[PATCH] v9fs-get-sb-cleanup.patch

From: Latchesar Ionkov
Date: Tue Sep 20 2005 - 20:25:46 EST


Signed-off-by: Latchesar Ionkov <lucho@xxxxxxxxxx>

if error occurs while in v9fs_get_sb, some objects are freed twice -- once
in v9fs_get_sb, the second time when v9fs_kill_super is (indirectly
called).

---
commit f3f3a1deaaf88410ab71e9cf806c440d66103fad
tree d2e9deb7d763fc10eba2ef23ff90640f1c21f1f6
parent 0b381cf7efcd34bb6b316baf7ed5d18d402e62f0
author Latchesar Ionkov <lucho@xxxxxxxxxx> Tue, 20 Sep 2005 19:33:39 -0400
committer Latchesar Ionkov <lucho@xxxxxxxxxx> Tue, 20 Sep 2005 19:33:39 -0400

fs/9p/vfs_super.c | 24 +++++++-----------------
1 files changed, 7 insertions(+), 17 deletions(-)

diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -129,8 +129,8 @@ static struct super_block *v9fs_get_sb(s

if ((newfid = v9fs_session_init(v9ses, dev_name, data)) < 0) {
dprintk(DEBUG_ERROR, "problem initiating session\n");
- retval = newfid;
- goto free_session;
+ kfree(v9ses);
+ return ERR_PTR(newfid);
}

sb = sget(fs_type, NULL, v9fs_set_super, v9ses);
@@ -150,7 +150,7 @@ static struct super_block *v9fs_get_sb(s

if (!root) {
retval = -ENOMEM;
- goto release_inode;
+ goto put_back_sb;
}

sb->s_root = root;
@@ -159,7 +159,7 @@ static struct super_block *v9fs_get_sb(s
root_fid = v9fs_fid_create(root);
if (root_fid == NULL) {
retval = -ENOMEM;
- goto release_dentry;
+ goto put_back_sb;
}

root_fid->fidopen = 0;
@@ -182,25 +182,15 @@ static struct super_block *v9fs_get_sb(s

if (stat_result < 0) {
retval = stat_result;
- goto release_dentry;
+ goto put_back_sb;
}

return sb;

- release_dentry:
- dput(sb->s_root);
-
- release_inode:
- iput(inode);
-
- put_back_sb:
+put_back_sb:
+ /* deactivate_super calls v9fs_kill_super which will frees the rest */
up_write(&sb->s_umount);
deactivate_super(sb);
- v9fs_session_close(v9ses);
-
- free_session:
- kfree(v9ses);
-
return ERR_PTR(retval);
}

-
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