I examined the build logs from the actual buildd's:
http://launchpadlibrarian.net/55565061/buildlog_ubuntu-maverick-
amd64.linux_2.6.35-21.31_FULLYBUILT.txt.gz
I noticed something peculiar in the 2.6.35-21.31 build log:
#
# Remove all modules not in the inclusion list.
#
if [ -f debian.master/control.d/virtual.inclusion-list ] ; then \
debian/scripts/module-inclusion
/build/buildd/linux-2.6.35/debian/linux-image-2.6.35-21-virtual/lib/modules/2.6.35-21-virtual/kernel
\
debian.master/control.d/virtual.inclusion-list 2>&1 | \
tee virtual.inclusion-list.log; \
/sbin/depmod -b
/build/buildd/linux-2.6.35/debian/linux-image-2.6.35-21-virtual -ea -F
/build/buildd/linux-2.6.35/debian/linux-image-2.6.35-21-virtual/boot/System.map-2.6.35-21-virtual
\
2.6.35-21-virtual 2>&1 |tee virtual.depmod.log; \
fi
/bin/bash: line 1: debian/scripts/module-inclusion: Permission denied
Due to the Permission denied error, the virtual images are not removing
all the modules not in the inclusion list, thus resulting in the larger
-virtual deb size. When doing dpkg-buildpackage -S -rfakeroot... with
the orig.tar.gz I noticed the following warning:
dpkg-source: warning: executable mode 0755 of 'debian/scripts/module-
inclusion' will not be represented in diff
Thus it seems the executable permissions for debian/scripts/module-
inclusion are not represented which results in the Permission denied
error. To test this, I removed the executable permissions for
debian/scripts/module-inclusion from my local test build and was able to
reproduce the Permission denied error. Applying the following patch to
execute debian/scripts/module-inclusion within a sub-shell seems to have
resolved the issue. I've sent this to the Ubuntu kernel team mailing
list for feedback. Thanks.
https://lists.ubuntu.com/archives/kernel-team/2010-September/012763.html
diff --git a/debian/rules.d/2-binary-arch.mk b/debian/rules.d/2-binary-arch.mk
index da93e4d..1d26496 100644
--- a/debian/rules.d/2-binary-arch.mk
+++ b/debian/rules.d/2-binary-arch.mk
@@ -82,7 +82,7 @@ endif
# Remove all modules not in the inclusion list.
#
if [ -f $(DEBIAN)/control.d/$(target_flavour).inclusion-list ] ; then \
- $(DROOT)/scripts/module-inclusion
$(pkgdir)/lib/modules/$(abi_release)-$*/kernel \
+ $(SHELL) $(DROOT)/scripts/module-inclusion
$(pkgdir)/lib/modules/$(abi_release)-$*/kernel \
$(DEBIAN)/control.d/$(target_flavour).inclusion-list
2>&1 | \
tee $(target_flavour).inclusion-list.log; \
/sbin/depmod -b $(pkgdir) -ea -F
$(pkgdir)/boot/System.map-$(abi_release)-$* \
--
-virtual kernel contains too many modules
https://bugs.launchpad.net/bugs/621175
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