linux-kernel - Re: linux-next: Tree for December 3 (cifs)

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: Windows password security audit tool. GUI, reports in PDF.

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

Date:	Mon, 6 Dec 2010 09:40:33 -0600
From:	Shirish Pargaonkar <shirishpargaonkar@...il.com>
To:	Jeff Layton <jlayton@...hat.com>
Cc:	Ingo Molnar <mingo@...e.hu>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	Steve French <sfrench@...ba.org>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	linux-cifs@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: linux-next: Tree for December 3 (cifs)

On Mon, Dec 6, 2010 at 6:35 AM, Jeff Layton <jlayton@...hat.com> wrote:
> On Mon, 6 Dec 2010 08:09:56 +0100
> Ingo Molnar <mingo@...e.hu> wrote:
>
>>
>> * Randy Dunlap <randy.dunlap@...cle.com> wrote:
>>
>> > On Fri, 3 Dec 2010 13:04:40 +1100 Stephen Rothwell wrote:
>> >
>> > > Hi all,
>> > >
>> > > Changes since 20101202:
>> >
>> >
>> > When CIFS_EXPERIMENTAL is not enabled:
>> >
>> > (.text+0xdf6c9): undefined reference to `get_cifs_acl'
>> >
>> > from fs/cifs/xattr.c:cifs_getxattr()
>> >
>> >
>> > CONFIG_CIFS=y
>> > # CONFIG_CIFS_STATS is not set
>> > CONFIG_CIFS_WEAK_PW_HASH=y
>> > # CONFIG_CIFS_UPCALL is not set
>> > CONFIG_CIFS_XATTR=y
>> > CONFIG_CIFS_POSIX=y
>> > # CONFIG_CIFS_DEBUG2 is not set
>> > # CONFIG_CIFS_DFS_UPCALL is not set
>> > CONFIG_CIFS_FSCACHE=y
>> > CONFIG_CIFS_ACL=y
>> > # CONFIG_CIFS_EXPERIMENTAL is not set
>>
>> And this build regression has been pushed upstream now, as of:
>>
>>    8520eeaa1235: Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
>>
>> and it is triggering for me too:
>>
>>    fs/built-in.o: In function `cifs_getxattr':
>>    (.text+0xc518e): undefined reference to `get_cifs_acl'
>>
>> The regression got introduced by:
>>
>>    fbeba8bb16d7: cifs: Handle extended attribute name cifs_acl to generate cifs acl blob (try #4)
>>
>> Which introduced the new CIFS_ACL option.
>>
>> Thanks,
>>
>>       Ingo
>
> Yeah, looks like this new Kconfig option depends on some code that's
> under the (much-overloaded) CIFS_EXPERIMENTAL Kconfig option. I think
> this patch needs some rework. The simple fix would be to make it
> dependent on CIFS_EXPERIMENTAL, but that's rather icky since

Making CONFIG_CIFS_ACL dependent on CONFIG_CIFS_EXPERIMENTAL
works

 config CIFS_ACL
          bool "Provide CIFS ACL support (EXPERIMENTAL)"
-         depends on EXPERIMENTAL && CIFS_XATTR
+         depends on CIFS_EXPERIMENTAL && CIFS_XATTR
          help
            Allows to fetch CIFS/NTFS ACL from the server.  The DACL blob
            is handed over to the application/caller.

At the minimum function find_readable_file() and three functions
in cifssmb.c would not have to be in CIFS_EXPERIMENTAL.
And we would need to move some other cifs acl related functions
from under CIFS_ACL from CIFS_EXPERIMENTAL.

> CIFS_EXPERIMENTAL pulls in some rather broken stuff...
>
> --
> Jeff Layton <jlayton@...hat.com>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-cifs" in
> the body of a message to majordomo@...r.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/