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perf annotate: Fix multiple memory and file descriptor leaks 

Store SYMBOL_ANNOTATE_ERRNO__BPF_MISSING_BTF in variable *ret*, instead
of returning in the middle of the function and leaking multiple
resources: prog_linfo, btf, s and bfdf.

Addresses-Coverity-ID: 1454832 ("Structurally dead code")
Fixes: 11aad897f6 ("perf annotate: Don't return -1 for error when doing BPF disassembly")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20191014171047.GA30850@embeddedor
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Gustavo A. R. Silva 2019-10-14 12:10:47 -05:00 committed by Arnaldo Carvalho de Melo
parent 6080728ff8
commit f948eb45e3
1 changed files with 1 additions and 1 deletions
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2
tools/perf/util/annotate.c
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@ -1758,7 +1758,7 @@ static int symbol__disassemble_bpf(struct symbol *sym,
info_node = perf_env__find_bpf_prog_info(dso->bpf_prog.env,
dso->bpf_prog.id);
if (!info_node) {
return SYMBOL_ANNOTATE_ERRNO__BPF_MISSING_BTF;
ret = SYMBOL_ANNOTATE_ERRNO__BPF_MISSING_BTF;
goto out;
}
info_linear = info_node->info_linear;