Re: [PATCH] bcache: Revert "bcache: use bvec_virt"

On Wed, 3 Nov 2021 23:10:41 +0800, Coly Li wrote:

This reverts commit 2fd3e5efe791946be0957c8e1eed9560b541fe46.

The above commit replaces page_address(bv->bv_page) by bvec_virt(bv) to avoid directly access to bv->bv_page, but in situation bv->bv_offset is not zero and page_address(bv->bv_page) is not equal to bvec_virt(bv). In such case a memory corruption may happen because memory in next page is tainted by following line in do_btree_node_write(), memcpy(bvec_virt(bv), addr, PAGE_SIZE);

[...]

Applied, thanks!

[1/1] bcache: Revert "bcache: use bvec_virt" commit: 2878feaed543c35f9dbbe6d8ce36fb67ac803eef

Best regards,