linux-kernel - Re: [PATCH v2 2/3] mmc: add module param to set fault injection attributes

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: <CAJ0pr186Q-Yk=O8PEJYBDijFoj3AAUNLoZexbXqb9t8czCp86A@mail.gmail.com>
Date:	Wed, 14 Sep 2011 13:31:25 +0200
From:	Per Forlin <per.forlin@...aro.org>
To:	Akinobu Mita <akinobu.mita@...il.com>
Cc:	linaro-dev@...ts.linaro.org,
	Linus Walleij <linus.walleij@...aro.org>,
	linux-mmc@...r.kernel.org, Chris Ball <cjb@...top.org>,
	Randy Dunlap <rdunlap@...otime.net>, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/3] mmc: add module param to set fault injection attributes

On 14 September 2011 12:38, Per Forlin <per.forlin@...aro.org> wrote:
> On 14 September 2011 12:18, Per Forlin <per.forlin@...aro.org> wrote:
>> On 14 September 2011 12:05, Akinobu Mita <akinobu.mita@...il.com> wrote:
>>> 2011/9/14 Per Forlin <per.forlin@...aro.org>:
>>>
>>>> +#ifdef CONFIG_FAIL_MMC_REQUEST
>>>> +
>>>> +static DECLARE_FAULT_ATTR(fail_default_attr);
>>>> +static char *fail_request;
>>>
>>> This is not used anymore and ...
>>>
>> Yes of course. Will remove it.
>>
>>>> +static int fail_mmc_request_param_set(const char *val,
>>>> +                                     const struct kernel_param *kp)
>>>> +{
>>>> +       setup_fault_attr(&fail_default_attr, (char *) val);
> I am thinking of returning failure here if setup_fault_attr() fails.
> if (setup_fault_attr(&fail_default_attr, (char *) val) == 0)
>  return -EINVAL;
>
> There will be a printk(KERN_WARNING "FAULT_INJECTION: failed to parse
> arguments) it setup() fails. Is it too harsh to return failure?
>
If error is returned here the kernel prints: "invalid for parameter
`mmc_core.fail_request'"
This piece of information is a reason for returning error on failure.

Regards,
Per
--
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/