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| author | Jan Kara <jack@suse.cz> | 2013-01-23 13:56:18 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-02-03 18:24:40 -0600 |
| commit | dc28035ca92964adadd7cc1ea286a32b4f194257 (patch) | |
| tree | bc76caca325d5ae5dacb6961b0eed7b8715917eb | |
| parent | 6f92e64724f5ffbfd114b33ece087b00c7400ce5 (diff) | |
| download | linux-3.10-dc28035ca92964adadd7cc1ea286a32b4f194257.tar.gz linux-3.10-dc28035ca92964adadd7cc1ea286a32b4f194257.tar.bz2 linux-3.10-dc28035ca92964adadd7cc1ea286a32b4f194257.zip | |
xfs: Fix possible use-after-free with AIO
commit 4b05d09c18d9aa62d2e7fb4b057f54e5a38963f5 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>
CC: xfs@oss.sgi.com
CC: Ben Myers <bpm@sgi.com>
Reviewed-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | fs/xfs/xfs_aops.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c index 0dbb9e70fe2..7a978c7be84 100644 --- a/fs/xfs/xfs_aops.c +++ b/fs/xfs/xfs_aops.c @@ -89,11 +89,11 @@ xfs_destroy_ioend( } if (ioend->io_iocb) { + inode_dio_done(ioend->io_inode); if (ioend->io_isasync) { aio_complete(ioend->io_iocb, ioend->io_error ? ioend->io_error : ioend->io_result, 0); } - inode_dio_done(ioend->io_inode); } mempool_free(ioend, xfs_ioend_pool); |