[2/5] bridge: fix string length warning

Message ID 20201130002135.6537-3-stephen@networkplumber.org
State New
Headers show
  • Fix compiler warnings from GCC-10
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Commit Message

Stephen Hemminger Nov. 30, 2020, 12:21 a.m.
Gcc-10 complains about possible string length overflow.
This can't happen Ethernet address format is always limited to
18 characters or less. Just resize the temp buffer.

Fixes: 70dfb0b8836d ("iplink: bridge: export bridge_id and designated_root")
Cc: nikolay@cumulusnetworks.com
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
 ip/iplink_bridge.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)


diff --git a/ip/iplink_bridge.c b/ip/iplink_bridge.c
index 3e81aa059cb3..d12fd0558f7d 100644
--- a/ip/iplink_bridge.c
+++ b/ip/iplink_bridge.c
@@ -74,7 +74,7 @@  static void explain(void)
 void br_dump_bridge_id(const struct ifla_bridge_id *id, char *buf, size_t len)
-	char eaddr[32];
+	char eaddr[18];
 	ether_ntoa_r((const struct ether_addr *)id->addr, eaddr);
 	snprintf(buf, len, "%.2x%.2x.%s", id->prio[0], id->prio[1], eaddr);