Even with only one available update pending, the changelog plugin uses all available memory and is then killed by the kernel:

-----------------------------------------------
$ zypper list-updates
v |  Update repository | ansible | 2.9.27-bp155.2.16 | 2.9.27-150000.1.17.2 | noarch

$ /usr/bin/time -v zypper changelog --update
'/usr/bin/zypper-changelog' was killed by signal 9 (Killed)
Command exited with non-zero status 137
        Command being timed: "zypper changelog --update"
        User time (seconds): 13.42
        System time (seconds): 1.82
        Percent of CPU this job got: 96%
        Elapsed (wall clock) time (h:mm:ss or m:ss): 0:15.84
        Average shared text size (kbytes): 0
        Average unshared data size (kbytes): 0
        Average stack size (kbytes): 0
        Average total size (kbytes): 0
        Maximum resident set size (kbytes): 3516412
        Average resident set size (kbytes): 0
        Major (requiring I/O) page faults: 583
        Minor (reclaiming a frame) page faults: 643267
        Voluntary context switches: 19144
        Involuntary context switches: 2383
        Swaps: 0
        File system inputs: 508840
        File system outputs: 256
        Socket messages sent: 0
        Socket messages received: 0
        Signals delivered: 0
        Page size (bytes): 4096
        Exit status: 137
-----------------------------------------------

That's 3.3 GB of memory here, a bit too much :)


$ rpm -q zypper-changelog-plugin zypper
zypper-changelog-plugin-0.3-150500.1.1.noarch
zypper-1.14.71-150400.3.45.2.x86_64