llvm-project

History

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
..
cmake	[compiler-rt] Fix multi-configuration output paths	2016-05-16 14:58:07 +00:00
include	[libFuzzer] extend the weak memcmp/strcmp/strncmp interceptors to receive the result of the computations. With that, don't do any mutations if memcmp/etc returned 0	2016-01-12 00:43:42 +00:00
lib	[asan] Don't raise false alarm to recv/recvfrom when MSG_TRUNC is present.	2016-05-17 07:38:27 +00:00
make	[PGO] Add API for profile merge from buffer	2016-03-03 18:54:46 +00:00
test	[asan] Don't raise false alarm to recv/recvfrom when MSG_TRUNC is present.	2016-05-17 07:38:27 +00:00
unittests	Replace hardcoded comment at 'lit.site.cfg.in'	2016-04-16 07:03:45 +00:00
www	Update references to new lists.llvm.org mailing lists.	2015-08-05 03:58:00 +00:00
.arcconfig	Update arc config to new domain.	2014-04-07 10:22:41 +00:00
.gitignore	Add vim swap files to .gitignore	2014-03-20 19:44:33 +00:00
CMakeLists.txt	[CMake] Support platform building builtins without a full toolchain	2016-05-09 21:45:52 +00:00
CODE_OWNERS.TXT	Add myself as a c-rt owner of ASan/Win	2014-02-27 12:07:43 +00:00
CREDITS.TXT	Add Guan-Hong Liu.	2014-06-16 08:38:19 +00:00
LICENSE.TXT	Update copyright year to 2016.	2016-03-30 22:38:50 +00:00
Makefile	…
README.txt	Moved the builtins documentation to lib/builtins/	2014-05-28 23:09:45 +00:00

README.txt

Compiler-RT
================================

This directory and its subdirectories contain source code for the compiler
support routines.

Compiler-RT is open source software. You may freely distribute it under the
terms of the license agreement found in LICENSE.txt.

================================