Date: Fri, 07 Dec 2018 21:06:18 +0100 From: Florian Weimer <fweimer@...hat.com> To: Rich Felker <dalias@...c.org> Cc: musl@...ts.openwall.com Subject: Re: aio_cancel segmentation fault for in progress write requests * Rich Felker: > I don't think so. I'm concerned that it's a stack overflow, and that > somehow the kernel folks have managed to break the MINSIGSTKSZ ABI. Probably: <https://sourceware.org/bugzilla/show_bug.cgi?id=20305> <https://sourceware.org/bugzilla/show_bug.cgi?id=22636> It's a nasty CPU backwards compatibility problem. Some of the suggestions I made to work around this are simply wrong; don't take them too seriously. Nowadays, the kernel has a way to disable the %zmm registers, but it unfortunately does not reduce the save area size. Thanks, Florian
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