From: Paolo 'Blaisorblade' Giarrusso <[EMAIL PROTECTED]>
Fix double free in the error path - when name is assigned into root_inode we do
not own it any more and we must not kfree() it - see patch for details.
Thanks to William Stearns for the initial report.
CC: William Stearns <[EMAIL PROTECTED]>
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <[EMAIL PROTECTED]>
---
fs/hostfs/hostfs_kern.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
index e965eb1..6f10e43 100644
--- a/fs/hostfs/hostfs_kern.c
+++ b/fs/hostfs/hostfs_kern.c
@@ -966,6 +966,9 @@ static int hostfs_fill_sb_common(struct super_block *sb,
void *d, int silent)
goto out_put;
HOSTFS_I(root_inode)->host_filename = name;
+ /* Avoid that in the error path, iput(root_inode) frees again name
through
+ * hostfs_destroy_inode! */
+ name = NULL;
err = -ENOMEM;
sb->s_root = d_alloc_root(root_inode);
@@ -977,7 +980,7 @@ static int hostfs_fill_sb_common(struct super_block *sb,
void *d, int silent)
/* No iput in this case because the dput does that for us */
dput(sb->s_root);
sb->s_root = NULL;
- goto out_free;
+ goto out;
}
return(0);
-------------------------------------------------------------------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share your
opinions on IT & business topics through brief surveys-and earn cash
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
_______________________________________________
User-mode-linux-devel mailing list
User-mode-linux-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
