712fc9803a
Summary: This is an initial implementation of a Hardened Allocator based on Sanitizer Common's CombinedAllocator. It aims at mitigating heap based vulnerabilities by adding several features to the base allocator, while staying relatively fast. The following were implemented: - additional consistency checks on the allocation function parameters and on the heap chunks; - use of checksum protected chunk header, to detect corruption; - randomness to the allocator base; - delayed freelist (quarantine), to mitigate use after free and overall determinism. Additional mitigations are in the works. Reviewers: eugenis, aizatsky, pcc, krasin, vitalybuka, glider, dvyukov, kcc Subscribers: kubabrecka, filcab, llvm-commits Differential Revision: http://reviews.llvm.org/D20084 llvm-svn: 271968
41 lines
1.3 KiB
C++
41 lines
1.3 KiB
C++
// RUN: %clang_scudo -fsized-deallocation %s -o %t
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// RUN: SCUDO_OPTIONS=DeleteSizeMismatch=1 %run %t gooddel 2>&1
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// RUN: SCUDO_OPTIONS=DeleteSizeMismatch=1 not %run %t baddel 2>&1 | FileCheck %s
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// RUN: SCUDO_OPTIONS=DeleteSizeMismatch=0 %run %t baddel 2>&1
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// RUN: SCUDO_OPTIONS=DeleteSizeMismatch=1 %run %t gooddelarr 2>&1
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// RUN: SCUDO_OPTIONS=DeleteSizeMismatch=1 not %run %t baddelarr 2>&1 | FileCheck %s
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// RUN: SCUDO_OPTIONS=DeleteSizeMismatch=0 %run %t baddelarr 2>&1
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// Ensures that the sized delete operator errors out when the appropriate
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// option is passed and the sizes do not match between allocation and
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// deallocation functions.
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#include <new>
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#include <assert.h>
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#include <stdlib.h>
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#include <string.h>
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int main(int argc, char **argv)
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{
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assert(argc == 2);
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if (!strcmp(argv[1], "gooddel")) {
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long long *p = new long long;
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operator delete(p, sizeof(long long));
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}
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if (!strcmp(argv[1], "baddel")) {
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long long *p = new long long;
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operator delete(p, 2);
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}
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if (!strcmp(argv[1], "gooddelarr")) {
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char *p = new char[64];
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operator delete[](p, 64);
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}
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if (!strcmp(argv[1], "baddelarr")) {
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char *p = new char[63];
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operator delete[](p, 64);
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}
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return 0;
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}
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// CHECK: ERROR: invalid sized delete on chunk at address
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