fs/notify: don't show f_handle if exportfs_encode_inode_fh failed

commit 7e8824816bda16bb11ff5ff1e1212d642e57b0b3 upstream.

Currently we handle only ENOSPC.  In case of other errors the file_handle
variable isn't filled properly and we will show a part of stack.

Signed-off-by: Andrey Vagin <avagin@openvz.org>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/notify/fdinfo.c b/fs/notify/fdinfo.c
index 660d33bc1befb8f2824abe5fe0207f710eed116c..9d7e2b9659cbdf2687e26bbbf0dc784ba7cced6d 100644 (file)
--- a/fs/notify/fdinfo.c
+++ b/fs/notify/fdinfo.c
@@ -50,7 +50,7 @@ static int show_mark_fhandle(struct seq_file *m, struct inode *inode)
        size = f.handle.handle_bytes >> 2;
 
        ret = exportfs_encode_inode_fh(inode, (struct fid *)f.handle.f_handle, &size, 0);
-       if ((ret == FILEID_INVALID) || (ret == -ENOSPC)) {
+       if ((ret == FILEID_INVALID) || (ret < 0)) {
                WARN_ONCE(1, "Can't encode file handler for inotify: %d\n", ret);
                return 0;
        }