Re: [Xen-devel] [PATCH 2/2] libxl: fix stale timeout event callback race

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

Ian Jackson writes ("Re: [Xen-devel] [PATCH 2/2] libxl: fix stale timeout event 
callback race"):
> Jim Fehlig writes ("Re: [Xen-devel] [PATCH 2/2] libxl: fix stale timeout 
> event callback race"):
> > - gettimeofday(&now, NULL);
> > - timeout = (abs_t.tv_usec - now.tv_usec) / 1000;
> > - timeout += (abs_t.tv_sec - now.tv_sec) * 1000;
> 
> Specifically, this code has an integer arithmetic overflow.

If you look at beforepoll_internal in libxl_event.c, near line 859,
you can see how I tackled this same problem there.

Ian.

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