提交 c032bfcf 编写于 作者: L Lachlan McIlroy 提交者: Niv Sardi

[XFS] fix use after free with external logs or real-time devices

SGI-PV: 983806

SGI-Modid: xfs-linux-melb:xfs-kern:31666a
Signed-off-by: NLachlan McIlroy <lachlan@sgi.com>
Signed-off-by: NChristoph Hellwig <hch@infradead.org>
上级 6a617dd2
......@@ -792,12 +792,14 @@ xfs_close_devices(
struct xfs_mount *mp)
{
if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) {
struct block_device *logdev = mp->m_logdev_targp->bt_bdev;
xfs_free_buftarg(mp->m_logdev_targp);
xfs_blkdev_put(mp->m_logdev_targp->bt_bdev);
xfs_blkdev_put(logdev);
}
if (mp->m_rtdev_targp) {
struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev;
xfs_free_buftarg(mp->m_rtdev_targp);
xfs_blkdev_put(mp->m_rtdev_targp->bt_bdev);
xfs_blkdev_put(rtdev);
}
xfs_free_buftarg(mp->m_ddev_targp);
}
......
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