linux-kernel - [PATCH 3/9] um: Do not propagate uml

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: Windows password security audit tool. GUI, reports in PDF.

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

Message-Id: <20241011040441.1586345-4-tiwei.btw@antgroup.com>
Date: Fri, 11 Oct 2024 12:04:35 +0800
From: "Tiwei Bie" <tiwei.btw@...group.com>
To: richard@....at,
	anton.ivanov@...bridgegreys.com,
	johannes@...solutions.net
Cc:  <linux-um@...ts.infradead.org>,
   <linux-kernel@...r.kernel.org>,
  "Tiwei Bie" <tiwei.btw@...group.com>
Subject: [PATCH 3/9] um: Do not propagate uml_dir parameter to kernel

This parameter is UML specific and is unknown to kernel. It should not
be propagated to kernel, otherwise it will be passed to user space as
an environment option by kernel with a warning like:

Unknown kernel command line parameters "uml_dir=/foo", will be passed to user space.

Signed-off-by: Tiwei Bie <tiwei.btw@...group.com>
---
 arch/um/os-Linux/umid.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/um/os-Linux/umid.c b/arch/um/os-Linux/umid.c
index e09d65b05d1c..eb523ab1e218 100644
--- a/arch/um/os-Linux/umid.c
+++ b/arch/um/os-Linux/umid.c
@@ -358,6 +358,8 @@ char *get_umid(void)
 
 static int __init set_uml_dir(char *name, int *add)
 {
+	*add = 0;
+
 	if (*name == '\0') {
 		os_warn("uml_dir can't be an empty string\n");
 		return 0;
-- 
2.34.1