Re: [PATCH v6] scatterlist: prevent invalid free when alloc fails

[Jens Axboe]

On 2010-08-30 18:19, Jeffrey Carlyle wrote:
> When alloc fails, free_table is being called. Depending on the number of
> bytes requested, we determine if we are going to call _get_free_page()
> or kmalloc(). When alloc fails, our math is wrong (due to sg_size - 1),
> and the last buffer is wrongfully assumed to have been allocated by
> kmalloc. Hence, kfree gets called and a panic occurs.

That's a lot of revs, thanks for getting it done (and Tejun for
the careful reviews).

-- 
Jens Axboe

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