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1059 Commits

Author SHA1 Message Date
Alexander Potapenko e925e53114 Fix compilation: don't convert NULL to a pointer-incompatible type. 
llvm-svn: 200536
 2014-01-31 11:44:15 +00:00
Alexander Potapenko d5802fe548 Make signal-related functions use __sanitizer_* structures instead of __sanitizer_kernel_* ones. 
Also rename internal_sigaction() into internal_sigaction_norestorer(), as this function doesn't fully
implement the sigaction() functionality on Linux.

This change is a part of refactoring intended to have common signal handling behavior in all tools.

llvm-svn: 200535
 2014-01-31 11:29:51 +00:00
Dmitry Vyukov e63a09adb6 tsan: fix Go build 
Go linker does not like function-static objects.

llvm-svn: 200534
 2014-01-31 11:20:55 +00:00
Timur Iskhodzhanov 00aa75b774 Move /FS to SANITIZER_COMMON_CFLAGS 
llvm-svn: 200485
 2014-01-30 19:48:13 +00:00
Timur Iskhodzhanov 272502656e Add an /FS flag to the sanitizer_common CMake to make it buildable with VS2013 
llvm-svn: 200480
 2014-01-30 18:56:06 +00:00
Evgeniy Stepanov 3f6af151df [sanitizer] Fix typo that breaks shmctl() interceptor. 
https://code.google.com/p/address-sanitizer/issues/detail?id=259

llvm-svn: 200468
 2014-01-30 14:31:26 +00:00
Sergey Matveev be68311660 [msan] Intercept *getxattr and *listxattr. 
llvm-svn: 200464
 2014-01-30 12:21:12 +00:00
Kostya Serebryany b22298af9a [asan] re-enable __tls_get_addr interceptor with a proper fix (use __attribute__((tls_model(initial-exec)))) 
llvm-svn: 200463
 2014-01-30 09:25:48 +00:00
Kostya Serebryany 409d26ac5e [asan] disable __tls_get_addr interceptor while I am investigating why it causes trouble; few more debugging 
llvm-svn: 200462
 2014-01-30 09:00:42 +00:00
Kostya Serebryany cda06acd31 [asan] fix build on Mac (hopefully) 
llvm-svn: 200386
 2014-01-29 10:26:38 +00:00
Kostya Serebryany 71788fac2a [asan] experimental intercetor for __tls_get_addr. So far it does nothing interesting, actual usage will come later. See https://groups.google.com/forum/#!topic/address-sanitizer/BfwYD8HMxTM for background 
llvm-svn: 200384
 2014-01-29 09:29:16 +00:00
Alexander Potapenko b0930f5c04 [ASan] Reinstate ASAN_LOW_MEMORY, which has nothing to do with signal handling and thus should not be moved to common. 
llvm-svn: 200319
 2014-01-28 14:17:16 +00:00
Alexander Potapenko 31e24962f4 [ASan] Remove an accidentally added include of signal.h 
llvm-svn: 200318
 2014-01-28 14:10:06 +00:00
Alexander Potapenko d8d490ed50 [ASan] Move the sigaltstack() bits to sanitizer_common. 
This change is a part of refactoring intended to have common signal handling behavior in all tools.
Note that this particular change doesn't enable use_sigaltstack support in every tool.

llvm-svn: 200310
 2014-01-28 11:12:29 +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 7fe86589f1 [sanitizer] revert r200197: the buggy kernel (https://bugzilla.kernel.org/show_bug.cgi?id=67651) is almost unusable with asan even with this workaround (too slow), so this workaround makes no sense. The asan/msan bootstrap bot was changed to use a non-buggy kernel 
llvm-svn: 200217
 2014-01-27 13:05:09 +00:00
Evgeniy Stepanov 067f54718f [msan] Disable mmap outside of application address range. 
llvm-svn: 200200
 2014-01-27 09:12:22 +00:00
Kostya Serebryany 0a5049b780 [sanitizer] increase the mmap granularity in sanitizer allocator from 2^16 to 2^18. This is a partial workaround for the fresh Kernel bug https://bugzilla.kernel.org/show_bug.cgi?id=67651 
llvm-svn: 200197
 2014-01-27 07:35:32 +00:00
Dmitry Vyukov 16e7a758b0 tsan: do not deadlock on fork 
Currently correct programs can deadlock after fork, because atomic operations and async-signal-safe calls are not async-signal-safe under tsan.
With this change:
- if a single-threaded program forks, the child continues running with verification enabled (the tsan background thread is recreated as well)
- if a multi-threaded program forks, then the child runs with verification disabled (memory accesses, atomic operations and interceptors are disabled); it's expected that it will exec soon anyway
- if the child tries to create more threads after multi-threaded fork, the program aborts with error message
- die_after_fork flag is added that allows to continue running, but all bets are off

http://llvm-reviews.chandlerc.com/D2614

llvm-svn: 199993
 2014-01-24 12:33:35 +00:00
Alexey Samsonov 1d028b8a9f [Sanitizer] Fix false positive in snprintf interceptor - take the number of actually written symbols from real snprintf call. 
llvm-svn: 199899
 2014-01-23 15:09:38 +00:00
Alexey Samsonov 902bb51612 [Sanitizer] Fix false positive in printf interceptors: properly handle precision for %s 
llvm-svn: 199895
 2014-01-23 14:35:28 +00:00
Evgeniy Stepanov 350fe4b1af [asan] Android logging. 
This change duplicates all ASan output to system log on Android.

llvm-svn: 199887
 2014-01-23 11:34:41 +00:00
Evgeniy Stepanov 6975704f62 [sanitizer] Replace inline with INLINE. 
llvm-svn: 199883
 2014-01-23 11:22:04 +00:00
Evgeniy Stepanov 04c5a836a2 [sanitizer] Add a sanity check. 
llvm-svn: 199880
 2014-01-23 11:01:07 +00:00
Evgeniy Stepanov 43d1888285 [sanitizer] Fix format string mismatches found by format attributes added in r199874. 
llvm-svn: 199879
 2014-01-23 10:57:08 +00:00
Evgeniy Stepanov 29b7866c6c [sanitizer] Add printf format attributes. 
These were lost in a refactoring a long time ago.

llvm-svn: 199874
 2014-01-23 08:58:34 +00:00
Dmitry Vyukov db1ad12ae2 asan: fix atomic operations on ARM 
implement correct atomic load/store for ARM
add test for atomic load/store
http://llvm-reviews.chandlerc.com/D2582

llvm-svn: 199802
 2014-01-22 14:13:37 +00:00
Alexey Samsonov 8c03475f01 [Sanitizer] try harder to fix Werror build break after r199729 
llvm-svn: 199736
 2014-01-21 13:06:38 +00:00
Alexey Samsonov 39dbd7cc2c [Sanitizer] Update file names now that we intercept both scanf and printf 
llvm-svn: 199735
 2014-01-21 13:01:20 +00:00
Alexey Samsonov 20494ca293 Fix unused function warning from r199729 
llvm-svn: 199730
 2014-01-21 12:16:19 +00:00
Alexey Samsonov 00cd273c46 Sanitize printf functions. 
Intercept and sanitize arguments passed to printf functions in ASan and TSan
(don't do this in MSan for now). The checks are controlled by runtime flag
(off by default for now).

Patch http://llvm-reviews.chandlerc.com/D2480 by Yuri Gribov!

llvm-svn: 199729
 2014-01-21 11:58:33 +00:00
Evgeniy Stepanov e676aadecf [asan] Enable frame pointer based unwinder on ARM. 
This code works with AAPCS-style {fp, lr} frames. Unlike linux perf, it does
not unwind through code compiled with -mapcs-frame (which Clang does not
support anyway).

llvm-svn: 199725
 2014-01-21 11:04:58 +00:00
Alexey Samsonov 0714b7b31b [Sanitizer] Support %.*s in internal printf implementation. Patch by Yuri Gribov. 
llvm-svn: 199724
 2014-01-21 10:59:44 +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
Alexey Samsonov a64851bccb [Sanitizer] Remove empty method 
llvm-svn: 199481
 2014-01-17 08:39:05 +00:00
Alexey Samsonov 4d075df406 [Sanitizer] Add basic support for using libbacktrace in symbolizer. 
This change allows to compile sanitizer sources so that *san runtime
will attempt to use libbacktrace and/or libiberty for symbolization
(instead of communicating with llvm-symbolizer).

I've tested this patch by manually defining SANITIZER_LIBBACKTRACE and/or
SANITIZER_CP_DEMANGLE, linking with necessary libraries and verifying that
all tests from ASan test suite work.

Based on patches by Jakub Jelinek!

llvm-svn: 199384
 2014-01-16 13:48:15 +00:00
Kostya Serebryany 47d5569de1 [asan] Include <sys/stat.h> if __x86_64__ is defined 
struct stat defined in <asm/stat.h> is incorrect for x32.  <asm/stat.h>
is included to get struct __old_kernel_stat.  But struct __old_kernel_stat
isn't used for x86-64 nor x32.  This patch includes <sys/stat.h> instead
of <asm/stat.h> and comments out size check of struct __old_kernel_stat
for x86-64.

Patch by H.J. Lu

llvm-svn: 199192
 2014-01-14 07:38:53 +00:00
Kostya Serebryany d651412cd4 [asan] fix the ppc32 build (by Jakub Jelinek). Note that the LLVM build still builds only for 64-bit PowerPC, and not for 32-bit 
llvm-svn: 199090
 2014-01-13 10:19:12 +00:00
Dmitry Vyukov 5b57ea7a24 tsan: fix Go build 
Currently fails with:
gotsan.cc:7686:40: error: the address of 'int __sanitizer_pthread_attr_getstack(void*, void**, size_t*)' will always evaluate as 'true' [-Werror=address]

llvm-svn: 198261
 2013-12-31 09:38:23 +00:00
Chandler Carruth a989fb5ce7 Fix an ODR violation in the sanitizer runtimes. 
A helper function is a C++ function, and so even though one of the two
definitions is weak, it still technically triggers the ODR. Perhaps
these two definitions are ODR equivalent, but I'm not even confident in
that.

Instead, just define the function once, declare it as weak, and use
a wrapper that is clearly file-local. This avoids two definitions. Also
make the function extern "C" so that we can't even mess up the type
signature somehow or otherwise fail to match up the weak declaration
here with the interceptor defined elsewhere.

llvm-svn: 198253
 2013-12-30 23:36:11 +00:00
Alexander Potapenko 79bb924e17 [libsanitizer] fix lint errors 
llvm-svn: 198209
 2013-12-30 11:12:11 +00:00
Alexander Potapenko e93e87369f [libsanitizer] Remove the redundant spaces between '#' and 'define'. 
These definitions weren't included in any #ifdef blocks, and the spaces were placed inconsistently.

llvm-svn: 198207
 2013-12-30 09:22:06 +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
Alexey Samsonov 23347de6ef [Sanitizer] Add Symbolizer::GetModuleNameAndOffsetForPC() and use it in LSan suppression matching. 
This allows us to avoid retrieving file/line info for suppressed modules.

llvm-svn: 198025
 2013-12-25 20:15:46 +00:00
Alexey Samsonov 782ad0eb71 [Sanitizer] Remove now unused symbolization functionality from MemoryMappingLayout 
llvm-svn: 198014
 2013-12-25 12:11:06 +00:00
Alexey Samsonov 5746c07629 [Sanitizer] Use different MemoryMappingLayout::DumpListOfModules on Linux and Mac. 
Make a unit test added in r198004 more robust.

llvm-svn: 198012
 2013-12-25 11:29:19 +00:00
Alexey Samsonov bf658026c1 [Sanitizer] Properly specify linux-only unit test. 
llvm-svn: 198007
 2013-12-25 09:31:42 +00:00
Alexey Samsonov ca7a213118 [Sanitizer] Don't use MemoryMappingLayout in StackTrace::PrintStack - it is now a responsibility of Symbolizer class. 
llvm-svn: 198006
 2013-12-25 09:29:54 +00:00
Alexey Samsonov 64ffa598ce [Sanitizer] Teach MemoryMappingLayout to dump all loaded modules. 
Use this to implement GetListOfModules() on Mac and on Android
(on Linux we use dl_iterate_phdr).

llvm-svn: 198004
 2013-12-25 08:39:38 +00:00
Alexey Samsonov 2f392d237c [Sanitizer] Move OS-specific code for MemoryMappingLayout into separate source files. 
llvm-svn: 198003
 2013-12-25 08:01:16 +00:00