Commit Graph

1729 Commits

Author SHA1 Message Date
David Majnemer 69898e6bc5 Attempt to reduce flakiness in workingset-samples.cpp
The test is matching against 'KB' but it looks like the output can be
'MB'.

llvm-svn: 274587
2016-07-06 00:12:43 +00:00
Ryan Govostes b395d7271d [asan] Update tests according to r274578
llvm-svn: 274579
2016-07-05 21:53:23 +00:00
Kuba Brecka c54b108cf8 [tsan] Synchronize leaving a GCD group with notifications
In the patch that introduced support for GCD barrier blocks, I removed releasing a group when leaving it (in dispatch_group_leave). However, this is necessary to synchronize leaving a group and a notification callback (dispatch_group_notify). Adding this back, simplifying dispatch_group_notify_f and adding a test case.

Differential Revision: http://reviews.llvm.org/D21927

llvm-svn: 274549
2016-07-05 13:48:54 +00:00
Kuba Brecka 09d3e53a93 [tsan] dispatch_once interceptor will cause a crash/deadlock when the original dispatch_once is used
Because we use SCOPED_TSAN_INTERCEPTOR in the dispatch_once interceptor, the original dispatch_once can also be sometimes called (when ignores are enabled or when thr->is_inited is false). However the original dispatch_once function doesn’t expect to find “2” in the storage and it will spin forever (but we use “2” to indicate that the initialization is already done, so no waiting is necessary). This patch makes sure we never call the original dispatch_once.

Differential Revision: http://reviews.llvm.org/D21976

llvm-svn: 274548
2016-07-05 13:39:54 +00:00
Qin Zhao 91ea3fb698 [esan|cfrag] Add struct array access report
Summary:
Adds struct array access counter report.

Updates test struct-simple.cpp.

Reviewers: aizatsky

Subscribers: vitalybuka, zhaoqin, kcc, eugenis, bruening, llvm-commits, kubabrecka

Differential Revision: http://reviews.llvm.org/D21595

llvm-svn: 274421
2016-07-02 03:25:55 +00:00
Kuba Brecka 4357f021e3 [tsan] Relax the "ignored-interceptors.mm" testcase. The test has been flaky because it's detecting a false positive race (coming from a system library) and sometimes that race is detected after we're printing "Done".
llvm-svn: 274346
2016-07-01 12:55:36 +00:00
Etienne Bergeron e6f424460a [compiler-rt] Fix broken unittest using alloca on MSVC.
Summary:
The alloca header is not present on windows.

This test was committed recently:
  http://reviews.llvm.org/D21509
  http://reviews.llvm.org/rL273889

Reviewers: rnk

Subscribers: llvm-commits, wang0109, chrisha, kubabrecka

Differential Revision: http://reviews.llvm.org/D21864

llvm-svn: 274230
2016-06-30 14:37:02 +00:00
Kuba Brecka 4d81bbdf53 [tsan] Stop extending the block’s lifetime in dispatch_group_async
The dispatch_group_async interceptor actually extends the lifetime of the executed block. This means the destructor of the block (and captured variables) is called *after* dispatch_group_leave, which changes the semantics of dispatch_group_async.  This patch fixes that.

Differential Revision: http://reviews.llvm.org/D21816

llvm-svn: 274117
2016-06-29 10:30:50 +00:00
Evgeniy Stepanov 465651fe3d [msan] Fix handling of padding in sendmsg control data.
llvm-svn: 274074
2016-06-28 22:42:31 +00:00
Kuba Brecka f7b9075e52 Adapt the "objc-race.mm" test to use ignore_interceptors_accesses=1. All Obj-C/Darwin tests currently need this to avoid false positives.
llvm-svn: 274014
2016-06-28 13:56:09 +00:00
Kuba Brecka 2621dea6eb [tsan] Add HB edges for GCD barrier blocks
Adding support for GCD barrier blocks in concurrent queues.  This uses two sync object in the same way as read-write locks do.  This also simplifies the use of dispatch groups (the notifications act as barrier blocks).

Differential Revision: http://reviews.llvm.org/D21604

llvm-svn: 273893
2016-06-27 16:49:23 +00:00
Kuba Brecka 7d1ebed0c5 [asan] fix false dynamic-stack-buffer-overflow report with constantly-sized dynamic allocas, compiler-rt part
See the bug report at https://github.com/google/sanitizers/issues/691. When a dynamic alloca has a constant size, ASan instrumentation will treat it as a regular dynamic alloca (insert calls to poison and unpoison), but the backend will turn it into a regular stack variable. The poisoning/unpoisoning is then broken. This patch will treat such allocas as static.

Differential Revision: http://reviews.llvm.org/D21509

llvm-svn: 273889
2016-06-27 15:57:53 +00:00
Ryan Govostes d4492ee159 Move -ldl to the correct compiler invocation
llvm-svn: 273844
2016-06-27 05:44:47 +00:00
Kuba Brecka 30ad0c941a [tsan] Intercept libcxx __release_shared to avoid false positive with weak_ptrs and destructors in C++
There is a "well-known" TSan false positive when using C++ weak_ptr/shared_ptr and code in destructors, e.g. described at <https://llvm.org/bugs/show_bug.cgi?id=22324>. The "standard" solution is to build and use a TSan-instrumented version of libcxx, which is not trivial for end-users. This patch tries a different approach (on OS X): It adds an interceptor for the specific function in libc++.dylib, which implements the atomic operation that needs to be visible to TSan.

Differential Revision: http://reviews.llvm.org/D21609

llvm-svn: 273806
2016-06-26 08:14:01 +00:00
Peter Collingbourne c79ad577fb cfi: Start testing CFI in both standalone and devirtualization modes.
Differential Revision: http://reviews.llvm.org/D21123

llvm-svn: 273758
2016-06-25 00:24:22 +00:00
Evgeniy Stepanov dd9e03ed87 [msan] Intercept eventfd_read, eventfd_write.
llvm-svn: 273748
2016-06-24 23:32:30 +00:00
Evgeniy Stepanov c8679985ed [sanitizer] Add syscall handlers for sigaction and rt_sigaction.
llvm-svn: 273746
2016-06-24 23:09:44 +00:00
Ryan Govostes 6f92bd38d8 [asan] Improve global-registration.c test
Removes use of GNU language extensions from the test, and hopefully fixes the
link order on Linux.

llvm-svn: 273741
2016-06-24 22:39:23 +00:00
Peter Collingbourne cf55f217ba cfi: Apply pass rename to tests.
Differential Revision: http://reviews.llvm.org/D21055

llvm-svn: 273731
2016-06-24 21:22:02 +00:00
Evgeniy Stepanov c7509de7cc [msan] Fix syscall handlers for pipe, pipe2, socketpair.
These syscalls write two file descriptors into the output buffer, not one.

llvm-svn: 273728
2016-06-24 21:15:53 +00:00
Xinliang David Li 3e9bbddcbb fix a test bug when executed remotedly
llvm-svn: 273693
2016-06-24 17:42:51 +00:00
Ryan Govostes 00f607eef0 Change shared library load path to appease Android bot
llvm-svn: 273654
2016-06-24 06:49:01 +00:00
Ryan Govostes 0ec8ab680f [asan] Add failure logging to global-registration.c test case
llvm-svn: 273629
2016-06-23 23:26:25 +00:00
Ryan Govostes 3c0f63c98b [asan] Fix global-registration.c on Linux
llvm-svn: 273476
2016-06-22 20:52:34 +00:00
Anna Zaks 0a494bd4d4 [asan] Relax a flaky invalid-pointer-pairs test
This test is flaky. Specifically, on some Mac configurations we see the
__sanitizer_ptr_cmp as the 0th frame. Let's relax it to not require that
f is in frame #0.

61396==ERROR: AddressSanitizer: invalid-pointer-pair: 0x01e00510 0x01e004d0
0 0x18f5a3 in __sanitizer_ptr_cmp ... libclang_rt.asan_osx_dynamic.dylib+0xaf5a3)
1 0xdd924 in f(char, char*, char*) ... invalid-pointer-pairs.cc:14:14

Differential Revision: http://reviews.llvm.org/D21588

llvm-svn: 273475
2016-06-22 20:52:21 +00:00
Ryan Govostes f66146914b [asan] Add a test case for global registration
This test case checks that globals from all object files are being registered
after they've been linked together. It also checks that globals from libraries
loaded at runtime are registered.

llvm-svn: 273464
2016-06-22 19:59:10 +00:00
Dmitry Vyukov 47b7c5c912 [asan] add primitives that allow coroutine implementations
This patch adds the __sanitizer_start_switch_fiber and
__sanitizer_finish_switch_fiber methods inspired from what can be found here
2ea64dd249 .

These methods are needed when the compiled software needs to implement
coroutines, fibers or the like. Without a way to annotate them, when the program
jumps to a stack that is not the thread stack, __asan_handle_no_return shows a
warning about that, and the fake stack mechanism may free fake frames that are
still in use.

Author: blastrock (Philippe Daouadi)
Reviewed in http://reviews.llvm.org/D20913

llvm-svn: 273260
2016-06-21 12:29:18 +00:00
Evgeniy Stepanov ecfcc07a48 [msan] Don't check dstaddr in sendto() interceptor.
Dstaddr may contain uninitialized padding at the end (common
implementations accept larger addrlen and ignore the extra bytes).
Also, depending on the socket state, dstaddr argument may be ignored.

llvm-svn: 273205
2016-06-20 22:05:33 +00:00
Evgeniy Stepanov 843b651398 [msan] Allow uninitialized padding in struct msghdr.
llvm-svn: 273204
2016-06-20 21:44:14 +00:00
Evgeniy Stepanov 352289b679 Hide send/sendto/sendmsg interptors under a flag.
A runtime flag to enable checking in send* interceptors.
Checking is enabled by default.

llvm-svn: 273174
2016-06-20 17:57:51 +00:00
Qin Zhao e24bc365e8 [esan|cfrag] Add the struct field size array in StructInfo
Summary:
Adds the struct field size array in the struct StructInfo.

Prints struct field size info in the report.

Reviewers: aizatsky

Subscribers: vitalybuka, zhaoqin, kcc, eugenis, bruening, llvm-commits, kubabrecka

Differential Revision: http://reviews.llvm.org/D21342

llvm-svn: 272988
2016-06-17 04:50:11 +00:00
Evgeniy Stepanov 3c17c73924 [msan] Intercept send/sendto/sendmsg.
send/sendmsg moved from tsan to sanitizer_common; sendto is new.

llvm-svn: 272980
2016-06-17 00:43:11 +00:00
Kostya Serebryany bf6a04fde8 [sanitizers] introduce yet another API function: __sanitizer_install_malloc_and_free_hooks
llvm-svn: 272943
2016-06-16 20:06:06 +00:00
Evgeniy Stepanov 062c26f1f0 Merge two coverage tests undef UBSan into one.
Also replace mkdir -p with rm -rf && mkdir.

llvm-svn: 272839
2016-06-15 21:18:17 +00:00
Evgeniy Stepanov 9ea0833b6e Fix ubsan/coverage test to put coverage file in a subdirectory.
By default coverage is dumped to the current directory, which may not
always be writable.

llvm-svn: 272732
2016-06-14 22:53:29 +00:00
Evgeniy Stepanov c565cfaac9 Compiler-rt test for sanitizer coverage w/o sanitizers.
llvm-svn: 272718
2016-06-14 21:33:59 +00:00
Derek Bruening f6f149da29 [sanitizer][esan] Add internal_sigaction_syscall
Summary:
Adds a version of sigaction that uses a raw system call, to avoid circular
dependencies and support calling sigaction prior to setting up
interceptors.  The new sigaction relies on an assembly sigreturn routine
for its restorer, which is Linux x86_64-only for now.

Uses the new sigaction to initialize the working set tool's shadow fault
handler prior to libc interceptor being set up.  This is required to
support instrumentation invoked during interceptor setup, which happens
with an instrumented tcmalloc or other allocator compiled with esan.

Adds a test that emulates an instrumented allocator.

Reviewers: aizatsky

Subscribers: vitalybuka, tberghammer, zhaoqin, danalbert, kcc, srhines, eugenis, llvm-commits, kubabrecka

Differential Revision: http://reviews.llvm.org/D21083

llvm-svn: 272676
2016-06-14 15:15:38 +00:00
Nico Weber be7aa544f0 Revert r272591, http://lab.llvm.org:8011/builders/clang-x64-ninja-win7 has been broken since this landed.
llvm-svn: 272659
2016-06-14 12:39:22 +00:00
Derek Bruening c4c649e25a [sanitizer][esan] Add internal_sigaction_syscall
Summary:
Adds a version of sigaction that uses a raw system call, to avoid circular
dependencies and support calling sigaction prior to setting up
interceptors.  The new sigaction relies on an assembly sigreturn routine
for its restorer, which is Linux x86_64-only for now.

Uses the new sigaction to initialize the working set tool's shadow fault
handler prior to libc interceptor being set up.  This is required to
support instrumentation invoked during interceptor setup, which happens
with an instrumented tcmalloc or other allocator compiled with esan.

Adds a test that emulates an instrumented allocator.

Reviewers: aizatsky

Subscribers: vitalybuka, tberghammer, zhaoqin, danalbert, kcc, srhines, eugenis, llvm-commits, kubabrecka

Differential Revision: http://reviews.llvm.org/D21083

llvm-svn: 272591
2016-06-13 21:50:00 +00:00
Derek Bruening db176c11dc Revert "[sanitizer][esan] Add internal_sigaction_syscall"
This reverts commit r272553.

The iOS build fails to link.

llvm-svn: 272557
2016-06-13 16:16:49 +00:00
Derek Bruening 19a4b8d8f8 [sanitizer][esan] Add internal_sigaction_syscall
Summary:
Adds a version of sigaction that uses a raw system call, to avoid circular
dependencies and support calling sigaction prior to setting up
interceptors.  The new sigaction relies on an assembly sigreturn routine
for its restorer, which is Linux x86_64-only for now.

Uses the new sigaction to initialize the working set tool's shadow fault
handler prior to libc interceptor being set up.  This is required to
support instrumentation invoked during interceptor setup, which happens
with an instrumented tcmalloc or other allocator compiled with esan.

Adds a test that emulates an instrumented allocator.

Reviewers: aizatsky

Subscribers: vitalybuka, tberghammer, zhaoqin, danalbert, kcc, srhines, eugenis, llvm-commits, kubabrecka

Differential Revision: http://reviews.llvm.org/D21083

llvm-svn: 272553
2016-06-13 15:42:39 +00:00
Sean Silva 537b146798 [libprofile] Define an expansion `%clang_profgen=`
llvm-svn: 272498
2016-06-12 04:17:57 +00:00
Xinliang David Li df5843a532 [profile] fix bot failure on darwin
Profile setting accross shared lib is broken on darwin (to be investigated).
Move the test to Linux only for now

llvm-svn: 272404
2016-06-10 16:23:32 +00:00
Xinliang David Li 1d58b8d95e [profile] add profile path tests for shared lib
Test that __llvm_profile_set_filename invoked in
main program is 'visible' to shared lib (overriding
shared libary's profile path set on command line)

llvm-svn: 272375
2016-06-10 06:14:17 +00:00
Xinliang David Li af053d8b97 [profile] add profile path tests
Testing profile path setter predendence.

llvm-svn: 272372
2016-06-10 05:19:38 +00:00
Qin Zhao a4a7220db1 [esan|cfrag] Add the struct field offset array in StructInfo
Summary:
Adds the struct field offset array in the struct StructInfo.

Prints struct size and field offset info in the report.

Reviewers: aizatsky

Subscribers: vitalybuka, zhaoqin, kcc, eugenis, bruening, llvm-commits, kubabrecka

Differential Revision: http://reviews.llvm.org/D21191

llvm-svn: 272363
2016-06-10 02:10:34 +00:00
Xinliang David Li 5846d08a2c Fix win bot failure
llvm-svn: 272316
2016-06-09 21:52:24 +00:00
Vedant Kumar 2494d18f84 [profile] Fix test to bail on failed waitpid in instrprof-file_ex.c
This resolves PR28066.

Patch by David Binderman!

llvm-svn: 272268
2016-06-09 15:29:59 +00:00
Xinliang David Li e2ce2e0020 [profile] in-process merging support part-3
Differential Revision: http://reviews.llvm.org/D21056

llvm-svn: 272227
2016-06-08 23:43:56 +00:00
Derek Bruening c45e51c891 [esan|wset] Reduce flakiness in samples test
Generalizes the workingset-samples test to pass when a sample has a
size of 0, which can happen on a loaded machine.

llvm-svn: 272175
2016-06-08 17:35:52 +00:00
Kostya Serebryany 86020ba32b [scudo] trying to fix the bot: aligned_alloc is not known there; attempt 3
llvm-svn: 272074
2016-06-07 23:49:11 +00:00
Kostya Serebryany 8aa0d7332a [scudo] trying to fix the bot: aligned_alloc is not known there; attempt 2
llvm-svn: 272051
2016-06-07 20:09:49 +00:00
Kostya Serebryany 86f8d33442 [scudo] trying to fix the bot: aligned_alloc is not known there
llvm-svn: 272037
2016-06-07 18:29:10 +00:00
Kostya Serebryany 422ea24d45 [asan] make print_memory_profile_test more reliable by using large allocation sizes. Hoping to fix the llvm-clang-lld-x86_64-debian-fast bot
llvm-svn: 272020
2016-06-07 16:08:59 +00:00
Kostya Serebryany 712fc9803a [sanitizer] Initial implementation of a Hardened Allocator
Summary:
This is an initial implementation of a Hardened Allocator based on Sanitizer Common's CombinedAllocator.
It aims at mitigating heap based vulnerabilities by adding several features to the base allocator, while staying relatively fast.
The following were implemented:
- additional consistency checks on the allocation function parameters and on the heap chunks;
- use of checksum protected chunk header, to detect corruption;
- randomness to the allocator base;
- delayed freelist (quarantine), to mitigate use after free and overall determinism.
Additional mitigations are in the works.

Reviewers: eugenis, aizatsky, pcc, krasin, vitalybuka, glider, dvyukov, kcc

Subscribers: kubabrecka, filcab, llvm-commits

Differential Revision: http://reviews.llvm.org/D20084

llvm-svn: 271968
2016-06-07 01:20:26 +00:00
David Blaikie 7d492c4ff8 add -f to rm so the test passes the first time it's run the file file is not present
(otherwise it just keeps failing at the rm step and never passes... )

llvm-svn: 271959
2016-06-06 23:31:58 +00:00
Sean Silva 7e4e69abe2 [libprofile] Also use `env` for this test.
(necessary on Windows)

llvm-svn: 271955
2016-06-06 23:19:23 +00:00
Sean Silva d7caf5889b [libprofile] Add %run to a couple tests.
llvm-svn: 271947
2016-06-06 22:19:49 +00:00
Xinliang David Li 0891b6d59b [profile] code cleanup /NFC
Address review feedback for better
readability.

llvm-svn: 271922
2016-06-06 18:31:29 +00:00
Kuba Brecka 2e26d9faac [asan] Reenable ASan tests in "check-all"
Somehow, in r271049, ASan lit tests and unit tests were removed from “check-all”. Doesn’t seem intentional, let’s fix it.

Differential Revision: http://reviews.llvm.org/D21017

llvm-svn: 271905
2016-06-06 16:24:47 +00:00
Xinliang David Li 5cd1f94d4f [profile] in-process mergeing support (part-2)
(Part-1 merging API is in profile runtime)

This patch implements a portable file opening API
with exclusive access for the process. In-process
profile merge requires profile file update to be
atomic/fully sychronized.

llvm-svn: 271864
2016-06-06 03:17:58 +00:00
Chandler Carruth 7573cfe2b3 It really helps to not randomly delete one of the closing brackets. =/
llvm-svn: 271787
2016-06-04 09:06:59 +00:00
Chandler Carruth b330dcab19 Ok, now I know why I kept getting confused and not making progress
fixing tis test. There are different configurations running, and they
have subtly different backtraces. I didn't notice that the configs
changed and so I kept occilating between the two.

Now I've looked at two different configs at the same time, and so this
should be much more likely to work.

llvm-svn: 271786
2016-06-04 08:54:57 +00:00
Chandler Carruth 9ef4243824 Fix the test for printing the memory profile. This fuctionality is only
available along side the leak checking, so use the REQUIRES for that.

Also, use %run as other tests do when launching the built binary.

This fixes check-asan for me on Linux and looks like it should fix the
linux sanitizer bots as well.

llvm-svn: 271785
2016-06-04 08:45:32 +00:00
Chandler Carruth ece6d7bf2e Update this test yet again, this time based on a nice consecutive pair
of lines provided with the filecheck output from the previous run. I'll
probably give up after this and get someone with a Windows build to help
me out.

llvm-svn: 271784
2016-06-04 08:24:56 +00:00
Chandler Carruth 4f785dc1f6 I didn't actually get this right, but now I have frame #0 and frame #2.
This should fail on frame #1 and show what that should actually be.

llvm-svn: 271783
2016-06-04 08:09:24 +00:00
Chandler Carruth d26defd57e Amazingly, my guess was correct for the top two frames here. Hopefully
with this, the Windows sanitizer bot will go green!

llvm-svn: 271782
2016-06-04 07:29:10 +00:00
Chandler Carruth 79abce39bb Temporary hack to this test to try and get the sanitizer-windows bot to
show enough information for me to fix the patterns used here.

llvm-svn: 271779
2016-06-04 06:16:49 +00:00
Xinliang David Li c012d086fa reapply r271577 after OSX bug is fixed (hopefully)
llvm-svn: 271759
2016-06-04 01:51:25 +00:00
Qin Zhao bc929e4765 [esan|cfrag] Compute the struct field access difference ratio
Summary:
Computes the struct field access variation based on each field access
count.

Adds a flag to control the report thresholds.

Updates struct-simple.cpp with variance report output.

Reviewers: aizatsky

Subscribers: kubabrecka, zhaoqin, llvm-commits, eugenis, vitalybuka, kcc, bruening

Differential Revision: http://reviews.llvm.org/D20914

llvm-svn: 271734
2016-06-03 20:48:17 +00:00
Derek Bruening 45afd7e8fc [esan] Eliminate flakiness in large-stack test
Turns off sampling for the large-stack test to remove nondeterminism in the
output and fix bot failures.

llvm-svn: 271691
2016-06-03 17:18:09 +00:00
Derek Bruening e78e4a6e94 [esan|wset] Add 8-level working set snapshot accumulation
Summary:
Adds a new option -snapshot_step controlling the frequency distribution for
an 8-level series of samples using each bit of each shadow byte.
Implements accumulation from each level to the next higher level at the
specified frequency.

Adds storage of the 8 series of samples using CircularBuffer instances.
Fixes an error in the circular buffer data structure where a static
object's destructor will be called too early.

Prints the results out at the end in a simple manner to give us something
to start with.

Updates the workingset-samples test to test the new feature.

Reviewers: aizatsky

Subscribers: vitalybuka, zhaoqin, kcc, eugenis, llvm-commits, kubabrecka

Differential Revision: http://reviews.llvm.org/D20833

llvm-svn: 271683
2016-06-03 16:27:50 +00:00
Derek Bruening 07814769a8 [esan] Add sideline itimer support
Summary:
Adds support for creating a separate thread for performing "sideline"
actions on a periodic basis via an itimer.  A new class SidelineThread
implements this feature, exposing a sampling callback to the caller.

Adds initial usage of sideline sampling to the working set tool.  For now
it simply prints the usage at each snapshot at verbosity level 1.  Adds a
test of this behavior.  Adds a new option -record_snapshots to control
whether we sample and a new option -sample_freq to control the periodicity
of the sampling.

Reviewers: aizatsky

Subscribers: vitalybuka, zhaoqin, kcc, eugenis, llvm-commits, kubabrecka

Differential Revision: http://reviews.llvm.org/D20751

llvm-svn: 271682
2016-06-03 16:14:07 +00:00
Dmitry Vyukov 0f7e949a42 tsan: rely on AnnotateRWLockCreateStatic to detect linker-initialized mutexes
The new annotation was added a while ago, but was not actually used.
Use the annotation to detect linker-initialized mutexes instead
of the broken IsGlobalVar which has both false positives and false
negatives. Remove IsGlobalVar mess.

llvm-svn: 271663
2016-06-03 11:48:27 +00:00
Mehdi Amini e1db5a0400 Revert "[profile] enable a subtest for vcall inline virtual func"
This reverts commit r271577.

The test does not pass on OSX.

llvm-svn: 271617
2016-06-03 00:45:26 +00:00
Derek Bruening 0b04950116 [esan] Add support for log_exe_name
Summary:
Adds the call needed to cache the binary name to support the sanitizer
option log_exe_name for usable log file results when running multiple
applications.  Adds a test.

Reviewers: aizatsky

Subscribers: vitalybuka, zhaoqin, kcc, eugenis, llvm-commits, kubabrecka

Differential Revision: http://reviews.llvm.org/D20747

llvm-svn: 271586
2016-06-02 20:50:30 +00:00
Xinliang David Li d4c23fc76f [profile] enable a subtest for vcall inline virtual func
llvm-svn: 271577
2016-06-02 20:12:06 +00:00
Dmitry Vyukov 1ae44e6a2b tsan: clean up dynamic TLS memory between reuse
Currently the added test produces false race reports with glibc 2.19,
because DLTS memory is reused by pthread under the hood.

Use the DTLS machinery to intercept new DTLS ranges.
__tls_get_addr known to cause issues for tsan in the past,
so write the interceptor more carefully.

Reviewed in http://reviews.llvm.org/D20927

llvm-svn: 271568
2016-06-02 19:18:22 +00:00
Qin Zhao 4175a6d580 [esan|cfrag] Add struct info registration
Summary:
Adds StructInfo to CacheFragInfo to match the LLVM's EfficiencySanitizer
structs.

Uses StructHashMap to keep track of the struct info used by the app.

Adds registerStructInfo/unregisterStructInfo to add/remove struct infos
to/from StructHashMap.

updates test struct-simple.cpp with more C structs.

Reviewers: aizatsky, filcab

Subscribers: filcab, zhaoqin, llvm-commits, eugenis, vitalybuka, kcc, bruening, kubabrecka

Differential Revision: http://reviews.llvm.org/D20590

llvm-svn: 271564
2016-06-02 18:45:25 +00:00
Ivan Krasin 048155c399 UBSan: crash less often on corrupted Vtables.
Summary:
This CL adds a weak check for a Vtable prefix: for a well-formed
Vtable, we require the prefix to be within [-1<<20; 1<<20].

Practically, this solves most of the known cases when UBSan segfaults
without providing any useful diagnostics.

Reviewers: pcc

Subscribers: kubabrecka

Differential Revision: http://reviews.llvm.org/D19750

llvm-svn: 271560
2016-06-02 18:36:12 +00:00
Xinliang David Li 66703ebfe5 [profile] Add end-end test of vp for inline virtual functions
Make sure inline virtual function's address is properly recorded and
dumped in raw profile so that value profiling does not loss tracking.
(Second part of the test will be enabled after the lowering bug is fixed
in LLVM)

llvm-svn: 271528
2016-06-02 16:24:21 +00:00
Kostya Serebryany 5a7159c416 [asan] add an interface function __sanitizer_print_memory_profile (a basic memory profiler; asan/Linux-only for now)
llvm-svn: 271463
2016-06-02 01:21:52 +00:00
Qin Zhao 9e39638375 [esan|cfrag] Add the skeleton to handle the cfrag argument
Summary:
Adds the struct declaration for the cache-fragmentation tool variable
passed to the runtime library.

Updates test struct-simple.cpp.

Reviewers: aizatsky, bruening

Subscribers: filcab, kubabrecka, bruening, kcc, vitalybuka, eugenis, llvm-commits, zhaoqin

Differential Revision: http://reviews.llvm.org/D20542

llvm-svn: 271337
2016-05-31 21:27:39 +00:00
Mehdi Amini 42b0c352c1 Fix test for Darwin: ASAN is calling abort by default on Darwin, which not detects as a crash
llvm-svn: 271323
2016-05-31 20:09:56 +00:00
Derek Bruening b7e38d8821 [esan] Add circular buffer data structure
Summary:
Adds a new class, CircularBuffer, for holding a wrap-around fixed-size
sequence of a primitive data type.  This will be used initially by the
working set tool.

Adds a unit test for CircularBuffer, including infrastructure support to
include esan headers and to link with the esan library by pretending to
want the working set tool.

Reviewers: aizatsky, filcab

Subscribers: vitalybuka, zhaoqin, kcc, eugenis, llvm-commits, kubabrecka

Differential Revision: http://reviews.llvm.org/D20579

llvm-svn: 271286
2016-05-31 14:44:49 +00:00
Derek Bruening 8ef3f0fa5b [esan|wset] Iterate all memory to compute the total working set
Summary:
Adds iteration of all application memory in an efficient manner using
shadow faults.  Shadow memory starts out inaccessible and we mark it
writable one page at a time on each fault when the instrumentation touches
it.  This allows iteration over just the mapped shadow memory, saving
significant time.

Adds a process-end iteration and pretty-printing of the final result.

Adds a new test and updates the existing tests.

Reviewers: aizatsky, filcab

Subscribers: vitalybuka, zhaoqin, kcc, eugenis, llvm-commits, kubabrecka

Differential Revision: http://reviews.llvm.org/D20578

llvm-svn: 271277
2016-05-31 13:41:07 +00:00
Derek Bruening 8e74c1084b [esan] Intercept and chain signal handlers
Summary:
In preparation for fault-based shadow memory iteration, we add support for
our own signal handler by adding app signal handler interception as well as
chaining for SIGSEGV.  This is done in a simple manner: we do not honor the
app's alternate stack nor any sigaction flags for SIGSEGV.

Adds a new test of transparency in app signal handling.

Reviewers: aizatsky

Subscribers: filcab, kubabrecka, vitalybuka, zhaoqin, kcc, eugenis, llvm-commits

Differential Revision: http://reviews.llvm.org/D20577

llvm-svn: 271272
2016-05-31 13:21:03 +00:00
Xinliang David Li 9ab45cf1eb Move test only for the relevant platform
llvm-svn: 271098
2016-05-28 04:26:06 +00:00
Kostya Serebryany e31e778160 [sanitizers] introduce a common run-time option dedup_token_length to help with report deduplication, off by default for now. See https://github.com/google/sanitizers/issues/684
llvm-svn: 271085
2016-05-28 01:25:44 +00:00
Derek Bruening 909d32955b [esan] Add handling of large stack size rlimits
Summary:
Adds detection of large stack size rlimits (over 1 TB or unlimited), which
results in an mmap location that our shadow mapping does not support.  We
re-exec the application in this situation.  Adds a test of this behavior.

Adds general detection of mmap regions outside of our app regions.  In the
future we want to try to adaptively handle these but for now we abort.

Moves the existing Linux-specific mmap code into a platform-specific file
where the new rlimit code lives.

Reviewers: eugenis

Subscribers: vitalybuka, zhaoqin, kcc, aizatsky, llvm-commits, kubabrecka

Differential Revision: http://reviews.llvm.org/D20745

llvm-svn: 271079
2016-05-28 00:25:16 +00:00
Etienne Bergeron 00f3f6e296 This patch is activating the build of Asan on Windows 64-bits.
It's fixing compilation errors. The runtime is not yet working.

Missing features:

OverrideFunction for x64
an equiv function for inline asm (atomic_compare_exchange_strong)
shadow memory offset needs to be adjusted
RoundUpToInstrBoundary for x64
They will be implemented by subsequent patches.

Patch by Wei Wang.

Differential revision: http://reviews.llvm.org/D20455

llvm-svn: 271049
2016-05-27 21:29:31 +00:00
Kostya Serebryany 1508f591b3 [sanitizers] introduce __sanitizer_set_report_fd so that we can re-route the sanitizer logging to another fd from inside the process
llvm-svn: 271046
2016-05-27 21:23:05 +00:00
Xinliang David Li c3fdce3f1d [profile] Add a test to ensure runtime allocator is not invoked
llvm-svn: 271017
2016-05-27 16:49:29 +00:00
Derek Bruening 850d47ce64 [esan] Fix workingset-memset test failure
Fixes an esan workingset-memset test failure by switching to malloc to
avoid a shadow mapping issue with mmap in certain situations that will be
fully fixed separately.

llvm-svn: 270949
2016-05-27 01:47:27 +00:00
Xinliang David Li 753279e054 Add missing test case changes
llvm-svn: 270930
2016-05-26 22:20:39 +00:00
Vitaly Buka 132639120a Init tsan with .preinit_array section
Summary: Some libraries, like OpenSSL, runs code from .init section.

Reviewers: kcc, eugenis

Subscribers: kubabrecka, llvm-commits

Differential Revision: http://reviews.llvm.org/D20646

llvm-svn: 270873
2016-05-26 17:05:36 +00:00
Hal Finkel 678635e010 Fix columns for member function calls
After r270775, Clang is smarter about the generating the locations for
member-function calls. Update some ubsan tests accordingly.

llvm-svn: 270801
2016-05-25 23:47:34 +00:00
Xinliang David Li 65971297a0 [profile] Add early checking to bypass node pointer update
llvm-svn: 270766
2016-05-25 21:27:02 +00:00
Qin Zhao 7e4933f430 [esan][cfrag] Add skeleton for cache fragmentation tool support
Summary:
Adds cache_frag.h and cache_frag.cpp for the cache fragmentation tool.

Updates test struct-simple.cpp.

Reviewers: aizatsky

Subscribers: filcab, zhaoqin, llvm-commits, eugenis, vitalybuka, kcc, bruening, kubabrecka

Differential Revision: http://reviews.llvm.org/D20538

llvm-svn: 270737
2016-05-25 17:49:00 +00:00
Kuba Brecka f5f140db28 [tsan] Change some OS X tests to include system headers (xpc.h, mman.h) more explicitly.
llvm-svn: 270713
2016-05-25 16:04:24 +00:00
Derek Bruening 88639859db Add working set base runtime library
Summary:
Adds the base runtime library for the working set tool.
Adds slowpath code for updating the shadow memory.

To be added in the future:
+ Scan memory and report the total size.
+ Take samples for intermediate values.

Reviewers: aizatsky

Subscribers: kubabrecka, vitalybuka, zhaoqin, kcc, eugenis, llvm-commits

Differential Revision: http://reviews.llvm.org/D20485

llvm-svn: 270650
2016-05-25 02:04:04 +00:00
Derek Bruening 515c15c207 [esan|cfrag] Add test struct-simple.cpp
Summary: Adds a new test struct-simple.cpp for testing the
cache-fragmentation tool with a multi-compilation-unit application.

Patch by Qin Zhao.

Reviewers: bruening

Subscribers: kubabrecka, kcc, vitalybuka, eugenis, aizatsky, llvm-commits, zhaoqin

Differential Revision: http://reviews.llvm.org/D20599

llvm-svn: 270631
2016-05-24 23:03:52 +00:00
Xinliang David Li 7b41393497 [profile] initialize static pool properly
Remove dependency on runtime initializer to avoid
issues related to initialization order.

llvm-svn: 270371
2016-05-22 16:36:03 +00:00
Xinliang David Li 4e8754d2cb [profile] Static counter allocation for value profiling (part-2)
Differential Revision: http://reviews.llvm.org/D20460

llvm-svn: 270337
2016-05-21 22:55:45 +00:00
Kuba Brecka 0287e17d09 [tsan] Don't abort when a deadlock detector finds a mutex cycle longer than 10
In one of the already existing apps that I'm testing TSan on, I really see a mutex path that is longer than 10 (but not by much, something like 11-13 actually). Let's raise this to 20 and weaken the assertion so we don't crash.

Differential Revision: http://reviews.llvm.org/D20427

llvm-svn: 270319
2016-05-21 08:31:13 +00:00
Derek Bruening c7f4922524 [esan] Extend shadow mapping to cover low libraries
Summary:
Adds support for app libraries starting slightly below 0x7f00'00000000 (the
mmap ASLR range extends down to 0x7efb'f8000000 for reasonable stack
limits) by switching to a shadow mapping offset of 0x1300'00000000.

Reviewers: aizatsky

Subscribers: vitalybuka, zhaoqin, kcc, eugenis, llvm-commits, kubabrecka

Differential Revision: http://reviews.llvm.org/D20479

llvm-svn: 270255
2016-05-20 19:19:06 +00:00
Bill Seurer a143aed23c [powerpc] mark static_tls.cc test as UNSUPPORTED on powerpc64
An upcoming change for ld in binutils 2.26 causes this test to
always fail.

llvm-svn: 270223
2016-05-20 14:54:37 +00:00
Xinliang David Li 690c31f104 [profile] PROF_ERR, PROF_WARN
1) Move common prefix to the macro def
 2) Introduced PROF_WARN
 3) Make error message unconditionally printed out.

llvm-svn: 270185
2016-05-20 05:15:42 +00:00
Xinliang David Li 5f153e686e [profile] entry eviction support in value profiler
Differential revision: http://reviews.llvm.org/D20408

llvm-svn: 270141
2016-05-19 21:35:34 +00:00
Kuba Brecka ed29c21d5d [tsan] Add support for GCD's dispatch_after and dispatch_after_f
We're missing interceptors for dispatch_after and dispatch_after_f. Let's add them to avoid false positives. Added a test case.

Differential Revision: http://reviews.llvm.org/D20426

llvm-svn: 270071
2016-05-19 15:31:42 +00:00
Anna Zaks 7d47c990e6 [tsan] Ensure mmap respects ignore_interceptors_accesses
The ignore_interceptors_accesses setting did not have an effect on mmap, so
let's change that. It helps in cases user code is accessing the memory
written to by mmap when the synchronization is ensured by the code that
does not get rebuilt.

(This effects Swift interoperability since it's runtime is mapping memory
which gets accessed by the code emitted into the Swift application by the
compiler.)

Differential Revision: http://reviews.llvm.org/D20294

llvm-svn: 269855
2016-05-17 22:24:55 +00:00
Maxim Ostapenko 02c21b3ef9 [asan] Don't raise false alarm to recv/recvfrom when MSG_TRUNC is present.
Fix https://llvm.org/bugs/show_bug.cgi?id=27673.

Currenty ASan checks the return value of real recv/recvfrom to see if the written bytes fit in the buffer. That works fine most of time.
However, there is an exception: (from the RECV(2) man page)

MSG_TRUNC (since Linux 2.2)
    ... return the real length of the packet or datagram, even when it was longer than the passed buffer. ...

Some programs combine MSG_TRUNC, MSG_PEEK and a single-byte buffer to peek the incoming data size without reading (much of) them. In this case,
the return value is usually longer than what's been written and ASan raises a false alarm here. To avoid such false positive reports,
we can use min(res, len) in COMMON_INTERCEPTOR_WRITE_RANGE checks.

Differential Revision: http://reviews.llvm.org/D20280

llvm-svn: 269749
2016-05-17 07:38:27 +00:00
Daniel Sanders 962b2cda9c [mips][ias] Two XFAIL's now pass on 32-bit MIPS.
llvm-svn: 269571
2016-05-14 16:18:16 +00:00
Xinliang David Li 609fae3893 [profile] Eliminate dynamic memory allocation for buffered writer
With this change, dynamic memory allocation is only used
for testing purpose. This change is one of the many steps to
make instrument profiler dynamic allocation free.

llvm-svn: 269453
2016-05-13 18:26:26 +00:00
Kuba Brecka 7a947b6c6d Update test expectations after r269291 (Fix a crash when demangling Swift symbols).
llvm-svn: 269311
2016-05-12 17:08:25 +00:00
Marcin Koscielnicki 1598698fcd [ASan] [SystemZ] Add -mbackchain to test cflags.
This is needed for proper operation of the fast unwinder, see the discussion
on D18895.

Differential Revision: http://reviews.llvm.org/D19898

llvm-svn: 269277
2016-05-12 08:49:34 +00:00
Rong Xu 5da4dab0fc Reapply r268608
Re-enable the tests after IR instrumentation fix (r269146).
Check-in on behalf of davidxl.

llvm-svn: 269219
2016-05-11 18:37:08 +00:00
Derek Bruening 1658c089fd [esan] EfficiencySanitizer shadow memory
Summary:
Adds shadow memory mapping support common to all tools to the new
Efficiencysanitizer ("esan") family of tools.  This includes:

+ Shadow memory layout and mapping support for 64-bit Linux for any
  power-of-2 scale-down (1x, 2x, 4x, 8x, 16x, etc.) that ensures that
  shadow(shadow(address)) does not overlap shadow or application
  memory.

+ Mmap interception to ensure the application does not map on top of
  our shadow memory.

+ Init-time sanity checks for shadow regions.

+ A test of the mmap conflict mechanism.

Reviewers: aizatsky, filcab

Subscribers: filcab, kubabrecka, llvm-commits, vitalybuka, eugenis, kcc, zhaoqin

Differential Revision: http://reviews.llvm.org/D19921

llvm-svn: 269198
2016-05-11 15:47:54 +00:00
Xinliang David Li 32d8dc8261 Revert r268130 -- more bot failure
llvm-svn: 269142
2016-05-10 23:52:02 +00:00
Xinliang David Li b788391260 Reapply r268608 after IR instr bug fix
llvm-svn: 269130
2016-05-10 22:01:20 +00:00
Dmitry Vyukov 2498629e34 tsan: fix another crash due to processors
Another stack where we try to free sync objects,
but don't have a processors is:

  //   ResetRange
  //   __interceptor_munmap
  //   __deallocate_stack
  //   start_thread
  //   clone

Again, it is a latent bug that lead to memory leaks.
Also, increase amount of memory we scan in MetaMap::ResetRange.
Without that the test does not fail, as we fail to free
the sync objects on stack.

llvm-svn: 269041
2016-05-10 11:19:50 +00:00
Xinliang David Li bde99c3b0f Remove XFAIL
llvm-svn: 268978
2016-05-09 21:47:29 +00:00
Xinliang David Li e5e4713a56 Re install test reverted by r268866
llvm-svn: 268964
2016-05-09 19:51:50 +00:00
Renato Golin 553429898e [InstrProf] Delete unstable test on ARM. See PR27667
llvm-svn: 268866
2016-05-07 20:17:33 +00:00
Dmitry Vyukov 144eafd9ee tsan: fix a crash
Fixes crash reported in:
https://bugs.chromium.org/p/v8/issues/detail?id=4995

The problem is that we don't have a processor in a free interceptor
during thread exit.

The crash was introduced by introduction of Processors.
However, previously we silently leaked memory which wasn't any better.

llvm-svn: 268782
2016-05-06 19:35:22 +00:00
Xinliang David Li bedb81e09f Revert r268608 -- unexplained darwin bot failure
llvm-svn: 268779
2016-05-06 19:26:56 +00:00
Renato Golin 039f2ac354 [InstProf] Temporarily removing a test that fails/passes on different configurations (PR27667)
llvm-svn: 268748
2016-05-06 16:44:56 +00:00
Renato Golin 00966ed8b9 XFAILing a test on ARM. See PR27667
llvm-svn: 268745
2016-05-06 15:34:54 +00:00
Maxim Ostapenko 6dccd5bc1f [asan] Bail out on stack overflow in recovery mode.
In recovery mode, when ASan detects stack overflow (say, when infinite recursion detected),
it tries to continue program execution and hangs on repetitive error reports. There isn't any
sense to do it, we can just bail out on stack overflow error, because the program would crash soon anyway.

Differential Revision: http://reviews.llvm.org/D19958

llvm-svn: 268713
2016-05-06 07:09:22 +00:00
Xinliang David Li 2516bcd01c Add a test of VP with shared lib
llvm-svn: 268612
2016-05-05 06:28:12 +00:00
Xinliang David Li 0c09036232 IR value profile testing cleanup
llvm-svn: 268608
2016-05-05 05:41:02 +00:00
Vitaly Buka 8742943cb0 Relax stack check as on some platforms demanglers fail
Summary:
  On Windows (already fixed) and FreeBSD we have stacks traces without
  operator().

Reviewers: eugenis

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D19427

llvm-svn: 268332
2016-05-02 23:34:40 +00:00
Vitaly Buka 9102fc20f8 Add another failing use-after-scope test
Summary:
  Use after scope is not detected if array larger then 8 bytes.

Subscribers: kubabrecka

Differential Revision: http://reviews.llvm.org/D19572

llvm-svn: 268330
2016-05-02 23:12:04 +00:00
Kuba Brecka a90528bb89 [sanitizer] Fix a crash in SizeClassAllocator32 with an out-of-range pointer
This happens on a 64-bit platform that uses SizeClassAllocator32 (e.g. ASan on AArch64). When querying a large invalid pointer, `__sanitizer_get_allocated_size(0xdeadbeefdeadbeef)`, an assertion will fail.  This patch changes PointerIsMine to return false if the pointer is outside of [kSpaceBeg, kSpaceBeg + kSpaceSize).

Differential Revision: http://reviews.llvm.org/D15008

llvm-svn: 268243
2016-05-02 15:23:01 +00:00
Marcin Koscielnicki ee587cba0e [ASan] Add shadow offset for SystemZ.
This is the compiler-rt counterpart to D19650.

Differential Revision: http://reviews.llvm.org/D19652

llvm-svn: 268162
2016-04-30 10:02:12 +00:00
Filipe Cabecinhas 30cba35a84 Finally fix invalid-pointer-pairs.cc. This time the demangle on the Windows buildbot.
llvm-svn: 268160
2016-04-30 08:34:40 +00:00
Kuba Brecka 9ccde5ace4 [tsan] Return 0 from malloc_size for non-malloc'd pointers
In http://reviews.llvm.org/D19100, I introduced a bug: On OS X, existing programs rely on malloc_size() to detect whether a pointer comes from heap memory (malloc_size returns non-zero) or not. We have to distinguish between a zero-sized allocation (where we need to return 1 from malloc_size, due to other binary compatibility reasons, see http://reviews.llvm.org/D19100), and pointers that are not returned from malloc at all.

Differential Revision: http://reviews.llvm.org/D19653

llvm-svn: 268157
2016-04-30 07:14:41 +00:00
Filipe Cabecinhas 486c5d6ae9 Fix test's memory leaks.
llvm-svn: 268138
2016-04-29 23:42:34 +00:00
Filipe Cabecinhas dd754ef857 Try to fix clang-cmake-aarch64-42vma by removing a memory leak (have a global var capture it).
llvm-svn: 268114
2016-04-29 21:33:12 +00:00
Filipe Cabecinhas 04d61050ea [asan] Assert in __sanitizer_ptr_{sub,cmp} if one of the pointers was freed.
Summary:
This (partially) implements the check mentioned at
http://kristerw.blogspot.co.uk/2016/04/dangling-pointers-and-undefined-behavior.html
(via John Regehr)

Quoting:
"That the behavior is undefined follows from C11 6.2.4 "Storage
durations of objects"
  The lifetime of an object is the portion of program execution during
  which storage is guaranteed to be reserved for it. An object exists, has
  a constant address, and retains its last-stored value throughout its
  lifetime. If an object is referred to outside of its lifetime, the
  behavior is undefined. The value of a pointer becomes indeterminate when
  the object it points to (or just past) reaches the end of its lifetime.
and 7.22.3 "Memory management functions" that says that free ends the
lifetime of objects
  The lifetime of an allocated object extends from the allocation until
  the deallocation.
"

We can probably implement this for stack variables too, but I think this
is a good start to see if there's interest in this check.
We can also hide this behind a flag, too.

Reviewers: samsonov, kcc, rsmith, regehr

Subscribers: kubabrecka, llvm-commits

Differential Revision: http://reviews.llvm.org/D19691

llvm-svn: 268097
2016-04-29 20:37:34 +00:00
Marcin Koscielnicki a0193ecfe1 [ASan] [SystemZ] Mark segv_read_write.c as UNSUPPORTED.
On s390*-linux, sigcontext just doesn't contain any information that could
be used to recover the type of access, so there's no way to fix this, short
of emulating the faulting instruction.

Differential Revision: http://reviews.llvm.org/D19655

llvm-svn: 267960
2016-04-29 00:43:20 +00:00
Vedant Kumar 6a2ec9fc57 [test/asan] Update a test case to work with old Darwin SDK's
On Darwin, MAP_ANONYMOUS is a synonym for MAP_ANON. However, some SDK's
don't define MAP_ANONYMOUS. Use MAP_ANON to work around this.

(As a point of interest, the situation is exactly reversed on Linux.)

llvm-svn: 267907
2016-04-28 17:48:35 +00:00
Peter Collingbourne f730de619f Update visibility flags for CFI tests.
Differential Revision: http://reviews.llvm.org/D18813

llvm-svn: 267902
2016-04-28 17:09:09 +00:00
Mike Aizatsky ccd318dc7e [sanitizers] read/write page fault detection on mac.
Summary: Resubmit of http://reviews.llvm.org/D19495 enabled only on intel.

Subscribers: kubabrecka

Differential Revision: http://reviews.llvm.org/D19561

llvm-svn: 267750
2016-04-27 18:02:21 +00:00
Reid Kleckner a16ef7633b Un-XFAIL tests on Windows after fixing PR27492
Private symbols in PDBs do not have parameter types in their names so we
have to drop the parens from the lambda call operator.

llvm-svn: 267735
2016-04-27 16:38:03 +00:00
Mike Aizatsky a3060c1159 [sanitizers] rewriting test assuming assert() changes coverage.
Summary:
On windows platform assert() call creates two distinct CFG edges
which are coverage-instrumented. Simply calling assert would
change coverage numbers on the platform.

Subscribers: kubabrecka

Differential Revision: http://reviews.llvm.org/D19514

llvm-svn: 267610
2016-04-26 21:56:14 +00:00
Marcin Koscielnicki 7ecdeb7ac3 [sanitizer] [SystemZ] Add ptrace support bits.
Differential Revision: http://reviews.llvm.org/D19134

llvm-svn: 267548
2016-04-26 10:41:30 +00:00
Mehdi Amini 9163f4997a Revert "[sanitizers] read/write page fault detection on mac."
This reverts commit r267477.
It broke our bots that enables the AArch64 backends, it seems that
this code is using a Darwin *X86 specific* field.

From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 267526
2016-04-26 07:03:11 +00:00
Marcin Koscielnicki 9135ff9247 [MSan] Use COMMON_INTERCEPTOR_ENTER in libdl interceptors.
This fixes fails in test/msan/dlerror.cc - when real dlerror calls strcmp,
our strcmp interceptor now skips poison checking, since it's called in
interceptor context.  Strictly speaking, only the dlerror change is
necessary to fix the fail, but let's also change the other two just in case.

Differential Revision: http://reviews.llvm.org/D19499

llvm-svn: 267486
2016-04-25 22:25:49 +00:00
Mike Aizatsky f2bee298a0 [sanitizers] read/write page fault detection on mac.
Subscribers: kubabrecka

Differential Revision: http://reviews.llvm.org/D19495

llvm-svn: 267477
2016-04-25 21:44:43 +00:00