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106 Commits

Author SHA1 Message Date
Alexey Samsonov 2f392d237c [Sanitizer] Move OS-specific code for MemoryMappingLayout into separate source files. 
llvm-svn: 198003
 2013-12-25 08:01:16 +00:00
Kostya Serebryany 82d0679e92 [asan] attempting to fix x32 build (see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59018) 
llvm-svn: 194155
 2013-11-06 17:47:39 +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
Peter Collingbourne b745eec4e4 Use internal_memset to initialize this variable. 
Otherwise, the compiler may use memset in non-optimized builds, which is
forbidden in the nolibc part of the runtime.

llvm-svn: 193098
 2013-10-21 18:11:57 +00:00
Dmitry Vyukov f54835f768 tsan: move kernel struct definition from sanitizer_linux.h to sanitizer_platform_limits_posix.h 
llvm-svn: 192695
 2013-10-15 12:57:59 +00:00
Dmitry Vyukov 59c850de6d tsan: implement internal syscall-based versions of sigaction/sigprocmask 
use them in stoptheworld
fixes applications that intercept sigaction/sigprocmask

llvm-svn: 192686
 2013-10-15 11:31:51 +00:00
Sergey Matveev 398fb700a2 [sanitizer] Do not break the CFI unwind chain in clone(). 
Fixes build on clang 3.2, which doesn't support cfi_undefined. This change
doesn't seem to break the slow unwinder. Even if it does, the worst thing that
could happen is that we would not see a backtrace when a fatal error happens
under StopTheWorld.

llvm-svn: 192196
 2013-10-08 16:38:39 +00:00
Nick Lewycky 885136d3b6 Check the function we just called for errors, not an incoming argument. Noticed 
by inspection.

llvm-svn: 190828
 2013-09-17 00:23:28 +00:00
Alexey Samsonov 4a2447fd81 [TSan] Use --whole-archive around TSan runtime in old TSan makefiles. Fix a Go build 
llvm-svn: 190513
 2013-09-11 11:06:06 +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
Alexander Potapenko 94377c337b [libsanitizer] Remove an unused variable introduced in r189789 
llvm-svn: 189790
 2013-09-03 11:30:07 +00:00
Alexander Potapenko 7e1c51988d [TSan] Move the /proc/self/maps parsing logic to sanitizer_common 
Provide a generic way for the tools to generate memory profiles from contents of /proc/self/maps

llvm-svn: 189789
 2013-09-03 11:09:16 +00:00
Sergey Matveev 69931c5841 [sanitizer_common] Add internal_clone(). 
Add a wrapper for the clone syscall for use in StopTheWorld. We
implement it only for x86_64, so stop building StopTheWorld for other platforms
(no one uses it outside x86_64 anyway).

See https://code.google.com/p/address-sanitizer/issues/detail?id=214 for why we
can't use the glibc clone() wrapper.

llvm-svn: 189753
 2013-09-02 11:36:19 +00:00
Peter Collingbourne de8e3a097c Conditionalise inclusion of link.h on !SANITIZER_ANDROID. 
Hopefully fixes the Android build.

Differential Revision: http://llvm-reviews.chandlerc.com/D1551

llvm-svn: 189696
 2013-08-30 20:50:12 +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
Evgeniy Stepanov 573ba3499e [sanitizer] Disable ForEachMappedRegion on Android. 
It needs interface that is missing from the NDK, and it is not used on Android anyway.

llvm-svn: 187407
 2013-07-30 08:39:16 +00:00
Peter Collingbourne e572e17a8e Fix warning. 
llvm-svn: 187373
 2013-07-29 20:13:41 +00:00
Peter Collingbourne 9058c07c95 Move UnpoisonMappedDSO to sanitizer_common. 
This is so DFSan will be able to use it.

Differential Revision: http://llvm-reviews.chandlerc.com/D1206

llvm-svn: 187372
 2013-07-29 19:09:49 +00:00
Dmitry Vyukov 46cbc2ed50 tsan: fix unitialized read warning under newer gcc (it does not have visibility into asm) 
llvm-svn: 186495
 2013-07-17 06:56:47 +00:00
Kostya Serebryany 3a7c6d689d [asan] workaround for the quemu bug in proc maps (http://code.google.com/p/address-sanitizer/issues/detail?id=160) 
llvm-svn: 182922
 2013-05-30 11:00:08 +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
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
Kostya Serebryany b1333fe831 [sanitizer] fix asan on the platforms where the page size is not a compile-time constant (or at least where EXEC_PAGESIZE may not be trustworthy), e.g. powerpc64. 
llvm-svn: 182351
 2013-05-21 06:15:50 +00:00
Peter Collingbourne b69b8a4a8f [nolibc] Move GetPageSize to the individual platforms. 
GetPageSize wraps sysconf(_SC_PAGESIZE) on POSIX platforms, but
sysconf resides in libc.  To make this libc-independent on Linux,
move the wrapper to sanitizer_mac.cc and return the Linux-specific
constant EXEC_PAGESIZE in the sanitizer_linux.cc implementation.

llvm-svn: 182303
 2013-05-20 17:05:29 +00:00
Peter Collingbourne 0c8df4e1d8 [nolibc] Move libc-dependent sanitizer_linux.cc code to sanitizer_linux_libcdep.cc. 
llvm-svn: 182292
 2013-05-20 15:57:44 +00:00
Peter Collingbourne d5169edc36 [nolibc] Make GetArgsAndEnv libc-independent. 
__libc_stack_end is made into a weak symbol if possible.  If libc is
not linked, read args and environment from /proc.

llvm-svn: 182276
 2013-05-20 14:25:32 +00:00
Sergey Matveev af05543c86 [sanitizer] LibraryNameIs in sanitizer_linux 
llvm-svn: 181787
 2013-05-14 13:24:46 +00:00
Peter Collingbourne 6f4be19b57 [nolibc] Change internal syscall API to remove reliance on libc's errno. 
This change moves to a model where the error value of a system call is
potentially contained in the return value itself rather than being
implicit in errno.  The helper function internal_iserror can be used
to extract the error value from a return value.  On platforms other
than Linux/x86_64 this still uses errno, but other platforms are free
to port their error handling to this new model.

Differential Revision: http://llvm-reviews.chandlerc.com/D756

llvm-svn: 181436
 2013-05-08 14:43:49 +00:00
Sergey Matveev 3704453368 [sanitizer] Fixed InitTlsSize for Android. 
llvm-svn: 181330
 2013-05-07 16:29:26 +00:00
Sergey Matveev 88d0c664ef [sanitizer] Fixed includes in sanitizer_linux.cc for Android. 
llvm-svn: 181327
 2013-05-07 15:38:53 +00:00
Sergey Matveev 954c6ef10f [sanitizer] Move GetThreadStackAndTls from TSan to sanitizer_common. 
Move this function to sanitizer_common because LSan uses it too. Also, fix a bug
where the TLS range reported for main thread was off by the size of the thread
descriptor from libc (TSan doesn't care much, but for LSan it's critical).

llvm-svn: 181322
 2013-05-07 14:41:43 +00:00
Evgeniy Stepanov 517118e6b4 [sanitizer] Sanitizer __internal_*stat interface. 
With this change, __internal_*stat always expect a "struct stat *" argument.
This avoids stat/stat64 caller-side confusion (sanitizer_common tests already
made this mistake), and allows the use of __internal_fstat() as a drop-in
replacement for libc's fstat().

llvm-svn: 181311
 2013-05-07 12:47:04 +00:00
Sergey Matveev b2151b8200 Revert r180599 "[sanitizer] Clear LD_PRELOAD when forking an external symbolizer." 
llvm-svn: 180602
 2013-04-26 13:01:40 +00:00
Sergey Matveev 3c8fbe1013 [sanitizer] Clear LD_PRELOAD when forking an external symbolizer. 
llvm-svn: 180599
 2013-04-26 11:35:05 +00:00
Alexey Samsonov f36c5a8431 Revert r180082 and add a test for SetEnv function 
llvm-svn: 180098
 2013-04-23 12:49:12 +00:00
Alexey Samsonov e7540e3561 [Sanitizer] Delete unused function 
llvm-svn: 180082
 2013-04-23 08:18:09 +00:00
Alexey Samsonov 46b8665ea4 Remove InternalAlloc/InternalFree calls from StopTheWorld. Patch by Sergey Matveev. 
llvm-svn: 178855
 2013-04-05 07:41:21 +00:00
Alexey Samsonov a0e28a7aaa [Sanitizer] Kill the remainders of platform defines in favor of SANITIZER_ defines 
llvm-svn: 178627
 2013-04-03 07:24:35 +00:00
Alexander Potapenko f8109dd0f8 [libsanitizer] Unmapping the old cache partially invalidates the memory layout, so add 
a flag to skip cache update for cases when that's unacceptable (e.g. lsan).

Patch by Sergey Matveev (earthdok@google.com)

llvm-svn: 178000
 2013-03-26 10:34:37 +00:00
Dmitry Vyukov 510ad11800 tsan: add SetEnv() function that can be used in frontends 
llvm-svn: 177857
 2013-03-25 09:56:45 +00:00
Dmitry Vyukov 78693730a4 tsan: use a single background thread for memory profiler and memory flush (and later for symbolizer flush) 
llvm-svn: 177627
 2013-03-21 06:24:31 +00:00
Dmitry Vyukov b6eace8a2f tsan: add internal_unlink() function 
llvm-svn: 177510
 2013-03-20 10:28:36 +00:00
Evgeniy Stepanov 0af672326a [sanitizer] Replace more platform checks with SANITIZER_ constants. 
llvm-svn: 177400
 2013-03-19 14:33:38 +00:00
Evgeniy Stepanov 6d02c1c598 [sanitizer] Avoid use of uintptr_t. 
llvm-svn: 177384
 2013-03-19 09:39:15 +00:00
Evgeniy Stepanov b4a218db34 [sanitizer] Don't adjust the size of the user-allocated stack. 
Moved this code to sanitizer_common.

llvm-svn: 177383
 2013-03-19 09:30:52 +00:00
Alexey Samsonov a097f7b1e3 [Sanitizer] Add default constructor for BlockingMutex 
llvm-svn: 177072
 2013-03-14 13:30:56 +00:00
Evgeniy Stepanov 5697b58ec4 [sanitizer] Move GetTlsSize code from TSan to sanitizer_common. 
llvm-svn: 176938
 2013-03-13 08:19:53 +00:00
Alexey Samsonov d38aceda4e [Sanitizer] Fix a typo in function name 
llvm-svn: 176932
 2013-03-13 06:55:02 +00:00
Alexey Samsonov 06d3aa4884 [Sanitizer] Change MemoryMappingLayout methods to also report memory protection flags (for future use in leak checker). Patch by Sergey Matveev. 
llvm-svn: 176931
 2013-03-13 06:51:02 +00:00