Re: [PATCH] lib/string_helpers.c: fix infinite loop in string_get_size()

[Andrew Morton]

On Fri,  4 Sep 2015 14:56:33 +0200 Vitaly Kuznetsov <vkuznets@xxxxxxxxxx> wrote:

> string_get_size(1, 512, 0, ..., ...) call results in an infinite loop. The
> problem is that if size == 0 when we start calculating sf_cap this loop
> will never end.
> 
> The caller causing the issue is sd_read_capacity(), the problem was noticed
> on Hyper-V.

When fixing bugs, please provide enough info for others to be able to
understand which kernel version(s) need the fix.  In this case: what
end-user action triggers this bug?  (iow, how does sdkp->capacity
become zero?)




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