linux-kernel - Re: [PATCH] fs/xattr.c: fix simple_xattr

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Message-ID: <CAHC9VhRSAaENMnEYXrPTY4Z4sPO_s4fSXF=rEUFuEEUg6Lz21Q@mail.gmail.com>
Date: Tue, 10 Jun 2025 19:50:10 -0400
From: Paul Moore <paul@...l-moore.com>
To: linux-fsdevel@...r.kernel.org, Alexander Viro <viro@...iv.linux.org.uk>, 
	brauner@...nel.org
Cc: Collin Funk <collin.funk1@...il.com>, 
	Stephen Smalley <stephen.smalley.work@...il.com>, linux-kernel@...r.kernel.org, 
	selinux@...r.kernel.org, eggert@...ucla.edu, bug-gnulib@....org
Subject: Re: [PATCH] fs/xattr.c: fix simple_xattr_list()

On Fri, Jun 6, 2025 at 1:39 AM Collin Funk <collin.funk1@...il.com> wrote:
> Paul Moore <paul@...l-moore.com> writes:
> >> <stephen.smalley.work@...il.com> wrote:
> >> >
> >> > commit 8b0ba61df5a1 ("fs/xattr.c: fix simple_xattr_list to always
> >> > include security.* xattrs") failed to reset err after the call to
> >> > security_inode_listsecurity(), which returns the length of the
> >> > returned xattr name. This results in simple_xattr_list() incorrectly
> >> > returning this length even if a POSIX acl is also set on the inode.
> >> >
> >> > Reported-by: Collin Funk <collin.funk1@...il.com>
> >> > Closes: https://lore.kernel.org/selinux/8734ceal7q.fsf@gmail.com/
> >> > Reported-by: Paul Eggert <eggert@...ucla.edu>
> >> > Closes: https://bugzilla.redhat.com/show_bug.cgi?id=2369561
> >> > Fixes: 8b0ba61df5a1 ("fs/xattr.c: fix simple_xattr_list to always include security.* xattrs")
> >> >
> >> > Signed-off-by: Stephen Smalley <stephen.smalley.work@...il.com>
> >> > ---
> >> >  fs/xattr.c | 1 +
> >> >  1 file changed, 1 insertion(+)
> >>
> >> Reviewed-by: Paul Moore <paul@...l-moore.com>
> >
> > Resending this as it appears that Stephen's original posting had a
> > typo in the VFS mailing list.  The original post can be found in the
> > SELinux archives:
> >
> > https://lore.kernel.org/selinux/20250605164852.2016-1-stephen.smalley.work@gmail.com/
>
> Hi, responding to this message since it has the correct lists.
>
> I just booted into a kernel with this patch applied and confirm that it
> fixes the Gnulib tests that were failing.
>
> Reviewed-by: Collin Funk <collin.funk1@...il.com>
> Tested-by: Collin Funk <collin.funk1@...il.com>
>
> Thanks for the fix.

Al, Christian, are either of you going to pick up this fix to send to
Linus?  If not, any objection if I send this up?

-- 
paul-moore.com