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brb avatar brb commented on May 23, 2024 1

We can close the issue once https://bugs.launchpad.net/ubuntu/+source/dwarves/+bug/2025370 gets resolved.

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lmb avatar lmb commented on May 23, 2024

Tried to reproduce this on a VM installed from a Ubunut 23.04 desktop ISO and from main pwru, no luck:

lorenz@lorenz-Standard-PC-Q35-ICH9-2009:~/pwru$ uname -a
Linux lorenz-Standard-PC-Q35-ICH9-2009 6.2.0-24-generic #24-Ubuntu SMP PREEMPT_DYNAMIC Fri Jun 16 12:03:50 UTC 2023 x86_64 x86_64 x86_64 GNU/Linux
lorenz@lorenz-Standard-PC-Q35-ICH9-2009:~/pwru$ lsb_release -a
No LSB modules are available.
Distributor ID:	Ubuntu
Description:	Ubuntu 23.04
Release:	23.04
Codename:	lunar
lorenz@lorenz-Standard-PC-Q35-ICH9-2009:~/pwru$ sudo ./pwru --output-tuple --output-meta --filter-track-skb --output-skb --output-limit-lines 1
2023/06/28 16:21:53 Per cpu buffer size: 4096 bytes
2023/06/28 16:21:53 Attaching kprobes (via kprobe-multi)...
1518 / 1518 [------------------------------------------------------------------------------] 100.00% ? p/s
2023/06/28 16:21:53 Attached (ignored 0)
2023/06/28 16:21:53 Listening for events..
               SKB    CPU          PROCESS                     FUNC
               0x0      3           [sshd]  tcp_established_options netns=0 mark=0x0 ifindex=0 proto=0 mtu=0 len=0 :0->:0()

Can you try stracing the process?

sudo strace -f -e trace=bpf,%file -e signal='!all' ./pwru --output-tuple --output-meta --filter-track-skb --output-skb --output-limit-lines 1

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brb avatar brb commented on May 23, 2024

@lmb Thanks. You can follow the steps from #189 (comment). Also, it contains the strace log.

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Asphaltt avatar Asphaltt commented on May 23, 2024

a VM installed from a Ubunut 23.04 desktop ISO

I built a VM from a Ubuntu 23.04 server ISO.

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