Why doesn't kill work?
Jesus M. Rodriguez
jmrodri at gmail.com
Fri Jan 28 02:09:45 UTC 2005
Try kill -9 <pid> sometimes kill doesn't work. When in doubt -9 it :)
Works everytime. CTRL+Z simply puts it into the background.
Jesus
On Thu, 27 Jan 2005 21:04:16 -0500, David Liguori <liguorid at albany.edu> wrote:
> In another thread a user having problems with yum killed it. I am
> curious how he accomplished that. When I run yum (or any other command,
> for that matter), it stalls, and I stop it with ctrl-z, the following
> happens:
>
> [1]+ Stopped yum update
> [root at tabby ~]# ps
> PID TTY TIME CMD
> 6179 pts/0 00:00:00 su
> 6182 pts/0 00:00:00 bash
> 6214 pts/0 00:00:21 yum
> 6220 pts/0 00:00:00 ps
> [root at tabby ~]# kill 6214
> [root at tabby ~]# ps
> PID TTY TIME CMD
> 6179 pts/0 00:00:00 su
> 6182 pts/0 00:00:00 bash
> 6214 pts/0 00:00:21 yum ##still running!
> 6221 pts/0 00:00:00 ps
> [root at tabby ~]# exit
> logout
> There are stopped jobs. ##still running!
> [root at tabby ~]#
>
> As you see, the kill command produces no output here, but if I make up a
> pid at random it complains no such pid exists.
>
> I'm running a single Athlon 1 gHz processor, if that is important.
>
> When I search Bugzilla for "kill" the only relevant hits are from ages
> ago in RH 5.1 or so, where a few lines of code run by a non-root user
> could kill any process regardless of owner (the opposite problem). This
> was apparently fixed and closed. I considered compiling and running the
> program as root to see if I had better luck than with kill, but it
> doesn't really address the issue.
>
> Should I file a Bugzilla report, or am I missing something?
>
> --
> David Liguori
>
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