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NFSv4: pnfs_roc() must use cred_fscmp() to compare creds

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commit 3871224787 upstream.

When comparing two 'struct cred' for equality w.r.t. behaviour under
filesystem access, we need to use cred_fscmp().

Fixes: a52458b48a ("NFS/NFSD/SUNRPC: replace generic creds with 'struct cred'.")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Trond Myklebust
2020-01-26 17:31:13 -05:00
committed by Greg Kroah-Hartman
parent 86065de0eb
commit 5d0a6d77b6
1 changed files with 1 additions and 1 deletions
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2
fs/nfs/pnfs.c
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@@ -1425,7 +1425,7 @@ retry:
/* lo ref dropped in pnfs_roc_release() */
layoutreturn = pnfs_prepare_layoutreturn(lo, &stateid, &iomode);
/* If the creds don't match, we can't compound the layoutreturn */
if (!layoutreturn || cred != lo->plh_lc_cred)
if (!layoutreturn || cred_fscmp(cred, lo->plh_lc_cred) != 0)
goto out_noroc;
roc = layoutreturn;