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authorTrond Myklebust <trond.myklebust@primarydata.com>2014-02-01 14:53:23 -0500
committerTrond Myklebust <trond.myklebust@primarydata.com>2014-02-01 15:13:39 -0500
commit17ead6c85c3d0ef57a14d1373f1f1cee2ce60ea8 (patch)
tree36fc04d5578037acf69efda944b4e8dd2ff5a0df /fs/nfs
parent8a1f006ad302ea178aefb1f8c67e679c696289e9 (diff)
NFSv4: Fix memory corruption in nfs4_proc_open_confirm
nfs41_wake_and_assign_slot() relies on the task->tk_msg.rpc_argp and task->tk_msg.rpc_resp always pointing to the session sequence arguments. nfs4_proc_open_confirm tries to pull a fast one by reusing the open sequence structure, thus causing corruption of the NFSv4 slot table. Cc: stable@vger.kernel.org # 3.12+ Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/nfs4proc.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 42da6af7758..2da6a698b8f 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -1620,15 +1620,15 @@ static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata)
{
struct nfs4_opendata *data = calldata;
- nfs40_setup_sequence(data->o_arg.server, &data->o_arg.seq_args,
- &data->o_res.seq_res, task);
+ nfs40_setup_sequence(data->o_arg.server, &data->c_arg.seq_args,
+ &data->c_res.seq_res, task);
}
static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata)
{
struct nfs4_opendata *data = calldata;
- nfs40_sequence_done(task, &data->o_res.seq_res);
+ nfs40_sequence_done(task, &data->c_res.seq_res);
data->rpc_status = task->tk_status;
if (data->rpc_status == 0) {
@@ -1686,7 +1686,7 @@ static int _nfs4_proc_open_confirm(struct nfs4_opendata *data)
};
int status;
- nfs4_init_sequence(&data->o_arg.seq_args, &data->o_res.seq_res, 1);
+ nfs4_init_sequence(&data->c_arg.seq_args, &data->c_res.seq_res, 1);
kref_get(&data->kref);
data->rpc_done = 0;
data->rpc_status = 0;