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From: Florian Weimer <fw@deneb.enyo.de>
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Subject: Re: [PATCH 0/2] nptl: Update struct pthread_unwind_buf
Date: Sun, 25 Feb 2018 10:26:05 +0100
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Cc: "Carlos O'Donell" <carlos@redhat.com>,  GNU C Library <libc-alpha@sourceware.org>
To: "H.J. Lu" <hjl.tools@gmail.com>
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	(H. J. Lu's message of "Sat, 24 Feb 2018 18:04:58 -0800")
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* H. J. Lu:

> What have I done wrong?

My understanding (shared by Carlos as far as I know) is that you do
not need to restore the shadow stack pointer when unwinding for
cancellation or thread exit.