[bpf,3/6] tools: bpftool: fix argument for p_err() in BTF do_dump()
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Message ID 20190815143220.4199-4-quentin.monnet@netronome.com
State Accepted
Delegated to: BPF Maintainers
Headers show
  • tools: bpftool: fix printf()-like functions
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Commit Message

Quentin Monnet Aug. 15, 2019, 2:32 p.m. UTC
The last argument passed to one call to the p_err() function is not
correct, it should be "*argv" instead of "**argv". This may lead to a
segmentation fault error if BTF id cannot be parsed correctly. Let's fix

Fixes: c93cc69004dt ("bpftool: add ability to dump BTF types")
Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
 tools/bpf/bpftool/btf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

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diff --git a/tools/bpf/bpftool/btf.c b/tools/bpf/bpftool/btf.c
index 1b8ec91899e6..8805637f1a7e 100644
--- a/tools/bpf/bpftool/btf.c
+++ b/tools/bpf/bpftool/btf.c
@@ -449,7 +449,7 @@  static int do_dump(int argc, char **argv)
 		btf_id = strtoul(*argv, &endptr, 0);
 		if (*endptr) {
-			p_err("can't parse %s as ID", **argv);
+			p_err("can't parse %s as ID", *argv);
 			return -1;