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SubjectRe: [Latest Git kernel/Linux-next kernel] Xorg doesn't start after the seccomp updates v5.9-rc1
On Fri, Aug 07, 2020 at 04:45:14PM +0200, Christian Zigotzky wrote:
> But Xorg works on Ubuntu 10.04.4 (PowerPC 32-bit), openSUSE Tumbleweed
> 20190722 PPC64 and on Fedora 27 PPC64 with the latest Git kernel.
>
> I bisected today [4].
>
> Result: net/scm: Regularize compat handling of scm_detach_fds()
> (c0029de50982c1fb215330a5f9d433cec0cfd8cc) [5] is the first bad commit.
>
> This commit has been merged with the seccomp updates v5.9-rc1 on 2020-08-04
> 14:11:08 -0700 [1]. Since these updates, Xorg doesn't start anymore on some
> Linux distributions.

Hi! Thanks for bisecting; yes, sorry for the trouble (I'm still trying
to understand why my compat tests _passed_...). Regardless, can you try
this patch:

https://lore.kernel.org/lkml/20200807173609.GJ4402@mussarela/

--
Kees Cook

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