[Driver][CFI] Allow CFI with minimal runtime #137103
Merged
+8
−18
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Created using spr 1.3.4 [skip ci]
Created using spr 1.3.4
llvmbot
added
clang
|
@llvm/pr-subscribers-llvm-ir @llvm/pr-subscribers-clang Author: Vitaly Buka (vitalybuka) ChangesIt was introduced with original "minimal runtime" The same commit contains Full diff: https://github.com/llvm/llvm-project/pull/137103.diff 3 Files Affected:
diff --git a/clang/lib/Driver/SanitizerArgs.cpp b/clang/lib/Driver/SanitizerArgs.cpp
index 94a036172d0b6..2edb200688418 100644
--- a/clang/lib/Driver/SanitizerArgs.cpp
+++ b/clang/lib/Driver/SanitizerArgs.cpp
@@ -849,12 +849,6 @@ SanitizerArgs::SanitizerArgs(const ToolChain &TC,
D.Diag(clang::diag::err_drv_argument_not_allowed_with)
<< "-fsanitize-minimal-runtime"
<< lastArgumentForMask(D, Args, IncompatibleMask);
-
- SanitizerMask NonTrappingCfi = Kinds & SanitizerKind::CFI & ~TrappingKinds;
- if (NonTrappingCfi && DiagnoseErrors)
- D.Diag(clang::diag::err_drv_argument_only_allowed_with)
- << "-fsanitize-minimal-runtime"
- << "-fsanitize-trap=cfi";
}
for (const auto *Arg : Args.filtered(
diff --git a/clang/test/Driver/fsanitize.c b/clang/test/Driver/fsanitize.c
index af00492314ff7..76de0a94ec591 100644
--- a/clang/test/Driver/fsanitize.c
+++ b/clang/test/Driver/fsanitize.c
@@ -961,19 +961,18 @@
// CHECK-CFI-ABORT-MINIMAL: "-fsanitize-trap=cfi-derived-cast,cfi-icall,cfi-mfcall,cfi-unrelated-cast,cfi-nvcall,cfi-vcall"
// CHECK-CFI-ABORT-MINIMAL: "-fsanitize-minimal-runtime"
-// RUN: not %clang --target=x86_64-linux-gnu -fsanitize=cfi -flto -fvisibility=hidden -fsanitize-minimal-runtime -fno-sanitize-trap=cfi -fsanitize-recover=cfi -resource-dir=%S/Inputs/resource_dir %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-CFI-NOTRAP-RECOVER-MINIMAL --
-// CHECK-CFI-NOTRAP-RECOVER-MINIMAL: '-fsanitize-minimal-runtime' only allowed with '-fsanitize-trap=cfi'
+// RUN: %clang --target=x86_64-linux-gnu -fsanitize=cfi -flto -fvisibility=hidden -fsanitize-minimal-runtime -fno-sanitize-trap=cfi -fsanitize-recover=cfi -resource-dir=%S/Inputs/resource_dir %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-CFI-NOTRAP-RECOVER-MINIMAL --
// CHECK-CFI-NOTRAP-RECOVER-MINIMAL: "-fsanitize=cfi-derived-cast,cfi-icall,cfi-mfcall,cfi-unrelated-cast,cfi-nvcall,cfi-vcall"
// CHECK-CFI-NOTRAP-RECOVER-MINIMAL: "-fsanitize-recover=cfi-derived-cast,cfi-icall,cfi-mfcall,cfi-unrelated-cast,cfi-nvcall,cfi-vcall"
// CHECK-CFI-NOTRAP-RECOVER-MINIMAL: "-fsanitize-minimal-runtime"
-// RUN: not %clang --target=x86_64-linux-gnu -fsanitize=cfi -flto -fvisibility=hidden -fsanitize-minimal-runtime -fno-sanitize-trap=cfi -fno-sanitize-recover=cfi -resource-dir=%S/Inputs/resource_dir %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-CFI-NOTRAP-ABORT-MINIMAL
-// CHECK-CFI-NOTRAP-ABORT-MINIMAL: '-fsanitize-minimal-runtime' only allowed with '-fsanitize-trap=cfi'
+// RUN: %clang --target=x86_64-linux-gnu -fsanitize=cfi -flto -fvisibility=hidden -fsanitize-minimal-runtime -fno-sanitize-trap=cfi -fno-sanitize-recover=cfi -resource-dir=%S/Inputs/resource_dir %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-CFI-NOTRAP-ABORT-MINIMAL
// CHECK-CFI-NOTRAP-ABORT-MINIMAL: "-fsanitize=cfi-derived-cast,cfi-icall,cfi-mfcall,cfi-unrelated-cast,cfi-nvcall,cfi-vcall"
// CHECK-CFI-NOTRAP-ABORT-MINIMAL: "-fsanitize-minimal-runtime"
-// RUN: not %clang --target=x86_64-linux-gnu -fsanitize=cfi -fno-sanitize-trap=cfi-icall -flto -fvisibility=hidden -fsanitize-minimal-runtime %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-CFI-NOTRAP-MINIMAL
-// CHECK-CFI-NOTRAP-MINIMAL: error: invalid argument '-fsanitize-minimal-runtime' only allowed with '-fsanitize-trap=cfi'
+// RUN: %clang --target=x86_64-linux-gnu -fsanitize=cfi -fno-sanitize-trap=cfi-icall -flto -fvisibility=hidden -fsanitize-minimal-runtime %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-CFI-NOTRAP-MINIMAL
+// CHECK-CFI-NOTRAP-MINIMAL: "-fsanitize=cfi-derived-cast,cfi-icall,cfi-mfcall,cfi-unrelated-cast,cfi-nvcall,cfi-vcall"
+// CHECK-CFI-NOTRAP-MINIMAL: "-fsanitize-trap=cfi-derived-cast,cfi-mfcall,cfi-unrelated-cast,cfi-nvcall,cfi-vcall"
// RUN: %clang --target=x86_64-linux-gnu -fsanitize=cfi -fno-sanitize-trap=cfi-icall -fno-sanitize=cfi-icall -flto -fvisibility=hidden -fsanitize-minimal-runtime -resource-dir=%S/Inputs/resource_dir %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-CFI-NOICALL-MINIMAL
// CHECK-CFI-NOICALL-MINIMAL: "-fsanitize=cfi-derived-cast,cfi-mfcall,cfi-unrelated-cast,cfi-nvcall,cfi-vcall"
diff --git a/clang/test/Driver/sanitizer-ld.c b/clang/test/Driver/sanitizer-ld.c
index a5a4fc2320bd2..befd322d027c9 100644
--- a/clang/test/Driver/sanitizer-ld.c
+++ b/clang/test/Driver/sanitizer-ld.c
@@ -920,7 +920,7 @@
// CHECK-CFI-MINRT-LINUX: "{{.*}}ld{{(.exe)?}}"
// CFI with diagnostics links the UBSan runtime.
-// RUN: not %clang -fsanitize=cfi -fno-sanitize-trap=cfi -fsanitize-recover=cfi \
+// RUN: %clang -fsanitize=cfi -fno-sanitize-trap=cfi -fsanitize-recover=cfi \
// RUN: -flto -fvisibility=hidden \
// RUN: -fsanitize-minimal-runtime \
// RUN: --target=x86_64-unknown-linux -fuse-ld=ld \
@@ -928,7 +928,6 @@
// RUN: --sysroot=%S/Inputs/basic_linux_tree \
// RUN: -### %s 2>&1 \
// RUN: | %{filecheck} --check-prefix=CHECK-CFI-MINRT-DIAG-LINUX
-// CHECK-CFI-MINRT-DIAG-LINUX: '-fsanitize-minimal-runtime' only allowed with '-fsanitize-trap=cfi'
// CHECK-CFI-MINRT-DIAG-LINUX: "{{.*}}ld{{(.exe)?}}"
// CHECK-CFI-MINRT-DIAG-LINUX: "--whole-archive" "{{[^"]*}}libclang_rt.ubsan_minimal.a" "--no-whole-archive"
@@ -946,7 +945,7 @@
// CHECK-CFI-MINRT-CROSS-DSO-LINUX: -export-dynamic
// Cross-DSO CFI with diagnostics links just the CFI runtime.
-// RUN: not %clang -fsanitize=cfi -fsanitize-cfi-cross-dso \
+// RUN: %clang -fsanitize=cfi -fsanitize-cfi-cross-dso \
// RUN: -flto -fvisibility=hidden \
// RUN: -fsanitize-minimal-runtime \
// RUN: -fno-sanitize-trap=cfi -fsanitize-recover=cfi \
@@ -955,7 +954,6 @@
// RUN: --sysroot=%S/Inputs/basic_linux_tree \
// RUN: -### %s 2>&1 \
// RUN: | %{filecheck} --check-prefix=CHECK-CFI-MINRT-CROSS-DSO-DIAG-LINUX
-// CHECK-CFI-MINRT-CROSS-DSO-DIAG-LINUX: '-fsanitize-minimal-runtime' only allowed with '-fsanitize-trap=cfi'
// CHECK-CFI-MINRT-CROSS-DSO-DIAG-LINUX: "{{.*}}ld{{(.exe)?}}"
// CHECK-CFI-MINRT-CROSS-DSO-DIAG-LINUX: "--whole-archive" "{{[^"]*}}libclang_rt.cfi_diag.a" "--no-whole-archive"
// CHECK-CFI-MINRT-CROSS-DSO-DIAG-LINUX: -export-dynamic
@@ -972,7 +970,7 @@
// CHECK-CFI-MINRT-CROSS-DSO-ANDROID: "{{.*}}ld{{(.exe)?}}"
// Cross-DSO CFI with diagnostics on Android links just the UBSAN runtime.
-// RUN: not %clang -fsanitize=cfi -fsanitize-cfi-cross-dso \
+// RUN: %clang -fsanitize=cfi -fsanitize-cfi-cross-dso \
// RUN: -flto -fvisibility=hidden \
// RUN: -fsanitize-minimal-runtime \
// RUN: -fno-sanitize-trap=cfi -fsanitize-recover=cfi \
@@ -981,7 +979,6 @@
// RUN: --sysroot=%S/Inputs/basic_android_tree \
// RUN: -### %s 2>&1 \
// RUN: | %{filecheck} --check-prefix=CHECK-CFI-MINRT-CROSS-DSO-DIAG-ANDROID
-// CHECK-CFI-MINRT-CROSS-DSO-DIAG-ANDROID: '-fsanitize-minimal-runtime' only allowed with '-fsanitize-trap=cfi'
// CHECK-CFI-MINRT-CROSS-DSO-DIAG-ANDROID: "{{.*}}ld{{(.exe)?}}"
// CHECK-CFI-MINRT-CROSS-DSO-DIAG-ANDROID: "{{[^"]*}}libclang_rt.ubsan_minimal.so"
// CHECK-CFI-MINRT-CROSS-DSO-DIAG-ANDROID: "--export-dynamic-symbol=__cfi_check"
|
|
TODO: In a separate PRs I will add Codegen and runtime tests. |
Created using spr 1.3.4 [skip ci]
vitalybuka
changed the base branch from
users/vitalybuka/spr/main.drivercfi-allow-cfi-with-minimal-runtime
to
main
fmayer
approved these changes
Apr 24, 2025
…h-minimal-runtime
vitalybuka
requested review from
aaupov,
maksfb,
rafaelauler,
ayermolo,
yota9,
lanza and
bcardosolopes
as code owners
llvmbot
added
cmake
llvmbot
added
backend:SPIR-V
llvm:ir
ClangIR
vitalybuka
removed request for
aaupov,
bcardosolopes,
maksfb,
rafaelauler,
lanza,
yota9 and
ayermolo
vitalybuka
removed
cmake
vitalybuka
deleted the
users/vitalybuka/spr/drivercfi-allow-cfi-with-minimal-runtime
branch
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
It was introduced with original "minimal runtime"
patch without explanation:
https://reviews.llvm.org/D36810#:~:text=if%20(-,NonTrappingCfi,-)
Note, the same commit contains
cfi_check_failhandler,which can not be reached with
-fsanitize-trap=cfi.This patch makes CFI min runtime behavior consistent with UBSAN:
-fsanitize-trap=ignores-fsanitize-minimal-runtime,-fno-sanitize-trap=with-fsanitize-minimal-runtimecompiles and linkminimal runtime.