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

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
View File

@ -16,6 +16,7 @@
#include "xfs_quota.h" #include "xfs_quota.h"
#include "xfs_qm.h" #include "xfs_qm.h"
#include "xfs_trace.h" #include "xfs_trace.h"
#include "xfs_error.h"
STATIC void xfs_trans_alloc_dqinfo(xfs_trans_t *); STATIC void xfs_trans_alloc_dqinfo(xfs_trans_t *);
@ -691,9 +692,11 @@ xfs_trans_dqresv(
nblks); nblks);
xfs_trans_mod_dquot(tp, dqp, XFS_TRANS_DQ_RES_INOS, ninos); 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); if (XFS_IS_CORRUPT(mp, dqp->q_blk.reserved < dqp->q_blk.count) ||
ASSERT(dqp->q_ino.reserved >= dqp->q_ino.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); xfs_dqunlock(dqp);
return 0; return 0;
@ -703,6 +706,10 @@ error_return:
if (xfs_dquot_type(dqp) == XFS_DQTYPE_PROJ) if (xfs_dquot_type(dqp) == XFS_DQTYPE_PROJ)
return -ENOSPC; return -ENOSPC;
return -EDQUOT; return -EDQUOT;
error_corrupt:
xfs_dqunlock(dqp);
xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE);
return -EFSCORRUPTED;
} }