hangs on packages libfm4 and libfm-extra4

[Jeffery Wilkins]

not really sure what the bug is exactly but what I tested was

# debsums libfm-extra4
/usr/lib/x86_64-linux-gnu/libfm-extra.so.4.0.3 OK

after this it just hangs with high cpu usage

# debsums libfm4
/usr/lib/x86_64-linux-gnu/libfm.so.4.0.3 OK
/usr/share/doc/libfm4/AUTHORS OK
/usr/share/doc/libfm4/NEWS.gz OK
/usr/share/doc/libfm4/README OK

after this it just hangs with high cpu usage

will try to reinstall these packages and reply back if the problem persists

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: debsums 2.1.2
ProcVersionSignature: Ubuntu 3.19.0-28.30~14.04.1-generic 3.19.8-ckt5
Uname: Linux 3.19.0-28-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.19.2-0ubuntu8
Architecture: amd64
Date: Thu Dec 3 11:53:14 2015
PackageArchitecture: all
SourcePackage: debsums
UpgradeStatus: No upgrade log present (probably fresh install)

[Jeffery Wilkins (djcanadianjeff)]

root@xubuntu:/tmp# apt-get install --reinstall libfm4 libfm-extra4
Reading package lists... Done
Building dependency tree
Reading state information... Done
Need to get 133 kB of archives.
After this operation, 0 B of additional disk space will be used.
Get:1 http://ca.archive.ubuntu.com/ubuntu/ xenial/universe libfm-extra4 amd64 1.2.3-0ubuntu1 [14.6 kB]
Get:2 http://ca.archive.ubuntu.com/ubuntu/ xenial/universe libfm4 amd64 1.2.3-0ubuntu1 [118 kB]
Fetched 133 kB in 0s (239 kB/s)
(Reading database ... 356823 files and directories currently installed.)
Preparing to unpack .../libfm-extra4_1.2.3-0ubuntu1_amd64.deb ...
Unpacking libfm-extra4 (1.2.3-0ubuntu1) over (1.2.3-0ubuntu1) ...
Preparing to unpack .../libfm4_1.2.3-0ubuntu1_amd64.deb ...
Unpacking libfm4 (1.2.3-0ubuntu1) over (1.2.3-0ubuntu1) ...
Setting up libfm-extra4 (1.2.3-0ubuntu1) ...
Setting up libfm4 (1.2.3-0ubuntu1) ...
Processing triggers for libc-bin (2.21-0ubuntu4) ...
root@xubuntu:/tmp# debsums libfm4
/usr/lib/x86_64-linux-gnu/libfm.so.4.0.3 OK
/usr/share/doc/libfm4/AUTHORS OK
/usr/share/doc/libfm4/NEWS.gz OK
/usr/share/doc/libfm4/README OK
/usr/share/doc/libfm4/changelog.Debian.gz OK
/usr/share/doc/libfm4/copyright OK
root@xubuntu:/tmp# debsums libfm-extra4
/usr/lib/x86_64-linux-gnu/libfm-extra.so.4.0.3 OK
/usr/share/doc/libfm-extra4/changelog.Debian.gz FAILED
/usr/share/doc/libfm-extra4/copyright OK
root@xubuntu:/tmp#

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Ryo Onodera (ryoqun)]

I've encountered with similar problem for the package libfuse2.

After some investigation, it seems that this is caused by an infinite loop inside resolve_path.

After this tiny hack, it finished to work:

```
ryoqun@miyako:~$ diff -u /usr/bin/debsums{?*,}
--- /usr/bin/debsums.backup 2016-10-26 13:12:30.157544031 +0900
+++ /usr/bin/debsums 2016-10-26 13:33:01.565480144 +0900
@@ -427,7 +427,9 @@
     my $path = shift;
     my @tokens = split(/\//, $path);
     my @parts = ();
- while (@tokens) {
+ my $loop_count = 0;
+ while (@tokens && $loop_count < 2000) {
+ $loop_count++;
         my $token = shift @tokens;
         next if $token eq '.' || $token eq '';
         if ($token eq '..') {
@@ -443,6 +445,9 @@
             push @parts, $token;
         }
     }
+ if ($loop_count >= 2000) {
+ warn "maybe infinite loop: $path ";
+ }
     return join('/', @parts);
 }

```

[Nate Eldredge (nate-thatsmathematics)]

I encountered this with libfl-dev. The cause is apparently a symlink loop:

lrwxrwxrwx 1 root root 27 Feb 28 2016 /usr/share/doc/libfl-dev/NEWS.Debian.gz -> ../libfl-dev/NEWS.Debian.gz

[Dominique Dumont (domi-dumont)]

I've uploaded a new package in Debian with a fix for this issue.

All the best

[Launchpad Janitor (janitor)]

This bug was fixed in the package debsums - 2.1.3

---------------
debsums (2.1.3) unstable; urgency=medium

  * Team upload.

  [ Axel Beckert ]
  * debian/README.source: Explain the new version numbering scheme, refers
    to Semantic Versioning (http://semver.org/).
  * Declare compliance with Debian Policy 3.9.8. (No changes needed.)
  * Bump debhelper compatibility to 9 as recommended.
    + Update versioned debhelper build-dependency accordingly.

  [ Salvatore Bonaccorso ]
  * debian/control: Use HTTPS transport protocol for Vcs-Git URI

  [ gregor herrmann ]
  * debian/copyright: change Copyright-Format 1.0 URL to HTTPS.
  * Remove Ryan Niebur from Uploaders. Thanks for your work!

  [ Dominique Dumont ]
  * protect against symlink loop (Closes: #822633) (LP: #1522563)

 -- Dominique Dumont <email address hidden> Tue, 15 Nov 2016 07:52:19 +0100

[Ryo Onodera (ryoqun)]

Thanks for fixing this!!!

So, when is this released to xenial??