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-rw-r--r--lib/vsprintf.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 4da1e7aaf9d5..3a1e0843f9a2 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -1235,8 +1235,12 @@ char *escaped_string(char *buf, char *end, u8 *addr, struct printf_spec spec,
len = spec.field_width < 0 ? 1 : spec.field_width;
- /* Ignore the error. We print as many characters as we can */
- string_escape_mem(addr, len, &buf, end - buf, flags, NULL);
+ /*
+ * string_escape_mem() writes as many characters as it can to
+ * the given buffer, and returns the total size of the output
+ * had the buffer been big enough.
+ */
+ buf += string_escape_mem(addr, len, buf, buf < end ? end - buf : 0, flags, NULL);
return buf;
}