Bug#986905: systemd armhf: Attaching egress BPF program to cgroup failed,Re: Bug#986905: systemd armhf: Attaching egress BPF program to cgroup failed
> So you enabled "DefaultIPAccounting=yes" for the systemd --user > instances (i.e. in user.conf) and only those systemd --user instances > trigger that error? Yes (on amd64, arm64 and armhf). I do not see the error in the systemd PID 1 except on an armhf kernel with CONFIG_BPF_JIT_ALWAYS_ON=y. But we do not need to consider the issue on the armhf kernel here. > If you remove "DefaultIPAccounting=yes" from user.conf, are the error > messages gone? Yes. This seems something like "Permission denied" or "Operation not permitted", but the error is "Invalid argument", which seems strange. Currently, to trigger this issue, I need task-xfce-desktop (on every arch.). I believe that this can be reproduced without task-xfce-desktop, and will try to find a reproduction procedure with CUI in a weekend... Best regards, Ryutaroh
Bug#986905: systemd armhf: Attaching egress BPF program to cgroup failed, Re: Bug#986905: systemd armhf: Attaching egress BPF program to cgroup failed
Am 15.04.21 um 02:27 schrieb Ryutaroh Matsumoto: Can you attach the output of grep BPF /boot/config-$(uname -r) root@qemu-bullseye-armhf:~# uname -a Linux qemu-bullseye-armhf 5.10.0-5-armmp-lpae #1 SMP Debian 5.10.26-1 (2021-03-27) armv7l GNU/Linux root@qemu-bullseye-armhf:~# fgrep -nH BPF /boot/config-5.10.0-5-armmp-lpae /boot/config-5.10.0-5-armmp-lpae:161:CONFIG_CGROUP_BPF=y /boot/config-5.10.0-5-armmp-lpae:189:CONFIG_BPF=y /boot/config-5.10.0-5-armmp-lpae:216:CONFIG_BPF_LSM=y /boot/config-5.10.0-5-armmp-lpae:217:CONFIG_BPF_SYSCALL=y /boot/config-5.10.0-5-armmp-lpae:218:# CONFIG_BPF_JIT_ALWAYS_ON is not set /boot/config-5.10.0-5-armmp-lpae:219:# CONFIG_BPF_PRELOAD is not set /boot/config-5.10.0-5-armmp-lpae:1195:CONFIG_IPV6_SEG6_BPF=y /boot/config-5.10.0-5-armmp-lpae:1335:CONFIG_NETFILTER_XT_MATCH_BPF=m /boot/config-5.10.0-5-armmp-lpae:1554:# CONFIG_BPFILTER is not set /boot/config-5.10.0-5-armmp-lpae:1714:CONFIG_NET_CLS_BPF=m /boot/config-5.10.0-5-armmp-lpae:1741:CONFIG_NET_ACT_BPF=m /boot/config-5.10.0-5-armmp-lpae:1796:CONFIG_BPF_JIT=y /boot/config-5.10.0-5-armmp-lpae:1797:CONFIG_BPF_STREAM_PARSER=y /boot/config-5.10.0-5-armmp-lpae:2013:CONFIG_LWTUNNEL_BPF=y /boot/config-5.10.0-5-armmp-lpae:2021:CONFIG_HAVE_EBPF_JIT=y /boot/config-5.10.0-5-armmp-lpae:7784:# CONFIG_NBPFAXI_DMA is not set /boot/config-5.10.0-5-armmp-lpae:10100:CONFIG_BPF_EVENTS=y /boot/config-5.10.0-5-armmp-lpae:10173:CONFIG_TEST_BPF=m root@qemu-bullseye-armhf:~# In addition, there is little difference between arm64 and armhf in linux kernel config as follows. Is it related with CONFIG_BPF_JIT_DEFAULT_ON??? Hm, I don't think so. The above looks ok. Can you raise this upstream please (maybe with a reference to #7054). I don't have an armhf setup to easily reproduce this myself. I'd attach an strace log to the upstream bug report as well. Regards, Michael OpenPGP_signature Description: OpenPGP digital signature
Bug#986905: systemd armhf: Attaching egress BPF program to cgroup failed,Re: Bug#986905: systemd armhf: Attaching egress BPF program to cgroup failed
> Can you attach the output of > grep BPF /boot/config-$(uname -r) root@qemu-bullseye-armhf:~# uname -a Linux qemu-bullseye-armhf 5.10.0-5-armmp-lpae #1 SMP Debian 5.10.26-1 (2021-03-27) armv7l GNU/Linux root@qemu-bullseye-armhf:~# fgrep -nH BPF /boot/config-5.10.0-5-armmp-lpae /boot/config-5.10.0-5-armmp-lpae:161:CONFIG_CGROUP_BPF=y /boot/config-5.10.0-5-armmp-lpae:189:CONFIG_BPF=y /boot/config-5.10.0-5-armmp-lpae:216:CONFIG_BPF_LSM=y /boot/config-5.10.0-5-armmp-lpae:217:CONFIG_BPF_SYSCALL=y /boot/config-5.10.0-5-armmp-lpae:218:# CONFIG_BPF_JIT_ALWAYS_ON is not set /boot/config-5.10.0-5-armmp-lpae:219:# CONFIG_BPF_PRELOAD is not set /boot/config-5.10.0-5-armmp-lpae:1195:CONFIG_IPV6_SEG6_BPF=y /boot/config-5.10.0-5-armmp-lpae:1335:CONFIG_NETFILTER_XT_MATCH_BPF=m /boot/config-5.10.0-5-armmp-lpae:1554:# CONFIG_BPFILTER is not set /boot/config-5.10.0-5-armmp-lpae:1714:CONFIG_NET_CLS_BPF=m /boot/config-5.10.0-5-armmp-lpae:1741:CONFIG_NET_ACT_BPF=m /boot/config-5.10.0-5-armmp-lpae:1796:CONFIG_BPF_JIT=y /boot/config-5.10.0-5-armmp-lpae:1797:CONFIG_BPF_STREAM_PARSER=y /boot/config-5.10.0-5-armmp-lpae:2013:CONFIG_LWTUNNEL_BPF=y /boot/config-5.10.0-5-armmp-lpae:2021:CONFIG_HAVE_EBPF_JIT=y /boot/config-5.10.0-5-armmp-lpae:7784:# CONFIG_NBPFAXI_DMA is not set /boot/config-5.10.0-5-armmp-lpae:10100:CONFIG_BPF_EVENTS=y /boot/config-5.10.0-5-armmp-lpae:10173:CONFIG_TEST_BPF=m root@qemu-bullseye-armhf:~# In addition, there is little difference between arm64 and armhf in linux kernel config as follows. Is it related with CONFIG_BPF_JIT_DEFAULT_ON??? I have not seen the reported issue on arm64 (nor amd64). ryutaroh@ryutaroh-CFSZ6-1L:/var/tmp/linux-config$ fgrep BPF usr/src/linux-config-5.10/config.armhf_none_armmp-lpae >bpf-armhf.txt ryutaroh@ryutaroh-CFSZ6-1L:/var/tmp/linux-config$ fgrep BPF usr/src/linux-config-5.10/config.arm64_none_arm64 >bpf-arm64.txt ryutaroh@ryutaroh-CFSZ6-1L:/var/tmp/linux-config$ diff -u bpf-arm64.txt bpf-armhf.txt --- bpf-arm64.txt 2021-04-15 09:24:59.596968170 +0900 +++ bpf-armhf.txt 2021-04-15 09:24:40.961010643 +0900 @@ -2,9 +2,7 @@ CONFIG_BPF=y CONFIG_BPF_LSM=y CONFIG_BPF_SYSCALL=y -CONFIG_ARCH_WANT_DEFAULT_BPF_JIT=y # CONFIG_BPF_JIT_ALWAYS_ON is not set -CONFIG_BPF_JIT_DEFAULT_ON=y # CONFIG_BPF_PRELOAD is not set CONFIG_IPV6_SEG6_BPF=y CONFIG_NETFILTER_XT_MATCH_BPF=m @@ -15,6 +13,6 @@ CONFIG_BPF_STREAM_PARSER=y CONFIG_LWTUNNEL_BPF=y CONFIG_HAVE_EBPF_JIT=y +# CONFIG_NBPFAXI_DMA is not set CONFIG_BPF_EVENTS=y -# CONFIG_BPF_KPROBE_OVERRIDE is not set CONFIG_TEST_BPF=m Best regards, Ryutaroh
