From: Cyrill Gorcunov <gorcunov@openvz.org>
To: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org
Cc: Al Viro <viro@zeniv.linux.org.uk>,
Alexey Dobriyan <adobriyan@gmail.com>,
Andrew Morton <akpm@linux-foundation.org>,
Pavel Emelyanov <xemul@parallels.com>,
James Bottomley <jbottomley@parallels.com>,
Matthew Helsley <matt.helsley@gmail.com>,
aneesh.kumar@linux.vnet.ibm.com, bfields@fieldses.org,
Cyrill Gorcunov <gorcunov@openvz.org>,
Al Viro <viro@zeniv.linux.org.uk>
Subject: [patch 4/9] fs, exportfs: Fix nil dereference if no s_export_op present
Date: Thu, 23 Aug 2012 14:43:27 +0400 [thread overview]
Message-ID: <20120823104725.830795272@openvz.org> (raw)
In-Reply-To: 20120823104323.040550004@openvz.org
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If there is no s_export_op present in a target superblock
we might have nil dereference. Fix it with eplicit test
if s_export_op is provided.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
CC: Pavel Emelyanov <xemul@parallels.com>
CC: Al Viro <viro@ZenIV.linux.org.uk>
CC: Alexey Dobriyan <adobriyan@gmail.com>
CC: Andrew Morton <akpm@linux-foundation.org>
CC: James Bottomley <jbottomley@parallels.com>
CC: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
CC: Alexey Dobriyan <adobriyan@gmail.com>
CC: Matthew Helsley <matt.helsley@gmail.com>
CC: "J. Bruce Fields" <bfields@fieldses.org>
CC: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
---
fs/exportfs/expfs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Index: linux-2.6.git/fs/exportfs/expfs.c
===================================================================
--- linux-2.6.git.orig/fs/exportfs/expfs.c
+++ linux-2.6.git/fs/exportfs/expfs.c
@@ -357,7 +357,7 @@ int exportfs_encode_fh(struct dentry *de
*/
parent = p->d_inode;
}
- if (nop->encode_fh)
+ if (nop && nop->encode_fh)
error = nop->encode_fh(inode, fid->raw, max_len, parent);
else
error = export_encode_fh(inode, fid, max_len, parent);
next prev parent reply other threads:[~2012-08-23 10:49 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-08-23 10:43 [patch 0/9] extended fdinfo via procfs series, v7 Cyrill Gorcunov
2012-08-23 10:43 ` [patch 1/9] procfs: Move /proc/pid/fd[info] handling code to fd.[ch] Cyrill Gorcunov
2012-08-25 17:16 ` Al Viro
2012-08-25 17:39 ` Cyrill Gorcunov
2012-08-25 17:55 ` Al Viro
2012-08-25 18:58 ` Cyrill Gorcunov
2012-08-25 19:12 ` Al Viro
2012-08-25 19:43 ` Cyrill Gorcunov
2012-08-25 21:52 ` Al Viro
2012-08-25 23:19 ` Al Viro
2012-08-23 10:43 ` [patch 2/9] procfs: Convert /proc/pid/fdinfo/ handling routines to seq-file v2 Cyrill Gorcunov
2012-08-26 2:46 ` Al Viro
2012-08-26 8:13 ` Cyrill Gorcunov
2012-08-26 14:28 ` Cyrill Gorcunov
2012-08-26 15:05 ` Al Viro
2012-08-26 15:10 ` Cyrill Gorcunov
2012-08-23 10:43 ` [patch 3/9] procfs: Add ability to plug in auxiliary fdinfo providers Cyrill Gorcunov
2012-08-23 10:43 ` Cyrill Gorcunov [this message]
2012-08-23 12:12 ` [patch 4/9] fs, exportfs: Fix nil dereference if no s_export_op present J. Bruce Fields
2012-08-23 12:34 ` Cyrill Gorcunov
2012-08-23 15:22 ` J. Bruce Fields
2012-08-23 10:43 ` [patch 5/9] fs, notify: Add file handle entry into inotify_inode_mark Cyrill Gorcunov
2012-08-23 10:43 ` [patch 6/9] fs, notify: Add procfs fdinfo helper v4 Cyrill Gorcunov
2012-08-23 10:43 ` [patch 7/9] fs, eventfd: Add procfs fdinfo helper Cyrill Gorcunov
2012-08-23 10:43 ` [patch 8/9] fs, epoll: Add procfs fdinfo helper v2 Cyrill Gorcunov
2012-08-23 10:43 ` [patch 9/9] fdinfo: Show sigmask for signalfd fd v2 Cyrill Gorcunov
2012-08-23 12:23 ` [patch 0/9] extended fdinfo via procfs series, v7 J. Bruce Fields
2012-08-23 12:44 ` Cyrill Gorcunov
2012-08-23 13:52 ` J. Bruce Fields
2012-08-23 13:56 ` Cyrill Gorcunov
2012-08-23 15:25 ` J. Bruce Fields
2012-08-23 17:02 ` Cyrill Gorcunov
2012-08-23 17:59 ` J. Bruce Fields
2012-08-23 18:03 ` Cyrill Gorcunov
2012-08-23 17:28 ` Cyrill Gorcunov
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