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

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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>
This commit is contained in:
Trond Myklebust 2020-02-07 19:32:49 -05:00
parent 244fcd2f9a
commit 1d179d6bd6
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 file *filp)
{ {
struct nfs_open_context *ctx; struct nfs_open_context *ctx;
const struct cred *cred = get_current_cred();
ctx = kmalloc(sizeof(*ctx), GFP_KERNEL); ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
if (!ctx) { if (!ctx)
put_cred(cred);
return ERR_PTR(-ENOMEM); return ERR_PTR(-ENOMEM);
}
nfs_sb_active(dentry->d_sb); nfs_sb_active(dentry->d_sb);
ctx->dentry = dget(dentry); 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->ll_cred = NULL;
ctx->state = NULL; ctx->state = NULL;
ctx->mode = f_mode; ctx->mode = f_mode;