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| author |   Jiri Olsa <jolsa@redhat.com> | 2021-07-14 11:43:56 +0200 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2021-07-15 17:59:09 -0700 |
| commit | 9ffd9f3ff7193933dae171740ab70a103d460065 (patch) | |
| tree | a274a2d5bad87bc289efe4c3da0da20bf2e8eed8 /kernel/bpf | |
| parent | bpf: Add bpf_get_func_ip helper for tracing programs (diff) | |
| download | linux-dev-9ffd9f3ff7193933dae171740ab70a103d460065.tar.xz linux-dev-9ffd9f3ff7193933dae171740ab70a103d460065.zip | |
bpf: Add bpf_get_func_ip helper for kprobe programs
Adding bpf_get_func_ip helper for BPF_PROG_TYPE_KPROBE programs,
so it's now possible to call bpf_get_func_ip from both kprobe and
kretprobe programs.
Taking the caller's address from 'struct kprobe::addr', which is
defined for both kprobe and kretprobe.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org>
Link: https://lore.kernel.org/bpf/20210714094400.396467-5-jolsa@kernel.org
Diffstat (limited to 'kernel/bpf')
| -rw-r--r-- | kernel/bpf/verifier.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index ceef190514e4..97216f799ba8 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -6175,6 +6175,8 @@ static int check_get_func_ip(struct bpf_verifier_env *env) return -ENOTSUPP; } return 0; + } else if (type == BPF_PROG_TYPE_KPROBE) { + return 0; } verbose(env, "func %s#%d not supported for program type %d\n", |