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xfs: scrub in-core metadata

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Whenever we load a buffer, explicitly re-call the structure verifier to
ensure that memory isn't corrupting things.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
This commit is contained in:
Darrick J. Wong
2018-01-16 18:53:11 -08:00
parent 561f648ab2
commit cf1b0b8b1a
6 changed files with 57 additions and 0 deletions
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4
fs/xfs/scrub/dir.c
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@@ -237,6 +237,7 @@ xfs_scrub_dir_rec(
xfs_scrub_fblock_set_corrupt(ds->sc, XFS_DATA_FORK, rec_bno);
goto out;
}
xfs_scrub_buffer_recheck(ds->sc, bp);
/* Retrieve the entry, sanity check it, and compare hashes. */
dent = (struct xfs_dir2_data_entry *)(((char *)bp->b_addr) + off);
@@ -324,6 +325,7 @@ xfs_scrub_directory_data_bestfree(
}
if (!xfs_scrub_fblock_process_error(sc, XFS_DATA_FORK, lblk, &error))
goto out;
xfs_scrub_buffer_recheck(sc, bp);
/* XXX: Check xfs_dir3_data_hdr.pad is zero once we start setting it. */
@@ -474,6 +476,7 @@ xfs_scrub_directory_leaf1_bestfree(
error = xfs_dir3_leaf_read(sc->tp, sc->ip, lblk, -1, &bp);
if (!xfs_scrub_fblock_process_error(sc, XFS_DATA_FORK, lblk, &error))
goto out;
xfs_scrub_buffer_recheck(sc, bp);
leaf = bp->b_addr;
d_ops->leaf_hdr_from_disk(&leafhdr, leaf);
@@ -559,6 +562,7 @@ xfs_scrub_directory_free_bestfree(
error = xfs_dir2_free_read(sc->tp, sc->ip, lblk, &bp);
if (!xfs_scrub_fblock_process_error(sc, XFS_DATA_FORK, lblk, &error))
goto out;
xfs_scrub_buffer_recheck(sc, bp);
if (xfs_sb_version_hascrc(&sc->mp->m_sb)) {
struct xfs_dir3_free_hdr *hdr3 = bp->b_addr;