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Author SHA1 Message Date
Kuba Brecka 465cb8a6fa [tsan] Use malloc zone interceptors on OS X, part 1 (refactoring) 
TSan needs to use a custom malloc zone on OS X, which is already implemented in ASan.  This patch is a refactoring patch (NFC) that extracts this from ASan into sanitizer_common, where we can reuse it in TSan.

Reviewed at http://reviews.llvm.org/D14330

llvm-svn: 252052
 2015-11-04 15:43:45 +00:00
Juergen Ributzka 6e25858b5c Revert "[ASan] Add the new __asan_mz_* symbols to asan_interface_internal.h" 
Reverting r228137 to unbreak the build bots.

llvm-svn: 228172
 2015-02-04 19:14:35 +00:00
Alexander Potapenko 42fa73cef0 [ASan] Add the new __asan_mz_* symbols to asan_interface_internal.h 
to fix the interface_symbols_darwin.c test.

llvm-svn: 228137
 2015-02-04 12:42:12 +00:00
Alexander Potapenko 270000c194 [ASan] Remove ifdefs for MAC_OS_X_VERSION_10_6, as ASan assumes OSX >= 10.6 
llvm-svn: 227968
 2015-02-03 12:47:15 +00:00
Alexander Potapenko f203ba35f1 [ASan] Add __asan_ prefix for "mz_*" allocation/deallocation functions 
and make them global so that they're not removed by `strip -x`.

llvm-svn: 227967
 2015-02-03 12:38:10 +00:00
Alexey Samsonov 656c29b08f Replace InternalScopedBuffer<char> with InternalScopedString where applicable. 
Summary: No functionality change.

Test Plan: make check-all

Reviewers: kcc

Reviewed By: kcc

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D6472

llvm-svn: 223164
 2014-12-02 22:20:11 +00:00
Kostya Serebryany b9e31d7fcd [asan] use some LIKELY/UNLIKELY 
llvm-svn: 208776
 2014-05-14 14:03:31 +00:00
Alexander Potapenko 4672bacaef [ASan] Get rid of asan_mac.h, which contents have been moved to sanitizer_mac.h 
llvm-svn: 200757
 2014-02-04 11:35:59 +00:00
Alexander Potapenko 768e315a74 [ASan] Move GetMacosVersion() to sanitizer_common. 
llvm-svn: 200700
 2014-02-03 15:32:19 +00:00
Evgeniy Stepanov 364bfdf4c9 [asan] Fix a bunch of style issues. 
llvm-svn: 199380
 2014-01-16 13:17:13 +00:00
Evgeniy Stepanov c61623b170 [asan] Implement delayed activation of AddressSanitizer 
This change adds ASAN_OPTIONS=start_deactivated=1 flag. When present, ASan will
start in "deactivated" mode, with no heap poisoning, no quarantine, no stack
trace gathering, and minimal redzones. All this features come back when
__asan_init is called for the constructor of an instrumented library.

The primary use case for this feature is Android. Code itself is not
Android-specific, and this patch includes a Linux test for it.

llvm-svn: 199377
 2014-01-16 12:31:50 +00:00
Alexander Potapenko d0c91acb58 [ASan] Do not protect the malloc zone created by malloc_zone_create() on Snow Leopard and earlier systems. 
Fixes https://code.google.com/p/address-sanitizer/issues/detail?id=208

llvm-svn: 185621
 2013-07-04 10:16:12 +00:00
Alexander Potapenko 2b064a2b4e [ASan][OSX] Make sure the zones created by malloc_create_zone() are write-protected. 
Add a test.

llvm-svn: 185140
 2013-06-28 10:01:09 +00:00
Alexander Potapenko 593f833e9b [ASan][OSX] Fix the incorrect malloc_create_zone() implementation that led to out-of-bounds mprotect()s 
(https://code.google.com/p/address-sanitizer/issues/detail?id=203)
Add a test.

llvm-svn: 185138
 2013-06-28 09:21:31 +00:00
Alexey Samsonov 21cb74318c [ASan] Kill the remainders of platform defines in favor of SANITIZER_ defines 
llvm-svn: 178629
 2013-04-03 07:29:53 +00:00
Alexey Samsonov 54afba8b62 [ASan] Switch ASan to generic ThreadRegistry from sanitizer_common. Delete ASan-specific AsanThreadRegistry. 
llvm-svn: 177634
 2013-03-21 11:23:41 +00:00
Alexey Samsonov 920b3b9a0c [ASan] Move malloc stats collection away from AsanThreadRegistry class. 
llvm-svn: 177508
 2013-03-20 10:11:24 +00:00
Evgeniy Stepanov 95eaa21637 [sanitizer] More renamed macros. 
llvm-svn: 177401
 2013-03-19 14:54:17 +00:00
Evgeniy Stepanov 0af672326a [sanitizer] Replace more platform checks with SANITIZER_ constants. 
llvm-svn: 177400
 2013-03-19 14:33:38 +00:00
Alexander Potapenko cae42d23a6 [ASan] Use dylib interposition to hook memory allocation in the dynamic runtime. 
This CL drastically simplifies the way we're hooking the memory allocation routines in ASan on Mac by using dylib interposition to replace the main malloc_zone_* functions. This allows us to avoid replacing the default CFAllocator and drop the CF dependency at all.

Committing this patch will result in the static runtime being broken. A follow-up CL will switch ASan to use the dynamic runtime library.

llvm-svn: 173134
 2013-01-22 09:14:54 +00:00
Kostya Serebryany 3674c6b13b [asan] add a flag alloc_dealloc_mismatch (off by default for now) which finds malloc/delete, new/free, new/delete[], etc mismatches 
llvm-svn: 170869
 2012-12-21 08:53:59 +00:00
Kostya Serebryany 6852bce2f2 [asan] fix mac build 
llvm-svn: 170118
 2012-12-13 10:01:20 +00:00
Kostya Serebryany baf583c443 [asan] add two asan flags: fast_unwind_on_fatal and fast_unwind_on_malloc to allow using the slow CFI-based unwinder 
llvm-svn: 170117
 2012-12-13 09:34:23 +00:00
Kostya Serebryany f22c697f58 [asan] get rid of some of the uses of kPageSize. The intent is to get rid of it completely to support platforms with multiple possible page sizes. 
llvm-svn: 168517
 2012-11-23 15:38:49 +00:00
Alexander Potapenko 1eef2b813c [ASan] Rename ReplaceCFAllocator to MaybeReplaceCFAllocator. 
Replace the allocator only if the replace_cfallocator flag is set (in some cases it wasn't checked)

llvm-svn: 166550
 2012-10-24 09:35:23 +00:00
Alexey Samsonov 83ecabe6e6 [Sanitizer] Remove unneeded returns after UNIMPLEMENTED macro 
llvm-svn: 165493
 2012-10-09 08:51:08 +00:00
Alexander Potapenko f3a96894a6 Give more accurate malloc statistics to malloc_zone_statistics(). 
Fix a warning in macros instantiation.

llvm-svn: 163716
 2012-09-12 15:29:50 +00:00
Alexey Samsonov 4787d0fbef [ASan] more macro/casting magic to suppress warnings 
llvm-svn: 163706
 2012-09-12 14:10:14 +00:00
Alexander Potapenko 814451909a Initial support for malloc_zone_statistics. All counters are set to zero now. 
This is required to overcome a crash in mstats() (http://code.google.com/p/address-sanitizer/issues/detail?id=109)

llvm-svn: 163690
 2012-09-12 09:38:51 +00:00
Alexander Potapenko 5a9b616d6b For invalid pointers passed to free_common check whether they are actually skewed to hold an additional CFAllocatorRef. 
If so, fix the pointer and pass it to asan_free.

See http://code.google.com/p/address-sanitizer/issues/detail?id=70 for more background.

llvm-svn: 162839
 2012-08-29 12:36:24 +00:00
Kostya Serebryany bb6f165952 [asan] get rid of AsanPrintf in favor of Printf from sanitizer_common 
llvm-svn: 162746
 2012-08-28 11:34:40 +00:00
Alexander Potapenko c62210e3ff Commit the source and CMake changes that will allow to build ASan runtime 
as a shared library on Mac OS. This will provide an alternative to
mach_override.

llvm-svn: 162091
 2012-08-17 09:00:08 +00:00
Alexander Potapenko 33c028fa05 Remove the setjmp.h dependency, fix the comment. 
llvm-svn: 161662
 2012-08-10 12:46:39 +00:00
Alexander Potapenko 2cdd4f165e Temporary fix for http://code.google.com/p/address-sanitizer/issues/detail?id=99: 
when trying to free memory that actually belongs to the system purgeable zone, use malloc_zone_free(malloc_default_purgeable_zone(), ptr) instead of asan_free().

llvm-svn: 161661
 2012-08-10 11:33:01 +00:00
Alexey Samsonov f343eb7df4 [ASan] Move mac-specific error reports to asan_report.cc as well 
llvm-svn: 161576
 2012-08-09 12:15:40 +00:00
Alexander Potapenko 51e6488b31 Intercept CFAllocator for each thread in the program. 
Test that child threads use the ASan allocator, that allocated memory can be passed to another thread and deallocated on it.
This should fix http://code.google.com/p/address-sanitizer/issues/detail?id=81

llvm-svn: 160630
 2012-07-23 14:07:58 +00:00
Alexey Samsonov 34efb8e9b9 [ASan] Use common flags parsing machinery. 
llvm-svn: 159933
 2012-07-09 14:36:04 +00:00
Alexander Potapenko 740d166c3e Small fix: do not replace the default CFAllocator if it has been replaced already. 
llvm-svn: 159824
 2012-07-06 13:52:28 +00:00
Alexander Potapenko dc211a8db4 Because CFAllocatorCreate() should also be called after __CFInitialize() on Lion, 
do so by factoring the CFAllocator logic into ReplaceCFAllocator(), which is called from
either the __CFInitialize wrapper or __asan_init(), depending on which of them is called later.

llvm-svn: 159822
 2012-07-06 13:24:28 +00:00
Alexander Potapenko 89f9270366 A portable way to check whether __CFInitialize has been called: compare kCFAllocatorSystemDefault._base._cfisa to 0. 
This should fix http://code.google.com/p/address-sanitizer/issues/detail?id=87 on both Lion and Snow Leopard.

llvm-svn: 159821
 2012-07-06 13:04:12 +00:00
Alexander Potapenko d2ff0b087a Do not check for __CFRuntimeClassTableSize on non-10.6 systems, where this symbol is private. 
This change may cause http://code.google.com/p/address-sanitizer/issues/detail?id=87 to re-appear on Lion.

llvm-svn: 159819
 2012-07-06 11:58:54 +00:00
Alexander Potapenko 25b567dd0d Fix http://code.google.com/p/address-sanitizer/issues/detail?id=87 by making sure we replace the default CFAllocator only after __CFInitialize has been called. 
llvm-svn: 159749
 2012-07-05 14:46:56 +00:00
Alexander Potapenko 77769caaef Do not call malloc_zone_from_ptr() for the pointers passed to mz_size() and mz_free(). 
These callbacks assume that the memory belongs to asan_zone, so it's incorrect to pass it to another one.
If a need for this appears (e.g. system libraries free the memory using wrong zone), it should be documented.

llvm-svn: 159713
 2012-07-04 13:58:07 +00:00
Alexander Potapenko 1bde28b464 Factor the common code out of cf_free and mz_free. 
Introduce the mac_ignore_invalid_free flag (0 by default) which makes both cf_free and mz_free ignore invalid free invocations and leak memory.

llvm-svn: 158885
 2012-06-21 01:01:20 +00:00
Alexander Potapenko f9f2fbacb3 Actually intercept free() to ensure that the deallocations caused by other functions directly calling it are routed to our allocator. 
For the allocations that do not belong to any malloc zone check whether they're padded with a pointer to ASan's CFAllocator. If so, free the original (unpadded) pointer.
This should fix AddressSanitizerMac.NSURLDeallocation and issue 70.

llvm-svn: 158863
 2012-06-20 22:29:09 +00:00
Alexey Samsonov 51ae983718 [Sanitizer]: Introduce a common internal printf function. For now, also use tool-specific wrappers TsanPrintf (its output is controlled by TSan flags) and AsanPrintf (which copies its results to the ASan-private buffer). Supported formats: %[z]{d,u,x}, %s, %p. Re-write all format strings in TSan according to this format (this should have no effect on 64-bit platforms). 
llvm-svn: 158065
 2012-06-06 13:11:29 +00:00
Alexey Samsonov 485d3dc363 Remove file-type tags for .cc files in ASan run-time library 
llvm-svn: 157927
 2012-06-04 13:50:10 +00:00
Kostya Serebryany 8d03204204 [asan] more renaming 
llvm-svn: 157746
 2012-05-31 14:35:53 +00:00
Alexander Potapenko c6eb6a8287 Add internal_memset and replace the uses of REAL(memset) with it where the performance allows. 
llvm-svn: 153641
 2012-03-29 12:20:47 +00:00
Eli Friedman e781266905 Make sure to properly ifdef out an unused function on OSX < 10.6. PR12136. Patch from Jeremy Huddleston. 
llvm-svn: 152085
 2012-03-06 01:21:14 +00:00