Add a validation check that the logical size passed via the table line does not exceed MAXIMUM_VDO_LOGICAL_BLOCKS.
Signed-off-by: Bruce Johnston <[email protected]> --- drivers/md/dm-vdo/dm-vdo-target.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/md/dm-vdo/dm-vdo-target.c b/drivers/md/dm-vdo/dm-vdo-target.c index 1065c88a761c..cee6e4edf768 100644 --- a/drivers/md/dm-vdo/dm-vdo-target.c +++ b/drivers/md/dm-vdo/dm-vdo-target.c @@ -792,6 +792,12 @@ static int parse_device_config(int argc, char **argv, struct dm_target *ti, struct device_config *config = NULL; int result; + if (logical_bytes > (MAXIMUM_VDO_LOGICAL_BLOCKS * VDO_BLOCK_SIZE)) { + handle_parse_error(config, error_ptr, + "Logical size exceeds the maximum"); + return VDO_BAD_CONFIGURATION; + } + if ((logical_bytes % VDO_BLOCK_SIZE) != 0) { handle_parse_error(config, error_ptr, "Logical size must be a multiple of 4096"); -- 2.52.0
