Date: Fri, 14 Nov 2014 22:18:43 -0500 From: Rich Felker <dalias@...c.org> To: musl@...ts.openwall.com Subject: Possible bug: MINSIGSTKSZ values Currently musl has MINSIGSTKSZ hard-coded as 2048. This is insufficient to store the ucontext_t for many archs. I'd like to keep it small on archs where that's possible, but the current value might not even work for modern x86 with large AVX state, etc. that needs to be saved. I don't have a proposed fix yet, but I think we should survey the values that are needed for different archs and either make it vary per-arch, or if they're all comparable, just increase the value to something that works for all archs. Note that the min pthread stack size is also well below the size of ucontext_t for many archs, but I don't think this is a problem. If you make a thread with a stack smaller than MINSIGSTKSZ+epsilon, you just need to start it with all signals blocked and leave them blocked (or avoid using signal handlers at all). Rich
Powered by blists - more mailing lists
Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.