Re: [RESEND PATCH] sgl_alloc_order: fix memory leak

[Jens Axboe]

On 10/15/20 12:57 PM, Douglas Gilbert wrote:
> sgl_alloc_order() can fail when 'length' is large on a memory
> constrained system. When order > 0 it will potentially be
> making several multi-page allocations with the later ones more
> likely to fail than the earlier one. So it is important that
> sgl_alloc_order() frees up any pages it has obtained before
> returning NULL. In the case when order > 0 it calls the wrong
> free page function and leaks. In testing the leak was
> sufficient to bring down my 8 GiB laptop with OOM.

I've picked this one up, thanks.

-- 
Jens Axboe