2001-11-15 07:41:11

by kees

Subject: Q: straced processes don't go away

Hi

In my attempts to find the problem with the tun device I did
a couple of strace sessions.

My processlist now shows a couple of unkillable (kill -KILL )
processes:

444 0 24239 1 9 0 0 0 do_exi RW ? 0:00
[vtund]
444 0 24305 1 8 0 0 0 do_exi RW ? 0:00
[vtund]
444 0 24880 1 9 0 0 0 do_exi RW ? 0:00
[vtund]

kernel 2.4.14 with 2.4.15-pre3 applied

Kees

2001-11-15 13:33:19

by Phil Howard

Subject: Re: Q: straced processes don't go away

On Thu, Nov 15, 2001 at 08:39:30AM +0100, kees wrote:

| In my attempts to find the problem with the tun device I did
| a couple of strace sessions.
|
| My processlist now shows a couple of unkillable (kill -KILL )
| processes:
|
| 444 0 24239 1 9 0 0 0 do_exi RW ? 0:00
| [vtund]
| 444 0 24305 1 8 0 0 0 do_exi RW ? 0:00
| [vtund]
| 444 0 24880 1 9 0 0 0 do_exi RW ? 0:00
| [vtund]
|
| kernel 2.4.14 with 2.4.15-pre3 applied

I've been debugging some timer bugs in a daemon library I'm developing
and have been stracing it. Among many things done are a variety of
kills, including -KILL, -INT, -TERM and -HUP, while being straced.
When I do the kill, I see strace output showing the events correctly
and in the case of -KILL the process definitely goes away.

This is with kernel 2.4.13. So this is not a broad problem and may be
specific to states vtund is in, or changes since 2.4.13, or both.

--
-----------------------------------------------------------------
| Phil Howard - KA9WGN | Dallas | http://linuxhomepage.com/ |
| [email protected] | Texas, USA | http://phil.ipal.org/ |
-----------------------------------------------------------------