linux-kernel - Re: [digsig:dmi 20/35] WARNING: security/integrity/built-in.o(.text+0x1d8): Section mismatch in reference from the function integrity_inode_free() to the variable .init.data:ima_use

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] [day] [month] [year] [list]

Date:	Wed, 07 Nov 2012 15:36:18 -0800
From:	Chris Zankel <chris@...kel.net>
To:	Fengguang Wu <fengguang.wu@...el.com>
CC:	"Kasatkin, Dmitry" <dmitry.kasatkin@...el.com>,
	Sam Ravnborg <sam@...nborg.org>,
	Mimi Zohar <zohar@...ux.vnet.ibm.com>,
	linux-security-module@...r.kernel.org,
	linux-kbuild <linux-kbuild@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [digsig:dmi 20/35] WARNING: security/integrity/built-in.o(.text+0x1d8):
 Section mismatch in reference from the function integrity_inode_free() to
 the variable .init.data:ima_use_tcb

Pressed the 'send' button a bit too fast.

On 11/07/2012 03:31 PM, Chris Zankel wrote:
> Hi,
>
> Looking a bit into it, I think modpost is broken. I'm working on a fix.
This is specific to Xtensa. Symbols are stored in a separate '.lit'
section, but modpost doesn't seem to currently resolve it correctly.

Cheers!
-Chris

>
> Cheers!
> -Chris
>
> On 11/06/2012 03:57 AM, Fengguang Wu wrote:
>> Perhaps we should CC more people..
>>
>> On Tue, Nov 06, 2012 at 01:47:18PM +0200, Kasatkin, Dmitry wrote:
>>> On Tue, Nov 6, 2012 at 1:41 PM, Fengguang Wu <fengguang.wu@...el.com> wrote:
>>>> On Tue, Nov 06, 2012 at 01:16:16PM +0200, Kasatkin, Dmitry wrote:
>>>>> Hi,
>>>>>
>>>>> I do not see that integrity_inode_free() uses ima_use_tcb.
>>>>>
>>>>> I think it is false positive.
>>>> Interestingly, when trying to reproduce the problem, I got this
>>>> slightly different message:
>> Now after make clean, I get both the warnings on ima_use_tcb and
>> chosen_lsm.
>>
>>>> WARNING: security/built-in.o(.text+0x2b68c): Section mismatch in reference from the function integrity_inode_free() to the variable .init.d
>>>> ata:chosen_lsm
>>>> The function integrity_inode_free() references
>>>> the variable __initdata chosen_lsm.
>>>> This is often because integrity_inode_free lacks a __initdata
>>>> annotation or the annotation of chosen_lsm is wrong.
>>>>
>>> Hello,
>>>
>>> chosen_lsm has nothing to do with integrity subsystem, though
>>> integrity_inode_free() is called from security_inode_free(),
>>> which is part of security subsystem files which uses chosen_lsm...
>>>
>>> That is very strange.
>>>
>>> - Dmitry
>>>
>>>
>>>> Thanks,
>>>> Fengguang
>>>>
>>>>> On Wed, Oct 31, 2012 at 5:11 PM, kbuild test robot
>>>>> <fengguang.wu@...el.com> wrote:
>>>>>> tree:   git://git.kernel.org/pub/scm/linux/kernel/git/kasatkin/linux-digsig.git dmi
>>>>>> head:   2309bb884f94d84ecb1a6a176d3e8199de7d6dad
>>>>>> commit: 13ba29dcf6f0021a14a04f6f3a4560a399c02b34 [20/35] integrity: create and inititialize a keyring with builtin public key
>>>>>> config: make ARCH=xtensa allyesconfig
>>>>>>
>>>>>> All warnings:
>>>>>>
>>>>>> WARNING: security/integrity/built-in.o(.text+0x1d8): Section mismatch in reference from the function integrity_inode_free() to the variable .init.data:ima_use_tcb
>>>>>> The function integrity_inode_free() references
>>>>>> the variable __initdata ima_use_tcb.
>>>>>> This is often because integrity_inode_free lacks a __initdata
>>>>>> annotation or the annotation of ima_use_tcb is wrong.
>>>>>>
>>>>>> ---
>>>>>> 0-DAY kernel build testing backend         Open Source Technology Center
>>>>>> Fengguang Wu, Yuanhan Liu                              Intel Corporation
>> --
>> 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/

--
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/