cae42d23a6
[ASan] Use dylib interposition to hook memory allocation in the dynamic runtime.
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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
3674c6b13b
[asan] add a flag alloc_dealloc_mismatch (off by default for now) which finds malloc/delete, new/free, new/delete[], etc mismatches
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llvm-svn: 170869
2012-12-21 08:53:59 +00:00
6852bce2f2
[asan] fix mac build
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llvm-svn: 170118
2012-12-13 10:01:20 +00:00
baf583c443
[asan] add two asan flags: fast_unwind_on_fatal and fast_unwind_on_malloc to allow using the slow CFI-based unwinder
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llvm-svn: 170117
2012-12-13 09:34:23 +00:00
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.
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llvm-svn: 168517
2012-11-23 15:38:49 +00:00
1eef2b813c
[ASan] Rename ReplaceCFAllocator to MaybeReplaceCFAllocator.
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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
83ecabe6e6
[Sanitizer] Remove unneeded returns after UNIMPLEMENTED macro
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llvm-svn: 165493
2012-10-09 08:51:08 +00:00
f3a96894a6
Give more accurate malloc statistics to malloc_zone_statistics().
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Fix a warning in macros instantiation.
llvm-svn: 163716
2012-09-12 15:29:50 +00:00
4787d0fbef
[ASan] more macro/casting magic to suppress warnings
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llvm-svn: 163706
2012-09-12 14:10:14 +00:00
814451909a
Initial support for malloc_zone_statistics. All counters are set to zero now.
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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
5a9b616d6b
For invalid pointers passed to free_common check whether they are actually skewed to hold an additional CFAllocatorRef.
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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
bb6f165952
[asan] get rid of AsanPrintf in favor of Printf from sanitizer_common
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llvm-svn: 162746
2012-08-28 11:34:40 +00:00
c62210e3ff
Commit the source and CMake changes that will allow to build ASan runtime
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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
33c028fa05
Remove the setjmp.h dependency, fix the comment.
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llvm-svn: 161662
2012-08-10 12:46:39 +00:00
2cdd4f165e
Temporary fix for http://code.google.com/p/address-sanitizer/issues/detail?id=99 :
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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
f343eb7df4
[ASan] Move mac-specific error reports to asan_report.cc as well
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llvm-svn: 161576
2012-08-09 12:15:40 +00:00
51e6488b31
Intercept CFAllocator for each thread in the program.
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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
34efb8e9b9
[ASan] Use common flags parsing machinery.
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llvm-svn: 159933
2012-07-09 14:36:04 +00:00
740d166c3e
Small fix: do not replace the default CFAllocator if it has been replaced already.
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llvm-svn: 159824
2012-07-06 13:52:28 +00:00
dc211a8db4
Because CFAllocatorCreate() should also be called after __CFInitialize() on Lion,
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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
89f9270366
A portable way to check whether __CFInitialize has been called: compare kCFAllocatorSystemDefault._base._cfisa to 0.
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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
d2ff0b087a
Do not check for __CFRuntimeClassTableSize on non-10.6 systems, where this symbol is private.
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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
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.
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llvm-svn: 159749
2012-07-05 14:46:56 +00:00
77769caaef
Do not call malloc_zone_from_ptr() for the pointers passed to mz_size() and mz_free().
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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
1bde28b464
Factor the common code out of cf_free and mz_free.
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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
f9f2fbacb3
Actually intercept free() to ensure that the deallocations caused by other functions directly calling it are routed to our allocator.
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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
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).
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llvm-svn: 158065
2012-06-06 13:11:29 +00:00
485d3dc363
Remove file-type tags for .cc files in ASan run-time library
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llvm-svn: 157927
2012-06-04 13:50:10 +00:00
8d03204204
[asan] more renaming
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llvm-svn: 157746
2012-05-31 14:35:53 +00:00
c6eb6a8287
Add internal_memset and replace the uses of REAL(memset) with it where the performance allows.
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llvm-svn: 153641
2012-03-29 12:20:47 +00:00
e781266905
Make sure to properly ifdef out an unused function on OSX < 10.6. PR12136. Patch from Jeremy Huddleston.
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llvm-svn: 152085
2012-03-06 01:21:14 +00:00
8489f2a564
AddressSanitizer: start factoring out interception machinery
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llvm-svn: 150083
2012-02-08 19:52:01 +00:00
e725478e2f
AddressSanitizer: replace all "real_X" calls with "REAL(X)"
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llvm-svn: 150073
2012-02-08 13:45:31 +00:00
209c514a1d
AddressSanitizer: add support for malloc_usable_size() function
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llvm-svn: 148287
2012-01-17 06:39:10 +00:00
fc4a4a3cbc
asan: #if 0 out some unused functions (we build with -Werror).
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llvm-svn: 145645
2011-12-01 23:35:47 +00:00
5dfa4da0b9
[asan] flatten the asan-rt build slightly
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llvm-svn: 145631
2011-12-01 21:40:52 +00:00
019b76f5fd
AddressSanitizer run-time library. Not yet integrated with the compiler-rt build system, but can be built using the old makefile. See details in README.txt
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llvm-svn: 145463
2011-11-30 01:07:02 +00:00
Alexander Potapenko