vmcore-dmesg fails to extract the kernel ring buffer (dmesg)
Issue
- Unable to extract the kernel ring buffer (dmesg) from the kernel crash dump (vmcore) using
vmcore-dmesgcommand. - The
vmcore-dmesgcommand fails with the message'Missing elf signature'
# crash --osrelease vmcore
4.18.0-32.el8.x86_64
# vmcore-dmesg vmcore
Missing elf signature
# echo $?
4
Environment
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- kexec-tools
Subscriber exclusive content
A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.
