linux-kernel - wine fails to start with seccomp updates for v5.9-rc1

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Message-Id: <1596812929.lz7fuo8r2w.none@localhost>
Date:   Fri, 07 Aug 2020 11:19:09 -0400
From:   "Alex Xu (Hello71)" <alex_y_xu@...oo.ca>
To:     Kees Cook <keescook@...omium.org>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-kernel@...r.kernel.org, Aleksa Sarai <cyphar@...har.com>,
        Chris Palmer <palmer@...gle.com>,
        Christian Brauner <christian.brauner@...ntu.com>,
        Christoph Hellwig <hch@....de>,
        Matt Denton <mpdenton@...gle.com>,
        Robert Sesek <rsesek@...gle.com>,
        Thadeu Lima de Souza Cascardo <cascardo@...onical.com>,
        Sargun Dhillon <sargun@...gun.me>,
        Shuah Khan <shuah@...nel.org>, Tycho Andersen <tycho@...ho.ws>,
        Will Deacon <will@...nel.org>, Will Drewry <wad@...omium.org>,
        Yonghong Song <yhs@...com>
Subject: wine fails to start with seccomp updates for v5.9-rc1

Hi,

On Linus' master, wine fails to start with the following error:

wine client error:0: write: Bad file descriptor

This issue is not present on 5.8. It appears to be caused by failure to 
write to a pipe FD received via SCM_RIGHTS. Therefore, I tried reverting 
9ecc6ea491f0, which resolved the issue.

Thanks,
Alex.