Differential D21232 Diff 60683 stable/12/sys/fs/nandfs/nandfs_dat.c

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	int			int
	nandfs_get_dat_bdescs_ioctl(struct nandfs_device *nffsdev,			nandfs_get_dat_bdescs_ioctl(struct nandfs_device *nffsdev,
	struct nandfs_argv *nargv)			struct nandfs_argv *nargv)
	{			{
	struct nandfs_bdesc *bd;			struct nandfs_bdesc *bd;
	size_t size;			size_t size;
	int error;			int error;

				if (nargv->nv_nmembs >= SIZE_MAX / sizeof(struct nandfs_bdesc))
				return (EINVAL);

	size = nargv->nv_nmembs * sizeof(struct nandfs_bdesc);			size = nargv->nv_nmembs * sizeof(struct nandfs_bdesc);
	bd = malloc(size, M_NANDFSTEMP, M_WAITOK);			bd = malloc(size, M_NANDFSTEMP, M_WAITOK);
	error = copyin((void *)(uintptr_t)nargv->nv_base, bd, size);			error = copyin((void *)(uintptr_t)nargv->nv_base, bd, size);
	if (error) {			if (error) {
	free(bd, M_NANDFSTEMP);			free(bd, M_NANDFSTEMP);
	return (error);			return (error);
	}			}

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