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Commit c032bfcf authored by Lachlan McIlroy's avatar Lachlan McIlroy Committed by Niv Sardi
Browse files

[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: default avatarLachlan McIlroy <lachlan@sgi.com>
Signed-off-by: default avatarChristoph Hellwig <hch@infradead.org>
parent 6a617dd2

fs/xfs/linux-2.6/xfs_super.c

+4 −2
Original line number Diff line number Diff line
@@ -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);

}