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Fix gRPC instrumentation on older kernels #576

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merged 5 commits into from
Dec 31, 2023
Merged

Fix gRPC instrumentation on older kernels #576

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057e2f3
fix grpc on older kernels
edeNFed Dec 31, 2023
50836b9
increate verifier log
edeNFed Dec 31, 2023
7b9e8a3
change to int
edeNFed Dec 31, 2023
c6ef6a3
try to fix verifier
edeNFed Dec 31, 2023
ccdf579
rvert unused
edeNFed Dec 31, 2023
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6 changes: 1 addition & 5 deletions internal/pkg/instrumentation/bpf/google.golang.org/grpc/server/bpf/probe.bpf.c
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Original file line number Diff line number Diff line change
Expand Up @@ -129,11 +129,7 @@ UPROBE_RETURN(server_handleStream, struct grpc_request_t, grpc_events, events, 4
SEC("uprobe/http2Server_operateHeader")
int uprobe_http2Server_operateHeader(struct pt_regs *ctx)
{
u64 frame_pos = 2;
if (is_new_frame_pos) {
frame_pos = 4;
}
void *frame_ptr = get_argument(ctx, frame_pos);
void *frame_ptr = is_new_frame_pos ? get_argument(ctx, 4) : get_argument(ctx, 2);
struct go_slice header_fields = {};
bpf_probe_read(&header_fields, sizeof(header_fields), (void *)(frame_ptr + frame_fields_pos));
char key[W3C_KEY_LENGTH] = "traceparent";
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