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There appears to be a bug in 2.2.5 with the ptrace stuff.  It appears to
only happen on SMP systems. I have found that the process being straced
ends up eventually getting stuck in the stopped state. It's quite easy to
reproduce:

[sroot@oof:/]# strace yes > /dev/null

...wait about a minute or so...

(in another console)

[sroot@oof:/]# ps auxw | grep yes
root 11521 15.4 0.3 936 396 3 S 17:59 0:34 strace yes
root 11522 49.7 0.2 836 268 3 T 17:59 1:51 yes
root 11533 0.0 0.2 952 312 4 S 18:01 0:00 grep yes

kill -CONT 11522 would make it continue again as normal until the next
time it occurs.

(Using strace version 3.1.0.1)

Simon-


| Simon Kirby | Systems Administration |
| mailto:sim@netnation.com | NetNation Communications |
| http://www.netnation.com/ | Tech: (604) 684-6892 |




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