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ocfs2: fix possible use-after-free with AIO

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commit 9b171e0c74 upstream.

Running AIO is pinning inode in memory using file reference. Once AIO
is completed using aio_complete(), file reference is put and inode can
be freed from memory. So we have to be sure that calling aio_complete()
is the last thing we do with the inode.

Signed-off-by: Jan Kara <jack@suse.cz>
Acked-by: Jeff Moyer <jmoyer@redhat.com>
Acked-by: Joel Becker <jlbec@evilplan.org>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jan Kara 2013-02-20 13:16:39 +11:00 committed by Greg Kroah-Hartman
parent 316857e5fe
commit fa1c19bbbd
1 changed files with 1 additions and 1 deletions
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2
fs/ocfs2/aops.c
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@ -593,9 +593,9 @@ static void ocfs2_dio_end_io(struct kiocb *iocb,
level = ocfs2_iocb_rw_locked_level(iocb);
ocfs2_rw_unlock(inode, level);
inode_dio_done(inode);
if (is_async)
aio_complete(iocb, ret, 0);
inode_dio_done(inode);
}
/*