[PATCH v4 3/9] uprobes: simplify error handling for alloc_uprobe()

[Oleg Nesterov]

From: Andrii Nakryiko <andrii@xxxxxxxxxx>

Return -ENOMEM instead of NULL, which makes caller's error handling just
a touch simpler.

Signed-off-by: Andrii Nakryiko <andrii@xxxxxxxxxx>
Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@xxxxxxxxxx>
Reviewed-by: Jiri Olsa <jolsa@xxxxxxxxxx>
---
 kernel/events/uprobes.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index eb71428691bb..dfe6306a63b1 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -725,7 +725,7 @@ static struct uprobe *alloc_uprobe(struct inode *inode, loff_t offset,
 
 	uprobe = kzalloc(sizeof(struct uprobe), GFP_KERNEL);
 	if (!uprobe)
-		return NULL;
+		return ERR_PTR(-ENOMEM);
 
 	uprobe->inode = inode;
 	uprobe->offset = offset;
@@ -1167,8 +1167,6 @@ static int __uprobe_register(struct inode *inode, loff_t offset,
 
  retry:
 	uprobe = alloc_uprobe(inode, offset, ref_ctr_offset);
-	if (!uprobe)
-		return -ENOMEM;
 	if (IS_ERR(uprobe))
 		return PTR_ERR(uprobe);
 
-- 
2.25.1.362.g51ebf55