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    Subject[PATCH 20/30] NFS: Fix error handling [try #11]
    Date
    Fix an error handling problem: nfs_put_client() can be given a NULL pointer if
    nfs_free_server() is asked to destroy a partially initialised record.

    Signed-Off-By: David Howells <dhowells@redhat.com>
    ---

    fs/nfs/client.c | 3 +++
    1 files changed, 3 insertions(+), 0 deletions(-)

    diff --git a/fs/nfs/client.c b/fs/nfs/client.c
    index 27f6478..700bd58 100644
    --- a/fs/nfs/client.c
    +++ b/fs/nfs/client.c
    @@ -208,6 +208,9 @@ #endif
    */
    void nfs_put_client(struct nfs_client *clp)
    {
    + if (!clp)
    + return;
    +
    dprintk("--> nfs_put_client({%d})\n", atomic_read(&clp->cl_count));

    if (atomic_dec_and_lock(&clp->cl_count, &nfs_client_lock)) {
    -
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