5 Commits

Author	SHA1	Message	Date
Maxim Ostapenko	fe863a6510	[lsan] Avoid segfaults during threads destruction under high load ... This patch addresses two issues: * It turned out that suspended thread may have dtls->dtv_size == kDestroyedThread (-1) and LSan wrongly assumes that DTV is available. This leads to SEGV when LSan tries to iterate through DTV that is invalid. * In some rare cases GetRegistersAndSP can fail with errno 3 (ESRCH). In this case LSan assumes that the whole stack of a given thread is available. This is wrong because ESRCH can indicate that suspended thread was destroyed and its stack was unmapped. This patch properly handles ESRCH from GetRegistersAndSP in order to avoid invalid accesses to already unpapped threads stack. Differential Revision: https://reviews.llvm.org/D30818 llvm-svn: 299630	2017-04-06 07:42:27 +00:00
Evgeniy Stepanov	7f6290ca9a	[sanitizer] Recognize static TLS in __tls_get_addr interceptor. ... Current code tries to find the dynamic TLS header to the left of the TLS block without checking that it's not a static TLS allocation. llvm-svn: 237495	2015-05-16 00:34:15 +00:00
Evgeniy Stepanov	7ad0bde843	[msan] Fix false positive on dynamic tls. ... Use existing DTLS code in sanitizer_tls_get_addr.{h,cc} to unpoison DTLS blocks both on allocation and deallocation. https://code.google.com/p/memory-sanitizer/issues/detail?id=44 llvm-svn: 211683	2014-06-25 11:30:35 +00:00
Alp Toker	1ee7fc7a1a	Fix typos ... llvm-svn: 208841	2014-05-15 02:22:34 +00:00
Kostya Serebryany	71788fac2a	[asan] experimental intercetor for __tls_get_addr. So far it does nothing interesting, actual usage will come later. See https://groups.google.com/forum/#!topic/address-sanitizer/BfwYD8HMxTM for background ... llvm-svn: 200384	2014-01-29 09:29:16 +00:00