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144 Commits

Author SHA1 Message Date
Evgeniy Stepanov 37e069c2ac [msan] Fix fcvt interceptor. 
fcvt() result can be heap-allocated and must be unpoisoned.

llvm-svn: 215106
 2014-08-07 12:45:55 +00:00
Alexey Samsonov d6906e4ffe [MSan] Fix strncpy interceptor 
llvm-svn: 213590
 2014-07-22 00:10:08 +00:00
Evgeniy Stepanov eb893a1fd6 [msan] Fix out of bounds access in origin copying. 
llvm-svn: 212534
 2014-07-08 14:15:23 +00:00
Alexey Samsonov 91bb8e0e3a Generalize sanitizer allocator public interface. 
Introduce new public header <sanitizer/allocator_interface.h> and a set
of functions __sanitizer_get_ownership(), __sanitizer_malloc_hook() etc.
that will eventually replace their tool-specific equivalents
(__asan_get_ownership(), __msan_get_ownership() etc.). Tool-specific
functions are now deprecated and implemented as stubs redirecting
to __sanitizer_ versions (which are implemented differently in each tool).

Replace all uses of __xsan_ versions with __sanitizer_ versions in unit
and lit tests.

llvm-svn: 212469
 2014-07-07 17:39:31 +00:00
Alexey Samsonov e3a401a12b [MSan] Fixup r212082: enable tests for _mm_ intrinsics if and only if the 
unit test source file is compiled with Clang.

llvm-svn: 212121
 2014-07-01 19:58:41 +00:00
Alexey Samsonov c0fda339e2 Add the way to disable MSan unit tests for _mm_* intrinsics 
llvm-svn: 212082
 2014-07-01 01:38:52 +00:00
Evgeniy Stepanov 8717fec9af [msan] Fix origin copying. 
Conditions for the first and the last origin value in range were wrong.

llvm-svn: 211585
 2014-06-24 11:50:26 +00:00
Evgeniy Stepanov 4ea1647e8b [msan] Handle X86 *.psad.* and *.pmadd.* intrinsics. 
llvm-svn: 211156
 2014-06-18 12:02:29 +00:00
Evgeniy Stepanov 9959915890 [msan] Intercept __strto*_internal. 
This should fix strtoimax/strtoumax on newer glibc.
https://code.google.com/p/memory-sanitizer/issues/detail?id=36

llvm-svn: 210463
 2014-06-09 10:41:22 +00:00
Evgeniy Stepanov 66c6a18d39 [msan] Add a test for mmx.packuswb. 
llvm-svn: 210458
 2014-06-09 08:58:41 +00:00
Evgeniy Stepanov aaaf74f9fb [msan] Simplify tests. 
llvm-svn: 210457
 2014-06-09 08:57:40 +00:00
Evgeniy Stepanov d425a2b169 [msan] Handle x86 vector pack intrinsics. 
llvm-svn: 210020
 2014-06-02 12:31:44 +00:00
Evgeniy Stepanov 208aae8ee0 [msan] Chained origins re-design. 
Generalize StackDepot and create a new specialized instance of it to
efficiently (i.e. without duplicating stack trace data) store the
origin history tree.

This reduces memory usage for chained origins roughly by an order of
magnitude.

Most importantly, this new design allows us to put two limits on
stored history data (exposed in MSAN_OPTIONS) that help avoid
exponential growth in used memory on certain workloads.

See comments in lib/msan/msan_origin.h for more details.

llvm-svn: 209284
 2014-05-21 09:02:13 +00:00
Evgeniy Stepanov 9ce9a6cdf6 [msan] Intercept wcsftime(). 
llvm-svn: 206179
 2014-04-14 14:59:42 +00:00
Evgeniy Stepanov f653cda269 [msan] Introduce MsanThread. Move thread-local allocator cache out of TLS. 
This reduces .tbss from 109K down to almost nothing.

llvm-svn: 205618
 2014-04-04 09:47:41 +00:00
Evgeniy Stepanov a55fcd35e9 [msan] Precise origin handling in __unaligned_(load|store)*. 
llvm-svn: 205412
 2014-04-02 11:06:35 +00:00
Evgeniy Stepanov 8dbf3faa16 [msan] clang-format several unit tests 
llvm-svn: 205410
 2014-04-02 09:17:55 +00:00
Evgeniy Stepanov 86a4d2c32b [sanitizer] Intercept fgetpwent / fgetgrent. 
These interceptors require deep unpoisoning of return values.
While at it, we do the same for all other pw/gr interceptors to
reduce dependency on libc implementation details.

llvm-svn: 205004
 2014-03-28 13:03:55 +00:00
Evgeniy Stepanov 74e77756ef [sanitizer] Intercept getpwent/getgrent. 
llvm-svn: 205000
 2014-03-28 10:56:07 +00:00
Evgeniy Stepanov 9dcd5a353a [msan] Intercept several malloc-related functions. 
llvm-svn: 204923
 2014-03-27 13:29:29 +00:00
Evgeniy Stepanov 1382fabd97 [msan] Enable SelectPartial test. 
Fixed in r204716.

llvm-svn: 204717
 2014-03-25 13:09:14 +00:00
Evgeniy Stepanov 517ff05ffb [msan] Fix compiler warning in msan_test.cc. 
llvm-svn: 204708
 2014-03-25 10:03:39 +00:00
Evgeniy Stepanov 90384ad60e [msan] A disabled test for inexact "select" instrumentation. 
llvm-svn: 204707
 2014-03-25 09:36:15 +00:00
Alexey Samsonov 8c956460d3 Make MSan unittest -Werror=sign-compare clean 
llvm-svn: 204592
 2014-03-24 09:41:11 +00:00
Evgeniy Stepanov 9fa9a49853 [msan] Test for aggregates passing through ellipsis. 
llvm-svn: 203795
 2014-03-13 13:18:15 +00:00
Alexey Samsonov 6dece3c99f Add common interceptors for memchr/memrchr 
llvm-svn: 202972
 2014-03-05 13:25:32 +00:00
Evgeniy Stepanov f7abc8dff6 [msan] Tests for X86 SIMD bitshift intrinsic support. 
llvm-svn: 202713
 2014-03-03 13:52:36 +00:00
Evgeniy Stepanov a21280307f [sanitizer] Fix getpwuid_r (and similar) interceptors missing one of the arguments. 
llvm-svn: 201410
 2014-02-14 12:32:15 +00:00
Evgeniy Stepanov 05938a23f5 [sanitizer] Use mmap to zero-fill large shadow regions. 
This is covered by existing ASan test.
This does not change anything for TSan by default (but provides a flag to 
change the threshold size).
Based on a patch by florent.bruneau here:
  https://code.google.com/p/address-sanitizer/issues/detail?id=256

llvm-svn: 201400
 2014-02-14 11:41:26 +00:00
Sergey Matveev 1394f2da85 [msan] Rewrite strto* interceptors and add a few more. 
Express the strto* interceptors though macros. This removes a lot of
duplicate code and fixes a couple of copypasto bugs (where "res" was declared of
a different type than the actual return type). Also, add a few more interceptors
for strto*_l.

llvm-svn: 200316
 2014-01-28 13:45:58 +00:00
Evgeniy Stepanov 0b09c623c1 [msan] Replace assert() with GTest ASSERT_* in msan_test. 
llvm-svn: 200293
 2014-01-28 08:51:39 +00:00
Evgeniy Stepanov 3ee789cbbb [msan] Temporarily disable two tests that are failing with new glibc. 
llvm-svn: 198919
 2014-01-10 07:34:16 +00:00
Evgeniy Stepanov cb98c5f6f0 [msan] Relax gethostbyname_r test condition. 
Apparently, its return value depends on the glibc version.

llvm-svn: 197390
 2013-12-16 15:01:31 +00:00
Evgeniy Stepanov 43fc44007d [msan] Fix gethostbyname_r and similar interceptors. 
*h_errno is written not on success, but on failure.
In fact, it seems like it can be written even when return value signals
success, so we just unpoison it in all cases.

llvm-svn: 197383
 2013-12-16 13:24:33 +00:00
Evgeniy Stepanov 3158ec4002 [msan] Fix strncat interceptor, add missing tests. 
llvm-svn: 197244
 2013-12-13 16:31:59 +00:00
Evgeniy Stepanov 584fd96e9e [msan] Unpoison memory that is returned to the OS and flush its shadow. 
llvm-svn: 195244
 2013-11-20 12:51:14 +00:00
Evgeniy Stepanov bfb2016c83 [msan] Fix origin tracking in unaligned load/store. 
llvm-svn: 195130
 2013-11-19 14:47:56 +00:00
Evgeniy Stepanov 1c8c3fe4b4 [msan] Fix a very unfortunate typo in origin copying. 
It was causing randomly missing origins.

llvm-svn: 194036
 2013-11-05 01:24:38 +00:00
Evgeniy Stepanov a6b5eec757 [sanitizer] Intercept strptime. 
llvm-svn: 193903
 2013-11-02 01:01:35 +00:00
Evgeniy Stepanov 365bd0c88c [msan] Intercept memccpy. 
llvm-svn: 193897
 2013-11-01 23:49:48 +00:00
Evgeniy Stepanov a7add488ae [msan] Disable mlock/mlockall to work around a linux kernel bug. 
The same logic is present in ASan and TSan.

llvm-svn: 193755
 2013-10-31 15:51:22 +00:00
Evgeniy Stepanov 0bd1f00ec6 [sanitizer] Intercept drand48_r, lrand48_r. 
llvm-svn: 193655
 2013-10-29 22:25:27 +00:00
Evgeniy Stepanov bf60342d47 [sanitizer] Intercept sincos, remquo, lgamma, lgamma_r. 
llvm-svn: 193645
 2013-10-29 19:49:35 +00:00
Evgeniy Stepanov 451c8de2d8 [msan] Intercept shmat. 
llvm-svn: 193581
 2013-10-29 02:48:49 +00:00
Evgeniy Stepanov 94042e1ff2 [sanitizer] Intercept tmpnam, tmpnam_r, tempnam. 
llvm-svn: 193415
 2013-10-25 15:51:48 +00:00
Evgeniy Stepanov 2acb2470f9 [sanitizer] Remove pthread_attr_getstackaddr interceptor. 
The function is deprecated.

llvm-svn: 193409
 2013-10-25 14:27:00 +00:00
Evgeniy Stepanov 07507ffab4 [msan] Zerofill initstate_r buffer in random_r test. 
llvm-svn: 193406
 2013-10-25 13:03:20 +00:00
Evgeniy Stepanov c2b6cb0747 [sanitizer] Intercept pthread_attr_get*. 
llvm-svn: 193405
 2013-10-25 13:01:31 +00:00
Evgeniy Stepanov be9cdbb58c [sanitizer] Intercept random_r. 
llvm-svn: 193396
 2013-10-25 08:58:13 +00:00
Evgeniy Stepanov f312b480e2 [sanitizer] Intercept shmctl. 
llvm-svn: 193348
 2013-10-24 14:47:34 +00:00