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NFS: alloc_nfs_open_context() must use the file cred when available 

[ Upstream commit 1d179d6bd6 ]

If we're creating a nfs_open_context() for a specific file pointer,
we must use the cred assigned to that file.

Fixes: a52458b48a ("NFS/NFSD/SUNRPC: replace generic creds with 'struct cred'.")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5.4-rM2-2.2.x-imx-squashed
Trond Myklebust 2020-02-07 19:32:49 -05:00 committed by Greg Kroah-Hartman
parent 66bfacd0f3
commit 07cd4e8f74
1 changed files with 5 additions and 5 deletions
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10
fs/nfs/inode.c
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@ -959,16 +959,16 @@ struct nfs_open_context *alloc_nfs_open_context(struct dentry *dentry,
struct file *filp)
{
struct nfs_open_context *ctx;
const struct cred *cred = get_current_cred();
ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
if (!ctx) {
put_cred(cred);
if (!ctx)
return ERR_PTR(-ENOMEM);
}
nfs_sb_active(dentry->d_sb);
ctx->dentry = dget(dentry);
ctx->cred = cred;
if (filp)
ctx->cred = get_cred(filp->f_cred);
else
ctx->cred = get_current_cred();
ctx->ll_cred = NULL;
ctx->state = NULL;
ctx->mode = f_mode;