kernel.git/tools/testing/selftests/bpf/progs/test_attach_probe.c, branch master

selftests/bpf: Add tests for bpf_copy_from_user_str kfunc.

2024-08-23T22:40:11Z

This adds tests for both the happy path and the error path. Signed-off-by: Jordan Rome Link: https://lore.kernel.org/r/20240823195101.3621028-2-linux@jordanrome.com Signed-off-by: Alexei Starovoitov

selftests/bpf: Add test for legacy/perf kprobe/uprobe attach mode

2023-03-06T17:38:08Z

Add the testing for kprobe/uprobe attaching in default, legacy, perf and link mode. And the testing passed: ./test_progs -t attach_probe $5/1 attach_probe/manual-default:OK $5/2 attach_probe/manual-legacy:OK $5/3 attach_probe/manual-perf:OK $5/4 attach_probe/manual-link:OK $5/5 attach_probe/auto:OK $5/6 attach_probe/kprobe-sleepable:OK $5/7 attach_probe/uprobe-lib:OK $5/8 attach_probe/uprobe-sleepable:OK $5/9 attach_probe/uprobe-ref_ctr:OK $5 attach_probe:OK Summary: 1/9 PASSED, 0 SKIPPED, 0 FAILED Signed-off-by: Menglong Dong Signed-off-by: Andrii Nakryiko Reviewed-by: Biao Jiang Link: https://lore.kernel.org/bpf/20230306064833.7932-4-imagedong@tencent.com

selftests/bpf: Split test_attach_probe into multi subtests

2023-03-06T17:38:08Z

In order to adapt to the older kernel, now we split the "attach_probe" testing into multi subtests: manual // manual attach tests for kprobe/uprobe auto // auto-attach tests for kprobe and uprobe kprobe-sleepable // kprobe sleepable test uprobe-lib // uprobe tests for library function by name uprobe-sleepable // uprobe sleepable test uprobe-ref_ctr // uprobe ref_ctr test As sleepable kprobe needs to set BPF_F_SLEEPABLE flag before loading, we need to move it to a stand alone skel file, in case of it is not supported by kernel and make the whole loading fail. Therefore, we can only enable part of the subtests for older kernel. Signed-off-by: Menglong Dong Signed-off-by: Andrii Nakryiko Reviewed-by: Biao Jiang Link: https://lore.kernel.org/bpf/20230306064833.7932-3-imagedong@tencent.com

selftests/bpf: Attach to fopen()/fclose() in attach_probe

2023-02-10T23:21:27Z

malloc() and free() may be completely replaced by sanitizers, use fopen() and fclose() instead. Signed-off-by: Ilya Leoshkevich Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20230210001210.395194-7-iii@linux.ibm.com

selftests/bpf: use BPF_KSYSCALL and SEC("ksyscall") in selftests

2022-07-19T16:33:18Z

Convert few selftest that used plain SEC("kprobe") with arch-specific syscall wrapper prefix to ksyscall/kretsyscall and corresponding BPF_KSYSCALL macro. test_probe_user.c is especially benefiting from this simplification. Tested-by: Alan Maguire Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/r/20220714070755.3235561-6-andrii@kernel.org Signed-off-by: Alexei Starovoitov

selftests/bpf: add tests for sleepable (uk)probes

2022-06-17T02:27:30Z

Add tests that ensure sleepable uprobe programs work correctly. Add tests that ensure sleepable kprobe programs cannot attach. Also add tests that attach both sleepable and non-sleepable uprobe programs to the same location (i.e. same bpf_prog_array). Acked-by: Andrii Nakryiko Signed-off-by: Delyan Kratunov Link: https://lore.kernel.org/r/c744e5bb7a5c0703f05444dc41f2522ba3579a48.1655248076.git.delyank@fb.com Signed-off-by: Alexei Starovoitov

selftests/bpf: Use target-less SEC() definitions in various tests

2022-04-28T21:46:04Z

Add new or modify existing SEC() definitions to be target-less and validate that libbpf handles such program definitions correctly. For kprobe/kretprobe we also add explicit test that generic bpf_program__attach() works in cases when kprobe definition contains proper target. It wasn't previously tested as selftests code always explicitly specified the target regardless. Signed-off-by: Andrii Nakryiko Signed-off-by: Daniel Borkmann Acked-by: Song Liu Link: https://lore.kernel.org/bpf/20220428185349.3799599-4-andrii@kernel.org

selftests/bpf: Add tests for u[ret]probe attach by name

2022-04-04T02:56:00Z

add tests that verify attaching by name for 1. local functions in a program 2. library functions in a shared object ...succeed for uprobe and uretprobes using new "func_name" option for bpf_program__attach_uprobe_opts(). Also verify auto-attach works where uprobe, path to binary and function name are specified, but fails with -EOPNOTSUPP with a SEC name that does not specify binary path/function. Signed-off-by: Alan Maguire Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/1648654000-21758-5-git-send-email-alan.maguire@oracle.com

libbpf: Merge selftests' bpf_trace_helpers.h into libbpf's bpf_tracing.h

2020-03-03T00:25:14Z

Move BPF_PROG, BPF_KPROBE, and BPF_KRETPROBE macro into libbpf's bpf_tracing.h header to make it available for non-selftests users. Signed-off-by: Andrii Nakryiko Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20200229231112.1240137-5-andriin@fb.com

selftests/bpf: Fix BPF_KRETPROBE macro and use it in attach_probe test

2020-03-03T00:25:14Z

For kretprobes, there is no point in capturing input arguments from pt_regs, as they are going to be, most probably, clobbered by the time probed kernel function returns. So switch BPF_KRETPROBE to accept zero or one argument (optional return result). Fixes: ac065870d928 ("selftests/bpf: Add BPF_PROG, BPF_KPROBE, and BPF_KRETPROBE macros") Signed-off-by: Andrii Nakryiko Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20200229231112.1240137-4-andriin@fb.com