[PATCH] s390/raw3270: handle memory allocation failure in 'raw3270_setup_console()'
From: yskelg
Date: Sun Jun 23 2024 - 08:25:52 EST
From: Yunseong Kim <yskelg@xxxxxxxxx>
This patch handle potential null pointer dereference in
'raw3270_setup_device()', When 'raw3270_setup_console()' fails to
allocate memory for 'rp' or 'ascebc'.
Signed-off-by: Yunseong Kim <yskelg@xxxxxxxxx>
---
drivers/s390/char/raw3270.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/s390/char/raw3270.c b/drivers/s390/char/raw3270.c
index c57694be9bd3..4e81040eea81 100644
--- a/drivers/s390/char/raw3270.c
+++ b/drivers/s390/char/raw3270.c
@@ -812,7 +812,13 @@ struct raw3270 __init *raw3270_setup_console(void)
return ERR_CAST(cdev);
rp = kzalloc(sizeof(*rp), GFP_KERNEL | GFP_DMA);
+ if (!rp)
+ return ERR_PTR(-ENOMEM);
ascebc = kzalloc(256, GFP_KERNEL);
+ if (!ascebc) {
+ kfree(rp);
+ return ERR_PTR(-ENOMEM);
+ }
rc = raw3270_setup_device(cdev, rp, ascebc);
if (rc)
return ERR_PTR(rc);
--
2.45.2