diff mbox series

[7/7] selftests/bpf: Add test for bpf_get_func_ip in kprobe+offset probe

Message ID 20210707194619.151676-8-jolsa@kernel.org (mailing list archive)
State Superseded
Delegated to: BPF
Headers show
Series bpf, x86: Add bpf_get_func_ip helper | expand

Checks

Context Check Description
netdev/cover_letter success Link
netdev/fixes_present success Link
netdev/patch_count success Link
netdev/tree_selection success Clearly marked for bpf-next
netdev/subject_prefix success Link
netdev/cc_maintainers warning 4 maintainers not CCed: linux-kselftest@vger.kernel.org andrii@kernel.org shuah@kernel.org kpsingh@kernel.org
netdev/source_inline success Was 0 now: 0
netdev/verify_signedoff success Link
netdev/module_param success Was 0 now: 0
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/verify_fixes success Link
netdev/checkpatch warning CHECK: No space is necessary after a cast WARNING: From:/Signed-off-by: email address mismatch: 'From: Jiri Olsa <jolsa@redhat.com>' != 'Signed-off-by: Jiri Olsa <jolsa@kernel.org>' WARNING: externs should be avoided in .c files
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/header_inline success Link

Commit Message

Jiri Olsa July 7, 2021, 7:46 p.m. UTC 
Adding test for bpf_get_func_ip in kprobe+ofset probe.
Because of the offset value it's arch specific, adding
it only for x86_64 architecture.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
 .../testing/selftests/bpf/progs/get_func_ip_test.c  | 13 +++++++++++++
 1 file changed, 13 insertions(+)
diff mbox series

Patch

diff --git a/tools/testing/selftests/bpf/progs/get_func_ip_test.c b/tools/testing/selftests/bpf/progs/get_func_ip_test.c
index 8ca54390d2b1..e8a9428a0ea3 100644
--- a/tools/testing/selftests/bpf/progs/get_func_ip_test.c
+++ b/tools/testing/selftests/bpf/progs/get_func_ip_test.c
@@ -10,6 +10,7 @@  extern const void bpf_fentry_test2 __ksym;
 extern const void bpf_fentry_test3 __ksym;
 extern const void bpf_fentry_test4 __ksym;
 extern const void bpf_modify_return_test __ksym;
+extern const void bpf_fentry_test6 __ksym;
 
 __u64 test1_result = 0;
 SEC("fentry/bpf_fentry_test1")
@@ -60,3 +61,15 @@  int BPF_PROG(fmod_ret_test, int a, int *b, int ret)
 	test5_result = (const void *) addr == &bpf_modify_return_test;
 	return ret;
 }
+
+#ifdef __x86_64__
+__u64 test6_result = 0;
+SEC("kprobe/bpf_fentry_test6+0x5")
+int test6(struct pt_regs *ctx)
+{
+	__u64 addr = bpf_get_func_ip(ctx);
+
+	test6_result = (const void *) addr == &bpf_fentry_test6 + 5;
+	return 0;
+}
+#endif