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NFSD: Remove BUG_ON in nfsd4_process_cb_update()

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Don't kill the kworker thread, and don't panic while cl_lock is
held. There's no need for scorching the earth here.

Reviewed-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2024-01-26 12:46:26 -05:00
parent 112bdd597d
commit 84ebf02d75
1 changed files with 2 additions and 1 deletions
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3
fs/nfsd/nfs4callback.c
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@ -1370,8 +1370,9 @@ static void nfsd4_process_cb_update(struct nfsd4_callback *cb)
* Only serialized callback code is allowed to clear these
* flags; main nfsd code can only set them:
*/
BUG_ON(!(clp->cl_flags & NFSD4_CLIENT_CB_FLAG_MASK));
WARN_ON(!(clp->cl_flags & NFSD4_CLIENT_CB_FLAG_MASK));
clear_bit(NFSD4_CLIENT_CB_UPDATE, &clp->cl_flags);
memcpy(&conn, &cb->cb_clp->cl_cb_conn, sizeof(struct nfs4_cb_conn));
c = __nfsd4_find_backchannel(clp);
if (c) {