[bpf,4/6] tools: bpftool: fix format string for p_err() in query_flow_dissector()
diff mbox series

Message ID 20190815143220.4199-5-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 format string passed to one call to the p_err() function in
query_flow_dissector() does not match the value that should be printed,
resulting in some garbage integer being printed instead of
strerror(errno) if /proc/self/ns/net cannot be open. Let's fix the
format string.

Fixes: 7f0c57fec80f ("bpftool: show flow_dissector attachment status")
Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
 tools/bpf/bpftool/net.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff mbox series

diff --git a/tools/bpf/bpftool/net.c b/tools/bpf/bpftool/net.c
index 67e99c56bc88..e3b770082a39 100644
--- a/tools/bpf/bpftool/net.c
+++ b/tools/bpf/bpftool/net.c
@@ -197,7 +197,7 @@  static int query_flow_dissector(struct bpf_attach_info *attach_info)
 	fd = open("/proc/self/ns/net", O_RDONLY);
 	if (fd < 0) {
-		p_err("can't open /proc/self/ns/net: %d",
+		p_err("can't open /proc/self/ns/net: %s",
 		return -1;