4.0-2.7 changelog entry:
Fixed x86_64 backtrace code to recognize 32-bit user code kernel
entry exception frames (code segment selectors of 0x23) without
issuing a "bt: WARNING: possibly bogus exception frame" message.
Fixed x86_64 backtrace code to recognize in-kernel exception
frames generated from module text in situations where the module
data was not included in the dumpfile, such as in a netdump which
resulted in a vmcore-incomplete file.
(10/19/05)