X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=drivers%2Fblock%2Fnull_blk.c;h=3107282a9741f96665a2805b08217d3209c27bf7;hb=53d8ab29f8f6d67e37857b68189b38fa3d87dd8e;hp=83a598ebb65a4ab7699d1dcebe1b44b42ea8ae5a;hpb=36e66bf84ff0a9dd7f167a2a1031c6fe9ecd436a;p=~andy%2Flinux

diff --git a/drivers/block/null_blk.c b/drivers/block/null_blk.c
index 83a598ebb65..3107282a974 100644
--- a/drivers/block/null_blk.c
+++ b/drivers/block/null_blk.c
@@ -616,6 +616,11 @@ static int __init null_init(void)
 		irqmode = NULL_IRQ_NONE;
 	}
 #endif
+	if (bs > PAGE_SIZE) {
+		pr_warn("null_blk: invalid block size\n");
+		pr_warn("null_blk: defaults block size to %lu\n", PAGE_SIZE);
+		bs = PAGE_SIZE;
+	}
 
 	if (queue_mode == NULL_Q_MQ && use_per_node_hctx) {
 		if (submit_queues < nr_online_nodes) {