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133 Commits

Author SHA1 Message Date
Dmitry Vyukov 8a3934f85b sanitizer_common: fix function w/o return 
When SANITIZER_USES_CANONICAL_LINUX_SYSCALLS the function misses return statement.

llvm-svn: 222532
 2014-11-21 13:55:19 +00:00
Alexey Samsonov 4925fd4b05 Fix -Wcast-qual warnings in sanitizers 
llvm-svn: 221936
 2014-11-13 22:40:59 +00:00
Yury Gribov ecfa592671 Removed r221896, it seems to break build in various ways. 
llvm-svn: 221912
 2014-11-13 19:37:30 +00:00
Yury Gribov 17072ef348 [ASan] Add process basename to log name and error message to simplify analysis of sanitized systems logs. 
Reviewed at http://reviews.llvm.org/D5724

llvm-svn: 221896
 2014-11-13 16:01:23 +00:00
Evgeniy Stepanov bc496dab07 [asan] Delay system log initialization on Android. 
Writing to system log requires libc interceptors to be initialized.
Fixes crashes with verbosity=1 on newer Android builds.

llvm-svn: 217764
 2014-09-15 11:37:40 +00:00
Viktor Kutuzov d0907ae222 Fix getting environment variables for sanitizers needs on FreeBSD 
Differential Revision: http://reviews.llvm.org/D4229

llvm-svn: 212690
 2014-07-10 08:53:29 +00:00
Dmitry Vyukov f9c22916d5 tsan: fix freebsd build 
freebsd does not have /proc/self/environ

llvm-svn: 211417
 2014-06-20 22:49:41 +00:00
Dmitry Vyukov 3fc095e031 tsan: remove unused header include 
llvm-svn: 211385
 2014-06-20 18:28:34 +00:00
Viktor Kutuzov 9cd9b4ce0c Support getting executable's name for sanitizers needs on FreeBSD 
llvm-svn: 209805
 2014-05-29 12:12:42 +00:00
Alexey Samsonov 5bcd1d8a8f [Sanitizer] Always prefer cached contents of /proc/self/exe if it's available 
llvm-svn: 209773
 2014-05-28 21:23:53 +00:00
Evgeniy Stepanov 567e516015 [asancov] Write coverage directly to a memory-mapped file. 
This way does not require a __sanitizer_cov_dump() call. That's
important on Android, where apps can be killed at arbitrary time.

We write raw PCs to disk instead of module offsets; we also write
memory layout to a separate file. This increases dump size by the
factor of 2 on 64-bit systems.

llvm-svn: 209653
 2014-05-27 12:37:52 +00:00
Greg Fitzgerald 7b15cf8884 On AArch64, use clone() instead of fork() 
Patch by Gideon Billings.

Differential Revision: http://reviews.llvm.org/D3903

llvm-svn: 209641
 2014-05-26 23:44:55 +00:00
Kostya Serebryany b9aa538db1 [sanitizer] fix linux_dirent for SANITIZER_X32; based on patch by H.J. Lu 
llvm-svn: 209281
 2014-05-21 08:21:13 +00:00
Kostya Serebryany 84019ff7e5 Cast pointers to uptr when calling internal_syscall 
For Linux/x86-64, pointers passed to internal_syscall should be casted
to uptr first.  Otherwise, they won't be properly extended to 64-bit for
x32.
Patch by H.J. Lu

llvm-svn: 209278
 2014-05-21 07:49:03 +00:00
Sergey Matveev 6d8b9a747c [sanitizer] Fix go build following r209121. 
llvm-svn: 209136
 2014-05-19 16:08:53 +00:00
Sergey Matveev 6cb47a083b [sanitizer] Support sandboxing in sanitizer coverage. 
Summary:
Sandboxed code may now pass additional arguments to
__sanitizer_sandbox_on_notify() to force all coverage data to be dumped to a
single file (the default is one file per module). The user may supply a file or
socket to write to. The latter option can be used to broker out the file writing
functionality. If -1  is passed, we pre-open a file.

llvm-svn: 209121
 2014-05-19 12:53:03 +00:00
Alexander Potapenko 291b827890 [libsanitizer] Fix the return type of internal_fork 
llvm-svn: 208714
 2014-05-13 17:31:09 +00:00
Alexander Potapenko 4a6cac4382 [libsanitizer] Use internal_fork() to spawn the symbolizer process. 
This should fix https://code.google.com/p/thread-sanitizer/issues/detail?id=61

llvm-svn: 208707
 2014-05-13 16:17:54 +00:00
Alexey Samsonov 18adbc361a Remove sanitizer_linux_libcdep.cc from TSan-Go build 
llvm-svn: 203238
 2014-03-07 13:17:32 +00:00
Alexey Samsonov 78a6d2073f [FreeBSD] Port sanitizers' syscalls. 
Patch by Viktor Kutuzov!

llvm-svn: 203227
 2014-03-07 10:03:54 +00:00
Evgeniy Stepanov f4dcf77623 [asan] Fix printing of long reports to logcat on Android. 
__android_log_write has an implicit message length limit.
Print one line at a time.

llvm-svn: 202250
 2014-02-26 09:39:55 +00:00
Kostya Serebryany c98ce28533 [sanitizer] AArch64 sanitizer support; patch by Christophe Lyon and Yvan Roux 
llvm-svn: 201303
 2014-02-13 07:50:20 +00:00
Evgeniy Stepanov 01cd8ae204 [asan] Read extra flags from a system property on activation on Android. 
llvm-svn: 200550
 2014-01-31 14:36:55 +00:00
Alexander Potapenko 789e3e1b7c [ASan] Move the SIGSEGV/SIGBUS handling to sanitizer_common 
This change is a part of refactoring intended to have common signal handling behavior in all tools.
This particular CL moves InstallSignalHandlers() into sanitizer_common (making it InstallDeadlySignalHandlers()), but doesn't enable default signal handlers for any tool other than ASan.

llvm-svn: 200542
 2014-01-31 13:10:07 +00:00
Alexander Potapenko e925e53114 Fix compilation: don't convert NULL to a pointer-incompatible type. 
llvm-svn: 200536
 2014-01-31 11:44:15 +00:00
Alexander Potapenko d5802fe548 Make signal-related functions use __sanitizer_* structures instead of __sanitizer_kernel_* ones. 
Also rename internal_sigaction() into internal_sigaction_norestorer(), as this function doesn't fully
implement the sigaction() functionality on Linux.

This change is a part of refactoring intended to have common signal handling behavior in all tools.

llvm-svn: 200535
 2014-01-31 11:29:51 +00:00
Evgeniy Stepanov 350fe4b1af [asan] Android logging. 
This change duplicates all ASan output to system log on Android.

llvm-svn: 199887
 2014-01-23 11:34:41 +00:00
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