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xfs: shut down the filesystem if we screw up quota reservation

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commit 2a4bdfa855 upstream.

If we ever screw up the quota reservations enough to trip the
assertions, something's wrong with the quota code.  Shut down the
filesystem when this happens, because this is corruption.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Acked-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Darrick J. Wong
2023-03-28 10:35:11 +03:00
committed by Greg Kroah-Hartman
parent 91d7a4bd56
commit cb61e1e36f
1 changed files with 10 additions and 3 deletions
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13
fs/xfs/xfs_trans_dquot.c
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@@ -16,6 +16,7 @@
#include "xfs_quota.h"
#include "xfs_qm.h"
#include "xfs_trace.h"
#include "xfs_error.h"
STATIC void xfs_trans_alloc_dqinfo(xfs_trans_t *);
@@ -708,9 +709,11 @@ xfs_trans_dqresv(
XFS_TRANS_DQ_RES_INOS,
ninos);
}
ASSERT(dqp->q_blk.reserved >= dqp->q_blk.count);
ASSERT(dqp->q_rtb.reserved >= dqp->q_rtb.count);
ASSERT(dqp->q_ino.reserved >= dqp->q_ino.count);
if (XFS_IS_CORRUPT(mp, dqp->q_blk.reserved < dqp->q_blk.count) ||
XFS_IS_CORRUPT(mp, dqp->q_rtb.reserved < dqp->q_rtb.count) ||
XFS_IS_CORRUPT(mp, dqp->q_ino.reserved < dqp->q_ino.count))
goto error_corrupt;
xfs_dqunlock(dqp);
return 0;
@@ -720,6 +723,10 @@ error_return:
if (xfs_dquot_type(dqp) == XFS_DQTYPE_PROJ)
return -ENOSPC;
return -EDQUOT;
error_corrupt:
xfs_dqunlock(dqp);
xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
return -EFSCORRUPTED;
}