x86_32 NX support breaks user-mode-linux

Bug Description

Hi

user-mode-linux builds on amd64 but fails to build on i386 with:
[...]
CC fs/binfmt_script.o
CC fs/binfmt_elf.o
fs/binfmt_elf.c: In function 'load_elf_binary':
fs/binfmt_elf.c:723: error: 'nx_enabled' undeclared (first use in this function)
fs/binfmt_elf.c:723: error: (Each undeclared identifier is reported only once
fs/binfmt_elf.c:723: error: for each function it appears in.)
fs/binfmt_elf.c:724: error: implicit declaration of function 'arch_add_exec_range'
make[2]: *** [fs/binfmt_elf.o] Error 1
make[1]: *** [fs] Error 2
[...]

see http://launchpadlibrarian.net/39441781/buildlog_ubuntu-lucid-i386.user-mode-linux_2.6.32-1um-3ubuntu1_FAILEDTOBUILD.txt.gz

This is due to an Ubuntu patch (copied from RedHat) to add NX support in fs/binfmt_elf.c

Bye

I submitted the same but using my ubuntu address as author to the ubuntu kernel-team list.

This bug was fixed in the package user-mode-linux - 2.6.32-1um-3ubuntu2

---------------
user-mode-linux (2.6.32-1um-3ubuntu2) lucid; urgency=low

* New patch, 62_ubuntu-i386-um-no-nx-enabled, disable nx_enabled test in
binfmt_elf when building UML as it's not available under ARCH=um; should
fix i386 build; LP: #524849.
-- Loic Minier <email address hidden> 2010年2月20日 16:31:59 +0100

Added to my weekly call to get status update for the kernel task.

-JFo

This bug was fixed in the package linux - 2.6.32-15.21

---------------
linux (2.6.32-15.21) lucid; urgency=low

[ Andy Whitcroft ]

* Revert "(pre-stable) drm/i915: Increase fb alignment to 64k"
* Revert "[Config] lenovo-sl-laptop -- enable"
* Revert "ubuntu: lenovo-sl-laptop -- git tip (b19a08f81f)"
* armel -- cramfs module will no longer be built
* d-i -- make all modules optional
* rename the debug packages to match archive standard
- LP: #527837
* lenovo-sl-laptop is no longer built

[ Colin Ian King ]

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[ Colin Watson ]

* ubuntu: dm-raid4-5: Depend on XOR_BLOCKS
* ubuntu: fsam7400: Depend on CHECK_SIGNATURE

[ Jesse Barnes ]

* SAUCE: drm/i915: don't change DRM configuration when releasing load
detect pipe
- LP: #488328

[ Loïc Minier ]

* [Config] armel Update versatile initrd configs
- LP: #524893
* SAUCE: [um] Don't use nx_enabled under UML
- LP: #524849

[ Manoj Iyer ]

* [Config] added new config option CONFIG_SR_REPORT_TIME_LIMIT

[ Mario Limonciello ]

* SAUCE: v3 - Add Dell Business Class Netbook LED driver

[ Rafael J. Wysocki ]

* SAUCE: PM report driver and device suspend/resume times.

[ Surbhi Palande ]

* Revert "[Upstream] e1000e: enhance frame fragment detection"
- CVE-2009-4538
* Revert "[Upstream] e1000: enhance frame fragment detection"
- CVE-2009-4536

[ Tim Gardner ]

* [Config] Enabled CONFIG_LEDS_DELL_NETBOOKS=m
* SAUCE: (pre-stable) netfilter: xt_recent: fix buffer overflow
* SAUCE: (pre-stable) netfilter: xt_recent: fix false match

[ Upstream Kernel Changes ]

* Revert "(pre-stable) eCryptfs: Add getattr function"
* Fix potential crash with sys_move_pages
* futex_lock_pi() key refcnt fix
* futex: Handle user space corruption gracefully
* futex: Handle futex value corruption gracefully
* Fix race in tty_fasync() properly
* hwmon: (w83781d) Request I/O ports individually for probing
* hwmon: (lm78) Request I/O ports individually for probing
* hwmon: (adt7462) Wrong ADT7462_VOLT_COUNT
* ALSA: ctxfi - fix PTP address initialization
* drm/i915: disable hotplug detect before Ironlake CRT detect
* drm/i915: enable self-refresh on 965
* drm/i915: Disable SR when more than one pipe is enabled
* drm/i915: Fix DDC on some systems by clearing BIOS GMBUS setup.
* drm/i915: Add HP nx9020/SamsungSX20S to ACPI LID quirk list
* drm/i915: Fix the incorrect DMI string for Samsung SX20S laptop
* drm/i915: Add MALATA PC-81005 to ACPI LID quirk list
* usb: r8a66597-hcd: Flush the D-cache for the pipe-in transfer buffers.
* i2c-tiny-usb: Fix on big-endian systems
* drm/i915: handle FBC and self-refresh better
* drm/i915: Increase fb alignment to 64k
* drm/i915: Update write_domains on active list after flush.
* regulator: Fix display of null constraints for regulators
* ALSA: hda-intel: Avoid divide by zero crash
* CPUFREQ: Fix use after free of struct powernow_k8_data
* freeze_bdev: don't deactivate successfully frozen MS_RDONLY sb
* cciss: Make cciss_seq_show handle holes in the h->drv[] array
* ioat: fix in...