Hi Thomas,
Axel Beckert wrote:
> It looks different thoug today:
>
> 26243 root 20 0 538M 141M 704 S 0.0 0.2 0:00.01 | | | `-
> aptitude -u
> 26404 root 20 0 4304 744 664 S 0.0 0.0 0:00.00 | | | | `-
> sh -c test -x /usr/lib/needrestart/apt-pinvoke && /usr/lib/needrestart/apt-pin
> 26405 root 20 0 60732 17968 4276 S 0.0 0.0 0:00.13 | | | |
> `- /usr/bin/perl -w /usr/share/debconf/frontend /usr/sbin/needrestart
> 27204 root 20 0 19544 2824 2288 S 0.0 0.0 0:00.00 | | | |
> `- whiptail --backtitle Package configuration --title Pending kernel upgrad
> 26413 root 20 0 54524 17880 4128 S 0.0 0.0 0:00.31 | | | |
> `- /usr/bin/perl /usr/sbin/needrestart
> 27198 root 20 0 0 0 0 Z 0.0 0.0 0:00.00 | | | |
> `- 10-dpkg
>
> So this time another child is a zombie.
Nah, that was a false positive. It was just taking quite long and that
was a dialog waiting for input. Nevertheless it still hung at the end:
26243 root 20 0 538M 141M 704 S 0.0 0.2 0:00.01 | | | `-
aptitude -u
26404 root 20 0 4304 744 664 S 0.0 0.0 0:00.00 | | | | `-
sh -c test -x /usr/lib/needrestart/apt-pinvoke &&
/usr/lib/needrestart/apt-pinvok
26405 root 20 0 60864 18140 4276 S 0.0 0.0 0:00.14 | | | |
`- /usr/bin/perl -w /usr/share/debconf/frontend /usr/sbin/needrestart
26413 root 20 0 0 0 0 Z 0.0 0.0 0:00.39 | | | |
`- /usr/bin/perl /usr/sbin/needrestart
So it's actually debconf which fails to end needrestart cleanly as it
did in my initial bug report.
stracing debconf/frontend shows that it seems to wait for input on
file descriptor 9:
# strace -p 26405
strace: Process 26405 attached
read(9,
According to /proc/26405/fd/9 that's a pipe:
lr-x------ 1 root root 64 Aug 16 20:41 /proc/26405/fd/9 -> pipe:[54970896]
Looking for the other end of that pipe, it seems to be this process:
l-wx------ 1 root root 64 Aug 16 20:41 /proc/32724/fd/1 -> pipe:[54970896]
which belongs to this process:
root 32724 0.0 0.0 47040 2496 ? S 20:26 0:00
/usr/sbin/consolation
Stopping the consolation service already sufficed to fix the hanging
debconf and the needrestart zombie, at least in this case.
Now the question is, where is the bug hidden?
* Why does consolation influence debconf? Or does it influence
needrestart?
* Could it be relevant, that needrestart/debconf ran inside a screen
session?
* Could it be relevant, that I have gpm or consolelog installed, too?
But then again, that bug hit me the first time when consolation wasn't
yet in Debian at all. So just a coincidence?
Regards, Axel
--
,''`. | Axel Beckert <a...@debian.org>, http://people.debian.org/~abe/
: :' : | Debian Developer, ftp.ch.debian.org Admin
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