stable [PATCH] can: dev: fix crtlmode_supported check

[Oliver Hartkopp]

Hello all,

just in the case you are interested to pick these patches up for 3.13 and 3.16
stable:

The backported patch for Linux 3.2 ... 3.14 has been applied by GregKH for the 
3.10 kernel here:

http://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?h=linux-3.10.y&id=c5fe617018c5f7b1c8ad6ba96fa65870f6b6858b

And for 3.16 the original patch

http://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?h=linux-3.18.y&id=96bfa3859e9c40f53ecc79ea3c23dbb72188a56b

should work.

Thanks & best regards,
Oliver

On 28.01.2015 09:25, Marc Kleine-Budde wrote:
> On 01/27/2015 08:12 PM, Oliver Hartkopp wrote:
>> When changing flags in the CAN drivers ctrlmode the provided new content has to
>> be checked whether the bits are allowed to be changed. The bits that are to be
>> changed are given as a bitfield in cm->mask. Therefore checking against
>> cm->flags is wrong as the content can hold any kind of values.
>>
>> The iproute2 tool sets the bits in cm->mask and cm->flags depending on the
>> detected command line options. To be robust against bogus user space
>> applications additionally sanitize the provided flags with the provided mask.
>>
>> (Backport of upstream commit 9b1087aa5e86448fe6ad40a58964e35f3ba423d5 for
>> Linux 3.2 .. Linux 3.14)
>
> Zefan Li <lizefan at huawei.com> is taking care of v3.4
>
> Marc
>