linux-kernel - Re: [PATCH v2] lockdown,selinux: avoid bogus SELinux lockdown permission checks

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Message-ID: <20210528095800.06b6547d@gandalf.local.home>
Date:   Fri, 28 May 2021 09:58:00 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Ondrej Mosnacek <omosnace@...hat.com>
Cc:     linux-security-module@...r.kernel.org,
        James Morris <jmorris@...ei.org>,
        Ingo Molnar <mingo@...hat.com>,
        Stephen Smalley <stephen.smalley.work@...il.com>,
        selinux@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        linux-fsdevel@...r.kernel.org, bpf@...r.kernel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Casey Schaufler <casey@...aufler-ca.com>
Subject: Re: [PATCH v2] lockdown,selinux: avoid bogus SELinux lockdown
 permission checks

On Mon, 17 May 2021 11:20:06 +0200
Ondrej Mosnacek <omosnace@...hat.com> wrote:

> diff --git a/fs/tracefs/inode.c b/fs/tracefs/inode.c
> index 1261e8b41edb..7edde3fc22f5 100644
> --- a/fs/tracefs/inode.c
> +++ b/fs/tracefs/inode.c
> @@ -396,7 +396,7 @@ struct dentry *tracefs_create_file(const char *name, umode_t mode,
>  	struct dentry *dentry;
>  	struct inode *inode;
>  
> -	if (security_locked_down(LOCKDOWN_TRACEFS))
> +	if (security_cred_locked_down(NULL, LOCKDOWN_TRACEFS))
>  		return NULL;
>  
>  	if (!(mode & S_IFMT))

Acked-by: Steven Rostedt (VMware) <rostedt@...dmis.org>

-- Steve