The patch titled Subject: device-dax: correct pgoff align in dax_set_mapping() has been added to the -mm mm-hotfixes-unstable branch. Its filename is device-dax-correct-pgoff-align-in-dax_set_mapping.patch

This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches...

This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------ From: "Kun(llfl)" llfl@linux.alibaba.com Subject: device-dax: correct pgoff align in dax_set_mapping() Date: Fri, 27 Sep 2024 15:45:09 +0800

pgoff should be aligned using ALIGN_DOWN() instead of ALIGN(). Otherwise, vmf->address not aligned to fault_size will be aligned to the next alignment, that can result in memory failure getting the wrong address.

Link: https://lkml.kernel.org/r/23c02a03e8d666fef11bbe13e85c69c8b4ca0624.172742169... Fixes: b9b5777f09be ("device-dax: use ALIGN() for determining pgoff") Signed-off-by: Kun(llfl) llfl@linux.alibaba.com Tested-by: JianXiong Zhao zhaojianxiong.zjx@alibaba-inc.com Cc: Joao Martins joao.m.martins@oracle.com Cc: Dan Williams dan.j.williams@intel.com Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org ---

drivers/dax/device.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/dax/device.c~device-dax-correct-pgoff-align-in-dax_set_mapping +++ a/drivers/dax/device.c @@ -86,7 +86,7 @@ static void dax_set_mapping(struct vm_fa nr_pages = 1;

pgoff = linear_page_index(vmf->vma, - ALIGN(vmf->address, fault_size)); + ALIGN_DOWN(vmf->address, fault_size));

for (i = 0; i < nr_pages; i++) { struct page *page = pfn_to_page(pfn_t_to_pfn(pfn) + i); _

Patches currently in -mm which might be from llfl@linux.alibaba.com are

device-dax-correct-pgoff-align-in-dax_set_mapping.patch