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[Bug libc/16291] feature request: provide simpler ways to compute stack and tls boundaries
- From: "konstantin.s.serebryany at gmail dot com" <sourceware-bugzilla at sourceware dot org>
- To: glibc-bugs at sourceware dot org
- Date: Fri, 24 Jan 2014 08:46:20 +0000
- Subject: [Bug libc/16291] feature request: provide simpler ways to compute stack and tls boundaries
- Auto-submitted: auto-generated
- References: <bug-16291-131 at http dot sourceware dot org/bugzilla/>
https://sourceware.org/bugzilla/show_bug.cgi?id=16291
--- Comment #16 from Kostya Serebryany <konstantin.s.serebryany at gmail dot com> ---
FTR: the new TLS implementation (with __signal_safe_memalign instead of
__libc_memalign) also causes a false positive with MemorySanitizer:
1. Create a thread with dynamic tls, put garbage there
2. join the thread
3. Create a new thread, it will likely get the same dtls address. The shadow of
dtls is still poisoned and so we report a false positive.
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