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nfsd: rpc_peeraddr2str needs rcu lock

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I'm not even sure cl_xprt can change here, but we're getting "suspicious
RCU usage" warnings, and other rpc_peeraddr2str callers are taking the
rcu lock.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
J. Bruce Fields 2021-06-14 11:20:49 -04:00
parent f6260b98ec
commit 05570a2b01
1 changed files with 2 additions and 0 deletions
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2
fs/nfsd/nfs4callback.c
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@ -939,8 +939,10 @@ static int setup_callback_client(struct nfs4_client *clp, struct nfs4_cb_conn *c
}
clp->cl_cb_client = client;
clp->cl_cb_cred = cred;
rcu_read_lock();
trace_nfsd_cb_setup(clp, rpc_peeraddr2str(client, RPC_DISPLAY_NETID),
args.authflavor);
rcu_read_unlock();
return 0;
}