[PATCH 0/1] ipc/shm: fix the historical/wrong mm->start_stack check

[Oleg Nesterov]

On 08/23, Oleg Nesterov wrote:
>
> But for what? Ignoring the (I think buggy) check in do_shmat() ->start_stack
> is simply unused, we only report it via /proc/.

Really, I think do_shmat() should not abuse ->start_stack. Not only it is
wrong and unneeded afaics, do_shmat() is the only user of ->start_stack,
this adds more confusion.

Oleg.

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