[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: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: Christoph Hellwig <hch@infradead.org>
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@ -792,12 +792,14 @@ xfs_close_devices(
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struct xfs_mount *mp)
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{
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if (mp->m_logdev_targp && mp->m_logdev_targp != mp->m_ddev_targp) {
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struct block_device *logdev = mp->m_logdev_targp->bt_bdev;
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xfs_free_buftarg(mp->m_logdev_targp);
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xfs_blkdev_put(mp->m_logdev_targp->bt_bdev);
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xfs_blkdev_put(logdev);
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}
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if (mp->m_rtdev_targp) {
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struct block_device *rtdev = mp->m_rtdev_targp->bt_bdev;
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xfs_free_buftarg(mp->m_rtdev_targp);
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xfs_blkdev_put(mp->m_rtdev_targp->bt_bdev);
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xfs_blkdev_put(rtdev);
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}
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xfs_free_buftarg(mp->m_ddev_targp);
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}
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