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-rw-r--r--tools/bpf/bpftool/prog.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c
index d942c1e3372c..acdb2c245f0a 100644
--- a/tools/bpf/bpftool/prog.c
+++ b/tools/bpf/bpftool/prog.c
@@ -940,7 +940,7 @@ static int parse_attach_detach_args(int argc, char **argv, int *progfd,
}
if (*attach_type == BPF_FLOW_DISSECTOR) {
- *mapfd = -1;
+ *mapfd = 0;
return 0;
}