56050e8f69
[sanitizer] Fix __sanitizer_unaligned_* to work with unaligned data types.
...
llvm-svn: 183224
2013-06-04 13:49:10 +00:00
53c8c13bf1
[msan] Implement __sanitizer_unaligned_*.
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llvm-svn: 183221
2013-06-04 13:08:36 +00:00
4717d2d494
[msan] Fix gcc build of msan runtime.
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llvm-svn: 182999
2013-05-31 13:04:07 +00:00
96284becf4
[msan] Handle mixed track-origins and keep-going settings (compiler-rt part).
...
Before this change, each module defined a weak_odr global __msan_track_origins
with a value of 1 if origin tracking is enabled, 0 if disabled. If there are
modules with different values, any of them may win. If 0 wins, and there is at
least one module with 1, the program will most likely crash.
With this change, __msan_track_origins is only emitted if origin tracking is
on. Then runtime library detects if there is at least one module with origin
tracking, and enables runtime support for it.
llvm-svn: 182996
2013-05-31 12:04:08 +00:00
87c6ec7cfe
[msan] Intercept dl_iterate_phdr.
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llvm-svn: 182004
2013-05-16 13:00:25 +00:00
6eff11e714
[msan] Common flags in MSan.
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llvm-svn: 181194
2013-05-06 13:15:14 +00:00
34093f0de8
[MSan] Make a few interface functions accept 'const void *' instead of 'void*'
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llvm-svn: 180102
2013-04-23 13:34:19 +00:00
c7af878a01
[msan] Conditionally disable new() and delete() wrappers.
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To be used with static libstdc++.
llvm-svn: 178866
2013-04-05 12:03:47 +00:00
7948c648bf
[msan] A runtime option to disable wrapping of signal handlers.
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llvm-svn: 178865
2013-04-05 11:59:16 +00:00
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
fe0199ea54
[msan] Options for switching between fast and cfi unwinders in run time.
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Does not change default behavior.
llvm-svn: 177057
2013-03-14 11:47:03 +00:00
98f5ea0dba
[msan] Increase stack size as required.
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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
06d3aa4884
[Sanitizer] Change MemoryMappingLayout methods to also report memory protection flags (for future use in leak checker). Patch by Sergey Matveev.
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llvm-svn: 176931
2013-03-13 06:51:02 +00:00
c9d382b5a4
[msan] intercept dlopen and clear shadow for it
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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
063dfe3244
[msan] Block reports from interceptors during _Unwind_Backtrace
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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
76dc3a81ea
[msan] Use slow stack unwinder in UMR reports.
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llvm-svn: 175510
2013-02-19 12:43:18 +00:00
adaca58526
[msan] Fix ReExec on linux.
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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
ec87e785a3
[msan] don't check shadow inside interceptors if we are inside symbolizer; add weak function __msan_default_options that overrides default options
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llvm-svn: 175040
2013-02-13 07:19:47 +00:00
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.
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llvm-svn: 174595
2013-02-07 08:04:56 +00:00
bda64b4d40
[sanitizer] make the error messages from sanitizer_common contain the actual tool name
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llvm-svn: 174059
2013-01-31 14:11:21 +00:00
eac7f934f0
[msan] Cleanup public interface header.
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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
fdf3fa69c2
[msan] Remove the trap handler code.
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llvm-svn: 173161
2013-01-22 14:29:15 +00:00
8fdf7d0586
[msan] Fix linkage type of __msan_track_origins.
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llvm-svn: 173157
2013-01-22 13:34:57 +00:00
9b52ce94db
[msan] Set program exit code in keep-going mode.
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llvm-svn: 172057
2013-01-10 11:17:55 +00:00
4a42cf69a6
[sanitizer] add statistics to the allocator; fix lint
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llvm-svn: 171161
2012-12-27 14:09:19 +00:00
367dc64563
[msan] Refactor report printing.
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llvm-svn: 171105
2012-12-26 09:32:05 +00:00
794a73124b
[msan] Check for conflicting memory mappings.
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Check for conflicting memory mappings before attempting to map shadow.
Helps avoid segfault on Linux with disabled ASLR.
llvm-svn: 171100
2012-12-26 06:37:23 +00:00
c5033786ba
[msan] MemorySanitizer runtime.
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Initial commit of the MemorySanitizer runtime library.
llvm-svn: 169858
2012-12-11 12:27:27 +00:00
Evgeniy Stepanov