[krbdev.mit.edu #8890] git commit

[Greg Hudson via RT]

Thu Mar 26 00:24:27 2020: Request 8890 was acted upon.
 Transaction: Ticket created by ghudson at mit.edu
       Queue: krb5
     Subject: git commit
       Owner: ghudson at mit.edu
  Requestors: 
      Status: new
 Ticket <URL: https://krbdev.mit.edu/rt/Ticket/Display.html?id=8890 >



Add finalization safety check to com_err

If the linker erroneously runs the libkrb5 finalizer after the
libcom_err finalizer, the consequent remove_error_table() calls could
crash due to accessing a destroyed mutex or an invalid et_list
pointer.  Add an unsynchronized check on finalized in
remove_error_table(), and set et_list to null in com_err_terminate()
after destroying the list.

[ghudson at mit.edu: minimized code hanges; rewrote comment and commit
message]

https://github.com/krb5/krb5/commit/9d654aa05e26bbf22f140abde3436afeff2fdf8d
Author: Jiri Sasek <Jiri.Sasek at Oracle.COM>
Committer: Greg Hudson <ghudson at mit.edu>
Commit: 9d654aa05e26bbf22f140abde3436afeff2fdf8d
Branch: master
 src/util/et/error_message.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)