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libbpf-tools/trace_helpers.c: free() called more than once #5514

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libbpf-tools/trace_helpers.c: free() called more than once #5514

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libbpf-tools/trace_helpers.c: free() called more than once
isabert May 22, 2026
1ebb288
Commit additional field changes that are needed potentially
isabert Jun 1, 2026
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14 changes: 14 additions & 0 deletions libbpf-tools/trace_helpers.c
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Original file line number Diff line number Diff line change
Expand Up @@ -491,6 +491,20 @@ static void dso__free_fields(struct dso *dso)
free(dso->ranges);
free(dso->syms);
btf__free(dso->btf);

/* Clear relevant fields in dso to avoid dangling pointers. */
dso->name = NULL;
dso->ranges = NULL;
dso->range_sz = 0;
dso->syms = NULL;
dso->btf = NULL;

/* Zero out size/capacity to avoid stale bounds/alloc decisions. */
dso->syms_sz = 0;
dso->syms_cap = 0;
dso->type = UNKNOWN;
dso->sh_addr = 0;
dso->sh_offset = 0;
}

static int dso__load_sym_table_from_elf(struct dso *dso, int fd)
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