On Mon, Feb 21, 2005 at 12:32:33PM +0100, Schwarz wrote: > > > Hi everyone, > > since 2.4.29 we discovered a strange behaviour. > > Severall tasks are no longer detected as destroyed. > means, these tasks have ended but arn't removed from > the processlist. > > An example from today: > > [EMAIL PROTECTED] ]# date > Mon Feb 21 10:14:06 CET 2005 > [EMAIL PROTECTED] ]# strace -p 33326 > attach: ptrace(PTRACE_ATTACH, ...): No such process > [EMAIL PROTECTED] ]# ps aux | grep 29579 > 33326 29579 0.0 0.2 10696 4332 ? SN 10:11 0:00 -f > /home/ajondoco > root 19168 0.0 0.0 1768 628 pts/0 S 10:15 0:00 grep 29579 > [EMAIL PROTECTED] ]# strace -p 33326 > attach: ptrace(PTRACE_ATTACH, ...): No such process > [EMAIL PROTECTED] ]# > > As you can see the process in question "29579" was started > 10:11 , but as finished its activity already. After 10 > minutes it's still not removed from the processlist and > it's not detected as a zombie. > > the task was an Apache 1.3.3 child over a wrapper calling php > with -f option. > > We think it's unimportant if its forked or execev(),because on > another maschine it was not even an apache invoked. > > Some of the these processes enter zombie state, but were never > fully removed ! > > Any ideas why it and what happens?
I don't, no. Quite strange. Can you reproduce this? If sys_ptrace() failed the process is not present. Can you please "cat /proc/<pid>/status" when ptrace fails but the ps shows the process existance ? I suppose you haven't been seeing this behaviour with v2.4.28 ? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
