change system file

hc

2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771

 kernel/kernel/relay.c
..
..
@@ -163,13 +163,13 @@
163
163
 {
164
164
 	struct rchan_buf *buf;
165
165
 
166
-	if (chan->n_subbufs > KMALLOC_MAX_SIZE / sizeof(size_t *))
166
+	if (chan->n_subbufs > KMALLOC_MAX_SIZE / sizeof(size_t))
167
167
 		return NULL;
168
168
 
169
169
 	buf = kzalloc(sizeof(struct rchan_buf), GFP_KERNEL);
170
170
 	if (!buf)
171
171
 		return NULL;
172
-	buf->padding = kmalloc_array(chan->n_subbufs, sizeof(size_t *),
172
+	buf->padding = kmalloc_array(chan->n_subbufs, sizeof(size_t),
173
173
 				     GFP_KERNEL);
174
174
 	if (!buf->padding)
175
175
 		goto free_buf;
..
..
@@ -1077,7 +1077,8 @@
1077
1077
 	size_t subbuf_size = buf->chan->subbuf_size;
1078
1078
 	size_t n_subbufs = buf->chan->n_subbufs;
1079
1079
 	size_t consumed = buf->subbufs_consumed % n_subbufs;
1080
-	size_t read_pos = consumed * subbuf_size + buf->bytes_consumed;
1080
+	size_t read_pos = (consumed * subbuf_size + buf->bytes_consumed)
1081
+			% (n_subbufs * subbuf_size);
1081
1082
 
1082
1083
 	read_subbuf = read_pos / subbuf_size;
1083
1084
 	padding = buf->padding[read_subbuf];