linux-kernel - [PATCH 3/5] procfs: fix double drop_sysctl

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Date:   Wed,  5 Dec 2018 20:56:28 +0800
From:   Yafang Shao <laoar.shao@...il.com>
To:     pablo@...filter.org, kadlec@...ckhole.kfki.hu, fw@...len.de,
        davem@...emloft.net, adobriyan@...il.com, akpm@...ux-foundation.org
Cc:     netfilter-devel@...r.kernel.org, coreteam@...filter.org,
        netdev@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, Yafang Shao <laoar.shao@...il.com>
Subject: [PATCH 3/5] procfs: fix double drop_sysctl_table()

All of the callers will execute drop_sysctl_table() whatever the callee
insert_header() successes or fails.
So we can't execute drop_sysctl_table() in insert_header().

Signed-off-by: Yafang Shao <laoar.shao@...il.com>
---
 fs/proc/proc_sysctl.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index 89921a0..9aeb750 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -241,7 +241,6 @@ static int insert_header(struct ctl_dir *dir, struct ctl_table_header *header)
 	if (header->ctl_table == sysctl_mount_point)
 		clear_empty_dir(dir);
 	header->parent = NULL;
-	drop_sysctl_table(&dir->header);
 	return err;
 }
 
-- 
1.8.3.1