From: Jeff Dike <jdike@addtoit.com>
Date: Thu, 5 May 2005 23:15:34 +0000 (-0700)
Subject: [PATCH] uml: hostfs failed mount handling
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=51a141104a37369be2822f423ed4444aa34d26a2;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

[PATCH] uml: hostfs failed mount handling

This cleans up the error handling and fixes a crash if a hostfs mount fails.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
index e6c63d9cac7b..14a0d339d036 100644
--- a/fs/hostfs/hostfs_kern.c
+++ b/fs/hostfs/hostfs_kern.c
@@ -991,13 +991,17 @@ static int hostfs_fill_sb_common(struct super_block *sb, void *d, int silent)
 		goto out_put;
 
 	err = read_inode(root_inode);
-	if(err)
-		goto out_put;
+	if(err){
+                /* No iput in this case because the dput does that for us */
+                dput(sb->s_root);
+                sb->s_root = NULL;
+		goto out_free;
+        }
 
 	return(0);
 
  out_put:
-	iput(root_inode);
+        iput(root_inode);
  out_free:
 	kfree(name);
  out: