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Code Issues Packages Projects Releases Wiki Activity

[Sanitizers] Add support for -sanitize=memtag-stack (#85515)

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This sanitizer adds MTE (memory tagging extension) checks to stack
variable accesses. Enablement simply requires setting an attribute on
function definitions, and the instrumentation is added by LLVM.

The corresponding swift-driver change is at:
https://github.com/swiftlang/swift-driver/pull/2016.

rdar://161721201
This commit is contained in:
Dan Blackwell
2025-12-05 08:51:42 +00:00
committed by GitHub
parent 8c12e0094d
commit 161d00f803
6 changed files with 76 additions and 5 deletions
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32
test/Driver/sanitizers.swift
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@@ -39,6 +39,21 @@
// RUN: %swiftc_driver -sdk '""' -resource-dir %S/Inputs/fake-resource-dir/lib/swift/ -driver-print-jobs -sanitize=undefined -target x86_64-unknown-linux-gnu %s 2>&1 | %FileCheck -check-prefix=UBSAN_LINUX %s
// RUN: %swiftc_driver -sdk '""' -resource-dir %S/Inputs/fake-resource-dir/lib/swift/ -driver-print-jobs -sanitize=undefined -target x86_64-unknown-windows-msvc %s 2>&1 | %FileCheck -check-prefix=UBSAN_WINDOWS %s
/*
* MemTagStack Sanitizer Tests
*/
// RUN: %swiftc_driver -sdk '""' -resource-dir %S/Inputs/fake-resource-dir/lib/swift/ -driver-print-jobs -sanitize=memtag-stack -target arm64-apple-macosx10.9 %s 2>&1 | %FileCheck -check-prefix=MEMTAGSAN -check-prefix=MEMTAGSAN_OSX_ARM64 %s
// RUN: not %swiftc_driver -sdk '""' -resource-dir %S/Inputs/fake-resource-dir/lib/swift/ -driver-print-jobs -sanitize=memtag-stack -target x86_64-apple-macosx10.9 %s 2>&1 | %FileCheck -check-prefix=MEMTAGSAN_OSX_X86 %s
// RUN: not %swiftc_driver -sdk '""' -resource-dir %S/Inputs/fake-resource-dir/lib/swift/ -driver-print-jobs -sanitize=memtag-stack -target x86-apple-macosx10.9 %s 2>&1 | %FileCheck -check-prefix=MEMTAGSAN_OSX_32 %s
// RUN: not %swiftc_driver -sdk '""' -resource-dir %S/Inputs/fake-resource-dir/lib/swift/ -driver-print-jobs -sanitize=memtag-stack -target x86_64-apple-ios7.1-simulator %s 2>&1 | %FileCheck -check-prefix=MEMTAGSAN_IOSSIM %s
// RUN: %swiftc_driver -sdk '""' -resource-dir %S/Inputs/fake-resource-dir/lib/swift/ -driver-print-jobs -sanitize=memtag-stack -target arm64-apple-ios7.1 %s 2>&1 | %FileCheck -check-prefix=MEMTAGSAN_IOS %s
// RUN: not %swiftc_driver -sdk '""' -resource-dir %S/Inputs/fake-resource-dir/lib/swift/ -driver-print-jobs -sanitize=memtag-stack -target x86_64-apple-tvos9.0-simulator %s 2>&1 | %FileCheck -check-prefix=MEMTAGSAN_tvOS_SIM %s
// RUN: %swiftc_driver -sdk '""' -resource-dir %S/Inputs/fake-resource-dir/lib/swift/ -driver-print-jobs -sanitize=memtag-stack -target arm64-apple-tvos9.0 %s 2>&1 | %FileCheck -check-prefix=MEMTAGSAN_tvOS %s
// RUN: not %swiftc_driver -sdk '""' -resource-dir %S/Inputs/fake-resource-dir/lib/swift/ -driver-print-jobs -sanitize=memtag-stack -target i386-apple-watchos2.0-simulator %s 2>&1 | %FileCheck -check-prefix=MEMTAGSAN_watchOS_SIM %s
// RUN: not %swiftc_driver -sdk '""' -resource-dir %S/Inputs/fake-resource-dir/lib/swift/ -driver-print-jobs -sanitize=memtag-stack -target armv7k-apple-watchos2.0 %s 2>&1 | %FileCheck -check-prefix=MEMTAGSAN_watchOS %s
// RUN: not %swiftc_driver -sdk '""' -resource-dir %S/Inputs/fake-resource-dir/lib/swift/ -driver-print-jobs -sanitize=memtag-stack -target x86_64-unknown-windows-msvc %s 2>&1 | %FileCheck -check-prefix=MEMTAGSAN_WINDOWS %s
// RUN: not %swiftc_driver -sdk '""' -resource-dir %S/Inputs/fake-resource-dir/lib/swift/ -driver-print-jobs -sanitize=memtag-stack -target x86_64-unknown-linux-gnu %s 2>&1 | %FileCheck -check-prefix=MEMTAGSAN_LINUX %s
/*
* Multiple Sanitizers At Once
*/
@@ -50,6 +65,7 @@
// RUN: not %swiftc_driver -sdk '""' -resource-dir %S/Inputs/fake-resource-dir/lib/swift/ -driver-print-jobs -target x86_64-apple-macosx10.9 -sanitize=address,unknown %s 2>&1 | %FileCheck -check-prefix=BADARG %s
// RUN: not %swiftc_driver -sdk '""' -resource-dir %S/Inputs/fake-resource-dir/lib/swift/ -driver-print-jobs -target x86_64-apple-macosx10.9 -sanitize=address -sanitize=unknown %s 2>&1 | %FileCheck -check-prefix=BADARG %s
// RUN: not %swiftc_driver -sdk '""' -resource-dir %S/Inputs/fake-resource-dir/lib/swift/ -driver-print-jobs -target x86_64-apple-macosx10.9 -sanitize=address,thread %s 2>&1 | %FileCheck -check-prefix=INCOMPATIBLESANITIZERS %s
// RUN: not %swiftc_driver -sdk '""' -resource-dir %S/Inputs/fake-resource-dir/lib/swift/ -driver-print-jobs -target arm64-apple-macosx10.9 -sanitize=memtag-stack,address %s 2>&1 | %FileCheck -check-prefix=INCOMPATIBLESANITIZERS_2 %s
/*
* Make sure we don't accidentally add the sanitizer library path when building libraries or modules
@@ -106,7 +122,23 @@
// UBSAN: -rpath @executable_path
// MEMTAGSAN: swift
// MEMTAGSAN: -sanitize=memtag-stack
// MEMTAGSAN_OSX_ARM64-NOT: unsupported option '-sanitize=memtag-stack' for target 'arm64-apple-macosx10.9'
// MEMTAGSAN_OSX_X86: unsupported option '-sanitize=memtag-stack' for target 'x86_64-apple-macosx10.9'
// MEMTAGSAN_OSX_32: unsupported option '-sanitize=memtag-stack' for target 'x86-apple-macosx10.9'
// MEMTAGSAN_IOSSIM: unsupported option '-sanitize=memtag-stack' for target 'x86_64-apple-ios7.1-simulator'
// MEMTAGSAN_IOS-NOT: unsupported option '-sanitize=memtag-stack' for target 'arm64-apple-ios7.1'
// MEMTAGSAN_tvOS_SIM: unsupported option '-sanitize=memtag-stack' for target 'x86_64-apple-tvos9.0-simulator'
// MEMTAGSAN_tvOS-NOT: unsupported option '-sanitize=memtag-stack' for target 'arm64-apple-tvos9.0'
// MEMTAGSAN_watchOS_SIM: unsupported option '-sanitize=memtag-stack' for target 'i386-apple-watchos2.0-simulator'
// MEMTAGSAN_watchOS: unsupported option '-sanitize=memtag-stack' for target 'armv7k-apple-watchos2.0'
// MEMTAGSAN_LINUX: unsupported option '-sanitize=memtag-stack' for target 'x86_64-unknown-linux-gnu'
// MEMTAGSAN_WINDOWS: unsupported option '-sanitize=memtag-stack' for target 'x86_64-unknown-windows-msvc'
// MULTIPLE_SAN_LINUX: -fsanitize=address,undefined,fuzzer
// BADARG: unsupported argument 'unknown' to option '-sanitize='
// INCOMPATIBLESANITIZERS: argument '-sanitize=address' is not allowed with '-sanitize=thread'
// INCOMPATIBLESANITIZERS_2: argument '-sanitize=address' is not allowed with '-sanitize=memtag-stack'