[patch 43/45] struct file leakage

Greg KH
2006-07-17T16:43:52Z

[-- Attachment #1: struct-file-leakage.patch --]
[-- Type: text/plain, Size: 1382 bytes --]

-stable review patch. If anyone has any objections, please let us know.

------------------
From: Kirill Korotaev <dev@sw.ru>

2.6.16 leaks like hell. While testing, I found massive leakage
(reproduced in openvz) in:

*filp
*size-4096

And 1 object leaks in
*size-32
*size-64
*size-128

It is the fix for the first one. filp leaks in the bowels of namei.c.

Seems, size-4096 is file table leaking in expand_fdtables.

I have no idea what are the rest and why they show only accompanying
another leaks. Some debugging structs?

[akpm@osdl.org, Trond: remove the IS_ERR() check]
Signed-off-by: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru>
Cc: Kirill Korotaev <dev@openvz.org>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
fs/namei.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)

--- linux-2.6.17.6.orig/fs/namei.c
+++ linux-2.6.17.6/fs/namei.c
@@ -1712,8 +1712,14 @@ do_link:
if (error)
goto exit_dput;
error = __do_follow_link(&path, nd);
- if (error)
+ if (error) {
+ /* Does someone understand code flow here? Or it is only
+ * me so stupid? Anathema to whoever designed this non-sense
+ * with "intent.open".
+ */
+ release_open_intent(nd);
return error;
+ }
nd->flags &= ~LOOKUP_PARENT;
if (nd->last_type == LAST_BIND)
goto ok;

--