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Author SHA1 Message Date
Dimitry Andric f2ac1d1df2 Recommit: Stop intercepting some malloc-related functions on FreeBSD and 
macOS

Summary:
In https://bugs.freebsd.org/215125 I was notified that some configure
scripts attempt to test for the Linux-specific `mallinfo` and `mallopt`
functions by compiling and linking small programs which references the
functions, and observing whether that results in errors.

FreeBSD and macOS do not have the `mallinfo` and `mallopt` functions, so
normally these tests would fail, but when sanitizers are enabled, they
incorrectly succeed, because the sanitizers define interceptors for
these functions.  This also applies to some other malloc-related
functions, such as `memalign`, `pvalloc` and `cfree`.

Fix this by not intercepting `mallinfo`, `mallopt`, `memalign`,
`pvalloc` and `cfree` for FreeBSD and macOS, in all sanitizers.

Also delete the non-functional `cfree` wrapper for Windows, to fix the
test cases on that platform.

Reviewers: emaste, kcc, rnk

Subscribers: timurrrr, eugenis, hans, joerg, llvm-commits, kubamracek

Differential Revision: https://reviews.llvm.org/D27654

llvm-svn: 293536
 2017-01-30 19:06:13 +00:00
Evgeniy Stepanov 8bf0633288 Revert "Stop intercepting some malloc-related functions on FreeBSD and macOS" 
This reverts r293337, which breaks tests on Windows:

malloc-no-intercept-499eb7.o : error LNK2019: unresolved external symbol _mallinfo referenced in function _main

llvm-svn: 293346
 2017-01-27 23:53:20 +00:00
Dimitry Andric 47e0ef3148 Stop intercepting some malloc-related functions on FreeBSD and macOS 
Summary:
In https://bugs.freebsd.org/215125 I was notified that some configure
scripts attempt to test for the Linux-specific `mallinfo` and `mallopt`
functions by compiling and linking small programs which references the
functions, and observing whether that results in errors.

FreeBSD and macOS do not have the `mallinfo` and `mallopt` functions, so
normally these tests would fail, but when sanitizers are enabled, they
incorrectly succeed, because the sanitizers define interceptors for
these functions.  This also applies to some other malloc-related
functions, such as `memalign`, `pvalloc` and `cfree`.

Fix this by not intercepting `mallinfo`, `mallopt`, `memalign`,
`pvalloc` and `cfree` for FreeBSD and macOS, in all sanitizers.

Reviewers: emaste, kcc

Subscribers: hans, joerg, llvm-commits, kubamracek

Differential Revision: https://reviews.llvm.org/D27654

llvm-svn: 293337
 2017-01-27 22:19:11 +00:00
Kostya Serebryany 7c5ae7cbc6 [sanitizer] enable random shuffling the memory chunks inside the allocator, under a flag. Set this flag for the scudo allocator, add a test. 
llvm-svn: 279793
 2016-08-26 00:06:03 +00:00
Kostya Serebryany 15647b17f3 [sanitizer] change SizeClassAllocator64 to accept just one template parameter instead of 5. First, this will make the mangled names shorter. Second, this will make adding more parameters simpler. 
llvm-svn: 279771
 2016-08-25 20:23:08 +00:00
Kostya Serebryany bfd69e0580 [sanitizer] allocator: introduce kUseSeparateSizeClassForBatch (false by default). When true, it will cause all TransferBatches to be allocated on a separate dedicated size class, which improves security and may potentially simplify memory reclamation. However in the current state this may cause up to 3% extra memory usage. Subsequent changes should bring this overhead down 
llvm-svn: 276377
 2016-07-22 01:13:13 +00:00
Kostya Serebryany 9835a81529 [sanitizers] split sanitizer_allocator.h into a number of smaller .h files; NFC 
llvm-svn: 276195
 2016-07-20 22:06:41 +00:00
Kostya Serebryany 3884f1a5bd [sanitizer] add a function MmapNoAccess that mmaps a protected region *somewhere*; use MmapNoAccess in the Allocator when SpaceBeg is not a constant. In this mode the allocator will be a bit more hardened 
llvm-svn: 267256
 2016-04-23 00:05:24 +00:00
Renato Golin aa673486c4 Revert "[sanitizer] Allow the sanitizer allocator to use a non-fixed address range. An allocator with a non-fixed address range will be attack-resistan. NFC for the sanitizers at this point." 
This reverts commit r267094, because it broke a lot of MSAN tests in AArch64.
Being NFC and all, this needs some deeper investigation before it goes in again.

llvm-svn: 267136
 2016-04-22 11:18:14 +00:00
Kostya Serebryany d55d0875d2 [sanitizer] Allow the sanitizer allocator to use a non-fixed address range. An allocator with a non-fixed address range will be attack-resistan. NFC for the sanitizers at this point. 
llvm-svn: 267094
 2016-04-22 01:08:54 +00:00
Kostya Serebryany e63db09bea [sanitizer] update the sanitizer_allocator_testlib 
llvm-svn: 266934
 2016-04-20 23:28:06 +00:00
Nick Lewycky af2064f7ab Add throw() specifiers to more redeclarations of operator delete and operator delete[]. 
llvm-svn: 201016
 2014-02-08 01:42:08 +00:00
Dmitry Vyukov 9ab63f68fc asan: fix standalone malloc implementation 
llvm-svn: 172529
 2013-01-15 12:57:02 +00:00
Dmitry Vyukov 1f48c1a9a1 asan: fix lint warnings 
llvm-svn: 172520
 2013-01-15 08:51:10 +00:00
Dmitry Vyukov 74764617d7 asan: fix bugs in the testlib 
llvm-svn: 172519
 2013-01-15 08:33:41 +00:00
Dmitry Vyukov 1e4b54d196 asan: rename the file (it's not 64-bit specific anymore) 
llvm-svn: 172518
 2013-01-15 08:04:27 +00:00