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62 Commits

Author SHA1 Message Date
Evgeniy Stepanov 6edfad4811 [asan] Don't disable SEGV handler on Android by default. 
This is done mostly for consistency, because this setting is normally overridden in cmake.

llvm-svn: 202359
 2014-02-27 08:23:00 +00:00
Alexander Potapenko cf4bef3161 [ASan] Move the signal handling-related flags to sanitizer_common. 
This change is a part of refactoring intended to have common signal handling behavior in all tools.

llvm-svn: 200295
 2014-01-28 09:28:57 +00:00
Kostya Serebryany 714c67c31e [asan] extend asan-coverage (still experimental). 
- add a mode for collecting per-block coverage (-asan-coverage=2).
   So far the implementation is naive (all blocks are instrumented),
   the performance overhead on top of asan could be as high as 30%.
 - Make sure the one-time calls to __sanitizer_cov are moved to function buttom,
   which in turn required to copy the original debug info into the call insn.

Here is the performance data on SPEC 2006
(train data, comparing asan with asan-coverage={0,1,2}):

                             asan+cov0     asan+cov1      diff 0-1    asan+cov2       diff 0-2      diff 1-2
       400.perlbench,        65.60,        65.80,         1.00,        76.20,         1.16,         1.16
           401.bzip2,        65.10,        65.50,         1.01,        75.90,         1.17,         1.16
             403.gcc,         1.64,         1.69,         1.03,         2.04,         1.24,         1.21
             429.mcf,        21.90,        22.60,         1.03,        23.20,         1.06,         1.03
           445.gobmk,       166.00,       169.00,         1.02,       205.00,         1.23,         1.21
           456.hmmer,        88.30,        87.90,         1.00,        91.00,         1.03,         1.04
           458.sjeng,       210.00,       222.00,         1.06,       258.00,         1.23,         1.16
      462.libquantum,         1.73,         1.75,         1.01,         2.11,         1.22,         1.21
         464.h264ref,       147.00,       152.00,         1.03,       160.00,         1.09,         1.05
         471.omnetpp,       115.00,       116.00,         1.01,       140.00,         1.22,         1.21
           473.astar,       133.00,       131.00,         0.98,       142.00,         1.07,         1.08
       483.xalancbmk,       118.00,       120.00,         1.02,       154.00,         1.31,         1.28
            433.milc,        19.80,        20.00,         1.01,        20.10,         1.02,         1.01
            444.namd,        16.20,        16.20,         1.00,        17.60,         1.09,         1.09
          447.dealII,        41.80,        42.20,         1.01,        43.50,         1.04,         1.03
          450.soplex,         7.51,         7.82,         1.04,         8.25,         1.10,         1.05
          453.povray,        14.00,        14.40,         1.03,        15.80,         1.13,         1.10
             470.lbm,        33.30,        34.10,         1.02,        34.10,         1.02,         1.00
         482.sphinx3,        12.40,        12.30,         0.99,        13.00,         1.05,         1.06

llvm-svn: 199488
 2014-01-17 11:00:30 +00:00
Kostya Serebryany 2b5fddbc75 [asan] allow asan to use SizeClassAllocator32 on a 64-bit platform (if SANITIZER_CAN_USE_ALLOCATOR64=0). No functionality change by default is intended 
llvm-svn: 198044
 2013-12-26 13:52:38 +00:00
Chandler Carruth 736f9fd229 Revert three patches which were committed without explicit contribution 
by their authors.

This may break builds where others added code relying on these patches,
but please *do not* revert this commit. Instead, we will prepare patches
which fix the failures.

Reverts the following commits:
r168306: "[asan] support x32 mode in the fast stack unwinder. Patch by H.J. Lu"
r168356: "[asan] more support for powerpc, patch by Peter Bergner"
r196489: "[sanitizer] fix the ppc32 build (patch by Jakub Jelinek)"

llvm-svn: 196802
 2013-12-09 19:25:51 +00:00
Kostya Serebryany 7b664299f0 [asan] new shadow poison magic for contiguous-container-buffer-overflow, addressed Alexey Samsonov's comments for r195011 
llvm-svn: 195117
 2013-11-19 08:40:07 +00:00
Kostya Serebryany 3d97c2040d [asan] introduce __sanitizer_annotate_contiguous_container 
llvm-svn: 195011
 2013-11-18 14:02:05 +00:00
Bob Wilson a08e9ac927 Reapply asan coverage changes 194702-194704. 
I still don't know what is causing our bootstrapped LTO buildbots to fail,
but llvm r194701 seems to be OK and I can't imagine that these changes could
cause the problem.

llvm-svn: 194790
 2013-11-15 07:18:15 +00:00
Bob Wilson abc91eacac Speculatively revert asan coverage changes 194702-194704. 
Apple's bootstrapped LTO builds have been failing, and these changes (along
with llvm 194701) are the only things on the blamelist.  I will either reapply
these changes or help debug the problem, depending on whether this fixes the
buildbots.

llvm-svn: 194779
 2013-11-15 03:26:28 +00:00
Kostya Serebryany c46f281f83 [asan] unbreak dfsan, which includes sanitizer/common_interface_defs.h into internal sources (although it shoudn't) 
llvm-svn: 194704
 2013-11-14 13:44:43 +00:00
Kostya Serebryany 91c52d9552 [asan] Poor man's coverage that works with ASan (compiler-rt part) 
llvm-svn: 194702
 2013-11-14 13:28:17 +00:00
Peter Collingbourne 50cb32e614 Introduce an operator new for LowLevelAllocator, and convert most users to it. 
llvm-svn: 193308
 2013-10-24 06:23:39 +00:00
Dmitry Vyukov 7ac0b2b0e1 tsan: use sanitizer::CommonFlags in tsan 
llvm-svn: 192692
 2013-10-15 12:25:29 +00:00
Timur Iskhodzhanov 45e82d12b0 [*San/RTL] Fix minor breakage 
Grumbling: this hasn't been caught by running 'make check-{a,l,t}san check-sanitizer'
llvm-svn: 188262
 2013-08-13 12:03:51 +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 863746eb1a [sanitizer] Fix windows build. 
llvm-svn: 183225
 2013-06-04 14:06:16 +00:00
Evgeniy Stepanov 56050e8f69 [sanitizer] Fix __sanitizer_unaligned_* to work with unaligned data types. 
llvm-svn: 183224
 2013-06-04 13:49:10 +00:00
Timur Iskhodzhanov baf90ccfac Fix ALIGNED misuse in asan_thread.cc (built on all platforms); also, add a comment to the ALIGNED macro describing the correct usage 
llvm-svn: 183214
 2013-06-04 08:25:17 +00:00
Peter Collingbourne 6f4be19b57 [nolibc] Change internal syscall API to remove reliance on libc's errno. 
This change moves to a model where the error value of a system call is
potentially contained in the return value itself rather than being
implicit in errno.  The helper function internal_iserror can be used
to extract the error value from a return value.  On platforms other
than Linux/x86_64 this still uses errno, but other platforms are free
to port their error handling to this new model.

Differential Revision: http://llvm-reviews.chandlerc.com/D756

llvm-svn: 181436
 2013-05-08 14:43:49 +00:00
Timur Iskhodzhanov 664ec5d7a8 Finally drop the 'static' from INLINE and ALWAYS_INLINE 
The ALWAYS_INLINE doesn't have static on POSIX anyways since r178341; the INLINE is only used in .h files, so shouldn't have been 'static' in the first place

llvm-svn: 179371
 2013-04-12 09:37:20 +00:00
Alexey Samsonov 87c2a87b50 [Sanitizer] Fix OnPrint weak hook. Disable weak hooks for gotsan. 
llvm-svn: 178640
 2013-04-03 13:22:54 +00:00
Kostya Serebryany 91952cda76 [tsan] restore performance critical inlining in tsan: remove static from ALWAYS_INLINE, use ALWAYS_INLINE USED for critical functions. 
llvm-svn: 178341
 2013-03-29 09:44:16 +00:00
Timur Iskhodzhanov e3164e9647 Add "static" to the Windows ALWAYS_INLINE macro (similar to what we do on POSIX) 
llvm-svn: 178296
 2013-03-28 22:07:28 +00:00
Timur Iskhodzhanov a6788325cf Make all the ALWAYS_INLINE users Windows-friendly; also, avoid ALWAYS_INLINE INLINE combinations 
llvm-svn: 178266
 2013-03-28 18:52:40 +00:00
Evgeniy Stepanov 95eaa21637 [sanitizer] More renamed macros. 
llvm-svn: 177401
 2013-03-19 14:54:17 +00:00
Evgeniy Stepanov 0af672326a [sanitizer] Replace more platform checks with SANITIZER_ constants. 
llvm-svn: 177400
 2013-03-19 14:33:38 +00:00
Evgeniy Stepanov d3b56605f1 [sanitizer] Move ASan platform macros to sanitizer_common and rename them appropriately. 
llvm-svn: 177397
 2013-03-19 13:54:41 +00:00
Kostya Serebryany f0b8f989e9 add Linux syscall wrappers and ThreadLister to sanitizer_common 
ThreadLister is a Linux-specific class for obtaining the thread IDs of a process from procfs (/proc/<pid>/task/). It will be used by leak checking code.
Also add several syscall wrappers which will be required by the same code that uses ThreadLister, but are not used in ThreadLister itself.
Patch by Sergey Matveev

llvm-svn: 176179
 2013-02-27 11:22:40 +00:00
Kostya Serebryany fd61b6f0c8 [asan] make asan work with 7fff8000 offset and prelink 
When prelink is installed in the system, prelink-ed
libraries map between 0x003000000000 and 0x004000000000 thus occupying the shadow Gap,
so we need so split the address space even further, like this:
|| [0x10007fff8000, 0x7fffffffffff] || HighMem    ||
|| [0x02008fff7000, 0x10007fff7fff] || HighShadow ||
|| [0x004000000000, 0x02008fff6fff] || ShadowGap3 ||
|| [0x003000000000, 0x003fffffffff] || MidMem     ||
|| [0x00087fff8000, 0x002fffffffff] || ShadowGap2 ||
|| [0x00067fff8000, 0x00087fff7fff] || MidShadow  ||
|| [0x00008fff7000, 0x00067fff7fff] || ShadowGap  ||
|| [0x00007fff8000, 0x00008fff6fff] || LowShadow  ||
|| [0x000000000000, 0x00007fff7fff] || LowMem     ||

Do it only if necessary.

Also added a bit of profiling code to make sure that the
mapping code is efficient.

Added a lit test to simulate prelink-ed libraries.
Unfortunately, this test does not work with binutils-gold linker.
If gold is the default linker the test silently passes.

Also replaced
__has_feature(address_sanitizer)
with
__has_feature(address_sanitizer) || defined(__SANITIZE_ADDRESS__)
in two places.

Patch partially by Jakub Jelinek.

llvm-svn: 175263
 2013-02-15 12:00:24 +00:00
Kostya Serebryany b4c2c5c8a6 [asan] print a short one-line report summary after the full report. Currently, works only if symbolization happens in-process. 
llvm-svn: 174501
 2013-02-06 12:36:49 +00:00
Alexey Samsonov 4985b8766e [Sanitizer] use u32 instead of mode_t, which is defined in Darwin headers 
llvm-svn: 174189
 2013-02-01 16:32:18 +00:00
Alexey Samsonov 39313b780d [Sanitizer] make internal_open have the same interface as libc version 
llvm-svn: 174187
 2013-02-01 15:58:46 +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
Dmitry Vyukov 7f4603200f asan: fix ARM build 
llvm-svn: 172613
 2013-01-16 14:35:13 +00:00
Dmitry Vyukov 2854326db6 asan: correct non-temporal prefetch for memory allocator 
llvm-svn: 172522
 2013-01-15 09:03:20 +00:00
Dmitry Vyukov 86585ad319 asan: add memory prefetch to quarantine recycle 
llvm-svn: 172216
 2013-01-11 16:40:24 +00:00
Kostya Serebryany 734f1eb5f4 [asan/tsan] do not use __WORDSIZE macro, as it is glibc-private thing. Instead, define our own SANITIZER_WORDSIZE 
llvm-svn: 168424
 2012-11-21 12:38:58 +00:00
Dmitry Vyukov 2817639411 tsan: define missing compier macros for windows 
llvm-svn: 167450
 2012-11-06 12:54:16 +00:00
Dmitry Vyukov e9bafdf5b8 tsan: fix non-msvc windows build 
llvm-svn: 167449
 2012-11-06 12:50:13 +00:00
Dmitry Vyukov 04dd4b7349 tasn: improve sanitizer_internal_defs.h 
The file uses namespaces and extern "LANG", so it's kinda senseless to use #ifdef __cplusplus

llvm-svn: 167448
 2012-11-06 12:49:22 +00:00
Dmitry Vyukov e6b5a696e3 tsan: fix windows build 
__declspec is not _WIN32, it's _MSC_VER

llvm-svn: 167447
 2012-11-06 12:47:42 +00:00
Kostya Serebryany 278bd2e3a3 [asan] fix lint 
llvm-svn: 166006
 2012-10-16 04:50:32 +00:00
Alexey Samsonov 3a0a88fe0a [Sanitizer] Add UNREACHABLE(msg) macro 
llvm-svn: 165492
 2012-10-09 08:42:07 +00:00
Evgeniy Stepanov 49e8576a09 [*San]: handle EINTR. 
llvm-svn: 165006
 2012-10-02 13:41:40 +00:00
Alexey Samsonov a555b3faf4 [ASan] Apply some ASan-relevant pieces of patch by Ruben Van Boxem. In the same time, remove ASan from CMake build on Windows after conversation with Timur. We don't want to support building ASan on Windows until it is in a working state. 
llvm-svn: 164486
 2012-09-24 11:43:40 +00:00
Alexey Samsonov c21f901b2f [Sanitizer] fix warnings reported by gcc. Update the list of targets to check lint for 
llvm-svn: 163608
 2012-09-11 10:31:28 +00:00
Chandler Carruth 1aa4fef601 Relocate the external headers provided by ASan and the common sanitizer 
library.

These headers are intended to be available to user code when built with
AddressSanitizer (or one of the other sanitizer's in the future) to
interface with the runtime library. As such, they form stable external
C interfaces, and the headers shouldn't be located within the
implementation.

I've pulled them out into what seem like fairly obvious locations and
names, but I'm wide open to further bikeshedding of these names and
locations.

I've updated the code and the build system to cope with the new
locations, both CMake and Makefile. Please let me know if this breaks
anyone's build.

The eventual goal is to install these headers along side the Clang
builtin headers when we build the ASan runtime and install it. My
current thinking is to locate them at:

  <prefix>/lib/clang/X.Y/include/sanitizer/common_interface_defs.h
  <prefix>/lib/clang/X.Y/include/sanitizer/asan_interface.h
  <prefix>/lib/clang/X.Y/include/sanitizer/...

But maybe others have different suggestions?

Fixing the style of the #include between these headers at least unblocks
experimentation with installing them as they now should work when
installed in these locations.

llvm-svn: 162822
 2012-08-29 02:27:54 +00:00
Kostya Serebryany 66a37f3aef [asan] one more fix for windows build 
llvm-svn: 162762
 2012-08-28 15:25:07 +00:00
Kostya Serebryany 7575968aa4 [asan] actually move StackTrace to sanitizer_common 
llvm-svn: 162757
 2012-08-28 14:11:57 +00:00
Kostya Serebryany ccc470c499 [asan] some renaming before we move StackTrace into sanitizer_common (part 2) 
llvm-svn: 162748
 2012-08-28 11:54:51 +00:00