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

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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>
This commit is contained in:
Darrick J. Wong 2021-01-29 15:44:32 -08:00
parent fea7aae6ce
commit 2a4bdfa855
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 *);
@ -691,9 +692,11 @@ xfs_trans_dqresv(
nblks);
xfs_trans_mod_dquot(tp, dqp, 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;
@ -703,6 +706,10 @@ 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;
}