Linux 4.11 - broken enlightenment window manager (fixed in 4.12)

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Subject: Linux 4.11 - broken enlightenment window manager (fixed in 4.12)
From: Ralph Sennhauser <ralph.sennhauser@xxxxxxxxx>
Date: Fri, 9 Jun 2017 09:35:09 +0200
Cc: stable@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
Organization: none

Hi Greg,

With 4.11 the enlightenment window mangers fails to start setuid
children due to commit 64b875f7ac8a ("ptrace: Capture the ptracer's
creds not PT_PTRACE_CAP").

Commit c70d9d809fde ("ptrace: Properly initialize ptracer_cred on
fork") in Linus tree fixes the issue. Tested with v4.11.4. Please
consider cherry-picking.

Thanks
Ralph

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