D59660.1794000791.diff
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D59660.1794000791.diff
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	diff --git a/sys/compat/linuxkpi/common/include/linux/string.h b/sys/compat/linuxkpi/common/include/linux/string.h
	--- a/sys/compat/linuxkpi/common/include/linux/string.h
	+++ b/sys/compat/linuxkpi/common/include/linux/string.h
	@@ -100,6 +100,33 @@
	return (memdup_user(src, len));
	}

	+static inline void *
	+vmemdup_user(const void *ptr, size_t len)
	+{
	+ void *retval;
	+
	+ retval = malloc(len, M_KMALLOC, M_WAITOK);
	+ if (retval == NULL)
	+ return (ERR_PTR(-ENOMEM));
	+
	+ if (linux_copyin(ptr, retval, len)) {
	+ free(retval, M_KMALLOC);
	+ return (ERR_PTR(-EFAULT));
	+ }
	+ return (retval);
	+}
	+
	+static inline void *
	+vmemdup_array_user(const void *src, size_t n, size_t size)
	+{
	+ size_t len;
	+
	+ if (check_mul_overflow(n, size, &len))
	+ return (ERR_PTR(-EOVERFLOW));
	+
	+ return (vmemdup_user(src, len));
	+}
	+
	static inline void *
	kmemdup(const void *src, size_t len, gfp_t gfp)
	{