627e2c0dd7
[Sanitizer] Add Symbolizer::AddHooks() and use it in TSan and MSan.
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Summary:
TSan and MSan need to know if interceptor was called by the
user code or by the symbolizer and use pre- and post-symbolization hooks
for that. Make Symbolizer class responsible for calling these hooks instead.
This would ensure the hooks are only called when necessary (during
in-process symbolization, they are not needed for out-of-process) and
save specific sanitizers from tracing all places in the code where symbolization
will be performed.
Reviewers: eugenis, dvyukov
Reviewed By: eugenis
CC: llvm-commits
Differential Revision: http://llvm-reviews.chandlerc.com/D2067
llvm-svn: 193807
2013-10-31 21:44:07 +00:00
78928c1d2a
[Sanitizer] Use SpinMutex for Symbolizer initialization (per dvyukov's suggestion)
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llvm-svn: 193697
2013-10-30 17:05:37 +00:00
590fe110f9
[Sanitizer] Revert r193501 and properly fix r193448
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llvm-svn: 193522
2013-10-28 16:31:39 +00:00
791e65dcfb
Overhaul the symbolizer interface.
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This moves away from creating the symbolizer object and initializing the
external symbolizer as separate steps. Those steps now always take place
together.
Sanitizers with a legacy requirement to specify their own symbolizer path
should use InitSymbolizer to initialize the symbolizer with the desired
path, and GetSymbolizer to access the symbolizer. Sanitizers with no
such requirement (e.g. UBSan) can use GetOrInitSymbolizer with no need for
initialization.
The symbolizer interface has been made thread-safe (as far as I can
tell) by protecting its member functions with mutexes.
Finally, the symbolizer interface no longer relies on weak externals, the
introduction of which was probably a mistake on my part.
Differential Revision: http://llvm-reviews.chandlerc.com/D1985
llvm-svn: 193448
2013-10-25 23:03:29 +00:00
c787d42f40
[nolibc] Move symbolizer to RTSanitizerCommonLibc, and make it optional using a weak symbol.
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llvm-svn: 182372
2013-05-21 12:08:37 +00:00
4b603e5c50
[sanitizer] Filtering in GetListOfModules.
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llvm-svn: 181791
2013-05-14 14:04:06 +00:00
7ad129277e
[Sanitizer] fix TSan tests: remove global ctor from sanitizer_common, run load_shared_lib test only in lit
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llvm-svn: 179090
2013-04-09 07:46:20 +00:00
9d28efc1ad
[asan] relax Linux/zero-base-shadow.cc to make it pass on newer Ubuntu; fix lint
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llvm-svn: 179088
2013-04-09 07:08:05 +00:00
32efd25b93
[libsymbolized] If we can't find an address in the list of shared libraries, try to reload it.
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Add a regression test for the case where such behavior helps TSan:
1. race is reported in the main module
2. new shared library is loaded
3. race is reported in the shared library
llvm-svn: 179032
2013-04-08 17:46:34 +00:00
2a4668557f
[Sanitizer] enquote the module name when passing it to external symbolizer
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llvm-svn: 178864
2013-04-05 11:54:23 +00:00
082afc8346
tsan: fix build
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llvm-svn: 177395
2013-03-19 13:34:12 +00:00
29f335ae80
tsan: symbolizer "flush caches" functinality
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llvm-svn: 177388
2013-03-19 10:23:17 +00:00
086b940b1e
[Sanitizer] Don't die if external symbolizer is used on Mac, where it's not implemented yet
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llvm-svn: 176091
2013-02-26 13:40:51 +00:00
7943b69002
tsan: add IsSymbolizerAvailable() function for querying for presence of internal/external symbolizer
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llvm-svn: 173783
2013-01-29 09:35:14 +00:00
971b0cd26f
[Sanitizer] use stub InternalSymbolizer on platforms where we don't have weak hooks
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llvm-svn: 173347
2013-01-24 14:01:59 +00:00
8db4077583
[Sanitizer] Add skeleton for InternalSymbolizer that can be used by providing callbacks __sanitizer_symbolize_{code,data}
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llvm-svn: 173344
2013-01-24 13:42:45 +00:00
5cb6c62641
tsan: symbolize global variables
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llvm-svn: 172181
2013-01-11 07:23:51 +00:00
e982a1d368
tsan: describe global vars (module+offset for now)
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llvm-svn: 169122
2012-12-03 11:45:34 +00:00
68791d162a
[Sanitizer] symbolizer: increase the maximal number of shared libraries to 16K
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llvm-svn: 166098
2012-10-17 13:12:23 +00:00
3ebf2fa654
[Sanitizer] remove unused field
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llvm-svn: 163296
2012-09-06 08:47:38 +00:00
ceffb021c5
[Sanitizer] Remove implicit conversion of InternalScopedBuffer<T> to T*
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llvm-svn: 163197
2012-09-05 07:23:44 +00:00
6f696f4d17
[Sanitizer] Support for reading inlined frames from llvm-symbolizer
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llvm-svn: 163140
2012-09-04 15:34:43 +00:00
3222dad6e3
[Sanitizer] fix overloaded operator error
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llvm-svn: 162990
2012-08-31 11:43:01 +00:00
e70ed73d1f
[Sanitizer] Remove some calls to libc malloc from symbolizer
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llvm-svn: 162987
2012-08-31 11:07:52 +00:00
419f610a74
[Sanitizer] Switch the symbolization strategy that would be used by sanitizer tools family: as compiling in-process symbolizer into runtime involves certain difficulties, we may instead launch an external symbolizer program (fork + execl) in a subprocess and communicate with it via pipe.
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llvm-svn: 162437
2012-08-23 07:32:06 +00:00
500e99639d
[Sanitizer] Wrapper around llvm::DIContext from LLVM DebugInfo library. If a macro SANITIZER_USES_LLVM_LIBS is defined (by default it is not), then sanitizer runtime includes llvm headers and tries to use LLVM libs for in-process symbolization. To make it functional, we have to link with these LLVM libs - either pass them to linker from Clang driver, or link them into static ASan runtime when we build it.
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llvm-svn: 161045
2012-07-31 11:51:26 +00:00
7acdc1738f
[Sanitizer] When obtaining the data for loaded modules, add address ranges of loadable segments only. Looks like address range of PT_TLS segment may intersect with loadable segments of other modules.
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llvm-svn: 160498
2012-07-19 07:51:20 +00:00
961276af26
[Sanitizer] Extend a symbolizer code. Implemented for Linux only. Use dl_iterate_phdr to get virtual addresses of mapped module sections. To symbolize an address from a module, map this module to memory and obtain pointers to debug info sections. Later these pointers can be passed to constructor of DWARF context-in-memory from LLVM DebugInfo lib.
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llvm-svn: 159652
2012-07-03 08:24:14 +00:00
0d76e8983f
[Sanitizer] Use ProcessMaps in symbolizer to get module name and offset for instruction address
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llvm-svn: 158522
2012-06-15 14:00:25 +00:00
3a6ddb86e8
[Sanitizer] Allocator for internal runtime purposes. Currently it calls libcmalloc, but we might have to make it more low-level in future
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llvm-svn: 158142
2012-06-07 08:52:56 +00:00
3b2f9f4c98
Remove file-type tags in .cc files in tsan/ and sanitizer_common/
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llvm-svn: 157928
2012-06-04 13:55:19 +00:00
c1971ca12f
[Sanitizer_common] fix filenames in comments
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llvm-svn: 157919
2012-06-04 09:33:06 +00:00
cad2e4e6c2
temporary include stdlib.h in symbolizer to fix Mac/Win build
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llvm-svn: 157808
2012-06-01 07:41:47 +00:00
6f596767c3
Stub files for common symbolizer for AddressSanitizer and ThreadSanitizer tools.
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It is an analogue of addr2line utility and should allow to map instruction address to a location
in source code at run-time. It should use debug information (in DWARF) in a binary, and hopefully
it would be possible to re-use code from llvm/DebugInfo/DIContext.h
llvm-svn: 157806
2012-06-01 06:11:13 +00:00
Alexey Samsonov