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[TEST][hwasan] Check more details in overflow test #67059

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merged 1 commit into from
Sep 21, 2023
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[TEST][hwasan] Check more details in overflow test #67059

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49 changes: 40 additions & 9 deletions compiler-rt/test/hwasan/TestCases/heap-buffer-overflow-into.c
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Original file line number Diff line number Diff line change
@@ -1,8 +1,12 @@
// RUN: %clang_hwasan %s -o %t
// RUN: not %run %t 5 10 2>&1 | FileCheck %s --check-prefix=CHECK5
// RUN: not %run %t 7 10 2>&1 | FileCheck %s --check-prefix=CHECK7
// RUN: not %run %t 8 20 2>&1 | FileCheck %s --check-prefix=CHECK8
// RUN: not %run %t 32 20 2>&1 | FileCheck %s --check-prefix=CHECK32
// RUN: not %run %t 5 10 26 2>&1 | FileCheck %s --check-prefixes=CHECK,CHECK_SMALL,CHECK5
// RUN: not %run %t 7 10 26 2>&1 | FileCheck %s --check-prefixes=CHECK,CHECK_SMALL,CHECK7
// RUN: not %run %t 8 20 26 2>&1 | FileCheck %s --check-prefixes=CHECK,CHECK_SMALL,CHECK8
// RUN: not %run %t 295 300 26 2>&1 | FileCheck %s --check-prefixes=CHECK,CHECK_SMALL,CHECK295
// RUN: not %run %t 1 550 550 2>&1 | FileCheck %s --check-prefixes=CHECK,CHECK_SMALL,CHECK1

// Full granule.
// RUN: not %run %t 32 20 26 2>&1 | FileCheck %s --check-prefixes=CHECK,CHECK_FULL,CHECK32

#include <sanitizer/hwasan_interface.h>
#include <stdio.h>
Expand All @@ -15,16 +19,43 @@ int main(int argc, char **argv) {
fprintf(stderr, "Invalid number of arguments.");
abort();
}
int read_offset = argc < 2 ? 5 : atoi(argv[1]);
int size = argc < 3 ? 10 : atoi(argv[2]);
char *volatile x = (char *)malloc(size);
memset(x + read_offset, 0, 26);
int read_offset = atoi(argv[1]);
int size = atoi(argv[2]);
int access_size = atoi(argv[3]);
while (1) {
char *volatile x = (char *)malloc(size);
if (__hwasan_test_shadow(x, size + 1) == size)
memset(x + read_offset, 0, access_size);
free(x);
}

// CHECK_SMALL: WRITE of size {{26|550}} at {{.*}} tags: [[TAG:[0-9a-f]+]]/{{[0-9a-f]+}}([[TAG]]) (ptr/mem)
// CHECK_FULL: WRITE of size 26 at {{.*}} tags: [[TAG:[0-9a-f]+]]/00 (ptr/mem)

// CHECK5: Invalid access starting at offset 5
// CHECK5: is located 5 bytes inside a 10-byte region
// CHECK7: Invalid access starting at offset 3
// CHECK7: is located 7 bytes inside a 10-byte region
// CHECK8: Invalid access starting at offset 12
// CHECK8: is located 8 bytes inside a 20-byte region
// CHECK295: Invalid access starting at offset 5
// CHECK295: is located 295 bytes inside a 300-byte region
// CHECK1: Invalid access starting at offset 549
// CHECK1: is located 1 bytes inside a 550-byte region

// CHECK32-NOT: Invalid access starting at offset
// CHECK32: is located 12 bytes after a 20-byte region
free(x);

// CHECK-LABEL: Memory tags around the buggy address
// CHECK5: =>{{.*}}[0a]
// CHECK7: =>{{.*}}[0a]
// CHECK8: =>{{.*}}[04]
// CHECK295: =>{{.*}}[0c]
// CHECK1: =>{{.*}}[06]

// CHECK32: =>{{.*}}[00]

// CHECK-LABEL: Tags for short granules around the buggy address
// CHECK_SMALL: =>{{.*}}{{\[}}[[TAG]]{{\]}}
// CHECK_FULL: =>{{.*}}[..]
}