Re: [PATCH -next] spi: Fix double IDR allocation with DT aliases

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Wed, Aug 22, 2018 at 08:51:40PM +0300, Kirill Kapranov wrote:

Please don't top post, reply in line with needed context.  This allows
readers to readily follow the flow of conversation and understand what
you are talking about and also helps ensure that everything in the
discussion is being addressed.

> I have to point at the following threat: a dynamically allocated ID may
> 'squat' a bus ID that intended for a device with statically allocated ID.
> This scenario is possible since module loading order is uncertain.
> This threat seems to be inevitable...

For DT systems the dynamically allocated IDs start at the maximum
positive ID and work down so in practice it is vanishingly unlikely that
there will be a collision as idiomatic static DT IDs would be low
integers.

Attachment: signature.asc
Description: PGP signature


[Index of Archives]     [Linux Samsung SOC]     [Linux Wireless]     [Linux Kernel]     [ATH6KL]     [Linux Bluetooth]     [Linux Netdev]     [Kernel Newbies]     [IDE]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux ATA RAID]     [Samba]     [Device Mapper]

  Powered by Linux