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Reference: https://github.com/iovisor/bcc/blob/72dbe044395ccffd5249ed1f6c84a5fa4bd21be3/libbpf-tools/gethostlatency.bpf.c
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This is very unhelpful, was this a kernel config change?
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## Session Details
Date: 19-09-2024
Time: IST 20:00 (UTC 14:30)
Link: [PR #25832](https://github.com/bitcoin/bitcoin/pull/25832)
Difficulty: Medium
## Motivation:
Tracing typically involves ca…
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(I try to package `libbpf-tools` from `bcc` for ALT Linux.) On ppc64le and aarch64 architectures `libbpf-tools` fail to compile in `GEN-SKEL`, because of `bpftool` error. Actual cause seems to be the …
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When running `sudo ./bpftrace -p 1234 -e 'kprobe:do_nanosleep { printf("[pid] tick %d\n", pid); }'`, a user would expect only process 1234 to be traced, but all processes are being traced when attachi…
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Something like this should work:
```
bpftrace -e 'kprobe:sys_nanosleep { printf("secs: %d\n", arg0->tv_nsec); }
```
or
```
bpftrace -e 'kprobe:sys_nanosleep { printf("secs: %d\n", ((struct…
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### What reproduces the bug? Provide code if possible.
```
$ sudo ./build/src/bpftrace -e 'BEGIN { @=1; delete(@); exit() }'
Attaching 1 probe...
@: 0
```
This was added in 39f3996d ("S…
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[ 495.155045][ 1] car_power_suspend
[ 495.155053][ 1] del_mega_power_timer heart_beat timer
[ 495.177769][ 1] rpmh_regulator_req: cx.lvl (pm8150_2_s9_level), addr=0x30000: s=sleep ; sent: hlvl=1 …
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Hi geyslan, i saw cookie only supported on kprobe, can we also support it on uprobe tracepoint etc. Maybe i can resolve it.
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When running softirqs, I run into the following exception.
This issue is seen on Debian, with Debian packaged bpfcc.
```
rs@learner:~$ sudo softirqs
write(/sys/kernel/debug/tracing/kprobe_eve…