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71 Commits

Author SHA1 Message Date
Evgeniy Stepanov 0af672326a [sanitizer] Replace more platform checks with SANITIZER_ constants. 
llvm-svn: 177400
 2013-03-19 14:33:38 +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
Evgeniy Stepanov c6bce93591 [msan] Intercept readdir64. 
llvm-svn: 177065
 2013-03-14 12:49:23 +00:00
Evgeniy Stepanov 4062a396c7 [msan] Fix a typo in test. 
llvm-svn: 177059
 2013-03-14 11:58:13 +00:00
Evgeniy Stepanov fe0199ea54 [msan] Options for switching between fast and cfi unwinders in run time. 
Does not change default behavior.

llvm-svn: 177057
 2013-03-14 11:47:03 +00:00
Evgeniy Stepanov 231894a902 [sanitizer] Intercept frexp and friends. 
llvm-svn: 177056
 2013-03-14 11:34:39 +00:00
Evgeniy Stepanov ead6cf7c72 [msan] Intercept __strdup, strndup, __strndup. 
llvm-svn: 177052
 2013-03-14 11:10:36 +00:00
Evgeniy Stepanov 96f82f8ac3 [sanitizer] Fix lint. 
llvm-svn: 176943
 2013-03-13 10:20:35 +00:00
Alexey Samsonov d7ab381f53 [Sanitizer] Build ASan, TSan and MSan runtimes with -fno-rtti. 
llvm-svn: 176940
 2013-03-13 09:18:30 +00:00
Evgeniy Stepanov 98f5ea0dba [msan] Increase stack size as required. 
Adjust stack size in pthread_attr_t when the app-requested size does not fit MSan TLS.

llvm-svn: 176939
 2013-03-13 09:01:40 +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
Evgeniy Stepanov 26d5bc7fdf [msan] Use sptr instead of ptrdiff_t. 
llvm-svn: 176854
 2013-03-12 07:21:17 +00:00
Reid Kleckner c9d382b5a4 [msan] intercept dlopen and clear shadow for it 
Summary:
The loader does not call mmap() through the PLT because it has to
bootstrap the process before libc is present.  Hooking dlopen() isn't
enough either because the loader runs module initializers before
returning, and they could run arbitrary msan instrumented code.

If msandr is present, then we can intercept the mmaps from dlopen at the
syscall layer and clear the shadow there.  If msandr is missing, we
clear the shadow after dlopen() and hope any initializers are trivial.

Reviewers: eugenis

CC: kcc, llvm-commits

Differential Revision: http://llvm-reviews.chandlerc.com/D509

llvm-svn: 176818
 2013-03-11 18:07:42 +00:00
Reid Kleckner 063dfe3244 [msan] Block reports from interceptors during _Unwind_Backtrace 
Summary:
I'm hitting a big recursive report from:
  uninit on strlen ->
  __msan::PrintWarningWithOrigin() ->
  __msan::GetStackTrace() ->
  __sanitizer::StackTrace::SlowUnwindStack() ->
  _Unwind_Backtrace() ->
  ... libgcc calls ->
  uninit on strlen() ->
  ... repeats

Reviewers: eugenis

Differential Revision: http://llvm-reviews.chandlerc.com/D497

llvm-svn: 176555
 2013-03-06 16:11:58 +00:00
Evgeniy Stepanov 218c582cb5 [msan] Lit tests for __attribute__((no_sanitize_memory)). 
llvm-svn: 176248
 2013-02-28 11:25:54 +00:00
Evgeniy Stepanov 57d6f737e6 [sanitizer] Add MSan to Makefile-based build rules. 
llvm-svn: 175737
 2013-02-21 13:55:54 +00:00
Evgeniy Stepanov 76dc3a81ea [msan] Use slow stack unwinder in UMR reports. 
llvm-svn: 175510
 2013-02-19 12:43:18 +00:00
Evgeniy Stepanov adaca58526 [msan] Fix ReExec on linux. 
execle(argv[0], ...) is wrong, because argv[0] may contain a PATH-resolvable
program name. Execute /proc/self/exe instead.

llvm-svn: 175504
 2013-02-19 11:09:29 +00:00
Evgeniy Stepanov ea61d08185 [sanitizer] Add interceptors for localtime and friends. 
llvm-svn: 175499
 2013-02-19 09:19:16 +00:00
Kostya Serebryany ec87e785a3 [msan] don't check shadow inside interceptors if we are inside symbolizer; add weak function __msan_default_options that overrides default options 
llvm-svn: 175040
 2013-02-13 07:19:47 +00:00
Evgeniy Stepanov e676f66fe3 [msan] Allow zero buf pointer in getcwd() interceptor. 
llvm-svn: 174970
 2013-02-12 14:36:22 +00:00
Alexey Samsonov 93686fc6f1 [MSan] symbolize correct PC when printing Summary message 
llvm-svn: 174956
 2013-02-12 10:46:39 +00:00
Evgeniy Stepanov 257274e754 [msan] Lit tests for MemorySanitizer. 
Build system setup for MSan lit tests (build with freshly-built clang, run,
check output) - a nearly exact copy from ASan.
First 2 lit tests for MSan.

llvm-svn: 174876
 2013-02-11 11:34:26 +00:00
Kostya Serebryany 7b0b9b3b65 [msan] add strip_path_prefix flag; print error summary; don't crash while printing summary if debug info is missing. The tests will follow later once we establish the lit-like tests for msan. 
llvm-svn: 174595
 2013-02-07 08:04:56 +00:00
Kostya Serebryany bda64b4d40 [sanitizer] make the error messages from sanitizer_common contain the actual tool name 
llvm-svn: 174059
 2013-01-31 14:11:21 +00:00
Evgeniy Stepanov 358698279d [sanitizer] Further split private and public sanitizer headers. 
And make msan_interface.h C-compatible.

llvm-svn: 173928
 2013-01-30 13:12:08 +00:00
Alexey Samsonov 0d92533b29 Use LLVM_BUILD_TYPE instead of CMAKE_BUILD_TYPE in compiler-rt unit tests to match the behavior of llvm unittests 
llvm-svn: 173926
 2013-01-30 12:18:49 +00:00
Alexey Samsonov 49a32c1d08 [Sanitizer] update style checker script and fix namespace style warnings 
llvm-svn: 173910
 2013-01-30 07:45:58 +00:00
Evgeniy Stepanov eac7f934f0 [msan] Cleanup public interface header. 
Moved everything users are not supposed to use to a private interface header.
Documented all public interfaces. Made them safe to use even if built without
MemorySanitizer.

llvm-svn: 173800
 2013-01-29 14:33:29 +00:00
Evgeniy Stepanov 9f7e8c1433 [msan] A runtime call to support custom allocators. 
llvm-svn: 173687
 2013-01-28 13:52:49 +00:00
Evgeniy Stepanov 2538bd1901 [msan] Remove icmp tests that require exact shadow propagation. 
llvm-svn: 173686
 2013-01-28 13:45:16 +00:00
Alexey Samsonov 5311754b62 [CMake] Fix compiler-rt tests after r173617 
llvm-svn: 173668
 2013-01-28 07:16:22 +00:00
Evgeniy Stepanov 0e5becb830 [msan] Tests for ICmp handling. 
llvm-svn: 173456
 2013-01-25 15:39:11 +00:00
Kostya Serebryany fa79cd65e2 [sanitizer] fix calloc overflow in asan/tsan/msan 
llvm-svn: 173441
 2013-01-25 11:46:22 +00:00
Evgeniy Stepanov d1bfdc32b2 [msan] Allow waitpid while in __msan_init(). 
This is used in symbolizer init.

llvm-svn: 173263
 2013-01-23 14:22:05 +00:00
Evgeniy Stepanov ffffbefa43 [msan] gethostbyname interceptor. 
llvm-svn: 173249
 2013-01-23 10:43:38 +00:00
Evgeniy Stepanov fdf3fa69c2 [msan] Remove the trap handler code. 
llvm-svn: 173161
 2013-01-22 14:29:15 +00:00
Evgeniy Stepanov 03ee782bee [msan] Follow -msan-keep-going in reports from interceptors. 
llvm-svn: 173158
 2013-01-22 13:35:45 +00:00
Evgeniy Stepanov 8fdf7d0586 [msan] Fix linkage type of __msan_track_origins. 
llvm-svn: 173157
 2013-01-22 13:34:57 +00:00
Evgeniy Stepanov f9a7aba34a [msan] Simplify test code. 
llvm-svn: 173155
 2013-01-22 12:33:11 +00:00
Evgeniy Stepanov 2b65c0d1cf [msan] Test handling of volatile bitfields. 
llvm-svn: 173154
 2013-01-22 12:31:39 +00:00
Evgeniy Stepanov ef68259d26 [msan] Stop using volatile assignments as undef checks in MSan tests. 
A runtime call is used instead.
MSan will stop adding shadow checks on volatile stores soon.

llvm-svn: 173152
 2013-01-22 12:29:00 +00:00
Alexey Samsonov d0522c73b5 CMake: use add_compiler_rt_static_runtime to build TSan and MSan runtimes. No functionality change. 
llvm-svn: 172978
 2013-01-20 14:14:13 +00:00
Alexey Samsonov 163ab9d0a5 CMake: create AddCompilerRT module and implement convenience add_compiler_rt_object_library function 
llvm-svn: 172826
 2013-01-18 16:05:21 +00:00
Evgeniy Stepanov 01671c33ff [sanitizer] lint 
llvm-svn: 172817
 2013-01-18 13:12:56 +00:00
Evgeniy Stepanov a6c4a387ee [sanitizer] Rename 2 files *.h->*.inc as appropriate. 
Also add a missing include.

llvm-svn: 172814
 2013-01-18 13:01:18 +00:00
Alexey Samsonov 193b45f4fe CMake variables renaming: X86_64->x86_64 I386->i386 
llvm-svn: 172812
 2013-01-18 12:45:44 +00:00
Evgeniy Stepanov 91181eaa59 [sanitizer] Fix Mac build. 
llvm-svn: 172809
 2013-01-18 11:38:23 +00:00
Evgeniy Stepanov 222076e972 [sanitizer] Common *scanf interceptors. 
llvm-svn: 172805
 2013-01-18 11:17:23 +00:00
Kostya Serebryany 69fe0ba415 [sanitizer] reapply r172719, r172721-172723, r172725, and also fix the warning on Mac. 
llvm-svn: 172791
 2013-01-18 06:43:13 +00:00