diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/firmware/efi/libstub/vsprintf.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/firmware/efi/libstub/vsprintf.c b/drivers/firmware/efi/libstub/vsprintf.c index 27685c726c64..d427a7b1ef64 100644 --- a/drivers/firmware/efi/libstub/vsprintf.c +++ b/drivers/firmware/efi/libstub/vsprintf.c @@ -14,6 +14,7 @@ #include <linux/compiler.h> #include <linux/ctype.h> +#include <linux/limits.h> #include <linux/string.h> static int skip_atoi(const char **s) @@ -356,7 +357,11 @@ int vsprintf(char *buf, const char *fmt, va_list ap) continue; case 's': + if (precision < 0) + precision = INT_MAX; s = va_arg(args, char *); + if (!s) + s = precision < 6 ? "" : "(null)"; len = strnlen(s, precision); if (!(flags & LEFT)) |