linux-kernel - Re: [PATCH] FS: Fixing return type of unsigned

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20170511060744.GJ390@ZenIV.linux.org.uk>
Date:   Thu, 11 May 2017 07:07:44 +0100
From:   Al Viro <viro@...IV.linux.org.uk>
To:     Pushkar Jambhlekar <pushkar.iit@...il.com>
Cc:     Joe Perches <joe@...ches.com>, linux-fsdevel@...r.kernel.org,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] FS: Fixing return type of unsigned_offsets

On Thu, May 11, 2017 at 10:34:02AM +0530, Pushkar Jambhlekar wrote:
> If I remove '!!', sparse flags warning:
> 
> fs/read_write.c:38:29: warning: incorrect type in return expression
> (different base types)
> fs/read_write.c:38:29:    expected bool
> fs/read_write.c:38:29:    got restricted fmode_t
> 
> It means explicit conversion is needed.

FVO"needed" equal to "needed to make sparse STFU"?  If anything, that's
sparse being wrong - evaluate.c:check_assignment_type() should do
		if (t == &ctype_bool) {
			if (is_fouled_type(s))
				warning((*rp)->pos, "%s degrades to integer",
					show_typename(s->ctype.base_type));
			goto Cast;
                }
right after
                } else if (!(sclass & TYPE_RESTRICT))
                        goto Cast;