Re: [PATCH v3] ipc,shm: disable shmmax and shmall by default

[Davidlohr Bueso]

On Fri, 2014-04-18 at 11:26 +0200, Manfred Spraul wrote:
> Hi Davidlohr,
> 
> On 04/18/2014 03:25 AM, Davidlohr Bueso wrote:
> > So a value of 0 bytes or pages, for shmmax and shmall, respectively,
> > implies unlimited memory, as opposed to disabling sysv shared memory.
> That might be a second risk:
> Right now, a sysadmin can prevent sysv memory allocations with
> 
>      # sysctl kernel.shmall=0

Yeah, I had pointed this out previously, and it is addressed in the
changelog. shmall = 0 directly contradicts size < shmmin = 1, so I don't
know who's wrong there...

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