X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=lib%2Fseq_buf.c;h=6aabb609dd87196778b4b4a399e3cd01067e656a;hb=3f35cd2c656116f30cef95c8f489cebde048a0ab;hp=11f2ae0f90996ac0463ae712785c0135e3576fb8;hpb=a3841f94c7ecb3ede0f888d3fcfe8fb6368ddd7a;p=mirror_ubuntu-bionic-kernel.git

diff --git a/lib/seq_buf.c b/lib/seq_buf.c
index 11f2ae0f9099..6aabb609dd87 100644
--- a/lib/seq_buf.c
+++ b/lib/seq_buf.c
@@ -144,9 +144,13 @@ int seq_buf_puts(struct seq_buf *s, const char *str)
 
 	WARN_ON(s->size == 0);
 
+	/* Add 1 to len for the trailing null byte which must be there */
+	len += 1;
+
 	if (seq_buf_can_fit(s, len)) {
 		memcpy(s->buffer + s->len, str, len);
-		s->len += len;
+		/* Don't count the trailing null byte against the capacity */
+		s->len += len - 1;
 		return 0;
 	}
 	seq_buf_set_overflow(s);