On Fri, 2015-09-11 at 18:31 +0000, James Bottomley wrote: > On Thu, 2015-09-10 at 16:08 -0700, Andrew Morton wrote: > > On Fri, 4 Sep 2015 14:56:33 +0200 Vitaly Kuznetsov < > > [email protected]> 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?) > > Any more details. The attached programme, which is cut straight out > of > the algorithm in string_helpers.c and modified for a C environment > slightly (only in do_div and the typedefs) produces this > > hello > STRING IS 512 B > > With your input, so I don't think the problem is where you think it > is. > > James >
Vitaly, it might make sense to extend test-string_helpers.c to what you are trying to do right. -- Andy Shevchenko <[email protected]> Intel Finland Oy -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
