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update
Enna1 added a comment.
Under my test on aarch64 linux, all hwasan tests passed without PIE.
IIUC, only global variables in hwasan are affected by PIE.
Without PIE, a special instruction sequence assembly will be to emitted to add
the tag to the global variable address, see https://reviews.llvm.org/D120305 .
I'm not sure if hwasan linux x86-64 is different from linux aarch64 and have a
special requirment for PIE.
Also note that since https://reviews.llvm.org/D120305,
CLANG_DEFAULT_PIE_ON_LINUX was default on.
The requirement for PIE of hwasan was introduced in
https://reviews.llvm.org/D44745, this patch removes requirement for PIE.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D147121
Files:
clang/lib/Driver/SanitizerArgs.cpp
clang/test/Driver/sanitizer-ld.c
Index: clang/test/Driver/sanitizer-ld.c
===================================================================
--- clang/test/Driver/sanitizer-ld.c
+++ clang/test/Driver/sanitizer-ld.c
@@ -961,7 +961,6 @@
// RUN: | FileCheck --check-prefix=CHECK-HWASAN-X86-64-LINUX %s
//
// CHECK-HWASAN-X86-64-LINUX: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
-// CHECK-HWASAN-X86-64-LINUX: "-pie"
// CHECK-HWASAN-X86-64-LINUX-NOT: "-lc"
// CHECK-HWASAN-X86-64-LINUX: libclang_rt.hwasan-x86_64.a"
// CHECK-HWASAN-X86-64-LINUX-NOT: "--export-dynamic"
@@ -979,7 +978,6 @@
// RUN: | FileCheck --check-prefix=CHECK-SHARED-HWASAN-X86-64-LINUX %s
//
// CHECK-SHARED-HWASAN-X86-64-LINUX: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
-// CHECK-SHARED-HWASAN-X86-64-LINUX: "-pie"
// CHECK-SHARED-HWASAN-X86-64-LINUX-NOT: "-lc"
// CHECK-SHARED-HWASAN-X86-64-LINUX: libclang_rt.hwasan-x86_64.so"
// CHECK-SHARED-HWASAN-X86-64-LINUX-NOT: "-lpthread"
@@ -996,7 +994,6 @@
// RUN: | FileCheck --check-prefix=CHECK-DSO-SHARED-HWASAN-X86-64-LINUX %s
//
// CHECK-DSO-SHARED-HWASAN-X86-64-LINUX:
"{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
-// CHECK-DSO_SHARED-HWASAN-X86-64-LINUX: "-pie"
// CHECK-DSO-SHARED-HWASAN-X86-64-LINUX-NOT: "-lc"
// CHECK-DSO-SHARED-HWASAN-X86-64-LINUX: libclang_rt.hwasan-x86_64.so"
// CHECK-DSO-SHARED-HWASAN-X86-64-LINUX-NOT: "-lpthread"
@@ -1013,7 +1010,6 @@
// RUN: | FileCheck --check-prefix=CHECK-HWASAN-AARCH64-LINUX %s
//
// CHECK-HWASAN-AARCH64-LINUX: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
-// CHECK-HWASAN-AARCH64-LINUX: "-pie"
// CHECK-HWASAN-AARCH64-LINUX-NOT: "-lc"
// CHECK-HWASAN-AARCH64-LINUX: libclang_rt.hwasan-aarch64.a"
// CHECK-HWASAN-AARCH64-LINUX-NOT: "--export-dynamic"
@@ -1032,7 +1028,6 @@
// RUN: | FileCheck --check-prefix=CHECK-SHARED-HWASAN-AARCH64-LINUX %s
//
// CHECK-SHARED-HWASAN-AARCH64-LINUX: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
-// CHECK-SHARED-HWASAN-AARCH64-LINUX: "-pie"
// CHECK-SHARED-HWASAN-AARCH64-LINUX-NOT: "-lc"
// CHECK-SHARED-HWASAN-AARCH64-LINUX: libclang_rt.hwasan-aarch64.so"
// CHECK-SHARED-HWASAN-AARCH64-LINUX-NOT: "-lpthread"
@@ -1049,7 +1044,6 @@
// RUN: | FileCheck --check-prefix=CHECK-DSO-SHARED-HWASAN-AARCH64-LINUX %s
//
// CHECK-DSO-SHARED-HWASAN-AARCH64-LINUX:
"{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
-// CHECK-DSO_SHARED-HWASAN-AARCH64-LINUX: "-pie"
// CHECK-DSO-SHARED-HWASAN-AARCH64-LINUX-NOT: "-lc"
// CHECK-DSO-SHARED-HWASAN-AARCH64-LINUX: libclang_rt.hwasan-aarch64.so"
// CHECK-DSO-SHARED-HWASAN-AARCH64-LINUX-NOT: "-lpthread"
Index: clang/lib/Driver/SanitizerArgs.cpp
===================================================================
--- clang/lib/Driver/SanitizerArgs.cpp
+++ clang/lib/Driver/SanitizerArgs.cpp
@@ -38,8 +38,7 @@
static const SanitizerMask NotAllowedWithMinimalRuntime =
SanitizerKind::Function | SanitizerKind::Vptr;
static const SanitizerMask RequiresPIE =
- SanitizerKind::DataFlow | SanitizerKind::HWAddress | SanitizerKind::Scudo |
- SanitizerKind::KCFI;
+ SanitizerKind::DataFlow | SanitizerKind::Scudo | SanitizerKind::KCFI;
static const SanitizerMask NeedsUnwindTables =
SanitizerKind::Address | SanitizerKind::HWAddress | SanitizerKind::Thread |
SanitizerKind::Memory | SanitizerKind::DataFlow;
Index: clang/test/Driver/sanitizer-ld.c
===================================================================
--- clang/test/Driver/sanitizer-ld.c
+++ clang/test/Driver/sanitizer-ld.c
@@ -961,7 +961,6 @@
// RUN: | FileCheck --check-prefix=CHECK-HWASAN-X86-64-LINUX %s
//
// CHECK-HWASAN-X86-64-LINUX: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
-// CHECK-HWASAN-X86-64-LINUX: "-pie"
// CHECK-HWASAN-X86-64-LINUX-NOT: "-lc"
// CHECK-HWASAN-X86-64-LINUX: libclang_rt.hwasan-x86_64.a"
// CHECK-HWASAN-X86-64-LINUX-NOT: "--export-dynamic"
@@ -979,7 +978,6 @@
// RUN: | FileCheck --check-prefix=CHECK-SHARED-HWASAN-X86-64-LINUX %s
//
// CHECK-SHARED-HWASAN-X86-64-LINUX: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
-// CHECK-SHARED-HWASAN-X86-64-LINUX: "-pie"
// CHECK-SHARED-HWASAN-X86-64-LINUX-NOT: "-lc"
// CHECK-SHARED-HWASAN-X86-64-LINUX: libclang_rt.hwasan-x86_64.so"
// CHECK-SHARED-HWASAN-X86-64-LINUX-NOT: "-lpthread"
@@ -996,7 +994,6 @@
// RUN: | FileCheck --check-prefix=CHECK-DSO-SHARED-HWASAN-X86-64-LINUX %s
//
// CHECK-DSO-SHARED-HWASAN-X86-64-LINUX: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
-// CHECK-DSO_SHARED-HWASAN-X86-64-LINUX: "-pie"
// CHECK-DSO-SHARED-HWASAN-X86-64-LINUX-NOT: "-lc"
// CHECK-DSO-SHARED-HWASAN-X86-64-LINUX: libclang_rt.hwasan-x86_64.so"
// CHECK-DSO-SHARED-HWASAN-X86-64-LINUX-NOT: "-lpthread"
@@ -1013,7 +1010,6 @@
// RUN: | FileCheck --check-prefix=CHECK-HWASAN-AARCH64-LINUX %s
//
// CHECK-HWASAN-AARCH64-LINUX: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
-// CHECK-HWASAN-AARCH64-LINUX: "-pie"
// CHECK-HWASAN-AARCH64-LINUX-NOT: "-lc"
// CHECK-HWASAN-AARCH64-LINUX: libclang_rt.hwasan-aarch64.a"
// CHECK-HWASAN-AARCH64-LINUX-NOT: "--export-dynamic"
@@ -1032,7 +1028,6 @@
// RUN: | FileCheck --check-prefix=CHECK-SHARED-HWASAN-AARCH64-LINUX %s
//
// CHECK-SHARED-HWASAN-AARCH64-LINUX: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
-// CHECK-SHARED-HWASAN-AARCH64-LINUX: "-pie"
// CHECK-SHARED-HWASAN-AARCH64-LINUX-NOT: "-lc"
// CHECK-SHARED-HWASAN-AARCH64-LINUX: libclang_rt.hwasan-aarch64.so"
// CHECK-SHARED-HWASAN-AARCH64-LINUX-NOT: "-lpthread"
@@ -1049,7 +1044,6 @@
// RUN: | FileCheck --check-prefix=CHECK-DSO-SHARED-HWASAN-AARCH64-LINUX %s
//
// CHECK-DSO-SHARED-HWASAN-AARCH64-LINUX: "{{(.*[^-.0-9A-Z_a-z])?}}ld{{(.exe)?}}"
-// CHECK-DSO_SHARED-HWASAN-AARCH64-LINUX: "-pie"
// CHECK-DSO-SHARED-HWASAN-AARCH64-LINUX-NOT: "-lc"
// CHECK-DSO-SHARED-HWASAN-AARCH64-LINUX: libclang_rt.hwasan-aarch64.so"
// CHECK-DSO-SHARED-HWASAN-AARCH64-LINUX-NOT: "-lpthread"
Index: clang/lib/Driver/SanitizerArgs.cpp
===================================================================
--- clang/lib/Driver/SanitizerArgs.cpp
+++ clang/lib/Driver/SanitizerArgs.cpp
@@ -38,8 +38,7 @@
static const SanitizerMask NotAllowedWithMinimalRuntime =
SanitizerKind::Function | SanitizerKind::Vptr;
static const SanitizerMask RequiresPIE =
- SanitizerKind::DataFlow | SanitizerKind::HWAddress | SanitizerKind::Scudo |
- SanitizerKind::KCFI;
+ SanitizerKind::DataFlow | SanitizerKind::Scudo | SanitizerKind::KCFI;
static const SanitizerMask NeedsUnwindTables =
SanitizerKind::Address | SanitizerKind::HWAddress | SanitizerKind::Thread |
SanitizerKind::Memory | SanitizerKind::DataFlow;
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