756e1c1e4b
[asan] Reinitialize allocator quarantine on activation.
...
This is covered by AddressSanitizer.UAF_* tests in asan_test
with start_deactivated=1.
llvm-svn: 200696
2014-02-03 14:19:08 +00:00
123994c4a6
[asan] use correct type when computing shadow address in allocator (caused SEGV when asan run-time is built with gcc 4.8.2 on 32-bit arch)
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llvm-svn: 199544
2014-01-18 09:38:31 +00:00
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
2b76278d38
[lsan] handle 'new T[0]' where T is a type with DTOR; fixes https://code.google.com/p/address-sanitizer/issues/detail?id=257
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llvm-svn: 198932
2014-01-10 10:48:01 +00:00
219719a2da
[asan] Implement max_redzone runtime flag.
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llvm-svn: 198873
2014-01-09 14:41:03 +00:00
2b5fddbc75
[asan] allow asan to use SizeClassAllocator32 on a 64-bit platform (if SANITIZER_CAN_USE_ALLOCATOR64=0). No functionality change by default is intended
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llvm-svn: 198044
2013-12-26 13:52:38 +00:00
e55d388e71
[asan] when a fake stack is being unmapped also flush the corresponding shadow
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llvm-svn: 197040
2013-12-11 14:26:41 +00:00
9ff4598225
[ASan] Do not rely on malloc context in allocator reports.
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Invoke a fatal stack trace unwinder when ASan prints allocator-relevant
error reports (double-free, alloc-dealloc-mismatch, invalid-free).
Thus we'll be able to print complete stack trace even if allocation/free
stacks are not stored (malloc_context_size=0).
Based on the patch by Yuri Gribov!
llvm-svn: 194579
2013-11-13 14:46:58 +00:00
c5e1b16d0c
[ASan] Kill use_stack_depot runtime flag and stack trace compression routines.
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llvm-svn: 193868
2013-11-01 17:23:22 +00:00
2a9b70cb4c
[asan] increase the max malloc size from 8Gb to 64Gb
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llvm-svn: 193615
2013-10-29 15:16:54 +00:00
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
442c4e4b1a
[asan] introduce run-time flag 'poison_partial'
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llvm-svn: 192793
2013-10-16 13:49:01 +00:00
df6e6569c0
[ASan] Don't die with internal ASan error on large buffer overflows
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Summary:
Out-of-bound access may touch not-yet allocated or already freed
and recycled from quarantine chunks. We should treat this situation as
a "free-range memory access" and avoid printing any data about that
irrelevant chunk (which may be inconsistent).
This should fix https://code.google.com/p/address-sanitizer/issues/detail?id=183
Reviewers: kcc
Reviewed By: kcc
CC: timurrrr, llvm-commits
Differential Revision: http://llvm-reviews.chandlerc.com/D1893
llvm-svn: 192581
2013-10-14 11:13:54 +00:00
c947eb08b5
[ASan] Don't add SANITIZER_INTERFACE_ATTRIBUTE for internal ASan functions
...
llvm-svn: 190860
2013-09-17 09:42:03 +00:00
e009ef4ac1
[asan] make calloc crash instead of returning 0 on overflow (controlled by the allocator_may_return_null flag)
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llvm-svn: 190128
2013-09-06 09:51:50 +00:00
ada5a7b7ef
[sanitizer] make the allocator crash instead of returning 0 on huge size (controlled by the allocator_may_return_null flag)
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llvm-svn: 190127
2013-09-06 09:25:11 +00:00
eee13914e2
Define SANITIZER_INTERFACE_ATTRIBUTE on Windows and fix all the places where SANITIZER_INTERFACE_ATTRIBUTE or SANITIZER_ATTRIBUTE_WEAK are used
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llvm-svn: 188261
2013-08-13 11:42:45 +00:00
4e0215a71c
Revert to C-style callbacks for iteration over allocator chunks.
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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
38fa1ff710
[lsan] Try REALLY hard to fix Win build.
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llvm-svn: 184557
2013-06-21 15:50:49 +00:00
b94d5e2d1c
[asan] Move lsan_disabled out of thread context.
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Fix for the case where disabler is used in pthread key destructor.
llvm-svn: 184553
2013-06-21 14:51:52 +00:00
5e6b9eccce
[asan] Define LSan annotations as no-ops if leak detection is not supported.
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llvm-svn: 184422
2013-06-20 13:39:42 +00:00
686c229b03
[ASan] Clear allocation magic value before recycling the chunk. This led to spurious crashes in LSan when it walked through reused chunks. Don't know how to create not-brittle test case for this.
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llvm-svn: 184404
2013-06-20 08:13:06 +00:00
978460c12c
[lsan] Harmonized some naming inconsistencies.
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llvm-svn: 183748
2013-06-11 15:26:20 +00:00
02062becea
[asan] fix Android build (mark asan_malloc_usable_size as an interface function)
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llvm-svn: 183651
2013-06-10 13:28:33 +00:00
e71982d589
[asan] fix the bug with memalign and malloc_usable_size ( http://code.google.com/p/address-sanitizer/issues/detail?id=193 ); also fix lint
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llvm-svn: 183647
2013-06-10 10:46:27 +00:00
1c4e214c32
[lsan] Put SANITIZER_INTERFACE_ATTRIBUTE on LSan interface functions.
...
llvm-svn: 183429
2013-06-06 18:40:55 +00:00
ecc4f5ba8e
[lsan] Implement __lsan_ignore_object().
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Leak annotation similar to HeapChecker's IgnoreObject().
llvm-svn: 183412
2013-06-06 14:17:56 +00:00
7a75e16c27
[ASan] One more fix for realloc: check that reallocated chunk is valid before calling memcpy
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llvm-svn: 183390
2013-06-06 08:25:31 +00:00
8f5138a23f
Call __asan_free_hook() before marking the chunk quarantinned
...
Summary:
With this change, the user may safely call __asan_get_ownership()
from malloc/free hooks and assume it would return "true". If there is a
realloc/free race, free hook might be called twice, but I think it's acceptable,
as it's a data race and would later be reported anyway.
This change also fixes a bug when failing realloc incorrectly marked the
original memory as "quarantinned".
Reviewers: timurrrr, kcc, samsonov
Reviewed By: samsonov
CC: llvm-commits
Differential Revision: http://llvm-reviews.chandlerc.com/D913
llvm-svn: 183220
2013-06-04 12:19:31 +00:00
b256ac7584
[asan] Fix invalid thread registry access when checking if LSan is disabled.
...
llvm-svn: 183218
2013-06-04 10:39:24 +00:00
17ee1abfa7
[lsan] Add __lsan_disable() and __lsan_enable().
...
Objects allocated after a call to __lsan_disable() will be treated as
live memory. Also add a ScopedDisabler.
llvm-svn: 183099
2013-06-03 11:21:34 +00:00
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
39e8a6d87e
[lsan] Begin converting LSan tests to output tests.
...
In this CL all old tests are removed and one LIT test is added.
llvm-svn: 182730
2013-05-27 11:41:46 +00:00
49eb5700e2
Revert r182465 and add lsan-common library to makefile-based build
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llvm-svn: 182470
2013-05-22 13:20:37 +00:00
155dd46e04
[ASan] Temporary remove leak checking from ASan, while we don't have makefile-based build for LSan
...
llvm-svn: 182465
2013-05-22 12:44:57 +00:00
7159b2a382
[asan] LSan hooks in asan_allocator2.cc
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llvm-svn: 182379
2013-05-21 13:46:41 +00:00
67c918a424
Fix realloc'ing freed/invalid pointers
...
See https://code.google.com/p/address-sanitizer/issues/detail?id=187 for the details
llvm-svn: 182255
2013-05-20 13:05:58 +00:00
6a6c5b6dee
[asan] Modify ASan metadata atomically.
...
We need this to avoid races when ASan and LSan are used together.
llvm-svn: 182252
2013-05-20 11:25:18 +00:00
667cae7b69
[ASan] Remove an unused ChunkBase field
...
Also fix wrong alignment maths and an outdated comment
llvm-svn: 182238
2013-05-20 08:20:17 +00:00
3469375e4f
[sanitizer] factor out ByteMap from SizeClassAllocator32 so that it can be later replaced with a more memory-efficient implementation on 64-bit.
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llvm-svn: 182234
2013-05-20 07:29:21 +00:00
836a4f3643
Replace CHECK(a == b); with CHECK_EQ(a, b); throughout asan_allocator2.cc
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llvm-svn: 182198
2013-05-18 18:27:33 +00:00
2b42716213
[asan] fix powerpc build and one test; fix lint
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llvm-svn: 181881
2013-05-15 12:36:29 +00:00
0c8ed9ce44
[asan] Common flags in ASan.
...
Some flags that are common to ASan/MSan/TSan/LSan have been moved to
sanitizer_common.
llvm-svn: 181193
2013-05-06 11:27:58 +00:00
eef8bd4355
[asan] nuke the old unused allocator code
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llvm-svn: 178758
2013-04-04 11:32:49 +00:00
13b07733b1
[asan] fill first 4K of malloc-ed memory with garbage, implement flags max_malloc_fill_size and malloc_fill_byte
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llvm-svn: 178757
2013-04-04 11:17:14 +00:00
a88c60b085
[ASan] Speed-up initialization-order checking: create and use fast versions of PoisonShadow functions, store copies of __asan_global descriptors in a vector instead of list of pointers. This gives 3x speedup on both benchmarks and real binaries with lots of globals.
...
llvm-svn: 178239
2013-03-28 15:42:43 +00:00
fb74020cea
Revert 177745 as it was incorrect
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llvm-svn: 177746
2013-03-22 18:16:57 +00:00
e117eef77f
Band-aid fix for the Windows build caused by r177710. Long-term, atomic_compare_exchange_strong should be a template on Windows too...
...
llvm-svn: 177745
2013-03-22 18:05:28 +00:00
a5eb3cb721
[ASan] Fix an error on invalid deallocation in ASan allocator. When ASan checks if memory freed by user was indeed previously allocated, it first does an atomic write to presumed location of chunk header. This is wrong, as if the free is invalid, we may overwrite some valuable data (like other fields of the chunk header). Fix this by using atomic_compare_exchange instead.
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llvm-svn: 177710
2013-03-22 07:40:34 +00:00
54afba8b62
[ASan] Switch ASan to generic ThreadRegistry from sanitizer_common. Delete ASan-specific AsanThreadRegistry.
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llvm-svn: 177634
2013-03-21 11:23:41 +00:00
Evgeniy Stepanov