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I am developing eBPF programming. Sometimes I cannot get the program name using execve, but I can use execv and syscall (SYS_execve,...). The specific code is as follows: ebpf code static u32 ...
Yong Fu's user avatar
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1 answer
90 views

I am still learning debugging tools on Visual Studio 2022. How do you use the conditional option on breakpoint to compare values with Guid. I want to use the capabilities of debugging tools in order ...
0 votes
1 answer
138 views

I have a custom attribute class. The custom attribute runs on every request. Since my requests are async. I want to know how many times my method on custom attribute runs. Is there a way to count the ...
2 votes
0 answers
195 views

I recompiled a custom 5.15 kernel for my Android Pixel 6 phone with Android 13 with event tracing enabled (especially syscall tracepoints). After booting, the kernel does not have the /sys/kernel/...
2 votes
1 answer
108 views

I am adding tracepoints for debugging in Visual Studio 2022 with a common action. (In my case: "{TimeSpan.FromTicks(DateTime.Now.Ticks).TotalSeconds}") Instead of copy-pasting in the same ...
0 votes
1 answer
160 views

I used the program type tracepoint, tracepoint /sched/sched_wakeup, and the function parameter tracepoint format。But I changed the raw_tracepoint type, it is not useful, error:loading objects: field ...
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0 answers
308 views

I am trying to build a kernel module(.ko) to trace context switch of system. So I use the sched_switch tracepoint and want to register my function to it. But When I build my code, there are some ...
Liyuu's user avatar
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0 votes
1 answer
624 views

I am new to eBPF and currently trying to send all the executed commands with arguments in the userspace using a perf map. I manage to send most of my data, but not the one accessed with ...
0 votes
0 answers
395 views

I am trying to capture incoming packets with tracepoint events in the net category. As per this blog, netif_receive_skb seems to be a suitable tracepoint (one of the earliest points in the networking ...
2 votes
1 answer
764 views

I am trying to retrieve the payload of UDP packets using tracepoint netif_receive_skb at the receiver. The goal is to get the packet payload and send it to userspace for further processing. Method 1: ...
1 vote
1 answer
205 views

I have a eBPF function that is attached to the page_fault_user tracepoint. struct trace_event_raw_x86_exceptions { struct trace_entry ent; long unsigned int address; long unsigned int ip; ...
0 votes
1 answer
991 views

I use cilium-ebpf to write some simple monitoring programs. Currently I want to use tracepoint/syscalls/sys_enter_execve to get argv. but I am having problems with missing arguments. The following is ...
0 votes
1 answer
2k views

I'm using ebpf in container environment to trace several kernel tracepoints. Part of the code is shown beloew: SEC("tp/sched/sched_wakeup") int handle__sched_wakeup(struct ...
4 votes
1 answer
4k views

I have the following simple eBPF program: #include "vmlinux.h" #include <bpf/bpf_helpers.h> struct sys_enter_execve_ctx { unsigned short common_type; unsigned char common_flags; ...
2 votes
2 answers
2k views

As per this document (amongst others): https://blogs.oracle.com/linux/post/taming-tracepoints-in-the-linux-kernel It is possible using both eBPF and other kernel-provided mechanisms to register ...

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