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-rw-r--r--kernel/trace/blktrace.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index a400b86..73d7860 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -327,7 +327,7 @@ static ssize_t blk_msg_write(struct file *filp, const char __user *buffer,
char *msg;
struct blk_trace *bt;
- if (count > BLK_TN_MAX_MSG - 1)
+ if (count >= BLK_TN_MAX_MSG)
return -EINVAL;
msg = kmalloc(count + 1, GFP_KERNEL);