lib/vsprintf.c | 18 +++++++++++-------
 1 file changed, 11 insertions(+), 7 deletions(-)

diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 3c1853a9d1c0..032fa8bc5752 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -981,7 +981,7 @@ char *symbol_string(char *buf, char *end, void *ptr,
 {
 	unsigned long value;
 #ifdef CONFIG_KALLSYMS
-	char sym[KSYM_SYMBOL_LEN];
+	unsigned long maxlen;
 #endif
 
 	if (fmt[1] == 'R')
@@ -989,18 +989,22 @@ char *symbol_string(char *buf, char *end, void *ptr,
 	value = (unsigned long)ptr;
 
 #ifdef CONFIG_KALLSYMS
+	maxlen = end - buf;
+	if (maxlen > spec.precision)
+		maxlen = spec.precision;
+
 	if (*fmt == 'B' && fmt[1] == 'b')
-		sprint_backtrace_build_id(sym, value);
+		maxlen = sprint_backtrace_build_id(buf, maxlen, value);
 	else if (*fmt == 'B')
-		sprint_backtrace(sym, value);
+		maxlen = sprint_backtrace(buf, maxlen, value);
 	else if (*fmt == 'S' && (fmt[1] == 'b' || (fmt[1] == 'R' && fmt[2] == 'b')))
-		sprint_symbol_build_id(sym, value);
+		maxlen = sprint_symbol_build_id(buf, maxlen, value);
 	else if (*fmt != 's')
-		sprint_symbol(sym, value);
+		maxlen = sprint_symbol(buf, maxlen, value);
 	else
-		sprint_symbol_no_offset(sym, value);
+		maxlen = sprint_symbol_no_offset(buf, maxlen, value);
 
-	return string_nocheck(buf, end, sym, spec);
+	return widen_string(buf, maxlen, end, spec);
 #else
 	return special_hex_number(buf, end, value, sizeof(void *));
 #endif