dlm: check the maximum size of a request from user
On Sun, Sep 09, 2012 at 04:16:58PM +0200, Sasha Levin wrote:
> device_write only checks whether the request size is big enough, but it doesn't
> check if the size is too big.
> At that point, it also tries to allocate as much memory as the user has requested
> even if it's too much. This can lead to OOM killer kicking in, or memory corruption
> if (count + 1) overflows.
thanks, pushed to next
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