From 8a15d5ced8c626c0331974c7281c1d651f7b0d83 Mon Sep 17 00:00:00 2001 From: Quentin Monnet Date: Thu, 15 Aug 2019 15:32:18 +0100 Subject: [PATCH] tools: bpftool: fix format string for p_err() in query_flow_dissector() 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 Reviewed-by: Jakub Kicinski Signed-off-by: Alexei Starovoitov --- tools/bpf/bpftool/net.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/bpf/bpftool/net.c b/tools/bpf/bpftool/net.c index a213a9b..4f52d315 100644 --- a/tools/bpf/bpftool/net.c +++ b/tools/bpf/bpftool/net.c @@ -226,7 +226,7 @@ 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", strerror(errno)); return -1; } -- 2.7.4