Commit Graph

252 Commits

Author SHA1 Message Date
Marcin Koscielnicki c8dda336bb [sanitizer] [SystemZ] Abort if the kernel might be vulnerable to CVE-2016-2143.
In short, CVE-2016-2143 will crash the machine if a process uses both >4TB
virtual addresses and fork().  ASan, TSan, and MSan will, by necessity, map
a sizable chunk of virtual address space, which is much larger than 4TB.
Even worse, sanitizers will always use fork() for llvm-symbolizer when a bug
is detected.  Disable all three by aborting on process initialization if
the running kernel version is not known to contain a fix.

Unfortunately, there's no reliable way to detect the fix without crashing
the kernel.  So, we rely on whitelisting - I've included a list of upstream
kernel versions that will work.  In case someone uses a distribution kernel
or applied the fix themselves, an override switch is also included.

Differential Revision: http://reviews.llvm.org/D18915

llvm-svn: 266297
2016-04-14 12:56:24 +00:00
Marcin Koscielnicki 545e507c43 [sanitizer] [SystemZ] Implement internal_mmap.
mmap on s390 is quite a special snowflake: since it has too many
parameters to pass them in registers, it passes a pointer to a struct
with all the parameters instead.

Differential Revision: http://reviews.llvm.org/D18889

llvm-svn: 266295
2016-04-14 12:51:45 +00:00
Kuba Brecka 4c80867ecf [sanitizer] On OS X, verify that interceptors work and abort if not, take 2
On OS X 10.11+, we have "automatic interceptors", so we don't need to use DYLD_INSERT_LIBRARIES when launching instrumented programs. However, non-instrumented programs that load TSan late (e.g. via dlopen) are currently broken, as TSan will still try to initialize, but the program will crash/hang at random places (because the interceptors don't work). This patch adds an explicit check that interceptors are working, and if not, it aborts and prints out an error message suggesting to explicitly use DYLD_INSERT_LIBRARIES.

TSan unit tests run with a statically linked runtime, where interceptors don't work. To avoid aborting the process in this case, the patch replaces `DisableReexec()` with a weak `ReexecDisabled()` function which is defined to return true in unit tests.

Differential Revision: http://reviews.llvm.org/D18212

llvm-svn: 263695
2016-03-17 08:37:25 +00:00
Mohit K. Bhakkad beb155b4fa [ASAN] Add support for mips/mips64 android
Patch by Duane Sand

Reviewers: samsonov

Subscribers: duanesand, jaydeep, sagar, llvm-commits, filcab.

Differential Revision: http://reviews.llvm.org/D17883

llvm-svn: 263621
2016-03-16 08:23:10 +00:00
Mohit K. Bhakkad f4cc1fc7e9 [Sanitizer][MIPS] internal lstat and fstat for mips64
Reviewers: dvyukov

Subscribers: jaydeep, sagar, llvm-commits

Differential Revision: http://reviews.llvm.org/D18078

llvm-svn: 263218
2016-03-11 10:51:03 +00:00
Dimitry Andric b45bf0af91 Retrieve command line arguments and environment correctly on FreeBSD
Summary:
Recently I saw the test `TestCases/Posix/print_cmdline.cc` failing on
FreeBSD, with "expected string not found in input".  This is because
asan could not retrieve the command line arguments properly.

In `lib/sanitizer_common/sanitizer_linux.cc`, this is taken care of by
the `GetArgsAndEnv()` function, but it uses `__libc_stack_end` to get at
the required data.  This variable does not exist on BSDs; the regular
way to retrieve the arguments and environment information is via the
`kern.ps_strings` sysctl.

I added this functionality in sanitizer_linux.cc, as a separate #ifdef
block in `GetArgsAndEnv()`.  Also, `ReadNullSepFileToArray()` becomes
unused due to this change.  (It won't work on FreeBSD anyway, since
`/proc` is not mounted by default.)

Reviewers: kcc, emaste, joerg, davide

Subscribers: llvm-commits, emaste

Differential Revision: http://reviews.llvm.org/D17832

llvm-svn: 263157
2016-03-10 20:22:02 +00:00
Evgeniy Stepanov aa42f29221 [asan] Fix build on Windows and PowerPC.
llvm-svn: 260175
2016-02-09 00:28:57 +00:00
Evgeniy Stepanov bc937a10a2 [asan] Remove leftover debug print statement.
llvm-svn: 260165
2016-02-08 22:54:46 +00:00
Evgeniy Stepanov 52f6c262d9 [asan] Implement SEGV read vs write detection for ARM and AArch64.
llvm-svn: 260163
2016-02-08 22:50:25 +00:00
Dimitry Andric 927e986ac4 Fix build on FreeBSD after r259741.
On FreeBSD, the uc_mcontext member of ucontext_t has a member called
mc_err, which corresponds to the Linux member gregs[REG_ERR].

Reviewed by:	rdivacky@FreeBSD.org

llvm-svn: 260046
2016-02-07 17:40:45 +00:00
Kostya Serebryany 0e05d6eb9c [asan] fix the non-x86 build
llvm-svn: 259745
2016-02-04 02:33:48 +00:00
Kostya Serebryany 2b9be25066 [asan] When catching a signal caused by a memory access, print if it's a READ or a WRITE. This touches win/mac files which I have not tested, if a win/mac bot fails I'll try to quick-fix
llvm-svn: 259741
2016-02-04 02:02:09 +00:00
Anna Zaks c77a080bdb [asan] Add iOS support.
llvm-svn: 259451
2016-02-02 02:01:17 +00:00
Evgeniy Stepanov 2531584daa [asan] Don't use sysconf(_SC_PAGESIZE) on Android.
This is broken in the current (post-MNC) master branch.
Use EXEC_PAGESIZE instead, the same as on x86 Linux.

This change fixes startup crashes in the existing tests on AOSP
master.

llvm-svn: 258706
2016-01-25 19:25:20 +00:00
Maxim Ostapenko 1965cc6258 [asan] Optionally print reproducer cmdline in ASan reports.
Differential Revision: http://reviews.llvm.org/D16070

llvm-svn: 258037
2016-01-18 07:55:12 +00:00
Kostya Serebryany 354bbb2ccd [asan] add option: handle_sigill
llvm-svn: 255588
2015-12-15 00:33:45 +00:00
Bill Schmidt 2979162732 [PPC64, TSAN] LLVM basic enablement of thread sanitizer for PPC64 (BE and LE)
This patch is by Simone Atzeni with portions by Adhemerval Zanella.

This contains the LLVM patches to enable the thread sanitizer for
PPC64, both big- and little-endian.  Two different virtual memory
sizes are supported:  Old kernels use a 44-bit address space, while
newer kernels require a 46-bit address space.

There are two companion patches that will be added shortly.  There is
a Clang patch to actually turn on the use of the thread sanitizer for
PPC64.  There is also a patch that I wrote to provide interceptor
support for setjmp/longjmp on PPC64.

Patch discussion at reviews.llvm.org/D12841.

llvm-svn: 255057
2015-12-08 21:54:39 +00:00
Evgeniy Stepanov 2f107ce132 [asan] Remove the use of system properties on Android.
System properties are not accessible through NDK (we've been using
hacks to get to them) and they are unavailable during ASan
initialization in .preinit_array. Use environment variables and
files instead (ex. ASAN_OPTIONS=include_if_exists=/path).

No test changes. This feature was not tested because the properties
are system-wide and would conflict with the parallel test runner. Yet
another reason to get rid of it.

llvm-svn: 254783
2015-12-04 22:28:27 +00:00
Kuba Brecka 65aa45e872 [tsan] Use re-exec method to enable interceptors on older versions of OS X
In AddressSanitizer, we have the MaybeReexec method to detect when we're running without DYLD_INSERT_LIBRARIES (in which case interceptors don't work) and re-execute with the environment variable set. On OS X 10.11+, this is no longer necessary, but to have ThreadSanitizer supported on older versions of OS X, let's use the same method as well. This patch moves the implementation from `asan/` into `sanitizer_common/`.

Differential Revision: http://reviews.llvm.org/D15123

llvm-svn: 254600
2015-12-03 10:39:43 +00:00
Adhemerval Zanella b0d5dd0199 [lsan] [aarch64] Add support for AArch64
This patch add support for leak sanitizer for aarch64.  Similar to
MIPS it uses a SizeClassAllocator32 due VMA constraints (aarch64
currently supports 39 and 42-bit VMA).

It also fixes the android build issue.

llvm-svn: 250898
2015-10-21 13:08:06 +00:00
Evgeniy Stepanov 437615639f Revert "[lsan] [aarch64] Add support for AArch64"
This reverts commit ea02fa45225c35613bfecab383fb526e24b74497 (r249337).

Reason: broken "ninja AsanUnitTests" on Android/AArch64.
http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux/builds/20675/steps/build%20compiler-rt%20android%2Faarch64/logs/stdio

llvm-svn: 249730
2015-10-08 20:08:30 +00:00
Adhemerval Zanella 5ea8dcb8cf [lsan] [aarch64] Add support for AArch64
This patch add support for leak sanitizer for aarch64.  Similar to
MIPS it uses a SizeClassAllocator32 due VMA constraints (aarch64
currently supports 39 and 42-bit VMA).

llvm-svn: 249337
2015-10-05 19:16:09 +00:00
Vedant Kumar 552c0111f1 [sanitizer_common] Apply modernize-use-nullptr, other minor fixes
- Trim spaces.
- Use nullptr in place of 0 for pointer variables.
- Use '!p' in place of 'p == 0' for null pointer checks.

Patch by Eugene Zelenko!

Differential Revision: http://reviews.llvm.org/D13310

llvm-svn: 248964
2015-09-30 23:52:54 +00:00
Adhemerval Zanella 36b5042753 [compiler-rt] [sanitizers] Add aarch64 syscall optimization support
This patch adds the inline syscall support for aarch64 instead of relying
on the syscall runtime function.

llvm-svn: 245702
2015-08-21 14:50:36 +00:00
Kostya Serebryany cc9fd3cbe9 [sanitizer] 2-nd attempt. Add the flag handle_sigfpe that is default true to handle SIGFPE crashes same as SIGSEV crashes, patch by Karl Skomski. This time the test is enabled only on x86-64 (it broke on ARM)
llvm-svn: 244234
2015-08-06 17:52:54 +00:00
Renato Golin 4ae2e1f575 Revert "[sanitizer] Add the flag handle_sigfpe that is default true to handle SIGFPE crashes same as SIGSEV crashes, patch by Karl Skomski"
This reverts commit r244136, it was breaking the ARM bots for too long. We should investigate it offline.

llvm-svn: 244210
2015-08-06 12:42:46 +00:00
Kostya Serebryany ce1799a83f [sanitizer] Add the flag handle_sigfpe that is default true to handle SIGFPE crashes same as SIGSEV crashes, patch by Karl Skomski
llvm-svn: 244136
2015-08-05 21:19:11 +00:00
Adhemerval Zanella d7984710ae [tsan] Enable tsan for aarch64
This patch enabled TSAN for aarch64 with 39-bit VMA layout.  As defined by
tsan_platform.h the layout used is:

0000 4000 00 - 0200 0000 00: main binary
2000 0000 00 - 4000 0000 00: shadow memory
4000 0000 00 - 5000 0000 00: metainfo
5000 0000 00 - 6000 0000 00: -
6000 0000 00 - 6200 0000 00: traces
6200 0000 00 - 7d00 0000 00: -
7d00 0000 00 - 7e00 0000 00: heap
7e00 0000 00 - 7fff ffff ff: modules and main thread stack

Which gives it about 8GB for main binary, 4GB for heap and 8GB for
modules and main thread stack.

Most of tests are passing, with the exception of:

 * ignore_lib0, ignore_lib1, ignore_lib3 due a kernel limitation for
   no support to make mmap page non-executable.

 * longjmp tests due missing specialized assembly routines.

These tests are xfail for now.

The only tsan issue still showing is:

  rtl/TsanRtlTest/Posix.ThreadLocalAccesses

Which still required further investigation.  The test is disable for
aarch64 for now.

llvm-svn: 244055
2015-08-05 15:17:59 +00:00
Daniel Sanders adf1fcc2a5 Re-commit r243686 - [Sanitizers] [Bug 24151] Generalize type of offset in internal_mmap
The builder remains broken in the same way without this patch so this patch is
innocent.

llvm-svn: 243744
2015-07-31 11:29:25 +00:00
Daniel Sanders 923906a600 Revert r243686 - [Sanitizers] [Bug 24151] Generalize type of offset in internal_mmap
It's implicated in a buildbot failure and while the failure looks unrelated,
this commit is the only probably candidate in the blamelist.

llvm-svn: 243740
2015-07-31 09:04:37 +00:00
Daniel Sanders 043717d572 [Sanitizers] [Bug 24151] Generalize type of offset in internal_mmap
Summary:
Using u64 as type for offset changes its value, changing starting address for map in file.
This patch solves Bug 24151, which raises issue while mapping file in mips32.

Patch by Mohit Bhakkad

Reviewers: dsanders, kcc

Subscribers: hans, llvm-commits, samsonov, nitesh.jain, sagar, bhushan, jaydeep

Differential Revision: http://reviews.llvm.org/D11588

llvm-svn: 243686
2015-07-30 21:00:48 +00:00
Evgeniy Stepanov 30257173b3 [sanitizer] Fix Mac build.
llvm-svn: 243480
2015-07-28 21:01:42 +00:00
Evgeniy Stepanov 7eeb02bd09 [asan] Read process name from /proc/self/cmdline on Linux.
Rename getBinaryBasename() to getProcessName() and, on Linux,
read it from /proc/self/cmdline instead of /proc/self/exe. The former
can be modified by the process. The main motivation is Android, where
application processes re-write cmdline to a package name. This lets
us setup per-application ASAN_OPTIONS through include=/some/path/%b.

llvm-svn: 243473
2015-07-28 20:27:51 +00:00
Evgeniy Stepanov f021b9b3b3 [asan] Fix android system property access on aarch64.
__system_property_get is gone from the NDK headers and libs in 64-bit
toolchains, but it is still exported by platform libc.so.

llvm-svn: 243137
2015-07-24 18:57:44 +00:00
Evgeniy Stepanov 5a268b10b3 [sanitizer] Implement logging to syslog.
Previously, Android target had a logic of duplicating all sanitizer
output to logcat. This change extends it to all posix platforms via
the use of syslog, controlled by log_to_syslog flag. Enabled by
default on Android, off everywhere else.

A bit of cmake magic is required to allow Printf() to call a libc
function. I'm adding a stub implementation to support no-libc builds
like dfsan and safestack.

This is a second attempt. I believe I've fixed all the issues that
prompted the revert: Mac build, and all kinds of non-CMake builds
(there are 3 of those).

llvm-svn: 243051
2015-07-23 22:05:20 +00:00
Evgeniy Stepanov ffbc4ec790 Revert r242975.
Breaks Mac build.

llvm-svn: 242978
2015-07-23 01:29:26 +00:00
Evgeniy Stepanov 4f03227fa2 [sanitizer] Implement logging to syslog.
Previously, Android target had a logic of duplicating all sanitizer
output to logcat. This change extends it to all posix platforms via
the use of syslog, controlled by log_to_syslog flag. Enabled by
default on Android, off everywhere else.

A bit of cmake magic is required to allow Printf() to call a libc
function. I'm adding a stub implementation to support no-libc builds
like dfsan and safestack.

llvm-svn: 242975
2015-07-22 23:57:19 +00:00
Alexey Samsonov e6c614d48a [Sanitizer] Teach ReadFileToBuffer to distinguish empty file from inaccessible file.
Summary:
This fixes https://code.google.com/p/address-sanitizer/issues/detail?id=399
(sanitizers crash with empty suppression files).

Reviewers: kcc

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D11284

llvm-svn: 242594
2015-07-17 23:50:08 +00:00
Evgeniy Stepanov 856b11199f [asan] Fix SanitizerCommon.PthreadDestructorIterations test on Android L.
On Android L, TSD destructors run 8 times instead of 4.
Back to 4 times on the current master branch (as well as on K).

llvm-svn: 240992
2015-06-29 20:28:55 +00:00
Evgeniy Stepanov 2f58bb6a34 [asan] Disable glibc-specific code chunk on Android.
Fixes quarantine_size_mb.cc test on the Android bot.

llvm-svn: 240854
2015-06-26 23:39:23 +00:00
Evgeniy Stepanov e33f64f682 [asan] Fix Android build for API >= 21.
/code/llvm/projects/compiler-rt/lib/sanitizer_common/sanitizer_linux.cc:971:8: error: address of function 'dl_iterate_phdr' will always evaluate to 'true' [-Werror,-Wpointer-bool-conversion]
  if (!dl_iterate_phdr)
      ~^~~~~~~~~~~~~~~
/code/llvm/projects/compiler-rt/lib/sanitizer_common/sanitizer_linux.cc:971:8: note: prefix with the address-of operator to silence this warning
  if (!dl_iterate_phdr)
       ^
       &

llvm-svn: 239321
2015-06-08 18:15:52 +00:00
Yury Gribov c019a57099 [ASan] Make binary name reader cross-platform.
Differential Revision: http://reviews.llvm.org/D10213

llvm-svn: 239020
2015-06-04 07:29:43 +00:00
Evgeniy Stepanov 6153377219 [asan] Fall back to /proc/$PID/maps on Android L.
dl_iterate_phdr is somewhat broken in L (see the code for details).
We add runtime OS version detection and fallback to /proc/maps on L or earlier.
This fixes a number of ASan tests on L.

llvm-svn: 236628
2015-05-06 18:55:31 +00:00
Sagar Thakur 26f165b04e [ASan][MIPS] Fix null_deref.cc test on MIPS64
Symbol for pc used in ucontext->uc_mcontext was wrong.

Reviewers: dsanders, kcc, samsonov
Subscribers: llvm-commits, mohit.bhakkad, jaydeep
Differential Revision: http://reviews.llvm.org/D9246

llvm-svn: 236572
2015-05-06 06:53:09 +00:00
Sagar Thakur 1d2854477c [sanitizer][MIPS] Implement clone for MIPS
Reviewers: kcc, samsonov, earthdok
Subscribers: dsanders, jaydeep, Anand.Takale, mohit.bhakkad, llvm-commits
Differential Revision: http://reviews.llvm.org/D8318

llvm-svn: 236570
2015-05-06 05:38:21 +00:00
Kostya Serebryany f3343c5b38 [asan] fix IsDeadlySignal
llvm-svn: 236545
2015-05-05 21:38:50 +00:00
Kostya Serebryany b044353bb2 [asan] under handle_abort=1 option intercept SIGABRT in addition to SIGSEGV/SIGBUS. Among other things this will allow to set up a death callback for SIGABRT and thus properly handle assert() in lib/Fuzzer
llvm-svn: 236474
2015-05-05 01:37:33 +00:00
Viktor Kutuzov 8dee8575c6 [Sanitizers] Do not call internal_sigdelset() on non-Linux
Differential Revision: http://reviews.llvm.org/D9220

llvm-svn: 235701
2015-04-24 07:48:26 +00:00
Dmitry Vyukov 3658f6fcc4 tsan: support setuid call
Currently the call hangs because the background thread
does not handle SIGSETXID signal.

llvm-svn: 235581
2015-04-23 09:33:27 +00:00
Timur Iskhodzhanov 3d6c6fbef2 Cast an argument to mprotect syscall to uptr to fix X32
llvm-svn: 234748
2015-04-13 12:13:03 +00:00
Timur Iskhodzhanov ea1f332b79 Split Mprotect into MmapNoAccess and MprotectNoAccess to be more portable
On Windows, we have to know if a memory to be protected is mapped or not.
On POSIX, Mprotect was semantically different from mprotect most people know.

llvm-svn: 234602
2015-04-10 15:02:19 +00:00
Viktor Kutuzov 60f0aa8a42 [Sanitizers] Fix internal_ftruncate() to work on FreeBSD
Differential Revision: http://reviews.llvm.org/D8551

llvm-svn: 233003
2015-03-23 19:44:35 +00:00
Alexander Potapenko 141e420a81 [ASan] Distinguish between read, write and read-write file access modes in OpenFile.
This is to fix mapping coverage files into memory on OSX.

llvm-svn: 232936
2015-03-23 10:10:46 +00:00
Viktor Kutuzov 74c2001f3f [Sanitizers] Fix sanitizers to build on FreeBSD.
Differential Revision: http://reviews.llvm.org/D8175

llvm-svn: 232072
2015-03-12 18:10:06 +00:00
Dmitry Vyukov b79ac88155 asan: fix signal handling during stoptheworld
The problem is that without SA_RESTORER flag, kernel ignores the handler. So tracer actually did not setup any handler.
Add SA_RESTORER flag when setting up handlers.
Add a test that causes SIGSEGV in stoptheworld callback.
Move SignalContext from asan to sanitizer_common to print better diagnostics about signal in the tracer thread.

http://reviews.llvm.org/D8005

llvm-svn: 230978
2015-03-02 17:36:02 +00:00
Mohit K. Bhakkad 36f974d76b [LSan] [MIPS] adding support of LSan for mips64/mips64el arch
Patch by Sagar Thakur

Reviewers: petarj, earthdok, kcc.

Subscribers:  samsonov, dsanders, mohit.bhakkad, Anand.Takale, llvm-commits.

Differential Revision: http://reviews.llvm.org/D7013

llvm-svn: 229830
2015-02-19 07:30:39 +00:00
Alexey Samsonov a11a86b9ce [TSan] Fix Go build.
llvm-svn: 227634
2015-01-30 23:04:57 +00:00
Viktor Kutuzov 07e6c00171 [Sanitizers] Introduce GET_LINK_MAP_BY_DLOPEN_HANDLE() macro
Differential Revision: http://reviews.llvm.org/D7233

llvm-svn: 227570
2015-01-30 12:43:52 +00:00
Yury Gribov 2bbad68617 [Sanitizer] Make BlockingMutex really linker initialized.
Differential Revision: http://reviews.llvm.org/D7171

llvm-svn: 227560
2015-01-30 06:20:43 +00:00
Kostya Serebryany 3c052cc051 [asan] use getrusage as an alternative to reading /proc/self/statm. Also move GetRSS to sanitizer_linux_libcdep.cc (no change in the function itself)
llvm-svn: 227416
2015-01-29 02:54:39 +00:00
Jay Foad 335c08e56c [ASan] Handle SIGBUS on Linux.
Summary:
On Linux in some situations we can get SIGBUS instead of SIGSEGV on
stack overflow, so asan should handle SIGBUS as well as SIGSEGV.

https://code.google.com/p/address-sanitizer/issues/detail?id=369

Reviewers: samsonov, glider

Reviewed By: glider

Subscribers: glider, llvm-commits

Differential Revision: http://reviews.llvm.org/D6923

llvm-svn: 225630
2015-01-12 13:46:37 +00:00
Alexey Samsonov 7eba6dfdaa [TSan] Fix Go build.
llvm-svn: 225336
2015-01-07 02:12:41 +00:00
Evgeniy Stepanov 98211121ab [sanitizer] mmap2 syscall works with 4096-byte units instead of bytes.
Ouch.

llvm-svn: 224819
2014-12-24 12:58:09 +00:00
Jay Foad d348d7c757 [Sanitizer] Fix GetRSS on Linux with non-4k pages
Summary:
The numbers in /proc/self/statm are in pages, not in fixed 4k units.
This fixes Linux/hard_rss_limit_mb_test.cc on my PowerPC64 box which
has 64k pages.

Reviewers: kcc, willschm

Reviewed By: willschm

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D6717

llvm-svn: 224522
2014-12-18 16:24:01 +00:00
Kostya Serebryany 43eb7735f2 [asan] new flag: hard_rss_limit_mb
llvm-svn: 224353
2014-12-16 19:13:01 +00:00
Mohit K. Bhakkad a94a037528 internal_stat for mips64
llvm-svn: 224326
2014-12-16 07:11:08 +00:00
Dmitry Vyukov a1038b1081 tsan: fix Go build
GetRSS is used in Go build.

llvm-svn: 224023
2014-12-11 16:12:45 +00:00
Kostya Serebryany 6c54a6b5dd [asan] move GetRSS from tsan to sanitizer_common
llvm-svn: 223730
2014-12-09 01:22:59 +00:00
Alexey Samsonov 3da2b06593 Add missing #include to fix Android build.
llvm-svn: 223157
2014-12-02 21:40:41 +00:00
Dmitry Vyukov 8a3934f85b sanitizer_common: fix function w/o return
When SANITIZER_USES_CANONICAL_LINUX_SYSCALLS the function misses return statement.

llvm-svn: 222532
2014-11-21 13:55:19 +00:00
Alexey Samsonov 4925fd4b05 Fix -Wcast-qual warnings in sanitizers
llvm-svn: 221936
2014-11-13 22:40:59 +00:00
Yury Gribov ecfa592671 Removed r221896, it seems to break build in various ways.
llvm-svn: 221912
2014-11-13 19:37:30 +00:00
Yury Gribov 17072ef348 [ASan] Add process basename to log name and error message to simplify analysis of sanitized systems logs.
Reviewed at http://reviews.llvm.org/D5724

llvm-svn: 221896
2014-11-13 16:01:23 +00:00
Evgeniy Stepanov bc496dab07 [asan] Delay system log initialization on Android.
Writing to system log requires libc interceptors to be initialized.
Fixes crashes with verbosity=1 on newer Android builds.

llvm-svn: 217764
2014-09-15 11:37:40 +00:00
Viktor Kutuzov d0907ae222 Fix getting environment variables for sanitizers needs on FreeBSD
Differential Revision: http://reviews.llvm.org/D4229

llvm-svn: 212690
2014-07-10 08:53:29 +00:00
Dmitry Vyukov f9c22916d5 tsan: fix freebsd build
freebsd does not have /proc/self/environ

llvm-svn: 211417
2014-06-20 22:49:41 +00:00
Dmitry Vyukov 3fc095e031 tsan: remove unused header include
llvm-svn: 211385
2014-06-20 18:28:34 +00:00
Viktor Kutuzov 9cd9b4ce0c Support getting executable's name for sanitizers needs on FreeBSD
llvm-svn: 209805
2014-05-29 12:12:42 +00:00
Alexey Samsonov 5bcd1d8a8f [Sanitizer] Always prefer cached contents of /proc/self/exe if it's available
llvm-svn: 209773
2014-05-28 21:23:53 +00:00
Evgeniy Stepanov 567e516015 [asancov] Write coverage directly to a memory-mapped file.
This way does not require a __sanitizer_cov_dump() call. That's
important on Android, where apps can be killed at arbitrary time.

We write raw PCs to disk instead of module offsets; we also write
memory layout to a separate file. This increases dump size by the
factor of 2 on 64-bit systems.

llvm-svn: 209653
2014-05-27 12:37:52 +00:00
Greg Fitzgerald 7b15cf8884 On AArch64, use clone() instead of fork()
Patch by Gideon Billings.

Differential Revision: http://reviews.llvm.org/D3903

llvm-svn: 209641
2014-05-26 23:44:55 +00:00
Kostya Serebryany b9aa538db1 [sanitizer] fix linux_dirent for SANITIZER_X32; based on patch by H.J. Lu
llvm-svn: 209281
2014-05-21 08:21:13 +00:00
Kostya Serebryany 84019ff7e5 Cast pointers to uptr when calling internal_syscall
For Linux/x86-64, pointers passed to internal_syscall should be casted
to uptr first.  Otherwise, they won't be properly extended to 64-bit for
x32.
Patch by H.J. Lu

llvm-svn: 209278
2014-05-21 07:49:03 +00:00
Sergey Matveev 6d8b9a747c [sanitizer] Fix go build following r209121.
llvm-svn: 209136
2014-05-19 16:08:53 +00:00
Sergey Matveev 6cb47a083b [sanitizer] Support sandboxing in sanitizer coverage.
Summary:
Sandboxed code may now pass additional arguments to
__sanitizer_sandbox_on_notify() to force all coverage data to be dumped to a
single file (the default is one file per module). The user may supply a file or
socket to write to. The latter option can be used to broker out the file writing
functionality. If -1  is passed, we pre-open a file.

llvm-svn: 209121
2014-05-19 12:53:03 +00:00
Alexander Potapenko 291b827890 [libsanitizer] Fix the return type of internal_fork
llvm-svn: 208714
2014-05-13 17:31:09 +00:00
Alexander Potapenko 4a6cac4382 [libsanitizer] Use internal_fork() to spawn the symbolizer process.
This should fix https://code.google.com/p/thread-sanitizer/issues/detail?id=61

llvm-svn: 208707
2014-05-13 16:17:54 +00:00
Alexey Samsonov 18adbc361a Remove sanitizer_linux_libcdep.cc from TSan-Go build
llvm-svn: 203238
2014-03-07 13:17:32 +00:00
Alexey Samsonov 78a6d2073f [FreeBSD] Port sanitizers' syscalls.
Patch by Viktor Kutuzov!

llvm-svn: 203227
2014-03-07 10:03:54 +00:00
Evgeniy Stepanov f4dcf77623 [asan] Fix printing of long reports to logcat on Android.
__android_log_write has an implicit message length limit.
Print one line at a time.

llvm-svn: 202250
2014-02-26 09:39:55 +00:00
Kostya Serebryany c98ce28533 [sanitizer] AArch64 sanitizer support; patch by Christophe Lyon and Yvan Roux
llvm-svn: 201303
2014-02-13 07:50:20 +00:00
Evgeniy Stepanov 01cd8ae204 [asan] Read extra flags from a system property on activation on Android.
llvm-svn: 200550
2014-01-31 14:36:55 +00:00
Alexander Potapenko 789e3e1b7c [ASan] Move the SIGSEGV/SIGBUS handling to sanitizer_common
This change is a part of refactoring intended to have common signal handling behavior in all tools.
This particular CL moves InstallSignalHandlers() into sanitizer_common (making it InstallDeadlySignalHandlers()), but doesn't enable default signal handlers for any tool other than ASan.

llvm-svn: 200542
2014-01-31 13:10:07 +00:00
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
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
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
Kostya Serebryany 82d0679e92 [asan] attempting to fix x32 build (see http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59018)
llvm-svn: 194155
2013-11-06 17:47:39 +00:00
Peter Collingbourne 791e65dcfb Overhaul the symbolizer interface.
This moves away from creating the symbolizer object and initializing the
external symbolizer as separate steps.  Those steps now always take place
together.

Sanitizers with a legacy requirement to specify their own symbolizer path
should use InitSymbolizer to initialize the symbolizer with the desired
path, and GetSymbolizer to access the symbolizer.  Sanitizers with no
such requirement (e.g. UBSan) can use GetOrInitSymbolizer with no need for
initialization.

The symbolizer interface has been made thread-safe (as far as I can
tell) by protecting its member functions with mutexes.

Finally, the symbolizer interface no longer relies on weak externals, the
introduction of which was probably a mistake on my part.

Differential Revision: http://llvm-reviews.chandlerc.com/D1985

llvm-svn: 193448
2013-10-25 23:03:29 +00:00
Peter Collingbourne b745eec4e4 Use internal_memset to initialize this variable.
Otherwise, the compiler may use memset in non-optimized builds, which is
forbidden in the nolibc part of the runtime.

llvm-svn: 193098
2013-10-21 18:11:57 +00:00