Re: Runaway cron task on 2.5.63/4 bk?

[Andrew Morton <akpm@digeo.com>]

Andrew Morton <akpm@digeo.com> wrote:
>
> errr, OK.  This returns -EINVAL:
> 
> #include <time.h>
> 
> main()
> {
> 	struct timespec req;
> 	struct timespec rem;
> 	int ret;
> 
> 	req.tv_sec = 5000000;
> 	req.tv_nsec = 0;
> 
> 	ret = nanosleep(&req, &rem);
> 	if (ret)
> 		perror("nanosleep");
> }
> 

OK, I give up.

			/*
			 * This is a considered response, not exactly in
			 * line with the standard (in fact it is silent on
			 * possible overflows).  We assume such a large 
			 * value is ALMOST always a programming error and
			 * try not to compound it by setting a really dumb
			 * value.
			 */
			return -EINVAL;

George, RH7.3 and RH8.0 cron daemons are triggering this (trying to sleep
for 4,500,000 seconds) and it causes them to go into a busy loop.

I think we need to just sleep for as long as we can and return an
appropriate partial result.