[Bug 2084460] Re: [SRU] Please enable frame-pointer on Noble
Mate Kukri
2084460 at bugs.launchpad.net
Tue Oct 15 09:50:42 UTC 2024
nspr in noble is a build1 of the Debian package. The only delta between
noble and oracular are the frame pointer changes, this patch is a
backport of the oracular changes as nspr - `2:4.35-1.1ubuntu1~24.04`.
Please see my dev PPA for a test build:
https://launchpad.net/~mkukri/+archive/ubuntu/dev/+packages
** Description changed:
[ Impact ]
In order to help developers with profiling, Ubuntu enabled frame-
pointers for packages in the main archive.
https://ubuntu.com/blog/ubuntu-performance-engineering-with-frame-
pointers-by-default
The `Affects` packages were missed due to the packaging issues. These
have been fixed on Oracular and can now be ported to Noble.
[ Test Plan ]
Look at the DW_AT_producer in the associated debug ELF file for flags.
-fno-omit-frame-pointer should be present after the fix.
The following scripts can be used as a reference
https://gist.github.com/julian-klode/85e55553f85c410a1b856a93dce77208
https://gist.github.com/julian-klode/95818246eaef0ac6a54588f7f368e25c
+ The nspr package comes with a build time test-suite that should ensure
+ some level of functionality from the re-built library.
+
+ override_dh_auto_test:
+ ifeq ($(filter nocheck,$(DEB_BUILD_OPTIONS)),)
+ $(MAKE) -C nspr/pr/tests
+ $(MAKE) -C nspr/lib/tests
+ # Skip gethost because it needs DNS, and thus networking.
+ # Skip fdcach, peek and vercheck because they fail.
+ # Skip socket because it freezes.
+ # Skip getproto because it fails on some buildds.
+ # Skip nblayer because it freezes on armel.
+ cd nspr/pr/tests && grep -v '^\(fdcach\|gethost\|getproto\|nblayer\|peek\|socket\|vercheck\)$$' ./runtests.sh | sh - $(CURDIR)/nspr/dist
+ cd nspr/lib/tests && LD_LIBRARY_PATH=$(CURDIR)/nspr/dist/bin$(addprefix :,$(LD_LIBRARY_PATH)) ./base64t
+ cd nspr/lib/tests && LD_LIBRARY_PATH=$(CURDIR)/nspr/dist/bin$(addprefix :,$(LD_LIBRARY_PATH)) ./string
+ endif
+
+
[ Where problems could occur ]
No source changes are made. The packaging fixes have enabled other
security hardening flags. This could have unintended effects.
[ Other Info ]
changes in dpkg have been made to make sure frame-pointers are not
enabled on s390x and ppc64el.
Bug reference with similar SRU -
https://bugs.launchpad.net/ubuntu/+source/authbind/+bug/2081707
** Patch added: "nspr_4.35-1.1ubuntu1~24.04.diff"
https://bugs.launchpad.net/ubuntu/+source/nspr/+bug/2084460/+attachment/5828201/+files/nspr_4.35-1.1ubuntu1~24.04.diff
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https://bugs.launchpad.net/bugs/2084460
Title:
[SRU] Please enable frame-pointer on Noble
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