Commit Graph

18 Commits

Author SHA1 Message Date
Dmitry Vyukov baf2f35ec4 sanitizers: Introduce ThreadType enum
Replace bool workerthread flag with ThreadType enum.
This change is preparation for fiber support.

[dvyukov: fixed build of sanitizer_thread_registry_test.cc]

Author: yuri (Yuri Per)
Reviewed in: https://reviews.llvm.org/D57839
Context: https://reviews.llvm.org/D54889

llvm-svn: 353390
2019-02-07 11:01:22 +00:00
Chandler Carruth 2946cd7010 Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

llvm-svn: 351636
2019-01-19 08:50:56 +00:00
Vitaly Buka ed43f18b55 [lsan] Report unsuspended threads
Summary:
Leak checker needs to suspend all process threads. If we have some running
thread in registry but not suspended we can have false leak report. So we will
report this case here for future debugging.

Reviewers: eugenis

Subscribers: kubamracek, llvm-commits

Differential Revision: https://reviews.llvm.org/D46663

llvm-svn: 331936
2018-05-09 23:02:14 +00:00
Francis Ricci 42175cb0d7 Add lsan interceptors for libdispatch functions on darwin
Summary:
This is required for standalone LSan to work with libdispatch worker threads,
and is a slimmed down version of the functionality provided for ASan
in asan_mac.cc.

Re-commit of r305695 with use_stacks=0 to get around a racy lingering pointer.

Reviewers: alekseyshl, kubamracek, glider, kcc

Subscribers: mgorny, llvm-commits

Differential Revision: https://reviews.llvm.org/D34247

llvm-svn: 305732
2017-06-19 19:21:31 +00:00
Francis Ricci 214b354f2e Revert "Add lsan interceptors for libdispatch functions on darwin"
This reverts r305695

llvm-svn: 305712
2017-06-19 17:08:55 +00:00
Francis Ricci 4f1e047a6d Add lsan interceptors for libdispatch functions on darwin
Summary:
This is required for standalone LSan to work with libdispatch worker threads,
and is a slimmed down version of the functionality provided for ASan
in asan_mac.cc.

Reviewers: alekseyshl, kubamracek, glider, kcc

Subscribers: mgorny, llvm-commits

Differential Revision: https://reviews.llvm.org/D34247

llvm-svn: 305695
2017-06-19 14:09:10 +00:00
Kuba Mracek ceb30b0717 [sanitizer] Introduce tid_t as a typedef for OS-provided thread IDs
We seem to assume that OS-provided thread IDs are either uptr or int, neither of which is true on Darwin. This introduces a tid_t type, which holds a OS-provided thread ID (gettid on Linux, pthread_threadid_np on Darwin, pthread_self on FreeBSD).

Differential Revision: https://reviews.llvm.org/D31774

llvm-svn: 300473
2017-04-17 18:17:38 +00:00
Francis Ricci 84f17f32ad Don't delete lsan thread-local data until it's no longer required
Summary:
The routines for thread destruction in the thread registry require
the lsan thread index, which is stored in pthread tls on OS X.
This means that we need to make sure that the lsan tls isn't destroyed
until after the thread registry tls. This change ensures that we
don't delete the lsan tls until we've finished destroying the thread
in the registry, ensuring that the destructor for the lsan tls runs
after the destructor for the thread registry tls.

This patch also adds a check to ensure that the thread ID is valid before
returning it in GetThreadID(), to ensure that the above behavior
is working correctly.

Reviewers: dvyukov, kubamracek, kcc

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D31884

llvm-svn: 299978
2017-04-11 19:57:12 +00:00
Francis Ricci a0921f68ab Fix build breakage from moving kInvalidTid to lsan_common
llvm-svn: 295409
2017-02-17 03:34:56 +00:00
Francis Ricci 571c05a550 Use pthreads to store current thread id on darwin
Summary:
__thread is not supported by all darwin versions and architectures,
use pthreads instead to allow for building darwin lsan on iossim.

Reviewers: kubamracek, kcc

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D29993

llvm-svn: 295405
2017-02-17 03:23:07 +00:00
Kuba Mracek bba1d40589 [tsan] Properly describe GCD worker threads in reports
When dealing with GCD worker threads, TSan currently prints weird things like "created by thread T-1" and "[failed to restore the stack]" in reports. This patch avoids that and instead prints "Thread T3 (...) is a GCD worker thread".

Differential Revision: https://reviews.llvm.org/D29103

llvm-svn: 293882
2017-02-02 12:54:21 +00:00
Etienne Bergeron e7863a86ad [compiler-rt][lsan] Fix compiler error due to attribute (windows)
Summary:
Window compiler is stricter for attributes location. This patch fixes a compilation error.
```
D:\src\llvm\llvm\projects\compiler-rt\lib\lsan\lsan_thread.cc(39): error C2144: syntax error: 'int' should be preceded by ';'
```

Reviewers: rnk, majnemer

Subscribers: majnemer, llvm-commits, chrisha, dberris

Differential Revision: https://reviews.llvm.org/D24810

llvm-svn: 282254
2016-09-23 15:11:41 +00:00
Alexey Samsonov 5535c51606 [LSan] Use __tls_get_addr interceptor to keep track of dynamic TLS.
Summary:
We have a way to keep track of allocated DTLS segments: let's use it
in LSan. Although this code is fragile and relies on glibc
implementation details, in some cases it proves to be better than
existing way of tracking DTLS in LSan: marking as "reachable" all
memory chunks allocated directly by "ld".

The plan is to eventually get rid of the latter, once we are sure
it's safe to remove.

Reviewers: kcc

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D16164

llvm-svn: 257785
2016-01-14 18:50:09 +00:00
Vedant Kumar 59ba7b8cd1 [compiler-rt] Apply modernize-use-nullptr fixes in sanitizers
- Trim spaces.
- Use nullptr in place of 0 for pointer variables.
- Use '!p' in place of 'p == 0' for null pointer checks.
- Add blank lines to separate function definitions.
- Add 'extern "C"' or 'namespace foo' comments after the appropriate
  closing brackets

This is a continuation of work from 409b7b82. The focus here is on the
various sanitizers (not sanitizer_common, as before).

Patch by Eugene Zelenko!

Differential Revision: http://reviews.llvm.org/D13225

llvm-svn: 248966
2015-10-01 00:22:21 +00:00
Sergey Matveev 43d90cbd86 [lsan] Support ASan's stack-use-after-return mode in LSan.
Treat the fake stack as live memory.

llvm-svn: 192593
2013-10-14 14:04:50 +00:00
Sergey Matveev bdeff959a1 [lsan] Handle fork() correctly.
Update the main thread's os_id on every pthread_create, and before
initiating leak checking. This ensures that we have the correct os_id even if we
have forked after Init().

llvm-svn: 185815
2013-07-08 12:57:24 +00:00
Sergey Matveev 9cda3df8bd [sanitizer] Move FindThreadByOSIdLocked from lsan to sanitizer_common.
llvm-svn: 182728
2013-05-27 10:35:51 +00:00
Sergey Matveev c7d003ec43 [lsan] Thread registry for standalone LSan.
llvm-svn: 182246
2013-05-20 10:57:53 +00:00