3.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx> commit aa179935edea9a64dec4b757090c8106a3907ffa upstream. This patch adds a check to sbc_parse_cdb() in order to detect when an LBA + sector vs. end-of-device calculation wraps when the LBA is sufficently large enough (eg: 0xFFFFFFFFFFFFFFFF). Cc: Martin Petersen <martin.petersen@xxxxxxxxxx> Cc: Christoph Hellwig <hch@xxxxxx> Signed-off-by: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/target/target_core_sbc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/target/target_core_sbc.c +++ b/drivers/target/target_core_sbc.c @@ -562,7 +562,8 @@ sbc_parse_cdb(struct se_cmd *cmd, struct unsigned long long end_lba; end_lba = dev->transport->get_blocks(dev) + 1; - if (cmd->t_task_lba + sectors > end_lba) { + if (((cmd->t_task_lba + sectors) < cmd->t_task_lba) || + ((cmd->t_task_lba + sectors) > end_lba)) { pr_err("cmd exceeds last lba %llu " "(lba %llu, sectors %u)\n", end_lba, cmd->t_task_lba, sectors); -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html