Test Build 1) Old behavior goal: show limitations/issues.
- original packaging - zfs not built with debug symbols - zfs modules not present in debug package - extra modules lack .gnu_debuglink section Original packaging: There are no ZFS modules in the debug package: $ dpkg-deb -x linux-image-unsigned-5.3.0-8-generic- dbgsym_5.3.0-8.9_amd64.ddeb ddeb-orig $ ls ddeb-orig/usr/lib/debug/lib/modules/5.3.0-8-generic/kernel/zfs ...: No such file or directory Accordingly, the ZFS modules are the only modules without '.gnu_debuglink' section in the 'linux-modules' package: $ dpkg-deb -x linux-modules-5.3.0-8-generic_5.3.0-8.9_amd64.deb deb-modules $ find deb-modules/ -name '*.ko' | while read ko; do objdump -h -j .gnu_debuglink $ko >/dev/null 2>&1 || echo "Module without debug link '$ko'"; done Module without debug link 'deb-modules/lib/modules/5.3.0-8-generic/kernel/zfs/icp.ko' Module without debug link 'deb-modules/lib/modules/5.3.0-8-generic/kernel/zfs/spl.ko' Module without debug link 'deb-modules/lib/modules/5.3.0-8-generic/kernel/zfs/zavl.ko' Module without debug link 'deb-modules/lib/modules/5.3.0-8-generic/kernel/zfs/zcommon.ko' Module without debug link 'deb-modules/lib/modules/5.3.0-8-generic/kernel/zfs/zfs.ko' Module without debug link 'deb-modules/lib/modules/5.3.0-8-generic/kernel/zfs/zlua.ko' Module without debug link 'deb-modules/lib/modules/5.3.0-8-generic/kernel/zfs/znvpair.ko' Module without debug link 'deb-modules/lib/modules/5.3.0-8-generic/kernel/zfs/zunicode.ko' By the way, this is also the case for *all* modules in the 'linux-modules-extra' package: (only modules in the 'linux-modules' package have '.gnu_debuglink' sections). $ dpkg-deb -x linux-modules- extra-5.3.0-8-generic_5.3.0-8.9_amd64.deb deb-modules-extras $ find deb-modules-extras/ -name '*.ko' | wc -l 4508 $ find deb-modules-extras/ -name '*.ko' | while read ko; do objdump -h -j .gnu_debuglink $ko >/dev/null 2>&1 || echo "Module without debug link '$ko'"; done | wc -l 4508 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1840704 Title: ZFS kernel modules lack debug symbols To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1840704/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs