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Message-ID: <ZumFmDWlHcWOExgh@voyager>
Date: Tue, 17 Sep 2024 15:35:20 +0200
From: Markus Wichmann <nullplan@....net>
To: musl@...ts.openwall.com
Subject: Re: SIGSEGV/stack overflow in pthread_create - race condition?
Am Tue, Sep 17, 2024 at 08:12:41AM -0400 schrieb Rich Felker:
> Yes, getting minimal annotation needed for the debugger to handle this
> right is an open todo item. Ideally it would be contingent on whether
> you enabled debugging so that it wouldn't end up in no-debug-info
> builds. Slimming down the asm source files to the minimum that
> actually have to be asm source files (like clone, I think), which is
> also a wishlist item, would make it less of an invasive change, which
> is probably why I've held off on digging into it.
>
> Rich
Would it not be enough to clear fp in the clone child? That should
initialize the frame pointer chain, right? OK, it is an actual
instruction more for everyone, but I doubt the impact would even be
measurable.
Ciao,
Markus
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