Package: libbpf1 Version: 1:1.7.0-1 Severity: normal X-Debbugs-Cc: [email protected]
Using latest linux kernel from experimental package linux-image-7.2-amd64 ~$ uname -v #1 SMP PREEMPT_DYNAMIC Debian 7.2~rc7-1~exp1 (2026-08-11) ~$ uname -r 7.2-amd64 The format of the kernel version is not compatible with what libbpf expects. In libbpf_probes.c get_kernel_version() which is called from bpf_object__resolve_externs() get_debian_kernel_version() is not able to parse info->version, which contains #1 SMP PREEMPT_DYNAMIC Debian 7.2~rc7-1~exp1 (2026-08-11) and after that fails, neither is get_kernel_version() able to parse info.release, which contains 7.2-amd64 Both are expecting three numbers for major, minor, patch This means, for example, bpftune is unable to load all tuners. With trace enabled, it shows - bpftune: libbpf: loaded kernel BTF from '/sys/kernel/btf/vmlinux' bpftune: libbpf: extern (kcfg) 'LINUX_KERNEL_VERSION': failed to get kernel version bpftune: libbpf: failed to load BPF skeleton 'tcp_buffer_tuner_bpf': -EINVAL bpftune: BPF load for tuner 'tcp_buffer; failed: 'Invalid argument': Invalid argument Same problem has happened before, for example with #1 SMP PREEMPT_DYNAMIC Debian 7.1~rc2-1~exp1 (2026-05 -07) 7.1-amd64 but I didn't notice it at the time. -- System Information: Debian Release: forky/sid APT prefers stable-security APT policy: (500, 'stable-security'), (500, 'testing'), (1, 'experimental') Architecture: amd64 (x86_64) Kernel: Linux 7.2-amd64 (SMP w/4 CPU threads; PREEMPT) Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB:en Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages libbpf1 depends on: ii libc6 2.42-17 ii libelf1t64 0.195-1 ii zlib1g 1:1.3.dfsg+really1.3.2-3 libbpf1 recommends no packages. libbpf1 suggests no packages. -- no debconf information
