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129 Commits

Author SHA1 Message Date
Evgeniy Stepanov 022235cf04 [msan] Unpoison argument shadow for C++ module destructors. 
Fixes PR17377.

llvm-svn: 191508
 2013-09-27 11:32:21 +00:00
Alexey Samsonov 786ee9b1ad [MSan] Fix -Wempty-body warning 
llvm-svn: 190994
 2013-09-19 08:35:16 +00:00
Evgeniy Stepanov 65562f5281 [msan] Fix origin of deallocated memory. 
MSan poisons deallocated memory but it used to give it an invalid origin value,
resulting in confusing reports. This change associates deallocation stack trace
with such memory.

Note that MSan does not have quarantine, and use-after-free detection is very
limited.

llvm-svn: 190781
 2013-09-16 11:03:31 +00:00
Evgeniy Stepanov 9be91e970e [msan] Intercept tzset. 
llvm-svn: 190682
 2013-09-13 11:27:38 +00:00
Evgeniy Stepanov 842fa3f80d [msan] Intercept fstatat / fstatat64. 
llvm-svn: 190306
 2013-09-09 13:40:41 +00:00
Kostya Serebryany 6c5b034d7b [msan] make calloc crash instead of returning 0 on overflow (controlled by the allocator_may_return_null flag) 
llvm-svn: 190132
 2013-09-06 10:58:55 +00:00
Evgeniy Stepanov e3eaa7bb35 [msan] Intercept memalign, valloc, pvalloc. 
PR17039

llvm-svn: 189750
 2013-09-02 09:24:53 +00:00
Evgeniy Stepanov 4f961de94e [msan] Remove extra backup/restore calls. 
llvm-svn: 189461
 2013-08-28 09:17:47 +00:00
Evgeniy Stepanov cb22c67a21 [msan] Save/restore va_arg_overflow_tls in signal handlers. 
llvm-svn: 189351
 2013-08-27 14:08:15 +00:00
Evgeniy Stepanov c41798152f [msan] Unpoison all TLS shadow when leaving a signal handler. 
llvm-svn: 189343
 2013-08-27 12:59:39 +00:00
Evgeniy Stepanov bb25af5f7b [msan] Fix a data race in signal/sigaction interceptors. 
llvm-svn: 189342
 2013-08-27 11:34:05 +00:00
Evgeniy Stepanov a40a058ff1 [sanitizer] Simplify sigaction and sigset_t handling. 
llvm-svn: 189338
 2013-08-27 11:10:04 +00:00
Dmitry Vyukov 97f0eae0a5 tsan/msan: add halt_on_error flag 
If halt_on_error==true, program terminates after reporting first error.

llvm-svn: 188279
 2013-08-13 15:33:00 +00:00
Evgeniy Stepanov 64cace0687 [sanitizer] Intercept poll/ppoll. 
llvm-svn: 188177
 2013-08-12 13:19:53 +00:00
Evgeniy Stepanov 5dbedf6c2a [msan] Intercept setenv, putenv. 
llvm-svn: 187575
 2013-08-01 11:14:14 +00:00
Evgeniy Stepanov 807e131261 [msan] Intercept pthread_join. 
llvm-svn: 187413
 2013-07-30 12:54:34 +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
Timur Iskhodzhanov d7eb67774e Fix check_lint warnings in sanitizers' runtime libraries 
llvm-svn: 186328
 2013-07-15 16:11:39 +00:00
Evgeniy Stepanov faba61a7bc [sanitizer] Support GLOB_ALTDIRFUNC in glob interceptor. 
llvm-svn: 185932
 2013-07-09 12:07:59 +00:00
Evgeniy Stepanov 77ef78a0a5 [sanitizer] Intercept realpath and canonicalize_file_name. 
Handle realpath(path, NULL) form.

llvm-svn: 185921
 2013-07-09 09:53:37 +00:00
Evgeniy Stepanov 628d727749 [msan] Intercept pthread_key_create. 
llvm-svn: 185693
 2013-07-05 12:31:07 +00:00
Evgeniy Stepanov db615c186f [sanitizer] More interceptors. 
bcopy
strtoimax, strtoumax
mbstowcs, mbsrtowcs, mbsnrtowcs
wcstombs, wcsrtombs, wcsnrtombs

llvm-svn: 185624
 2013-07-04 13:19:41 +00:00
Evgeniy Stepanov aa23bd83e5 [msan] Intercept mempcpy, wmempcpy. 
llvm-svn: 185431
 2013-07-02 14:49:24 +00:00
Evgeniy Stepanov 165d759a6a [sanitizer] Intercept mbtowc, mbrtowc, get_current_dir_name. 
Move getcwd to common interceptors.

llvm-svn: 185424
 2013-07-02 13:34:44 +00:00
Evgeniy Stepanov 654688bed5 [msan] Intercept stpcpy. 
llvm-svn: 185340
 2013-07-01 15:19:37 +00:00
Evgeniy Stepanov dec0f76c14 [sanitizer] Intercept ptrace. 
llvm-svn: 185142
 2013-06-28 11:02:43 +00:00
Alexey Samsonov ed4594b76a [MSan] Rename __msan_unpoision_param to __msan::UnpoisonParam - it shouldn't be in interface 
llvm-svn: 185062
 2013-06-27 07:50:56 +00:00
Evgeniy Stepanov 06d6c25141 [sanitizer] readdir and readdir_r interceptors. 
llvm-svn: 184950
 2013-06-26 15:00:53 +00:00
Evgeniy Stepanov 830550ce4c [msan] Unpoison param-tls in signal handler wrapper. 
This an entry point from uninstrumented code.

llvm-svn: 184734
 2013-06-24 13:48:42 +00:00
Evgeniy Stepanov b58b72e151 [msan] Intercept (v)asprintf. 
llvm-svn: 184545
 2013-06-21 13:32:26 +00:00
Evgeniy Stepanov ae4e1ec4e6 [msan] Add keep_going runtime flag. 
llvm-svn: 184542
 2013-06-21 12:37:58 +00:00
Evgeniy Stepanov 4717d2d494 [msan] Fix gcc build of msan runtime. 
llvm-svn: 182999
 2013-05-31 13:04:07 +00:00
Evgeniy Stepanov 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
Evgeniy Stepanov a4d08c4e87 [sanitizer] Move TSan and MSan recvmsg interceptors to common. 
llvm-svn: 182843
 2013-05-29 11:30:00 +00:00
Evgeniy Stepanov 08f662845d [sanitizer] Share TSan accept & accept4 interceptors with other sanitizers. 
llvm-svn: 182835
 2013-05-29 09:09:58 +00:00
Evgeniy Stepanov a343d1d881 [msan] Fix line >80 chars. 
llvm-svn: 182578
 2013-05-23 11:51:47 +00:00
Evgeniy Stepanov bfd2122b20 [msan] getaddrinfo & nested interceptor support. 
Multiple connected changes:
- Ignore reads from nested interceptors.
- Check shadow on reads from common interceptors.
- getaddrinfo interceptor.

llvm-svn: 182466
 2013-05-22 12:50:26 +00:00
Evgeniy Stepanov ff6728f2f8 [msan] Unpoison dlpi_name in dl_iterate_phdr interceptor. 
llvm-svn: 182093
 2013-05-17 12:51:13 +00:00
Evgeniy Stepanov 87c6ec7cfe [msan] Intercept dl_iterate_phdr. 
llvm-svn: 182004
 2013-05-16 13:00:25 +00:00
Alexey Samsonov 34093f0de8 [MSan] Make a few interface functions accept 'const void *' instead of 'void*' 
llvm-svn: 180102
 2013-04-23 13:34:19 +00:00
Evgeniy Stepanov 455abf4872 [msan] Unpoison the result of posix_memalign. 
llvm-svn: 180101
 2013-04-23 13:27:36 +00:00
Evgeniy Stepanov f5523116e9 [sanitizer] Syscall hooks. 
Pre- and post- hooks for linux syscalls. Not wired into anything, but exposed
through public interface.

llvm-svn: 179288
 2013-04-11 14:37:04 +00:00
Evgeniy Stepanov 460067823b [sanitizer] Interceptors for wait*. 
llvm-svn: 179096
 2013-04-09 14:34:59 +00:00
Evgeniy Stepanov b4eac2f810 [msan] Interceptors for pipe2 and socketpair. 
llvm-svn: 179022
 2013-04-08 13:45:12 +00:00
Kostya Serebryany 5b4267f7e7 [sanitizer] found a bug by code inspection: CHECK(a=b) instead of CHECK(a==b). Was puzzled why lint did not catch it. Turns out this check was disabled for asan source. fix all cases and enable the check 
llvm-svn: 178872
 2013-04-05 14:40:25 +00:00
Evgeniy Stepanov e7a7a9b972 [msan] Fix sigaction interceptor. 
llvm-svn: 178868
 2013-04-05 12:58:07 +00:00
Evgeniy Stepanov 7948c648bf [msan] A runtime option to disable wrapping of signal handlers. 
llvm-svn: 178865
 2013-04-05 11:59:16 +00:00
Evgeniy Stepanov 7b0e132551 [sanitizer] Use ucontext_t instead of "struct ucontext". 
Fixes Mac build.

llvm-svn: 178755
 2013-04-04 09:03:56 +00:00
Evgeniy Stepanov 1f8b3538b4 [msan] Unpoison siginfo_t and ucontext_t in signal handlers. 
Add wrappers for all user signal handlers to unpoison the handler's arguments.

llvm-svn: 178754
 2013-04-04 08:22:52 +00:00
Kostya Serebryany c3525ce6ac [sanitizer] while doing fast unwinding make sure that the frame pointer is aligned; fix lint 
llvm-svn: 178747
 2013-04-04 06:52:40 +00:00
Evgeniy Stepanov f8213b4eb3 [sanitizer] More interceptors. 
getpwnam, getpwuid, getpwnam_r, getpwuid_r, clock_getres, clock_gettime,
clock_settime, getitimer, setitimer, sigaction (MSan).

llvm-svn: 178465
 2013-04-01 14:47:21 +00:00
Evgeniy Stepanov ecbf64648f [msan] Handle dlopen() failure in dlopen interceptor. 
llvm-svn: 177728
 2013-03-22 11:59:49 +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 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
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
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
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
Evgeniy Stepanov 9f7e8c1433 [msan] A runtime call to support custom allocators. 
llvm-svn: 173687
 2013-01-28 13:52:49 +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 03ee782bee [msan] Follow -msan-keep-going in reports from interceptors. 
llvm-svn: 173158
 2013-01-22 13:35:45 +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
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
Jakob Stoklund Olesen 7956e0094d Revert r172719, r172721-172723, and r172725. 
The r172719 patch broke the build on Mac, the others depended on it.

compiler-rt/lib/asan/asan_interceptors.cc:78:13: error: unused function
      'SetThreadName' [-Werror,-Wunused-function]
      static void SetThreadName(const char *name) {

Orignal headlines:

  [asan] attempting to fix the Mac build
  [asan] restructure read/pread/pread64 tests
  [sanitizer] move write/pwrite/pwrite64 interceptors to common
  [msan] start using common interceptors in msan
  [tsan] move prctl interceptor from asan to common_interceptors thus enabling it for tsan too

llvm-svn: 172763
 2013-01-17 22:51:56 +00:00
Kostya Serebryany b114d01849 [msan] start using common interceptors in msan 
llvm-svn: 172721
 2013-01-17 13:57:07 +00:00
Evgeniy Stepanov e3a325197a [msan] More interceptors. 
strtod and friends, dladdr, getrusage

llvm-svn: 172720
 2013-01-17 13:42:17 +00:00
Evgeniy Stepanov 84f46d9993 [msan] Improve recvfrom interceptor. 
llvm-svn: 171071
 2012-12-25 16:51:57 +00:00
Alexey Samsonov cd1e68ebb1 [Sanitizer] use INTERCEPT_FUNCTION(foo) instead of CHECK(INTERCEPT_FUNCTION(foo)) - this check may fail on Linux if user program defines its own version of library function foo 
llvm-svn: 170189
 2012-12-14 11:52:02 +00:00
Kostya Serebryany 07bb3925b0 [sanitizer] replace size_t with SIZE_T in interceptors (same for ssize_t, off_t and off64_t). This is done to avoid confusion and to make the code work with compilers that define size_t w/o any includes (MSVC) 
llvm-svn: 170103
 2012-12-13 06:31:40 +00:00
Kostya Serebryany 9a58d399c7 [asan] add sanitizer_common/sanitizer_common_interceptors.h with pread/pread64/read interceptors. Use it in asan. Add asan tests for pread/etc. Add FIXME to tsan/msan interceptors 
llvm-svn: 169966
 2012-12-12 09:54:35 +00:00
Evgeniy Stepanov c5033786ba [msan] MemorySanitizer runtime. 
Initial commit of the MemorySanitizer runtime library.

llvm-svn: 169858
 2012-12-11 12:27:27 +00:00