diff --git a/Makefile b/Makefile
index 923d9b7..01d4d25 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,7 @@
 KDIR=/usr/src/kernels/$(shell uname -r)
 
 obj-m += demo.o
+obj-m += blk_kprobe.o
 
 all:
 	make -C $(KDIR) M=$(shell pwd) modules
diff --git a/blk_kprobe.c b/blk_kprobe.c
new file mode 100644
index 0000000..5403394
--- /dev/null
+++ b/blk_kprobe.c
@@ -0,0 +1,55 @@
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/kprobes.h>
+#include <linux/bio.h>
+#include <linux/bvec.h>
+#include <linux/blkdev.h>
+
+static int submit_bio_pre(struct kprobe *p, struct pt_regs *regs) {
+    struct bio *bio = (struct bio *)regs->di;
+    struct bio_vec bvec;
+    struct bvec_iter iter;
+
+    printk(KERN_INFO "submit_bio: bi_vec: bi_vcnt is %d, operation is %s\n", bio->bi_vcnt, blk_op_str(bio_op(bio)));
+    bio_for_each_bvec(bvec, bio, iter) {
+        printk(KERN_INFO "    idx=%d, sector=%lld, size=%d, done=%d, bv_page=0x%lx, bv_len=%u, bv_offset=%u\n",
+               iter.bi_idx, iter.bi_sector, iter.bi_size, iter.bi_bvec_done, (unsigned long)bvec.bv_page, bvec.bv_len, bvec.bv_offset);
+    }
+
+    if (bio->bi_vcnt != 1)
+    	dump_stack();
+
+    return 0;
+}
+
+static struct kprobe submit_bio_kp = {
+    .symbol_name = "submit_bio",
+    .pre_handler = submit_bio_pre,
+};
+
+static struct kprobe *kprobes[] = {
+    &submit_bio_kp,
+};
+
+static int __init kprobe_init(void) {
+    int ret;
+
+    ret = register_kprobes(kprobes, ARRAY_SIZE(kprobes));
+    if (ret < 0) {
+        printk(KERN_INFO "kprobe registration failed\n");
+        return ret;
+    }
+    printk(KERN_INFO "kprobemodule loaded\n");
+
+    return 0;
+}
+
+static void __exit kprobe_exit(void) {
+    unregister_kprobes(kprobes, ARRAY_SIZE(kprobes));
+    printk(KERN_INFO "kprobemodule unloaded\n");
+}
+
+module_init(kprobe_init);
+module_exit(kprobe_exit);
+MODULE_LICENSE("GPL");
+