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82 Commits

Author SHA1 Message Date
Kostya Serebryany 20f3a52249 [sanitizer] add CombinedAllocator::InitIfLinkerInitialized and use it in lsan: speeds up lsan start-up time by ~25% 
llvm-svn: 224469
 2014-12-17 23:06:36 +00:00
Alexey Samsonov 6334f46db8 [Sanitizer] Introduce Allocator::may_return_null bool flag. 
Summary:
Turn "allocator_may_return_null" common flag into an
Allocator::may_return_null bool flag. We want to make sure
that common flags are immutable after initialization. There
are cases when we want to change this flag in the allocator
at runtime: e.g. in unit tests and during ASan activation
on Android.

Test Plan: regression test suite, real-life applications

Reviewers: kcc, eugenis

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D6623

llvm-svn: 224148
 2014-12-12 20:07:35 +00:00
Dmitry Vyukov e9a5f03716 tsan: support mmap(MAP_32BIT) 
Allow user memory in the first TB of address space.
This also enabled non-pie binaries and freebsd.
Fixes issue:
https://code.google.com/p/thread-sanitizer/issues/detail?id=5

llvm-svn: 220571
 2014-10-24 17:07:29 +00:00
Evgeniy Stepanov 7900202e14 [sanitizer] Add a bunch of sanity checks. 
llvm-svn: 220528
 2014-10-23 22:29:51 +00:00
Alexey Samsonov cffaa1c298 Fix apparent thinko in r209744: allocator stats can be zero 
llvm-svn: 212071
 2014-06-30 22:40:58 +00:00
Dmitry Vyukov 5864ac39ee tsan: do not use 64-bit atomics in allocator code 
64-bit atomics make porting of asan to 32-bits platforms problematic.

llvm-svn: 209744
 2014-05-28 15:22:12 +00:00
Kostya Serebryany 7fe86589f1 [sanitizer] revert r200197: the buggy kernel (https://bugzilla.kernel.org/show_bug.cgi?id=67651) is almost unusable with asan even with this workaround (too slow), so this workaround makes no sense. The asan/msan bootstrap bot was changed to use a non-buggy kernel 
llvm-svn: 200217
 2014-01-27 13:05:09 +00:00
Kostya Serebryany 0a5049b780 [sanitizer] increase the mmap granularity in sanitizer allocator from 2^16 to 2^18. This is a partial workaround for the fresh Kernel bug https://bugzilla.kernel.org/show_bug.cgi?id=67651 
llvm-svn: 200197
 2014-01-27 07:35:32 +00:00
Kostya Serebryany ccfc0481f1 [sanitizer] Implement TwoLevelByteMap and use it for the internal allocator on 64-bit. 
Summary:
Implement TwoLevelByteMap and use it for the internal allocator on 64-bit.
This reduces bss on 64-bit by ~8Mb because we don't use FlatByteMap on 64-bits any more.

Dmitry, please check my understanding of atomics.

Reviewers: dvyukov

Reviewed By: dvyukov

CC: samsonov, llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D2259

llvm-svn: 195637
 2013-11-25 11:33:41 +00:00
Sergey Matveev 634a75b63e [sanitizer] Do not clear memory which comes from secondary allocator. 
Secondary allocator is mmap-based, so the memory is already zeroed.

llvm-svn: 195571
 2013-11-24 14:45:38 +00:00
Kostya Serebryany a2fde9484f [sanitizer] use 16-byte aligned bzero in performance critical place (mostly for lsan) 
llvm-svn: 195549
 2013-11-23 12:49:19 +00:00
Peter Collingbourne 8d27910d7d Rename SpinMutex::AssertHeld to CheckLocked, for consistency with BlockingMutex. 
llvm-svn: 193447
 2013-10-25 23:03:21 +00:00
Kostya Serebryany f04ae33106 [asan] Fix a deadlock between asan's allocator and lsan 
Summary:
This fixes a deadlock which happens in lsan
on a large memalign-allocated chunk that resides in lsan's root set.

Reviewers: samsonov, earthdok

Reviewed By: earthdok

CC: llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D1957

llvm-svn: 192885
 2013-10-17 11:18:11 +00:00
Kostya Serebryany ada5a7b7ef [sanitizer] make the allocator crash instead of returning 0 on huge size (controlled by the allocator_may_return_null flag) 
llvm-svn: 190127
 2013-09-06 09:25:11 +00:00
Dmitry Vyukov 87bf47894c tsan: better diagnostics for invalid addresses passed to free() 
llvm-svn: 187980
 2013-08-08 13:47:50 +00:00
Alexey Samsonov b42ea7ef21 Lint fixes 
llvm-svn: 187726
 2013-08-05 13:20:39 +00:00
Evgeniy Stepanov 44b77c26e4 [msan] Allocator statistics interface and malloc hooks. 
llvm-svn: 187653
 2013-08-02 14:26:58 +00:00
Sergey Matveev 4e0215a71c Revert to C-style callbacks for iteration over allocator chunks. 
Also clean up LSan code, fix some comments and replace void* with uptr
to bring down the number of reinterpret_casts.

llvm-svn: 184700
 2013-06-24 08:34:50 +00:00
Sergey Matveev ecc4f5ba8e [lsan] Implement __lsan_ignore_object(). 
Leak annotation similar to HeapChecker's IgnoreObject().

llvm-svn: 183412
 2013-06-06 14:17:56 +00:00
Sergey Matveev 69f11803ec [lsan] Use the fast version of GetBlockBegin for leak checking in LSan and ASan. 
llvm-svn: 182994
 2013-05-31 11:13:45 +00:00
Kostya Serebryany 831a1d7cec [sanitizer] introduce LargeMmapAllocator::GetBlockBeginFastSingleThreaded, required for LeakSanitizer to work faster. Also fix lint. 
llvm-svn: 182917
 2013-05-30 08:43:30 +00:00
Timur Iskhodzhanov cc61eefd4b Fix MSVC W3 compiler warnings 
llvm-svn: 182857
 2013-05-29 14:11:44 +00:00
Kostya Serebryany 3469375e4f [sanitizer] factor out ByteMap from SizeClassAllocator32 so that it can be later replaced with a more memory-efficient implementation on 64-bit. 
llvm-svn: 182234
 2013-05-20 07:29:21 +00:00
Kostya Serebryany 21cbaee6a9 [sanitizer] fix gcc build 
llvm-svn: 182006
 2013-05-16 13:24:31 +00:00
Sergey Matveev efb6172cb3 [sanitizer] Fix the region overflow condition in SanitizerAllocator64::PopulateFreeList(). 
llvm-svn: 182002
 2013-05-16 12:58:34 +00:00
Kostya Serebryany 19eb46f4ca [sanitizer] fix a gcc warning 
llvm-svn: 181992
 2013-05-16 08:03:26 +00:00
Kostya Serebryany a551aaa944 [sanitizer] fix the GetBlockBegin overflow bug while preserving the performance optimization (use 32-bit division when possible). Improve the benchmarks that checks for performance of GetBlockBegin/GetMetaData 
llvm-svn: 181989
 2013-05-16 07:11:16 +00:00
Kostya Serebryany e6459977b8 [sanitizer] Fix boundary condition in LargeMmapAllocator::GetBlockBegin. Patch by Sergey Matveev 
llvm-svn: 179007
 2013-04-08 08:43:22 +00:00
Dmitry Vyukov 31056968fc asan/tsan: reduce per-thread memory allocator caches 
256 blocks (which is 512 in reallity) seems to be too big cache,
reducing the size reduces memory consumption but does not degrade performance.

llvm-svn: 177502
 2013-03-20 09:26:46 +00:00
Kostya Serebryany b941a2fca4 [asan] Add ForEachChunk() to sanitizer allocators. Patch by Sergey Matveev 
llvm-svn: 177147
 2013-03-15 11:39:41 +00:00
Kostya Serebryany d332d42372 [asan] remove one redundant malloc stress test, unify the usage of ASAN_LOW_MEMORY macro in tests, slightly reduce test memory usage (all to make 32-bit runs consume less RAM) 
llvm-svn: 177069
 2013-03-14 13:16:09 +00:00
Kostya Serebryany 138b155042 [sanitizer] use fewer size classes in the allocator to reduce the memory footprint. There is no all-size-fits-all constant here, but this change is positive or neutral on several large apps I've tested 
llvm-svn: 176855
 2013-03-12 08:44:40 +00:00
Kostya Serebryany ba56c8d4f9 [sanitizer] simplify the allocator's SizeClassMap: do not require an extra template parameter, instead compute it in flight. No functionality change 
llvm-svn: 176853
 2013-03-12 07:01:27 +00:00
Kostya Serebryany 0f5c20b417 [sanitizer] make SizeClassAllocator64::GetBlockBegin more bullet proof (by Sergey Matveev) 
llvm-svn: 176799
 2013-03-11 09:43:12 +00:00
Reid Kleckner 66c26e5e96 [sanitizers] Fix check failure on dealloc from new thread 
Summary:
Adds a test for this case, which was reduced from a chromium build of
WebKit's DumpRenderTree.

Reviewers: eugenis

CC: glider

Differential Revision: http://llvm-reviews.chandlerc.com/D495

llvm-svn: 176552
 2013-03-06 14:54:08 +00:00
Evgeniy Stepanov 323771b3f1 [sanitizer] Fix check failure in SizeClassMap::Print. 
llvm-svn: 176338
 2013-03-01 08:49:14 +00:00
Kostya Serebryany 459df6f167 [asan] a bit stricter lint for CHECK vs CHECK_XX (these CHECK_XX really help debugging!) 
llvm-svn: 176085
 2013-02-26 12:59:06 +00:00
Timur Iskhodzhanov 167f9e4395 [ASan] Switch Windows to allocator v2, also fixing some build errors 
llvm-svn: 174707
 2013-02-08 12:02:00 +00:00
Kostya Serebryany 39675fe9c8 [sanitizer] always allocate 16-byte aligned chunks of memory 
llvm-svn: 174617
 2013-02-07 15:04:06 +00:00
Alexander Potapenko 109aa04ea9 [sanitizer_common] Fix lint warnings. 
llvm-svn: 174616
 2013-02-07 14:58:04 +00:00
Alexander Potapenko 07c740e213 [ASan] Fix a compilation warning. 
llvm-svn: 174604
 2013-02-07 12:00:40 +00:00
Alexander Potapenko f444a49310 [ASan] Implement asan_mz_size(), asan_mz_force_lock() and asan_mz_force_unlock() for allocator2. 
Switch to allocator2 on Darwin.

llvm-svn: 174603
 2013-02-07 11:40:03 +00:00
Dmitry Vyukov 7981ea8baa asan/tsan: fix compilation errors/bugs on Windows where long is 32-bit even in 64-bit mode 
llvm-svn: 174312
 2013-02-04 08:07:45 +00:00
Timur Iskhodzhanov 6cff9deb16 Use the correct order of NOINLINE vs ret type to fix Windows build 
llvm-svn: 173694
 2013-01-28 17:29:50 +00:00
Kostya Serebryany fa79cd65e2 [sanitizer] fix calloc overflow in asan/tsan/msan 
llvm-svn: 173441
 2013-01-25 11:46:22 +00:00
Dmitry Vyukov 6e406cda4b tsan: implement malloc stats querying 
llvm-svn: 173332
 2013-01-24 09:08:03 +00:00
Kostya Serebryany 7206a145dd [sanitizer] increase the minimal mmap size in allocator to 2^16; fix the asan Mac build 
llvm-svn: 173261
 2013-01-23 14:07:17 +00:00
Dmitry Vyukov 45a698eb58 asan: faster thead-local cache for memory allocator 
llvm-svn: 172521
 2013-01-15 09:02:20 +00:00
Dmitry Vyukov 4ebb4e5565 asan/tsan: mmap shadow memory before allocating memory (otherwise other threads can access non yet allocated shadow) 
llvm-svn: 172395
 2013-01-14 10:49:11 +00:00
Dmitry Vyukov 38092f628b asan/tsan: fix memory allocator statistics 
llvm-svn: 172390
 2013-01-14 08:51:08 +00:00