From: Tiwei Bie <tiwei.btw@antgroup.com>
Date: Fri, 11 Oct 2024 04:04:38 +0000 (+0800)
Subject: hostfs: Do not propagate hostfs parameter to kernel
X-Git-Tag: v6.13-rc1~18^2~32
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d26627b2c7b50c0b8a5ee3cafa7a3e3913c25a92;p=thirdparty%2Fkernel%2Flinux.git

hostfs: Do not propagate hostfs 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 "hostfs=/foo", will be passed to user space.

Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Link: https://patch.msgid.link/20241011040441.1586345-7-tiwei.btw@antgroup.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---

diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
index 6d1cf2436ead6..8d47c6b70c9f7 100644
--- a/fs/hostfs/hostfs_kern.c
+++ b/fs/hostfs/hostfs_kern.c
@@ -57,6 +57,7 @@ static int __init hostfs_args(char *options, int *add)
 {
 	char *ptr;
 
+	*add = 0;
 	ptr = strchr(options, ',');
 	if (ptr != NULL)
 		*ptr++ = '\0';