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
42 lines
1.2 KiB
C++
42 lines
1.2 KiB
C++
// RUN: %clang_scudo %s -o %t
|
|
// RUN: SCUDO_OPTIONS=DeallocationTypeMismatch=1 not %run %t mallocdel 2>&1 | FileCheck %s
|
|
// RUN: SCUDO_OPTIONS=DeallocationTypeMismatch=0 %run %t mallocdel 2>&1
|
|
// RUN: SCUDO_OPTIONS=DeallocationTypeMismatch=1 not %run %t newfree 2>&1 | FileCheck %s
|
|
// RUN: SCUDO_OPTIONS=DeallocationTypeMismatch=0 %run %t newfree 2>&1
|
|
// RUN: SCUDO_OPTIONS=DeallocationTypeMismatch=1 not %run %t memaligndel 2>&1 | FileCheck %s
|
|
// RUN: SCUDO_OPTIONS=DeallocationTypeMismatch=0 %run %t memaligndel 2>&1
|
|
|
|
// Tests that type mismatches between allocation and deallocation functions are
|
|
// caught when the related option is set.
|
|
|
|
#include <assert.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <malloc.h>
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
assert(argc == 2);
|
|
if (!strcmp(argv[1], "mallocdel")) {
|
|
int *p = (int *)malloc(16);
|
|
if (!p)
|
|
return 1;
|
|
delete p;
|
|
}
|
|
if (!strcmp(argv[1], "newfree")) {
|
|
int *p = new int;
|
|
if (!p)
|
|
return 1;
|
|
free((void *)p);
|
|
}
|
|
if (!strcmp(argv[1], "memaligndel")) {
|
|
int *p = (int *)memalign(0x10, 0x10);
|
|
if (!p)
|
|
return 1;
|
|
delete p;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// CHECK: ERROR: allocation type mismatch on address
|