Reproducible "calcru: negative time ..." on SMP system

[Jilles Tjoelker]

On Sun, Feb 08, 2004 at 06:38:21PM -0800, Kris Kennaway wrote:
> I discovered that on a 5.2-BETA SMP system I can cause

> Feb  8 18:29:32 <kern.crit> bento kernel: calcru: negative time of 6816 usec for pid 50286 (grep)
> Feb  8 18:29:41 <kern.crit> bento kernel: calcru: negative time of 7308 usec for pid 51007 (grep)
> Feb  8 18:30:41 <kern.crit> bento kernel: calcru: negative time of 6104 usec for pid 54944 (grep)
> Feb  8 18:30:42 <kern.crit> bento kernel: calcru: negative time of 5933 usec for pid 54962 (grep)

> by running a shell script that does lots of greps, and leaning on the
> ^T key in the shell to send the process lots of SIGINFOs.

This may be the same as kern/52490: ^T'ing a zombie causes calcru() to
be called on a zombie which prints the negative time message.

-- 
Jilles Tjoelker