diff --git a/sysroot-patches/glibc-2.17-add-userfaultfd.patch b/sysroot-patches/glibc-2.17-add-userfaultfd.patch
new file mode 100644
index 0000000..fb3a19a
--- /dev/null
+++ b/sysroot-patches/glibc-2.17-add-userfaultfd.patch
@@ -0,0 +1,147 @@
+diff --git a/sysroot/usr/include/linux/userfaultfd.h b/sysroot/usr/include/linux/userfaultfd.h
+new file mode 100644
+index 0000000..ca7b7a5
+--- /dev/null
++++ b/sysroot/usr/include/linux/userfaultfd.h
+@@ -0,0 +1,141 @@
++/****************************************************************************
++ ****************************************************************************
++ ***
++ ***   This header was automatically generated from a Linux kernel header
++ ***   of the same name, to make information necessary for userspace to
++ ***   call into the kernel available to libc.  It contains only constants,
++ ***   structures, and macros generated from the original header, and thus,
++ ***   contains no copyrightable information.
++ ***
++ ***   To edit the content of this header, modify the corresponding
++ ***   source file (e.g. under external/kernel-headers/original/) then
++ ***   run bionic/libc/kernel/tools/update_all.py
++ ***
++ ***   Any manual change here will be lost the next time this script will
++ ***   be run. You've been warned!
++ ***
++ ****************************************************************************
++ ****************************************************************************/
++#ifndef _LINUX_USERFAULTFD_H
++#define _LINUX_USERFAULTFD_H
++#include <linux/types.h>
++#define UFFD_API ((__u64) 0xAA)
++#define UFFD_API_REGISTER_MODES (UFFDIO_REGISTER_MODE_MISSING | UFFDIO_REGISTER_MODE_WP | UFFDIO_REGISTER_MODE_MINOR)
++#define UFFD_API_FEATURES (UFFD_FEATURE_PAGEFAULT_FLAG_WP | UFFD_FEATURE_EVENT_FORK | UFFD_FEATURE_EVENT_REMAP | UFFD_FEATURE_EVENT_REMOVE | UFFD_FEATURE_EVENT_UNMAP | UFFD_FEATURE_MISSING_HUGETLBFS | UFFD_FEATURE_MISSING_SHMEM | UFFD_FEATURE_SIGBUS | UFFD_FEATURE_THREAD_ID | UFFD_FEATURE_MINOR_HUGETLBFS | UFFD_FEATURE_MINOR_SHMEM)
++#define UFFD_API_IOCTLS ((__u64) 1 << _UFFDIO_REGISTER | (__u64) 1 << _UFFDIO_UNREGISTER | (__u64) 1 << _UFFDIO_API)
++#define UFFD_API_RANGE_IOCTLS ((__u64) 1 << _UFFDIO_WAKE | (__u64) 1 << _UFFDIO_COPY | (__u64) 1 << _UFFDIO_ZEROPAGE | (__u64) 1 << _UFFDIO_WRITEPROTECT | (__u64) 1 << _UFFDIO_CONTINUE)
++#define UFFD_API_RANGE_IOCTLS_BASIC ((__u64) 1 << _UFFDIO_WAKE | (__u64) 1 << _UFFDIO_COPY | (__u64) 1 << _UFFDIO_CONTINUE)
++#define _UFFDIO_REGISTER (0x00)
++#define _UFFDIO_UNREGISTER (0x01)
++#define _UFFDIO_WAKE (0x02)
++#define _UFFDIO_COPY (0x03)
++#define _UFFDIO_ZEROPAGE (0x04)
++#define _UFFDIO_WRITEPROTECT (0x06)
++#define _UFFDIO_CONTINUE (0x07)
++#define _UFFDIO_API (0x3F)
++#define UFFDIO 0xAA
++#define UFFDIO_API _IOWR(UFFDIO, _UFFDIO_API, struct uffdio_api)
++#define UFFDIO_REGISTER _IOWR(UFFDIO, _UFFDIO_REGISTER, struct uffdio_register)
++#define UFFDIO_UNREGISTER _IOR(UFFDIO, _UFFDIO_UNREGISTER, struct uffdio_range)
++#define UFFDIO_WAKE _IOR(UFFDIO, _UFFDIO_WAKE, struct uffdio_range)
++#define UFFDIO_COPY _IOWR(UFFDIO, _UFFDIO_COPY, struct uffdio_copy)
++#define UFFDIO_ZEROPAGE _IOWR(UFFDIO, _UFFDIO_ZEROPAGE, struct uffdio_zeropage)
++#define UFFDIO_WRITEPROTECT _IOWR(UFFDIO, _UFFDIO_WRITEPROTECT, struct uffdio_writeprotect)
++#define UFFDIO_CONTINUE _IOWR(UFFDIO, _UFFDIO_CONTINUE, struct uffdio_continue)
++struct uffd_msg {
++  __u8 event;
++  __u8 reserved1;
++  __u16 reserved2;
++  __u32 reserved3;
++  union {
++    struct {
++      __u64 flags;
++      __u64 address;
++      union {
++        __u32 ptid;
++      } feat;
++    } pagefault;
++    struct {
++      __u32 ufd;
++    } fork;
++    struct {
++      __u64 from;
++      __u64 to;
++      __u64 len;
++    } remap;
++    struct {
++      __u64 start;
++      __u64 end;
++    } remove;
++    struct {
++      __u64 reserved1;
++      __u64 reserved2;
++      __u64 reserved3;
++    } reserved;
++  } arg;
++} __packed;
++#define UFFD_EVENT_PAGEFAULT 0x12
++#define UFFD_EVENT_FORK 0x13
++#define UFFD_EVENT_REMAP 0x14
++#define UFFD_EVENT_REMOVE 0x15
++#define UFFD_EVENT_UNMAP 0x16
++#define UFFD_PAGEFAULT_FLAG_WRITE (1 << 0)
++#define UFFD_PAGEFAULT_FLAG_WP (1 << 1)
++#define UFFD_PAGEFAULT_FLAG_MINOR (1 << 2)
++struct uffdio_api {
++  __u64 api;
++#define UFFD_FEATURE_PAGEFAULT_FLAG_WP (1 << 0)
++#define UFFD_FEATURE_EVENT_FORK (1 << 1)
++#define UFFD_FEATURE_EVENT_REMAP (1 << 2)
++#define UFFD_FEATURE_EVENT_REMOVE (1 << 3)
++#define UFFD_FEATURE_MISSING_HUGETLBFS (1 << 4)
++#define UFFD_FEATURE_MISSING_SHMEM (1 << 5)
++#define UFFD_FEATURE_EVENT_UNMAP (1 << 6)
++#define UFFD_FEATURE_SIGBUS (1 << 7)
++#define UFFD_FEATURE_THREAD_ID (1 << 8)
++#define UFFD_FEATURE_MINOR_HUGETLBFS (1 << 9)
++#define UFFD_FEATURE_MINOR_SHMEM (1 << 10)
++  __u64 features;
++  __u64 ioctls;
++};
++struct uffdio_range {
++  __u64 start;
++  __u64 len;
++};
++struct uffdio_register {
++  struct uffdio_range range;
++#define UFFDIO_REGISTER_MODE_MISSING ((__u64) 1 << 0)
++#define UFFDIO_REGISTER_MODE_WP ((__u64) 1 << 1)
++#define UFFDIO_REGISTER_MODE_MINOR ((__u64) 1 << 2)
++  __u64 mode;
++  __u64 ioctls;
++};
++struct uffdio_copy {
++  __u64 dst;
++  __u64 src;
++  __u64 len;
++#define UFFDIO_COPY_MODE_DONTWAKE ((__u64) 1 << 0)
++#define UFFDIO_COPY_MODE_WP ((__u64) 1 << 1)
++  __u64 mode;
++  __s64 copy;
++};
++struct uffdio_zeropage {
++  struct uffdio_range range;
++#define UFFDIO_ZEROPAGE_MODE_DONTWAKE ((__u64) 1 << 0)
++  __u64 mode;
++  __s64 zeropage;
++};
++struct uffdio_writeprotect {
++  struct uffdio_range range;
++#define UFFDIO_WRITEPROTECT_MODE_WP ((__u64) 1 << 0)
++#define UFFDIO_WRITEPROTECT_MODE_DONTWAKE ((__u64) 1 << 1)
++  __u64 mode;
++};
++struct uffdio_continue {
++  struct uffdio_range range;
++#define UFFDIO_CONTINUE_MODE_DONTWAKE ((__u64) 1 << 0)
++  __u64 mode;
++  __s64 mapped;
++};
++#define UFFD_USER_MODE_ONLY 1
++#endif
diff --git a/sysroot/usr/include/linux/userfaultfd.h b/sysroot/usr/include/linux/userfaultfd.h
new file mode 100644
index 0000000..ca7b7a5
--- /dev/null
+++ b/sysroot/usr/include/linux/userfaultfd.h
@@ -0,0 +1,141 @@
+/****************************************************************************
+ ****************************************************************************
+ ***
+ ***   This header was automatically generated from a Linux kernel header
+ ***   of the same name, to make information necessary for userspace to
+ ***   call into the kernel available to libc.  It contains only constants,
+ ***   structures, and macros generated from the original header, and thus,
+ ***   contains no copyrightable information.
+ ***
+ ***   To edit the content of this header, modify the corresponding
+ ***   source file (e.g. under external/kernel-headers/original/) then
+ ***   run bionic/libc/kernel/tools/update_all.py
+ ***
+ ***   Any manual change here will be lost the next time this script will
+ ***   be run. You've been warned!
+ ***
+ ****************************************************************************
+ ****************************************************************************/
+#ifndef _LINUX_USERFAULTFD_H
+#define _LINUX_USERFAULTFD_H
+#include <linux/types.h>
+#define UFFD_API ((__u64) 0xAA)
+#define UFFD_API_REGISTER_MODES (UFFDIO_REGISTER_MODE_MISSING | UFFDIO_REGISTER_MODE_WP | UFFDIO_REGISTER_MODE_MINOR)
+#define UFFD_API_FEATURES (UFFD_FEATURE_PAGEFAULT_FLAG_WP | UFFD_FEATURE_EVENT_FORK | UFFD_FEATURE_EVENT_REMAP | UFFD_FEATURE_EVENT_REMOVE | UFFD_FEATURE_EVENT_UNMAP | UFFD_FEATURE_MISSING_HUGETLBFS | UFFD_FEATURE_MISSING_SHMEM | UFFD_FEATURE_SIGBUS | UFFD_FEATURE_THREAD_ID | UFFD_FEATURE_MINOR_HUGETLBFS | UFFD_FEATURE_MINOR_SHMEM)
+#define UFFD_API_IOCTLS ((__u64) 1 << _UFFDIO_REGISTER | (__u64) 1 << _UFFDIO_UNREGISTER | (__u64) 1 << _UFFDIO_API)
+#define UFFD_API_RANGE_IOCTLS ((__u64) 1 << _UFFDIO_WAKE | (__u64) 1 << _UFFDIO_COPY | (__u64) 1 << _UFFDIO_ZEROPAGE | (__u64) 1 << _UFFDIO_WRITEPROTECT | (__u64) 1 << _UFFDIO_CONTINUE)
+#define UFFD_API_RANGE_IOCTLS_BASIC ((__u64) 1 << _UFFDIO_WAKE | (__u64) 1 << _UFFDIO_COPY | (__u64) 1 << _UFFDIO_CONTINUE)
+#define _UFFDIO_REGISTER (0x00)
+#define _UFFDIO_UNREGISTER (0x01)
+#define _UFFDIO_WAKE (0x02)
+#define _UFFDIO_COPY (0x03)
+#define _UFFDIO_ZEROPAGE (0x04)
+#define _UFFDIO_WRITEPROTECT (0x06)
+#define _UFFDIO_CONTINUE (0x07)
+#define _UFFDIO_API (0x3F)
+#define UFFDIO 0xAA
+#define UFFDIO_API _IOWR(UFFDIO, _UFFDIO_API, struct uffdio_api)
+#define UFFDIO_REGISTER _IOWR(UFFDIO, _UFFDIO_REGISTER, struct uffdio_register)
+#define UFFDIO_UNREGISTER _IOR(UFFDIO, _UFFDIO_UNREGISTER, struct uffdio_range)
+#define UFFDIO_WAKE _IOR(UFFDIO, _UFFDIO_WAKE, struct uffdio_range)
+#define UFFDIO_COPY _IOWR(UFFDIO, _UFFDIO_COPY, struct uffdio_copy)
+#define UFFDIO_ZEROPAGE _IOWR(UFFDIO, _UFFDIO_ZEROPAGE, struct uffdio_zeropage)
+#define UFFDIO_WRITEPROTECT _IOWR(UFFDIO, _UFFDIO_WRITEPROTECT, struct uffdio_writeprotect)
+#define UFFDIO_CONTINUE _IOWR(UFFDIO, _UFFDIO_CONTINUE, struct uffdio_continue)
+struct uffd_msg {
+  __u8 event;
+  __u8 reserved1;
+  __u16 reserved2;
+  __u32 reserved3;
+  union {
+    struct {
+      __u64 flags;
+      __u64 address;
+      union {
+        __u32 ptid;
+      } feat;
+    } pagefault;
+    struct {
+      __u32 ufd;
+    } fork;
+    struct {
+      __u64 from;
+      __u64 to;
+      __u64 len;
+    } remap;
+    struct {
+      __u64 start;
+      __u64 end;
+    } remove;
+    struct {
+      __u64 reserved1;
+      __u64 reserved2;
+      __u64 reserved3;
+    } reserved;
+  } arg;
+} __packed;
+#define UFFD_EVENT_PAGEFAULT 0x12
+#define UFFD_EVENT_FORK 0x13
+#define UFFD_EVENT_REMAP 0x14
+#define UFFD_EVENT_REMOVE 0x15
+#define UFFD_EVENT_UNMAP 0x16
+#define UFFD_PAGEFAULT_FLAG_WRITE (1 << 0)
+#define UFFD_PAGEFAULT_FLAG_WP (1 << 1)
+#define UFFD_PAGEFAULT_FLAG_MINOR (1 << 2)
+struct uffdio_api {
+  __u64 api;
+#define UFFD_FEATURE_PAGEFAULT_FLAG_WP (1 << 0)
+#define UFFD_FEATURE_EVENT_FORK (1 << 1)
+#define UFFD_FEATURE_EVENT_REMAP (1 << 2)
+#define UFFD_FEATURE_EVENT_REMOVE (1 << 3)
+#define UFFD_FEATURE_MISSING_HUGETLBFS (1 << 4)
+#define UFFD_FEATURE_MISSING_SHMEM (1 << 5)
+#define UFFD_FEATURE_EVENT_UNMAP (1 << 6)
+#define UFFD_FEATURE_SIGBUS (1 << 7)
+#define UFFD_FEATURE_THREAD_ID (1 << 8)
+#define UFFD_FEATURE_MINOR_HUGETLBFS (1 << 9)
+#define UFFD_FEATURE_MINOR_SHMEM (1 << 10)
+  __u64 features;
+  __u64 ioctls;
+};
+struct uffdio_range {
+  __u64 start;
+  __u64 len;
+};
+struct uffdio_register {
+  struct uffdio_range range;
+#define UFFDIO_REGISTER_MODE_MISSING ((__u64) 1 << 0)
+#define UFFDIO_REGISTER_MODE_WP ((__u64) 1 << 1)
+#define UFFDIO_REGISTER_MODE_MINOR ((__u64) 1 << 2)
+  __u64 mode;
+  __u64 ioctls;
+};
+struct uffdio_copy {
+  __u64 dst;
+  __u64 src;
+  __u64 len;
+#define UFFDIO_COPY_MODE_DONTWAKE ((__u64) 1 << 0)
+#define UFFDIO_COPY_MODE_WP ((__u64) 1 << 1)
+  __u64 mode;
+  __s64 copy;
+};
+struct uffdio_zeropage {
+  struct uffdio_range range;
+#define UFFDIO_ZEROPAGE_MODE_DONTWAKE ((__u64) 1 << 0)
+  __u64 mode;
+  __s64 zeropage;
+};
+struct uffdio_writeprotect {
+  struct uffdio_range range;
+#define UFFDIO_WRITEPROTECT_MODE_WP ((__u64) 1 << 0)
+#define UFFDIO_WRITEPROTECT_MODE_DONTWAKE ((__u64) 1 << 1)
+  __u64 mode;
+};
+struct uffdio_continue {
+  struct uffdio_range range;
+#define UFFDIO_CONTINUE_MODE_DONTWAKE ((__u64) 1 << 0)
+  __u64 mode;
+  __s64 mapped;
+};
+#define UFFD_USER_MODE_ONLY 1
+#endif