[PATCH] misc: vmw_vmci: fix kernel info-leak by initializing dbells in vmci_ctx_get_chkpt_doorbells()

[Anant Thazhemadam]

A kernel-infoleak was reported by syzbot, which was caused because
dbells was left uninitialized.
Using kzalloc() instead of kmalloc() fixes this issue.

Reported-by: syzbot+a79e17c39564bedf0...@syzkaller.appspotmail.com
Tested-by: syzbot+a79e17c39564bedf0...@syzkaller.appspotmail.com
Signed-off-by: Anant Thazhemadam <anant.thazhema...@gmail.com>
---
 drivers/misc/vmw_vmci/vmci_context.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/misc/vmw_vmci/vmci_context.c 
b/drivers/misc/vmw_vmci/vmci_context.c
index 16695366ec92..26ff49fdf0f7 100644
--- a/drivers/misc/vmw_vmci/vmci_context.c
+++ b/drivers/misc/vmw_vmci/vmci_context.c
@@ -743,7 +743,7 @@ static int vmci_ctx_get_chkpt_doorbells(struct vmci_ctx 
*context,
                        return VMCI_ERROR_MORE_DATA;
                }
 
-               dbells = kmalloc(data_size, GFP_ATOMIC);
+               dbells = kzalloc(data_size, GFP_ATOMIC);
                if (!dbells)
                        return VMCI_ERROR_NO_MEM;
 
-- 
2.25.1