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3096 Commits

Author SHA1 Message Date
Kostya Serebryany e402b431c0 [msan] add __libc_memalign interceptor; add a regression test for the existing bug with dtls support in msan 
llvm-svn: 199980
 2014-01-24 09:14:11 +00:00
Alexey Samsonov c496eba75f Don't create check-ubsan and check-dfsan commands if they are not supported on this platform 
llvm-svn: 199979
 2014-01-24 08:06:21 +00:00
Joerg Sonnenberger 25468a2ab4 Add end of function marker, which can be used on ELF to correctly set 
the function size.

llvm-svn: 199914
 2014-01-23 18:31:46 +00:00
Sergey Matveev 9b068a2c06 [lsan] Expand a comment to document our dynamic TLS hack. 
llvm-svn: 199900
 2014-01-23 15:10:35 +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 20513c0937 [asan] More buffering in report printing. 
llvm-svn: 199888
 2014-01-23 11:51:03 +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 631bd92292 [asan] Print shadow memory and legend as a single printf call. 
llvm-svn: 199878
 2014-01-23 10:52:33 +00:00
Evgeniy Stepanov 4819d28e53 [asan] clang-format part of asan_report.cc 
llvm-svn: 199877
 2014-01-23 10:49:47 +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
Evgeniy Stepanov b1fa81047a [msan] Fix GCC warnings. 
warning: ISO C99 requires rest arguments to be used [enabled by default]
 INTERCEPTOR(char *, dlerror) {

warning: invoking macro INTERCEPTOR argument 3: empty macro arguments are undefined in ISO C90 and ISO C++98 [enabled by default]
llvm-svn: 199873
 2014-01-23 08:43:12 +00:00
Evgeniy Stepanov 1a9f5720d8 [asan] Enable replacement new/delete on Android. 
New/delete implementations in system libraries almost always are built without
frame pointers. As we switched to frame pointer based unwinder on ARM, they no
longer work for us, resulting in broken allocation/deallocation stacks.

Note that this does not work with statically linked
libstdc++/libc++/libstlport.

llvm-svn: 199872
 2014-01-23 08:14:20 +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
Tim Northover bea1cafde8 Macho-embedded: update build script for newer Clang behaviour. 
Clang now uses the *-apple-macho triples for embedded targets using MachO. The
environment makes less pretences to be running an actual Mach kernel with all
the support that would imply, so a few changes are needed to the build scripts:
    
+ The Apple way of detecting endianness applies in all cases so drop the
  __MACH__ test.
+ A quick rename since "darwin_embedded" no longer makes any sense. If there's
  no Mach going on, there's certainly no Darwin.
+ Change how we test for support for a platform. The functions we build don't
  need any SDK support (stdio.h, ...) so we don't need to check for it.

llvm-svn: 199731
 2014-01-21 12:38:02 +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 9fcb4c4a6e [asan] one more test for https://code.google.com/p/address-sanitizer/issues/detail?id=258 
llvm-svn: 199723
 2014-01-21 10:57:07 +00:00
Kostya Serebryany 4871067a55 [asan] relax the checks inside __sanitizer_annotate_contiguous_container: they are too optimistic due to https://code.google.com/p/address-sanitizer/issues/detail?id=258. 
llvm-svn: 199715
 2014-01-21 09:53:49 +00:00
Evgeniy Stepanov e98f9099a9 [msandr] Access app TLS directly in native exec mode. 
In optimized hybrid execution we do not use DynamoRIO private loader, which
mangles TLS access, so we can access the application's TLS directly.

Patch by Qin Zhao.

llvm-svn: 199655
 2014-01-20 13:09:29 +00:00
Nick Lewycky 62fd6778f5 Fix think-o from r199332 -- write to the new_filename we're building, not 
filename the global variable.

llvm-svn: 199572
 2014-01-19 07:37:29 +00:00
Kostya Serebryany 123994c4a6 [asan] use correct type when computing shadow address in allocator (caused SEGV when asan run-time is built with gcc 4.8.2 on 32-bit arch) 
llvm-svn: 199544
 2014-01-18 09:38:31 +00:00
Joerg Sonnenberger a9b3aee516 Support NetBSD/ARM. 
llvm-svn: 199492
 2014-01-17 14:06:22 +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
Evgeniy Stepanov 877bb8ba59 [asan] Fix a build warning on windows. 
llvm-svn: 199390
 2014-01-16 14:21:17 +00:00
Joerg Sonnenberger da93c0f37c Add missing __aeabi_fcmpun alias to match C version. 
llvm-svn: 199386
 2014-01-16 13:55:24 +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
Evgeniy Stepanov 364bfdf4c9 [asan] Fix a bunch of style issues. 
llvm-svn: 199380
 2014-01-16 13:17:13 +00:00
Evgeniy Stepanov fe906a1df6 [asan] Restore lost -pie in Android tests. 
llvm-svn: 199379
 2014-01-16 13:11:37 +00:00
Evgeniy Stepanov c61623b170 [asan] Implement delayed activation of AddressSanitizer 
This change adds ASAN_OPTIONS=start_deactivated=1 flag. When present, ASan will
start in "deactivated" mode, with no heap poisoning, no quarantine, no stack
trace gathering, and minimal redzones. All this features come back when
__asan_init is called for the constructor of an instrumented library.

The primary use case for this feature is Android. Code itself is not
Android-specific, and this patch includes a Linux test for it.

llvm-svn: 199377
 2014-01-16 12:31:50 +00:00
Evgeniy Stepanov 780d85a8ef [asan] Remove leftover use of -fsanitize-address-zero-base-shadow. 
llvm-svn: 199373
 2014-01-16 11:42:40 +00:00
Evgeniy Stepanov e259b658e4 [asan] Nuke ASAN_FLEXIBLE_MAPPING_AND_OFFSET. 
llvm-svn: 199370
 2014-01-16 10:16:19 +00:00
Joerg Sonnenberger ef0cbe9366 ARM's @ comment mode strikes again. Use %function on ARM. 
llvm-svn: 199342
 2014-01-16 00:36:49 +00:00
Bob Wilson e38cc76c32 Remove support for armv7f slice. <rdar://problem/12478440> 
This was never used for anything so we should just get rid of it.

llvm-svn: 199333
 2014-01-15 21:05:20 +00:00
Joerg Sonnenberger c989455e6d Avoid shadowing the global filename. Reorg mangle_filename to be more 
precise in the length accounting and use memcpy instead of
strcpy/strcat.

Differential Revision: http://llvm-reviews.chandlerc.com/D2547

llvm-svn: 199332
 2014-01-15 20:57:10 +00:00
Kostya Serebryany 06222915cf [lsan] remove LeakSanitizerIsTurnedOffForTheCurrentProcess (this was a bad idea), leave __lsan_is_turned_off 
llvm-svn: 199304
 2014-01-15 08:04:21 +00:00
Joerg Sonnenberger 197568a02f Declare assembler functions as symbols of type function for ELF. 
Fixes dynamically linked programs on NetBSD/i386.

llvm-svn: 199273
 2014-01-14 23:31:23 +00:00
Kostya Serebryany 6e53cfc1ac [tsan] one more explicit memset in tsan rtl (to please gcc 4.8.2) 
llvm-svn: 199216
 2014-01-14 15:00:10 +00:00
Kostya Serebryany 19e6e4a445 [tsan] reduce the size of stack frame in MapRodata to please gcc 4.8.2 
llvm-svn: 199200
 2014-01-14 10:25:42 +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
Kostya Serebryany 2b76278d38 [lsan] handle 'new T[0]' where T is a type with DTOR; fixes https://code.google.com/p/address-sanitizer/issues/detail?id=257 
llvm-svn: 198932
 2014-01-10 10:48:01 +00:00