Merge branch 'topic/compress-accel' into for-next

Pull compress-offload API extension for accel operation mode

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 17 insertions, 19 deletions

diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c
index a582cd25ca87..3bd402fa62a4 100644
--- a/kernel/trace/bpf_trace.c
+++ b/kernel/trace/bpf_trace.c
@@ -3133,7 +3133,8 @@ static int bpf_uprobe_multi_link_fill_link_info(const struct bpf_link *link,
 	struct bpf_uprobe_multi_link *umulti_link;
 	u32 ucount = info->uprobe_multi.count;
 	int err = 0, i;
-	long left;
+	char *p, *buf;
+	long left = 0;
 
 	if (!upath ^ !upath_size)
 		return -EINVAL;
@@ -3147,26 +3148,23 @@ static int bpf_uprobe_multi_link_fill_link_info(const struct bpf_link *link,
 	info->uprobe_multi.pid = umulti_link->task ?
 				 task_pid_nr_ns(umulti_link->task, task_active_pid_ns(current)) : 0;
 
-	if (upath) {
-		char *p, *buf;
-
-		upath_size = min_t(u32, upath_size, PATH_MAX);
-
-		buf = kmalloc(upath_size, GFP_KERNEL);
-		if (!buf)
-			return -ENOMEM;
-		p = d_path(&umulti_link->path, buf, upath_size);
-		if (IS_ERR(p)) {
-			kfree(buf);
-			return PTR_ERR(p);
-		}
-		upath_size = buf + upath_size - p;
-		left = copy_to_user(upath, p, upath_size);
+	upath_size = upath_size ? min_t(u32, upath_size, PATH_MAX) : PATH_MAX;
+	buf = kmalloc(upath_size, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+	p = d_path(&umulti_link->path, buf, upath_size);
+	if (IS_ERR(p)) {
 		kfree(buf);
-		if (left)
-			return -EFAULT;
-		info->uprobe_multi.path_size = upath_size;
+		return PTR_ERR(p);
 	}
+	upath_size = buf + upath_size - p;
+
+	if (upath)
+		left = copy_to_user(upath, p, upath_size);
+	kfree(buf);
+	if (left)
+		return -EFAULT;
+	info->uprobe_multi.path_size = upath_size;
 
 	if (!uoffsets && !ucookies && !uref_ctr_offsets)
 		return 0;