diff --git a/module/zfs/zio.c b/module/zfs/zio.c
index a5daf73d59ba..3c7305e0e724 100644
--- a/module/zfs/zio.c
+++ b/module/zfs/zio.c
@@ -187,6 +187,20 @@ zio_init(void)
 			continue;
 #endif
 
+#if defined(__linux__) && defined(_KERNEL)
+		/*
+		 * Workaround issue of Linux vdev_disk.c, in some cases not
+		 * linearizing buffers with disk sector crossing a page
+		 * boundary. It is fine for hardware, but somehow required by
+		 * LUKS. It is not typical for ZFS to produce such buffers, but
+		 * it may happen if 6KB block is compressed to 4KB, while still
+		 * having 2KB alignment. Banning the 6KB buffers helps vdevs
+		 * with ashifh=12.
+		 */
+		if (size > PAGESIZE && !IS_P2ALIGNED(size, PAGESIZE))
+			continue;
+#endif
+
 		if (IS_P2ALIGNED(size, PAGESIZE))
 			align = PAGESIZE;
 		else