I have placed a MIR for "pahole-btf" package (a backport of Impish's dwarves-dfsg package to Bionic and Focal) at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1949286. This way, the kernel builds may depend on "pahole-btf" binary package, from main, and finally include BTF debug information into Bionic and Focal HWE kernels.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1926330 Title: HWE kernels should support eBPF CO-RE Status in dwarves-dfsg package in Ubuntu: Fix Released Status in linux package in Ubuntu: Fix Released Status in dwarves-dfsg source package in Bionic: Won't Fix Status in linux source package in Bionic: Won't Fix Status in dwarves-dfsg source package in Focal: Confirmed Status in linux source package in Focal: Confirmed Status in dwarves-dfsg source package in Groovy: Fix Released Status in linux source package in Groovy: Fix Released Bug description: I had recent discussion with kernel team regarding support or not BTF in HWE kernels (Bionic and Focal). Having CONFIG_DEBUG_INFO_BTF option enabled for HWE kernels (v4.4 and v.4.8) would allow eBPF based code (powered by libbpf or not) to be RO.CE (https://github.com/rafaeldtinoco/portablebpf for more information). By allowing runtime relocations, using provided BTF, libbpf binaries might end up running, without modifications, in different kernel versions (from Bionic HWE v5.4 kernel to Hirsute v5.11). A good example would be to support tools such as: https://github.com/aquasecurity/tracee/discussions/713#discussioncomment-665641 An ebpf powered backend for a containers security solution. Considering: $ rmadisonb dwarves dwarves | 1.9-1 | precise/universe | amd64 dwarves | 1.10-2 | trusty | amd64 dwarves | 1.10-2.1 | xenial/universe | amd64 dwarves | 1.10-2.1build1 | bionic/universe | amd64 dwarves | 1.15-2 | focal/universe | amd64 dwarves | 1.17-1 | groovy/universe | amd64 dwarves | 1.20-1 | hirsute/universe | amd64 dwarves | 1.20-1 | impish/universe | amd64 And the fact that the 'pahole' binary, from dwarves package, is the one to blame, not to have CONFIG_DEBUG_INFO_BTF available, for this bug to be solved we would have to provide a backport of dwarves (at least 1.17-1) to Bionic and Focal. It could have another name (not to mess with original dwarves package and its dependencies) and it is unclear if it needs to be in [main] or [universe]. Question: Would have dwarves backported in -backports be enough for Bionic and Focal HWE kernels compilation to have CONFIG_DEBUG_INFO_BTF enabled ? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dwarves-dfsg/+bug/1926330/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
