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authorBenjamin Coddington <bcodding@redhat.com>2017-09-22 07:57:10 -0400
committerTrond Myklebust <trond.myklebust@primarydata.com>2017-10-01 18:51:30 -0400
commit68ebf8fe3bce8c167cf83fbd681c1eb1ed419c6c (patch)
treea072af2954f775be39270f672ad956d0d0b35444 /fs
parentcdb2e53fd6dc715c5b45d0967fcb6dc574cb28f8 (diff)
downloadlinux-68ebf8fe3bce8c167cf83fbd681c1eb1ed419c6c.tar.bz2
NFS: Fix uninitialized rpc_wait_queue
Michael Sterrett reports a NULL pointer dereference on NFSv3 mounts when CONFIG_NFS_V4 is not set because the NFS UOC rpc_wait_queue has not been initialized. Move the initialization of the queue out of the CONFIG_NFS_V4 conditional setion. Fixes: 7d6ddf88c4db ("NFS: Add an iocounter wait function for async RPC tasks") Cc: stable@vger.kernel.org # 4.11+ Signed-off-by: Benjamin Coddington <bcodding@redhat.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/nfs/client.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index efebe6cf4378..22880ef6d8dd 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -218,7 +218,6 @@ static void nfs_cb_idr_remove_locked(struct nfs_client *clp)
static void pnfs_init_server(struct nfs_server *server)
{
rpc_init_wait_queue(&server->roc_rpcwaitq, "pNFS ROC");
- rpc_init_wait_queue(&server->uoc_rpcwaitq, "NFS UOC");
}
#else
@@ -888,6 +887,7 @@ struct nfs_server *nfs_alloc_server(void)
ida_init(&server->openowner_id);
ida_init(&server->lockowner_id);
pnfs_init_server(server);
+ rpc_init_wait_queue(&server->uoc_rpcwaitq, "NFS UOC");
return server;
}