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| author | Trond Myklebust <trond.myklebust@primarydata.com> | 2017-08-01 16:02:47 -0400 |
|---|---|---|
| committer | Anna Schumaker <Anna.Schumaker@Netapp.com> | 2017-08-01 16:28:55 -0400 |
| commit | fd40559c8657418385e42f797e0b04bfc0add748 (patch) | |
| tree | 2e90e12a96fc87b33c34be6082bf42be81322154 /fs/nfs/nfs4xdr.c | |
| parent | b7dbcc0e433f0f61acb89ed9861ec996be4f2b38 (diff) | |
| download | linux-fd40559c8657418385e42f797e0b04bfc0add748.tar.gz linux-fd40559c8657418385e42f797e0b04bfc0add748.tar.bz2 linux-fd40559c8657418385e42f797e0b04bfc0add748.zip | |
NFSv4: Fix EXCHANGE_ID corrupt verifier issue
The verifier is allocated on the stack, but the EXCHANGE_ID RPC call was
changed to be asynchronous by commit 8d89bd70bc939. If we interrrupt
the call to rpc_wait_for_completion_task(), we can therefore end up
transmitting random stack contents in lieu of the verifier.
Fixes: 8d89bd70bc939 ("NFS setup async exchange_id")
Cc: stable@vger.kernel.org # v4.9+
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'fs/nfs/nfs4xdr.c')
| -rw-r--r-- | fs/nfs/nfs4xdr.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c index fa3eb361d4f8..37c8af003275 100644 --- a/fs/nfs/nfs4xdr.c +++ b/fs/nfs/nfs4xdr.c @@ -1785,7 +1785,7 @@ static void encode_exchange_id(struct xdr_stream *xdr, int len = 0; encode_op_hdr(xdr, OP_EXCHANGE_ID, decode_exchange_id_maxsz, hdr); - encode_nfs4_verifier(xdr, args->verifier); + encode_nfs4_verifier(xdr, &args->verifier); encode_string(xdr, strlen(args->client->cl_owner_id), args->client->cl_owner_id); |