The fix has been merged by Linus
   commit 52bf9f6c09fca8c74388cd41cc24e5d1bff812a9
   Author: David Howells <dhowells@redhat.com>
   Date:   Mon Dec 11 21:43:52 2023 +0000
        afs: Fix refcount underflow from error handling race
   Fixes: 34fa47612bfe ("afs: Fix race in async call refcounting")
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