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40 Commits

Author SHA1 Message Date
Alexey Samsonov 23347de6ef [Sanitizer] Add Symbolizer::GetModuleNameAndOffsetForPC() and use it in LSan suppression matching. 
This allows us to avoid retrieving file/line info for suppressed modules.

llvm-svn: 198025
 2013-12-25 20:15:46 +00:00
Alexey Samsonov 6322e036aa [Sanitizer] Replace Symbolizer::IsAvailable and Symbolizer::IsExternalAvailable with Symbolizer::CanReturnFileLineInfo. 
Remove now redundant checks in symbolizer initialization in TSan and MSan.

llvm-svn: 198000
 2013-12-25 07:09:44 +00:00
Timur Iskhodzhanov 1c84bd64db [Sanitizer] Implement Symbolizer class on Windows 
llvm-svn: 197571
 2013-12-18 14:29:16 +00:00
Timur Iskhodzhanov b5f983e4b0 [Sanitizers] Rename Symbolizer::SymbolizeCode to Symbolizer::SymbolizePC 
llvm-svn: 197569
 2013-12-18 14:17:39 +00:00
Alexey Samsonov 25d010a98d [Sanitizer] Always initialize a Symbolizer (even if 'symbolize' is false). 
If 'symbolize' flag is not set, we still want to transform virtual address
to module+offset pair in the call to Symbolizer::SymbolizeCode().
See https://code.google.com/p/address-sanitizer/issues/detail?id=251 for
more details.

llvm-svn: 197491
 2013-12-17 11:15:39 +00:00
Alexey Samsonov 627e2c0dd7 [Sanitizer] Add Symbolizer::AddHooks() and use it in TSan and MSan. 
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
Alexey Samsonov 3c845b6f1b [Sanitizer] Update comment in sanitizer_symbolizer.h 
llvm-svn: 193700
 2013-10-30 17:17:35 +00:00
Alexey Samsonov 78928c1d2a [Sanitizer] Use SpinMutex for Symbolizer initialization (per dvyukov's suggestion) 
llvm-svn: 193697
 2013-10-30 17:05:37 +00:00
Peter Collingbourne 791e65dcfb Overhaul the symbolizer interface. 
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
Daniel Jasper 333e0cb055 Revert r190520 as it wasn't the right fix. 
llvm-svn: 190524
 2013-09-11 12:53:04 +00:00
Daniel Jasper 2b3f143f23 Add empty virtual destructor... 
... as this otherwise triggers -Wnon-virtual-dtor.

llvm-svn: 190520
 2013-09-11 12:28:15 +00:00
Alexey Samsonov 7a36e6126b [Sanitizer] Refactor symbolization interface: use class instead of several functions. Move some code around to get rid of extra source files 
llvm-svn: 190410
 2013-09-10 14:36:16 +00:00
Alexey Samsonov 5b5c99d219 ASan, LSan, MSan: try to find llvm-symbolizer binary in PATH if it is not provided. Now we don't need to explicitly set the location of llvm-symbolizer in lit test configs. 
llvm-svn: 189801
 2013-09-03 13:22:51 +00:00
Timur Iskhodzhanov eee13914e2 Define SANITIZER_INTERFACE_ATTRIBUTE on Windows and fix all the places where SANITIZER_INTERFACE_ATTRIBUTE or SANITIZER_ATTRIBUTE_WEAK are used 
llvm-svn: 188261
 2013-08-13 11:42:45 +00:00
Alexey Samsonov 6a5b0758ec Demangle names using pluggable internal symbolizer if possible 
llvm-svn: 185146
 2013-06-28 12:30:24 +00:00
Alexey Samsonov c8e7364763 [Sanitizer] support running external llvm-symbolizer on Mac 
llvm-svn: 183730
 2013-06-11 08:13:36 +00:00
Peter Collingbourne 112e5ba281 [nolibc] Unweak SymbolizerPrepareForSandboxing and move it to libc-independent part. 
Fixes the Go build.

Differential Revision: http://llvm-reviews.chandlerc.com/D877

llvm-svn: 182851
 2013-05-29 12:11:43 +00:00
Peter Collingbourne fb1a9f17e3 [nolibc] Make SymbolizerPrepareForSandboxing weak and optional. 
Differential Revision: http://llvm-reviews.chandlerc.com/D872

llvm-svn: 182765
 2013-05-28 11:05:05 +00:00
Peter Collingbourne 5b2669049a [nolibc] Make AddressInfo::Clear a weak function. 
llvm-svn: 182743
 2013-05-27 21:00:36 +00:00
Alexander Potapenko 6535f510a3 [ASan] Introduce SymbolizerPrepareForSandboxing(), which is a no-op on every platform except Linux (because we don't support sandboxing anywhere else yet) 
On Linux we pre-cache the value of readlink("/proc/self/exe"), so that it can be later used when the sandbox has been turned on.

llvm-svn: 182579
 2013-05-23 11:53:36 +00:00
Peter Collingbourne c787d42f40 [nolibc] Move symbolizer to RTSanitizerCommonLibc, and make it optional using a weak symbol. 
llvm-svn: 182372
 2013-05-21 12:08:37 +00:00
Kostya Serebryany 2b42716213 [asan] fix powerpc build and one test; fix lint 
llvm-svn: 181881
 2013-05-15 12:36:29 +00:00
Sergey Matveev 4b603e5c50 [sanitizer] Filtering in GetListOfModules. 
llvm-svn: 181791
 2013-05-14 14:04:06 +00:00
Dmitry Vyukov 29f335ae80 tsan: symbolizer "flush caches" functinality 
llvm-svn: 177388
 2013-03-19 10:23:17 +00:00
Dmitry Vyukov 7943b69002 tsan: add IsSymbolizerAvailable() function for querying for presence of internal/external symbolizer 
llvm-svn: 173783
 2013-01-29 09:35:14 +00:00
Dmitry Vyukov 5cb6c62641 tsan: symbolize global variables 
llvm-svn: 172181
 2013-01-11 07:23:51 +00:00
Richard Smith 64e25ce53d Move C++ name demangling support from ubsan into sanitizer_common. 
llvm-svn: 170666
 2012-12-20 05:00:13 +00:00
Dmitry Vyukov e982a1d368 tsan: describe global vars (module+offset for now) 
llvm-svn: 169122
 2012-12-03 11:45:34 +00:00
Alexey Samsonov 68791d162a [Sanitizer] symbolizer: increase the maximal number of shared libraries to 16K 
llvm-svn: 166098
 2012-10-17 13:12:23 +00:00
Alexey Samsonov 3ebf2fa654 [Sanitizer] remove unused field 
llvm-svn: 163296
 2012-09-06 08:47:38 +00:00
Alexey Samsonov 6f696f4d17 [Sanitizer] Support for reading inlined frames from llvm-symbolizer 
llvm-svn: 163140
 2012-09-04 15:34:43 +00:00
Alexey Samsonov 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. 
llvm-svn: 162437
 2012-08-23 07:32:06 +00:00
Alexey Samsonov 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. 
llvm-svn: 161045
 2012-07-31 11:51:26 +00:00
Alexey Samsonov 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. 
llvm-svn: 160498
 2012-07-19 07:51:20 +00:00
Alexey Samsonov 38b1ec4317 [ASan] Add a default constructor for DWARFSection to initialize it with zeros. 
llvm-svn: 159748
 2012-07-05 14:28:37 +00:00
Alexey Samsonov 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. 
llvm-svn: 159652
 2012-07-03 08:24:14 +00:00
Alexey Samsonov 0d76e8983f [Sanitizer] Use ProcessMaps in symbolizer to get module name and offset for instruction address 
llvm-svn: 158522
 2012-06-15 14:00:25 +00:00
Alexey Samsonov 5bbf8290a7 [Sanitizer] rename sanitizer_defs.h to sanitizer_internal_defs.h 
llvm-svn: 158001
 2012-06-05 14:25:27 +00:00
Alexey Samsonov c1971ca12f [Sanitizer_common] fix filenames in comments 
llvm-svn: 157919
 2012-06-04 09:33:06 +00:00
Alexey Samsonov 6f596767c3 Stub files for common symbolizer for AddressSanitizer and ThreadSanitizer tools. 
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