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df6a87605d
In addition:
- optionally add global flag to capture compile intent for UAR:
__asan_detect_use_after_return_always.
The global is a SANITIZER_WEAK_ATTRIBUTE.
for issue: https://github.com/google/sanitizers/issues/1394
Reviewed By: vitalybuka
Differential Revision: https://reviews.llvm.org/D103304
65 lines
2.6 KiB
LLVM
65 lines
2.6 KiB
LLVM
; RUN: opt < %s -asan -asan-module -enable-new-pm=0 -asan-use-after-return=never -S | FileCheck --check-prefix=CHECK-PLAIN --implicit-check-not=__asan_stack_malloc %s
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; RUN: opt < %s -passes='asan-pipeline' -asan-use-after-return=never -S | FileCheck --check-prefix=CHECK-PLAIN --implicit-check-not=__asan_stack_malloc %s
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; RUN: opt < %s -asan -asan-module -enable-new-pm=0 -asan-use-after-return=runtime -S | FileCheck --check-prefixes=CHECK-UAR,CHECK-UAR-RUNTIME %s
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; RUN: opt < %s -passes='asan-pipeline' -asan-use-after-return=runtime -S | FileCheck --check-prefixes=CHECK-UAR,CHECK-UAR-RUNTIME %s
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; RUN: opt < %s -asan -asan-module -enable-new-pm=0 -asan-use-after-return=always -S \
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; RUN: | FileCheck --check-prefixes=CHECK-UAR --implicit-check-not=__asan_option_detect_stack_use_after_return %s
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; RUN: opt < %s -passes='asan-pipeline' -asan-use-after-return=always -S | FileCheck --check-prefixes=CHECK-UAR,CHECK-UAR-ALWAYS %s
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target datalayout = "e-i64:64-f80:128-s:64-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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declare void @Foo(i8*)
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define void @Bar() uwtable sanitize_address {
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entry:
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; CHECK-PLAIN-LABEL: Bar
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; CHECK-PLAIN-NOT: label
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; CHECK-PLAIN: ret void
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; CHECK-UAR-LABEL: Bar
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; CHECK-UAR-RUNTIME: load i32, i32* @__asan_option_detect_stack_use_after_return
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; CHECK-UAR-RUNTIME: label
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; CHECK-UAR-RUNTIME: call i64 @__asan_stack_malloc_4
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; CHECK-UAR-ALWAYS: call i64 @__asan_stack_malloc_always_4
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; CHECK-UAR-RUNTIME: label
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; Poison red zones.
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; CHECK-UAR: store i64 -1007680412564983311
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; CHECK-UAR: store i64 72057598113936114
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; CHECK-UAR: store i32 -218959118
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; CHECK-UAR: store i64 -868082074056920316
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; CHECK-UAR: store i16 -3085
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; CHECK-UAR: call void @Foo
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; CHECK-UAR: call void @Foo
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; CHECK-UAR: call void @Foo
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; If LocalStackBase != OrigStackBase
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; CHECK-UAR: label
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; Then Block: poison the entire frame.
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; CHECK-UAR: call void @__asan_set_shadow_f5(i64 %{{[0-9]+}}, i64 128)
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; CHECK-UAR-NOT: store i64
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; CHECK-UAR: label
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; Else Block: no UAR frame. Only unpoison the redzones.
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; CHECK-UAR: store i64 0
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; CHECK-UAR: store i64 0
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; CHECK-UAR: store i32 0
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; CHECK-UAR: store i64 0
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; CHECK-UAR: store i16 0
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; CHECK-UAR-NOT: store
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; CHECK-UAR: label
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; Done, no more stores.
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; CHECK-UAR-NOT: store
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; CHECK-UAR: ret void
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%x = alloca [20 x i8], align 16
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%y = alloca [25 x i8], align 1
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%z = alloca [500 x i8], align 1
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%xx = getelementptr inbounds [20 x i8], [20 x i8]* %x, i64 0, i64 0
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call void @Foo(i8* %xx)
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%yy = getelementptr inbounds [25 x i8], [25 x i8]* %y, i64 0, i64 0
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call void @Foo(i8* %yy)
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%zz = getelementptr inbounds [500 x i8], [500 x i8]* %z, i64 0, i64 0
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call void @Foo(i8* %zz)
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ret void
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}
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