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NFS: Prevent integer overflow in nfs_scan_list()
Also ensure that nfs_inode ncommit and npages are large enough to represent all possible values for the number of pages. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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@ -425,6 +425,8 @@ int nfs_scan_list(struct nfs_inode *nfsi,
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req->wb_index, tag);
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nfs_list_add_request(req, dst);
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res++;
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if (res == INT_MAX)
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goto out;
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}
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}
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@ -158,7 +158,7 @@ struct nfs_inode {
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spinlock_t req_lock;
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struct radix_tree_root nfs_page_tree;
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unsigned int ncommit,
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unsigned long ncommit,
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npages;
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/* Open contexts for shared mmap writes */
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