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Re: [RFC PATCH 00/34] The rest of the x86_64-gnu port
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From: |
Samuel Thibault |
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Subject: |
Re: [RFC PATCH 00/34] The rest of the x86_64-gnu port |
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Date: |
Mon, 10 Apr 2023 21:20:38 +0200 |
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User-agent: |
NeoMutt/20170609 (1.8.3) |
Hello,
Sergey Bugaev, le dim. 19 mars 2023 18:09:43 +0300, a ecrit:
> As for sigreturn specifically: I'm concerned about the possibility that
> putting the register dump onto the user's stack (or at %rsp - 128, on x86_64)
> may clobber the data trampoline.c puts there (unless an altstack is used),
> including the very sigcontext.
I guess we could make sure that the offset of ctx in stackframe is not
hit by data written by sigreturn.c.
Samuel