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    Subject[PATCH 5.10 632/717] jfs: Fix array index bounds check in dbAdjTree
    Date
    From: Dave Kleikamp <dave.kleikamp@oracle.com>

    commit c61b3e4839007668360ed8b87d7da96d2e59fc6c upstream.

    Bounds checking tools can flag a bug in dbAdjTree() for an array index
    out of bounds in dmt_stree. Since dmt_stree can refer to the stree in
    both structures dmaptree and dmapctl, use the larger array to eliminate
    the false positive.

    Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
    Reported-by: butt3rflyh4ck <butterflyhuangxx@gmail.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    fs/jfs/jfs_dmap.h | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/fs/jfs/jfs_dmap.h
    +++ b/fs/jfs/jfs_dmap.h
    @@ -183,7 +183,7 @@ typedef union dmtree {
    #define dmt_leafidx t1.leafidx
    #define dmt_height t1.height
    #define dmt_budmin t1.budmin
    -#define dmt_stree t1.stree
    +#define dmt_stree t2.stree

    /*
    * on-disk aggregate disk allocation map descriptor.

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