Back in the day when developers were allowed to demonstrate a sense of humor, they added the following to the Oracle 7 documentation when looking up “Oracle’s Dirty Reads….”. I don’t think management wiil allow this type of sense of humor anymore. Many thanks to Ric VanDyke who still has the documentation manuals (Yes real paper)….
Recently our staff tried to add disk strings to ASM diskgroups and the strings exceeded 1024 characters. We are on a oracle 184.108.40.206 on redhat linux. In the Docs, it says it should hold up to 4K, but when we added to the asm_diskstrings we got the following error and the ASM DB wouldn’t startup causing our production db to be down:
ORA-0600: [kslwt_validate_gwaitctx: magic], 
We looked many places (Including Metalink and Communities) and couldn’t find a ora-0600 error but did find a ora-7445 with the same code/error.
We opened a ticket and was notified that there is a bug with this error and a patch to fix it.
We were hitting Bug 18273830 where when the asm_diskstring becomes larger than 1024 characters it causes this failure. There is a one-off Patch available on My Oracle Support and 220.127.116.11 which will resolve this problem
Release Oracle 18.104.22.168.0
Platform Linux x86-64
Hope this helps, as there isn’t much documentation on this bug/error.