[asterisk-dev] "Issue #6439 - the "timebomb" bug. Patch by Markster over GPRS"

Domjan Attila adomjan at tvnet.hu
Wed Jan 25 07:05:17 MST 2006


My x86_64 box was affected...

On Wed, 2006-01-25 at 04:06 -0800, Luigi Rizzo wrote:
> On Wed, Jan 25, 2006 at 11:33:14AM +0100, Tamas wrote:
> > Hello,
> > 
> > anybody knows any explanation of this issue? When it came into the
> > system what was the problem?
> 
> the problem was an overflow in the computation of
> a difference between two struct timeval, and it occurred
> because one of the parameter was set to 0 instead of
> a time in the vicinity of the current date.
> Probably 64-bit machines were not affected.
> The bug would come out with a period of roughly every 2^22 seconds,
> which is not _that_ long. We were just lucky (or unlucky)
> that it did not come out earlier.
> On the other hand, for similar bugs, a missile (Ariane ?)
> came down a few years ago, so we are not the first nor
> the last to experience these things...
> 
> cheers
> luigi
> 
> > Unfortunately some of our  call centers 'died' yesterday evening and we
> > have to make some explanation to the customer.
> > 
> > The given patch solved the problem.
> > 
> > Thanks in advance,
> >     Tamas
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