[PATCH bpf-next 2/4] tools: bpftool: fix potential format truncation

[Jakub Kicinski]

GCC 7 complains:

xlated_dumper.c: In function ‘print_call’:
xlated_dumper.c:179:10: warning: ‘%s’ directive output may be truncated writing 
up to 255 bytes into a region of size between 249 and 253 [-Wformat-truncation=]
     "%+d#%s", insn->off, sym->name);

Add a bit more space to the buffer so it can handle the entire
string and integer without truncation.

Signed-off-by: Jakub Kicinski <jakub.kicin...@netronome.com>
---
 tools/bpf/bpftool/xlated_dumper.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/bpf/bpftool/xlated_dumper.h 
b/tools/bpf/bpftool/xlated_dumper.h
index 51c935d38ae2..b34affa7ef2d 100644
--- a/tools/bpf/bpftool/xlated_dumper.h
+++ b/tools/bpf/bpftool/xlated_dumper.h
@@ -49,7 +49,7 @@ struct dump_data {
        unsigned long address_call_base;
        struct kernel_sym *sym_mapping;
        __u32 sym_count;
-       char scratch_buff[SYM_MAX_NAME];
+       char scratch_buff[SYM_MAX_NAME + 8];
 };
 
 void kernel_syms_load(struct dump_data *dd);
-- 
2.15.1