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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 /include/linux/nfs_xdr.h | |
| parent | b7dbcc0e433f0f61acb89ed9861ec996be4f2b38 (diff) | |
| download | lwn-fd40559c8657418385e42f797e0b04bfc0add748.tar.gz lwn-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 'include/linux/nfs_xdr.h')
| -rw-r--r-- | include/linux/nfs_xdr.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h index ca3bcc4ed4e5..62cbcb842f99 100644 --- a/include/linux/nfs_xdr.h +++ b/include/linux/nfs_xdr.h @@ -1235,7 +1235,7 @@ struct nfs41_state_protection { struct nfs41_exchange_id_args { struct nfs_client *client; - nfs4_verifier *verifier; + nfs4_verifier verifier; u32 flags; struct nfs41_state_protection state_protect; }; |