linux-kernel - [PATCH 3/4] uacce: implement mremap in uacce_vm

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250822103904.3776304-4-huangchenghai2@huawei.com>
Date: Fri, 22 Aug 2025 18:39:03 +0800
From: Chenghai Huang <huangchenghai2@...wei.com>
To: <gregkh@...uxfoundation.org>, <zhangfei.gao@...aro.org>,
	<wangzhou1@...ilicon.com>
CC: <linux-kernel@...r.kernel.org>, <linuxarm@...wei.com>,
	<linux-crypto@...r.kernel.org>, <fanghao11@...wei.com>,
	<shenyang39@...wei.com>, <qianweili@...wei.com>, <linwenkai6@...ilicon.com>,
	<liulongfang@...wei.com>
Subject: [PATCH 3/4] uacce: implement mremap in uacce_vm_ops to return -EPERM

From: Yang Shen <shenyang39@...wei.com>

The current uacce_vm_ops does not support the mremap operation of
vm_operations_struct. Implement .mremap to return -EPERM to remind
users

Fixes: 015d239ac014 ("uacce: add uacce driver")
Signed-off-by: Yang Shen <shenyang39@...wei.com>
Signed-off-by: Chenghai Huang <huangchenghai2@...wei.com>
---
 drivers/misc/uacce/uacce.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/misc/uacce/uacce.c b/drivers/misc/uacce/uacce.c
index 6a38809ca819..531a24145ba4 100644
--- a/drivers/misc/uacce/uacce.c
+++ b/drivers/misc/uacce/uacce.c
@@ -214,8 +214,14 @@ static void uacce_vma_close(struct vm_area_struct *vma)
 	}
 }
 
+static int uacce_vma_mremap(struct vm_area_struct *area)
+{
+	return -EPERM;
+}
+
 static const struct vm_operations_struct uacce_vm_ops = {
 	.close = uacce_vma_close,
+	.mremap = uacce_vma_mremap,
 };
 
 static int uacce_fops_mmap(struct file *filep, struct vm_area_struct *vma)
-- 
2.33.0