diff options
| author | Scott Mayhew <smayhew@redhat.com> | 2019-11-12 14:01:43 -0500 |
|---|---|---|
| committer | J. Bruce Fields <bfields@redhat.com> | 2019-11-12 14:53:26 -0500 |
| commit | 18b9a895e652979b70f9c20565394a69354dfebc (patch) | |
| tree | bc677d5c2cae88f3e3206cfd84400537b9a20612 /fs/nfsd | |
| parent | fb7dd0a1ba8690527c2394c6c55f909aa87d8f44 (diff) | |
| download | linux-18b9a895e652979b70f9c20565394a69354dfebc.tar.bz2 | |
nfsd: Fix cld_net->cn_tfm initialization
Don't assign an error pointer to cld_net->cn_tfm, otherwise an oops will
occur in nfsd4_remove_cld_pipe().
Also, move the initialization of cld_net->cn_tfm so that it occurs after
the check to see if nfsdcld is running. This is necessary because
nfsd4_client_tracking_init() looks for -ETIMEDOUT to determine whether
to use the "old" nfsdcld tracking ops.
Fixes: 6ee95d1c8991 ("nfsd: add support for upcall version 2")
Reported-by: Jamie Heilman <jamie@audible.transient.net>
Signed-off-by: Scott Mayhew <smayhew@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd')
| -rw-r--r-- | fs/nfsd/nfs4recover.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/fs/nfsd/nfs4recover.c b/fs/nfsd/nfs4recover.c index 29dff4c6e752..2481e7662128 100644 --- a/fs/nfsd/nfs4recover.c +++ b/fs/nfsd/nfs4recover.c @@ -1578,6 +1578,7 @@ nfsd4_cld_tracking_init(struct net *net) struct nfsd_net *nn = net_generic(net, nfsd_net_id); bool running; int retries = 10; + struct crypto_shash *tfm; status = nfs4_cld_state_init(net); if (status) @@ -1586,11 +1587,6 @@ nfsd4_cld_tracking_init(struct net *net) status = __nfsd4_init_cld_pipe(net); if (status) goto err_shutdown; - nn->cld_net->cn_tfm = crypto_alloc_shash("sha256", 0, 0); - if (IS_ERR(nn->cld_net->cn_tfm)) { - status = PTR_ERR(nn->cld_net->cn_tfm); - goto err_remove; - } /* * rpc pipe upcalls take 30 seconds to time out, so we don't want to @@ -1607,6 +1603,12 @@ nfsd4_cld_tracking_init(struct net *net) status = -ETIMEDOUT; goto err_remove; } + tfm = crypto_alloc_shash("sha256", 0, 0); + if (IS_ERR(tfm)) { + status = PTR_ERR(tfm); + goto err_remove; + } + nn->cld_net->cn_tfm = tfm; status = nfsd4_cld_get_version(nn); if (status == -EOPNOTSUPP) |