OpenAFS Master Repository branch, master, updated. openafs-devel-1_9_1-84-g02c3d56

[Gerrit Code Review]

The following commit has been merged in the master branch:
commit 02c3d56956dc4c94a9076b6d7eb56d26534faa9c
Author: Andrew Deason <adeason@dson.org>
Date:   Mon Apr 27 13:28:33 2020 -0500

    afs: Avoid touching CBRs after free
    
    Currently, we free our CBR structures in shutdown_vcache, but later on
    in shutdown_server, we call afs_FreeCBR on each one that's attached to
    a struct server. afs_FreeCBR doesn't actually free the memory; it just
    modifies some pointers to put the CBR on the free list. Since we do
    this after the underlying memory has been freed, it can cause a panic
    during shutdown since the structures are no longer valid.
    
    To avoid this, make the afs_FreeCBR calls inside shutdown_vcache,
    right before the memory is freed.
    
    Change-Id: I142126d6aa811762b6c234d05abdac3764dad887
    Reviewed-on: https://gerrit.openafs.org/14165
    Reviewed-by: Michael Meffie <mmeffie@sinenomine.net>
    Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
    Tested-by: BuildBot <buildbot@rampaginggeek.com>

 src/afs/afs_init.c   |  8 --------
 src/afs/afs_vcache.c | 17 +++++++++++++++++
 2 files changed, 17 insertions(+), 8 deletions(-)

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