• K
    block: fix the bio_vec array index out-of-bounds test · af498d7f
    Kazuhisa Ichikawa 提交于
    Current bio_vec array index out-of-bounds test within
    __end_that_request_first() does not seem correct.
    It checks bio->bi_idx against bio->bi_vcnt, but the subsequent code
    uses idx (which is, bio->bi_idx + next_idx) as the array index into
    bio_vec array. This means that the test really make sense only at
    the first iteration of !(nr_bytes >=bio->bi_size) case (when next_idx
    == zero). Fix this by replacing bio->bi_idx with idx.
    (This patch applies to 2.6.30-rc4.)
    Signed-off-by: NKazuhisa Ichikawa <ki@epsilou.com>
    Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
    af498d7f
blk-core.c 58.1 KB