Re: LTP 20080131 causes defunct processes w/2.6.30-rc1 (possible ptrace issue?)

[Kumar Gala]

On Apr 9, 2009, at 8:03 PM, Sukadev Bhattiprolu wrote:

> > -bash-3.2# ps
> > PID TTY          TIME CMD
> > 2289 ttyS0    00:00:00 bash
> > 2310 ttyS0    00:00:00 runltp
> > 2412 ttyS0    00:00:00 pan
> > 2448 ttyS0    00:00:00 recv01 <defunct>
> > 2450 ttyS0    00:00:00 recvfrom01 <defunct>
> > 2452 ttyS0    00:00:00 recvmsg01 <defunct>
> > 2473 ttyS0    00:00:00 rename14
> > 2474 ttyS0    00:00:01 rename14
> > 2477 ttyS0    00:00:00 rename14
> > 2481 ttyS0    00:00:00 ps
> > -bash-3.2# cat /proc/1/status
> > Name:   init
> > State:  T (stopped)
>
> init is in the stopped state.  Can you run "kill -CONT 1" ?

yes

> > Tgid:   1
> > Pid:    1
> > PPid:   0
> > TracerPid:      0
> > Uid:    0       0       0       0
> > Gid:    0       0       0       0
> > FDSize: 32
> > Groups:
> > VmPeak:     1948 kB
> > VmSize:     1944 kB
> > VmLck:         0 kB
> > VmHWM:       648 kB
> > VmRSS:       648 kB
> > VmData:      164 kB
> > VmStk:        84 kB
> > VmExe:       288 kB
> > VmLib:      1124 kB
> > VmPTE:        20 kB
> > Threads:        1
> > SigQ:   8/16384
> > SigPnd: 0000000000000000
> > ShdPnd: 0000000000010000
>
> Init does have the pending SIGCHLD, so the zombies should go away
> when init gets the SIGCONT.

That seems to clear it up.. But why has the behavior changed?  I  
didn't have to do the "kill -CONT 1" on 2.6.29.

- k
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