Bug 75826

Created attachment 80204 [details]
strace of rpm dying

This is a deadlock, probably stale, of unknown origin.

So what caused the lock? ^C on previous execution?

Created attachment 80828 [details]
Another occurence of this...

This looks very similar to what I currently experience. I have not tried 
db_recover (yet, in case you need more info). 

I believe this happened when I was running up2date (I was waiting for the 
initial download of the package descriptions) and then started an rpm -e... 
before up2date was finished (in the expectation that if there ever was a 
conflict between them the rpm -e would stop).

I did a ctrl-c on a previous session, when uninstalling a rpm from lexmark for
their linux printer control program.  (i can find the url of if if you want). 
The post-uninstall script was sitting there idle for over 5 minutes.  If i
recall correctly, ctrl-c didn't work, and i ended up doing a kill -KILL.

I'm currently having a similar problem under current rawhide with
rpm-4.1-1.06hammer.2.i386.rpm.  I can't expunge any packages that have a
post-uninstall script.  rpm freezes and requires a kill -KILL.  The scripts are
left in /var/tmp.  I've tried db_recover and --rebuilddb, no luck.

Here's some more info, old gcc package left from previous rpm lockup:

# rpm -q gcc
gcc-3.2-10
gcc-3.2-7

# rpm -evvvv gcc-3.2-7
(I've attached the output of this)

At this point rpm is frozen and needs the -KILL
here is the script left in /var/tmp:

# cat /var/tmp/rpm-tmp.82425
set -x
if [ $1 = 0 ]; then
  /sbin/install-info --delete \
    --info-dir=/usr/share/info /usr/share/info/gcc.info.gz


This occurs with several packages, like bash for instance, that have
post-uninstall scripts.

Created attachment 80984 [details]
output from rpm -evvvv gcc-3.2-7 rpm lockup

I had a problem like this with rpm, and had to reboot to fix it. 

Reboot fixed the problem for me.  No idea why, lsof | grep rpm displayed nothing.

2nd strace is also a stale lock of unknown origing

These problems all smell (but I can't tell precisely)
of the missing SIGCHLD problem that is fixed in
rpm-4.1-9 packages at
	ftp://people.redhat.com/jbj/test-4.1
so I'm gonna close this report.

Just more info. I have not upgraded as suggested yet, but doing an rpm -U 
(I have installed/upgraded packages before this) yielded a hang and a 
strace shows:

[root@leia tmp]# strace -p 7002
select(0, NULL, NULL, NULL, {0, 470673}) = 0 (Timeout)
select(0, NULL, NULL, NULL, {1, 0})     = 0 (Timeout)
select(0, NULL, NULL, NULL, {1, 0})     = 0 (Timeout)
select(0, NULL, NULL, NULL, {1, 0})     = 0 (Timeout)
select(0, NULL, NULL, NULL, {1, 0})     = 0 (Timeout)
select(0, NULL, NULL, NULL, {1, 0})     = 0 (Timeout)
select(0, NULL, NULL, NULL, {1, 0})     = 0 (Timeout)
select(0, NULL, NULL, NULL, {1, 0})     = 0 (Timeout)
select(0, NULL, NULL, NULL, {1, 0})     = 0 (Timeout)
select(0, NULL, NULL, NULL, {1, 0} <unfinished ...>

ad nauseam....

I'll upgrade later and see what happens.

I have just installed RedHat 9.0 and rpm freezes occasionally again.