diff options
| -rw-r--r-- | arch/s390/kernel/debug.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/s390/kernel/debug.c b/arch/s390/kernel/debug.c index 2612f634e826..7650f2adb5cf 100644 --- a/arch/s390/kernel/debug.c +++ b/arch/s390/kernel/debug.c @@ -1587,6 +1587,11 @@ static int debug_input_flush_fn(debug_info_t *id, struct debug_view *view, char input_buf[1]; int rc = user_len; + if (!user_len) { + rc = -EINVAL; + goto out; + } + if (user_len > 0x10000) user_len = 0x10000; if (*offset != 0) { |