[Bug 1828455] New: depmod running for a long time when installing F33 kernel

https://bugzilla.redhat.com/show_bug.cgi?id=1828455

Bug ID: 1828455
           Summary: depmod running for a long time when installing F33
                    kernel
           Product: Fedora
           Version: 31
            Status: NEW
         Component: kmod
          Assignee: [e-mail]
          Reporter: [e-mail]
        QA Contact: [e-mail]
                CC: [e-mail],
                    [e-mail],
                    [e-mail], [e-mail]
  Target Milestone: ---
    Classification: Fedora

Description of problem:

In an F31 VM, when installing an F33 kernel, depmod runs for a very long time
and consumes nearly 100% CPU.

Version-Release number of selected component (if applicable):

kmod-26-4.fc31.x86_64
kernel-0:5.7.0-0.rc2.20200422git18bf34080c4c.1.fc33.x86_64

How reproducible:
Tested once.

Steps to Reproduce:

# dnf update --nogpg kernel-0:5.7.0-0.rc2.20200422git18bf34080c4c.1.fc33.x86_64
--releasever=33

Actual results:

Top shows CPU usage by depmod approaching 100% at times:

$ top -bc -n 1 -u root | head -9
top - 10:31:33 up 28 min,  1 user,  load average: 1.20, 1.11, 0.99
Tasks: 186 total,   2 running, 184 sleeping,   0 stopped,   0 zombie
%Cpu(s): 94.1 us,  5.9 sy,  0.0 ni,  0.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
MiB Mem :   3928.0 total,   2000.5 free,    734.9 used,   1192.6 buff/cache
MiB Swap:    512.0 total,    512.0 free,      0.0 used.   2942.6 avail Mem

PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND
  38906 root      20   0   41960  39528   4220 R  81.2   1.0   0:03.82
/sbin/depmod -C /tmp/weak-modules.Os10HS/depmod.conf +
      1 root      20   0  172764  16432   9752 S   0.0   0.4   0:02.78
/usr/lib/systemd/systemd --switched-root --system --d+

Expected results:

Kernel install completes in a normal time.

Additional info:

This bug appears to be reporting the same issue:

Bug 1825940 - kernel-core-5.7.0-0.rc1.20200416git9786cab67457.1 took very long
time to install