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[yunwei37]

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[venumadhavjosyula]

I am getting following error
[vjosyula@localhost bpftime]$ make build
cmake -Bbuild -DBPFTIME_ENABLE_UNIT_TESTING=1 -DBUILD_BPFTIME_DAEMON=1 -DCMAKE_BUILD_TYPE:STRING=Debug
-- The C compiler identification is GNU 11.4.1
-- The CXX compiler identification is GNU 11.4.1
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Enabling ubsan for Debug builds; Processor=x86_64
-- Started CMake for bpftime v0.1.0...

CMake Error at /usr/share/cmake/Modules/ExternalProject.cmake:1721 (file):
file problem creating directory:
/home/vjosyula/work/bpftime_enunomia/building_from_source/bpftime/third_party/libbpf//src
Call Stack (most recent call first):
/usr/share/cmake/Modules/ExternalProject.cmake:3633 (_ep_set_directories)
cmake/libbpf.cmake:6 (ExternalProject_Add)
CMakeLists.txt:67 (include)

CMake Error at /usr/share/cmake/Modules/ExternalProject.cmake:1723 (message):
dir
'/home/vjosyula/work/bpftime_enunomia/building_from_source/bpftime/third_party/libbpf//src'
does not exist after file(MAKE_DIRECTORY)
Call Stack (most recent call first):
/usr/share/cmake/Modules/ExternalProject.cmake:3633 (_ep_set_directories)
cmake/libbpf.cmake:6 (ExternalProject_Add)
CMakeLists.txt:67 (include)

-- Configuring incomplete, errors occurred!
See also "/home/vjosyula/work/bpftime_enunomia/building_from_source/bpftime/build/CMakeFiles/CMakeOutput.log".
make: *** [Makefile:50: build] Error 1
[vjosyula@localhost bpftime]$

commands used are
make build

[vjosyula@localhost bpftime]$ pwd
/home/vjosyula/work/bpftime_enunomia/building_from_source/bpftime
[vjosyula@localhost bpftime]$

[yunwei37]

hi @venumadhavjosyula , have you run git submodule update --init --recursive?

Please refer to https://eunomia.dev/bpftime/documents/build-and-test/#table-of-contents for details

[venumadhavjosyula]

@yunwei37 after doing you suggested I was able to do needful. Thanks , for your help

[venumadhavjosyula]

Another question, I trying to attach random process in my case it is firefox process
[root@localhost bpftime]# bpftime attach 145025
[2024-03-01 02:35:36.276] [info] Injecting to 145025
[2024-03-01 02:35:36.351] [error] Failed to inject: Bootstrapper failed due to 'auxv-not-found'; please file a bug

Ps dump

root 7398 7394 0 Feb29 ? 00:00:00 fusermount -o rw,nosuid,nodev,fsname=portal,auto_unmount,subtype=portal -- /run/user/1000/doc
vjosyula 7404 5449 0 Feb29 ? 00:00:02 /usr/libexec/xdg-desktop-portal-gnome
vjosyula 7418 5449 0 Feb29 ? 00:00:02 /usr/libexec/xdg-desktop-portal-gtk
root 135085 1 0 Feb29 ? 00:00:35 /usr/bin/containerd
root 135103 1 0 Feb29 ? 00:01:09 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock
root 142502 2 0 Feb29 ? 00:00:00 [kworker/7:0-xfs-inodegc/dm-0]
vjosyula 144928 5449 0 Feb29 ? 00:00:29 /usr/lib64/firefox/firefox --new-window
vjosyula 145025 144928 0 Feb29 ? 00:00:00 /usr/lib64/firefox/firefox -contentproc -parentBuildID 20240130173142 -prefsLen 28482 -prefMapSize 236314 -appDir /usr/lib64/firefox/brow
vjosyula 145072 144928 0 Feb29 ? 00:00:01 /usr/lib64/firefox/firefox -contentproc -childID 1 -isForBrowser -prefsLen 28623 -prefMapSize 236314 -jsInitLen 240916 -parentBuildID 202
vjosyula 145124 144928 0 Feb29 ? 00:00:00 /usr/lib64/firefox/firefox -contentproc -childID 2 -isForBrowser -prefsLen 34102 -prefMapSize 236314 -jsInitLen 240916 -parentBuildID 202
vjosyula 145191 144928 0 Feb29 ? 00:00:04 /usr/lib64/firefox/firefox -contentproc -childID 3 -isForBrowser -prefsLen 29235 -prefMapSize 236314 -jsInitLen 240916 -parentBuildID 202
vjosyula 145193 144928 0 Feb29 ? 00:00:00 /usr/lib64/firefox/firefox -contentproc -childID 4 -isForBrowser -prefsLen 29235 -prefMapSize 236314 -jsInitLen 240916 -parentBuildID 202
vjosyula 145234 144928 0 Feb29 ? 00:00:00 /usr/lib64/firefox/firefox -contentproc -childID 5 -isForBrowser -prefsLen 29235 -prefMapSize 236314 -jsInitLen 240916 -parentBuildID 202
vjosyula 145324 144928 0 Feb29 ? 00:00:00 /usr/lib64/firefox/firefox -contentproc -childID 7 -isForBrowser -prefsLen 29373 -prefMapSize 236314 -jsInitLen 240916 -parentBuildID 202

Am I missing something.

[yunwei37]

Seems like an error related to Frida, you can read the tools/cli-cpp source code, make a small poc and report the error to https://github.com/frida/frida-gum

[venumadhavjosyula]

Totally different no related to above

We are using example/minimal/uprobe.bpf.c and example/minimal/uprobe.c for our use-case

In the code below
SEC("uprobe//home/vjosyula/work/bpftime_enunomia/building_from_source/dpdk_examples/The-DPDK-Examples/build/simple_l3fwd:fwd_pckt")
int do_uprobe_trace(struct pt_regs *ctx)
{
unsigned port_id;
bpf_probe_read(&port_id, sizeof(unsigned ), (void *)PT_REGS_PARM1(ctx));
bpf_printk("target_func called. Ox%x\n",port_id);
return 0;
}

The definition of fwd_pkt is as follows,
void fwd_pckt(struct rte_mbuf *pckt, unsigned port_id, struct rte_hash *route_tbl)

In in do_uprobe_trace , how do I access these three i/p params using struct pt_regs *ctx ?

Can you please suggest. I want to access i/p params of function being uprobed using *ctx

[lkyptw]

Hi, I'm study bpftime recently. I have a question that does bpftime can use on ARM architecture machine? If no, and why? Thanks.

[Officeyutong]

uprobe related features should work on ARM, but we have few tries