NFSv4.1: protect destroying and nullifying bc_serv structure

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When we are shutting down the client, we free the callback
server structure and then at a later pointer we free the
transport used by the client. Yet, it's possible that after
the callback server is freed, the transport receives a
backchannel request at which point we can dereferene freed
memory. Instead, do the freeing the bc server and nullying
bc_serv under the lock.

Signed-off-by: Olga Kornievskaia <okorniev@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>

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Olga Kornievskaia 2025-11-04 17:29:27 -05:00 • committed by Trond Myklebust

parent 6f8b26c90a

commit 9e9fdd0ad0

1 changed files with 1 additions and 1 deletions

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fs/nfs/callback.c

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