[PATCH v2 3/5] uprobes: simplify error handling for alloc_uprobe()

Oleg Nesterov
2024-07-29T13:45:34Z

From: Andrii Nakryiko <andrii@kernel.org>

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

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
---
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