Comments (7)
@lmb suggested that https://elixir.bootlin.com/linux/v6.6/source/kernel/trace/trace_kprobe.c#L884 might be the case. Indeed, we are using symbols instead of addrs - https://github.com/cilium/pwru/blob/v1.0.4/main.go#L314.
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This is the new behavior introduced in 6.6 - https://lore.kernel.org/all/[email protected]/.
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For now you could skip attaching if EADDRNOTAVAIL is generated and log a warning or something like that?
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if EADDRNOTAVAIL is generated and log a warning or something like that
Yep, but we try to attach the same kprobe to multiple functions in a single go. We would need to figure out which function name is causing us troubles. I think we need to switch to addrs instead of syms.
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I patched my vm and now I'm facing the same issue:
./pwru
2023/12/20 09:49:21 Attaching kprobes (via kprobe)...
712 / 2208 [------------------------>__________________________________________________] 32.25% ? p/s2023/12/20 09:49:21 Opening kprobe esp_input_restore_header: creating perf_kprobe PMU (arch-specific fallback for "esp_input_restore_header"): token esp_input_restore_header: opening perf event: cannot assign requested address
ubuntu# uname -a
Linux ubuntu 6.5.13-orbstack-00116-gb64875927ef8 #1 SMP Wed Dec 6 22:19:46 UTC 2023 aarch64 aarch64 aarch64 GNU/Linux
I applied https://github.com/cilium/pwru/pull/297/commits so that I can continue on the json output PR.
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@darox We have released v1.0.5 which should have the tmp fix for the loading problem.
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I just rebased and it works. Thx!
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Related Issues (20)
- build error of "LoadKProbeMultiPWRUWithoutOutputSKB" and so on
- Track kfunc with parameter whose type is struct sock * HOT 3
- --filter-trace-tc option doesn't work with Cilium HOT 7
- Support for Openshift 4.12/13? HOT 1
- CPU utilization HOT 1
- Getting errors HOT 1
- CI flake: Test pcap filter using stack
- CI flake: Test --filter-ifname
- Bug: program kprobe_skb_2: load program: permission denied HOT 2
- invalid go version '1.21.0': must match format 1.23 HOT 1
- unrecognized command line option '-m64'
- Compilation issue (Invalid usage of the XADD return value)
- work in kernel version 4.19 HOT 1
- Add flag --filter-trace-only-bpf to trace only BPF (TC/XDP) progs
- unknown builtin '__builtin_btf_type_id' Unable to build a local release on gcp linux HOT 1
- --filter-trace-tc not working with p4-ebpf program HOT 1
- `--output-skb` not working on eks on 5.10 kernel HOT 1
- pwru doesn't capture ip_forwarding failure HOT 1
- no tcp flags ,such as syn, fin,ack info when exec ./pwru 'port 22 ' --output-tuple --output-meta --output-limit-lines 10 HOT 1
- --filter-trace-xdp does not work with pcap-filter
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