Re: GCC: Attempting to run tests as "tester" user results in "su: Cannot drop the controlling terminal"

Xi Ruoyao ([email protected] via lfs-support Mailing List) <[email protected]> wrote:
>On Fri, 2025-01-10 at 22:22 +0000, kevadesu wrote:
>&gt; Hi everyone, after a flawless run through the LFS book so far,
>&gt; After building GCC, I get the following errors:
>&gt; 
>&gt; (lfs chroot) root:/sources/gcc/build# chown -R tester .
>&gt; (lfs chroot) root:/sources/gcc/build# su tester -c &quot;PATH=$PATH make -k check&quot;
>&gt; su: Cannot drop the controlling terminal
>&gt; (lfs chroot) root:/sources/gcc/build# su tester
>&gt; Cannot execute /bin/bash: Permission denied
>&gt; 
>&gt; Could there be anything wrong with any of the steps I did?
>
>Quote from another user who hit this several days ago:
>
>&gt;    Looks like it was a permission issue.
>&gt; chmod 755 /bin   fixes it
>
>But I&#x27;m really skeptical about this &quot;fix.&quot;  Can you try &quot;chmod -v 755
>/bin&quot; to see if it works, and also reply with the output of this
>command?
>
>-- 
>Xi Ruoyao &lt;[email protected]&gt;
>School of Aerospace Science and Technology, Xidian University
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>http://lists.linuxfromscratch.org/sympa/info/lfs-support
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Here's the output:

 ~  sudo chroot "$LFS" /usr/bin/env -i   \
                HOME=/root                  \
                TERM="$TERM"                \
                PS1='(lfs chroot) \u:\w\$ ' \
                PATH=/usr/bin:/usr/sbin     \
                MAKEFLAGS="-j$(nproc)"      \
                TESTSUITEFLAGS="-j$(nproc)" \
                /bin/bash --login
[sudo] password for kevadesu: 
(lfs chroot) root:/# cd sources/gcc/build
(lfs chroot) root:/sources/gcc/build# chmod -v 755 /bin
mode of '/bin' retained as 0755 (rwxr-xr-x)
(lfs chroot) root:/sources/gcc/build# su tester -c "PATH=$PATH make -k check"
su: Cannot drop the controlling terminal
(lfs chroot) root:/sources/gcc/build# su tester
Cannot execute /bin/bash: Permission denied
(lfs chroot) root:/sources/gcc/build#

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