be enabled on Solaris/SPARC. This patch does just that. As on Solaris/x86, the dynamic ASan runtime lib needs to be linked with `-z now` to avoid an `AsanInitInternal` cycle. Tested on `sparcv9-sun-solaris2.11` and `sparc64-unknown-linux-gnu`. This is not yet ready to be committed, though: even with the corresponding `compiler-rt` patch, 36 tests still `FAIL`. For Linux/sparc64, nothing needs to be done since `clang` enables ASan by default, irrespective of target. On top of that, test results are way worse, with quite a number of tests hanging completely.
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@llvm/pr-subscribers-clang-driver @llvm/pr-subscribers-clang Author: Rainer Orth (rorth) ChangesOnce PR #107223 lands, ASan can be enabled on Solaris/SPARC. This patch does just that. As on Solaris/x86, the dynamic ASan runtime lib needs to be linked with Tested on This is not yet ready to be committed, though: even with the corresponding For Linux/sparc64, nothing needs to be done since Full diff: https://github.com/llvm/llvm-project/pull/107403.diff 1 Files Affected:
diff --git a/clang/lib/Driver/ToolChains/Solaris.cpp b/clang/lib/Driver/ToolChains/Solaris.cpp
index e82ed2ca79ffd6..8d4ab40ce9f1de 100644
--- a/clang/lib/Driver/ToolChains/Solaris.cpp
+++ b/clang/lib/Driver/ToolChains/Solaris.cpp
@@ -265,8 +265,7 @@ void solaris::Linker::ConstructJob(Compilation &C, const JobAction &JA,
}
}
// Avoid AsanInitInternal cycle, Issue #64126.
- if (ToolChain.getTriple().isX86() && SA.needsSharedRt() &&
- SA.needsAsanRt()) {
+ if (SA.needsSharedRt() && SA.needsAsanRt()) {
CmdArgs.push_back("-z");
CmdArgs.push_back("now");
}
@@ -333,10 +332,11 @@ Solaris::Solaris(const Driver &D, const llvm::Triple &Triple,
}
SanitizerMask Solaris::getSupportedSanitizers() const {
+ const bool IsSparc = getTriple().getArch() == llvm::Triple::sparc;
const bool IsX86 = getTriple().getArch() == llvm::Triple::x86;
SanitizerMask Res = ToolChain::getSupportedSanitizers();
- // FIXME: Omit X86_64 until 64-bit support is figured out.
- if (IsX86) {
+ // FIXME: Omit SparcV9 and X86_64 until 64-bit support is figured out.
+ if (IsSparc || IsX86) {
Res |= SanitizerKind::Address;
Res |= SanitizerKind::PointerCompare;
Res |= SanitizerKind::PointerSubtract;
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rorth
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to rorth/llvm-project
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Sep 5, 2024
With PR llvm#107223 and PR llvm#107403, ASan testing can be enabled on SPARC. This patch does so, 32-bit only on Solaris (there is no 64-bit support even in GCC), and both 32 and 64-bit on Linux (although GCC only support 32-bit here). Apart from the obvious CMake changes, this patch includes a couple of testcase adjustments necessary for SPARC: - In `asan_oob_test.cpp`, the `OOB_int` subtest needs to be disabled: it performs unaligned accesses that cannot work on a strict-alignment target like SPARC. - `asan_test.cpp` needs to disable subtests that depend on support for `__builtin_setjmp` and `__builtin_longjmp`. - `zero_page_pc.cpp` reports `0x5` as the faulting address on access to `0x4`. I don't really know why, but it's consistent between Solaris and Linux. Tested on `sparcv9-sun-solaris2.11` and `sparc64-unknown-linux-gnu`. Solaris results are not too bad (36 `FAIL`s) while the Linux ones are quite bad, in particular because quite a number of tests just hang. For those reasons, I'm just posting the patch for reference in case someone else wants to try this on Linux.
This was referenced Sep 5, 2024
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Author
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Ping? ASan results on Solaris/sparcv9 are now one failure away from clean with current PR #107223. |
brad0
approved these changes
Sep 25, 2024
Collaborator
|
Curios, why Asan when there is Sparc ADI? |
vitalybuka
approved these changes
Sep 25, 2024
Collaborator
|
Also if there is a feature similar to ARM TBI, hwasan is a better option. |
MaskRay
approved these changes
Sep 25, 2024
Collaborator
Author
Various reasons:
|
rorth
added a commit
that referenced
this pull request
Nov 4, 2024
With PR #107223 and PR #107403, ASan testing can be enabled on SPARC. This patch does so, 32-bit only on both Solaris and Linux. There is no 64-bit support even in GCC. Apart from the obvious CMake changes, this patch includes a couple of testcase adjustments necessary for SPARC: - In `asan_oob_test.cpp`, the `OOB_int` subtest needs to be disabled: it performs unaligned accesses that cannot work on a strict-alignment target like SPARC. - `asan_test.cpp` needs to disable subtests that depend on support for `__builtin_setjmp` and `__builtin_longjmp`. - `zero_page_pc.cpp` reports `0x5` as the faulting address on access to `0x4`. I don't really know why, but it's consistent between Solaris and Linux. Tested on `sparcv9-sun-solaris2.11` and `sparc64-unknown-linux-gnu`.
PhilippRados
pushed a commit
to PhilippRados/llvm-project
that referenced
this pull request
Nov 6, 2024
With PR llvm#107223 and PR llvm#107403, ASan testing can be enabled on SPARC. This patch does so, 32-bit only on both Solaris and Linux. There is no 64-bit support even in GCC. Apart from the obvious CMake changes, this patch includes a couple of testcase adjustments necessary for SPARC: - In `asan_oob_test.cpp`, the `OOB_int` subtest needs to be disabled: it performs unaligned accesses that cannot work on a strict-alignment target like SPARC. - `asan_test.cpp` needs to disable subtests that depend on support for `__builtin_setjmp` and `__builtin_longjmp`. - `zero_page_pc.cpp` reports `0x5` as the faulting address on access to `0x4`. I don't really know why, but it's consistent between Solaris and Linux. Tested on `sparcv9-sun-solaris2.11` and `sparc64-unknown-linux-gnu`.
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Once PR #107223 lands, ASan can be enabled on Solaris/SPARC. This patch does just that. As on Solaris/x86, the dynamic ASan runtime lib needs to be linked with
-z nowto avoid anAsanInitInternalcycle.Tested on
sparcv9-sun-solaris2.11andsparc64-unknown-linux-gnu.