This is a note to let you know that I've just added the patch titled
IB/core: disable memory registration of filesystem-dax vmas
to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: ib-core-disable-memory-registration-of-filesystem-dax-vmas.patch and it can be found in the queue-4.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From foo@baz Mon Feb 26 20:55:53 CET 2018
From: Dan Williams dan.j.williams@intel.com Date: Fri, 23 Feb 2018 14:06:00 -0800 Subject: IB/core: disable memory registration of filesystem-dax vmas To: gregkh@linuxfoundation.org Cc: Sean Hefty sean.hefty@intel.com, Jan Kara jack@suse.cz, Joonyoung Shim jy0922.shim@samsung.com, linux-kernel@vger.kernel.org, Seung-Woo Kim sw0312.kim@samsung.com, Jeff Moyer jmoyer@redhat.com, stable@vger.kernel.org, Christoph Hellwig hch@lst.de, Inki Dae inki.dae@samsung.com, Doug Ledford dledford@redhat.com, Jason Gunthorpe jgg@mellanox.com, Mel Gorman mgorman@suse.de, Ross Zwisler ross.zwisler@linux.intel.com, Kyungmin Park kyungmin.park@samsung.com, Andrew Morton akpm@linux-foundation.org, Mauro Carvalho Chehab mchehab@kernel.org, Linus Torvalds torvalds@linux-foundation.org, Hal Rosenstock hal.rosenstock@gmail.com, Vlastimil Babka vbabka@suse.cz Message-ID: 151942356005.21775.11352557058864235434.stgit@dwillia2-desk3.amr.corp.intel.com
From: Dan Williams dan.j.williams@intel.com
commit 5f1d43de54164dcfb9bfa542fcc92c1e1a1b6c1d upstream.
Until there is a solution to the dma-to-dax vs truncate problem it is not safe to allow RDMA to create long standing memory registrations against filesytem-dax vmas.
Link: http://lkml.kernel.org/r/151068941011.7446.7766030590347262502.stgit@dwillia... Fixes: 3565fce3a659 ("mm, x86: get_user_pages() for dax mappings") Signed-off-by: Dan Williams dan.j.williams@intel.com Reported-by: Christoph Hellwig hch@lst.de Reviewed-by: Christoph Hellwig hch@lst.de Acked-by: Jason Gunthorpe jgg@mellanox.com Acked-by: Doug Ledford dledford@redhat.com Cc: Sean Hefty sean.hefty@intel.com Cc: Hal Rosenstock hal.rosenstock@gmail.com Cc: Jeff Moyer jmoyer@redhat.com Cc: Ross Zwisler ross.zwisler@linux.intel.com Cc: Inki Dae inki.dae@samsung.com Cc: Jan Kara jack@suse.cz Cc: Joonyoung Shim jy0922.shim@samsung.com Cc: Kyungmin Park kyungmin.park@samsung.com Cc: Mauro Carvalho Chehab mchehab@kernel.org Cc: Mel Gorman mgorman@suse.de Cc: Seung-Woo Kim sw0312.kim@samsung.com Cc: Vlastimil Babka vbabka@suse.cz Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/infiniband/core/umem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/infiniband/core/umem.c +++ b/drivers/infiniband/core/umem.c @@ -193,7 +193,7 @@ struct ib_umem *ib_umem_get(struct ib_uc sg_list_start = umem->sg_head.sgl;
while (npages) { - ret = get_user_pages(cur_base, + ret = get_user_pages_longterm(cur_base, min_t(unsigned long, npages, PAGE_SIZE / sizeof (struct page *)), gup_flags, page_list, vma_list);
Patches currently in stable-queue which might be from dan.j.williams@intel.com are
queue-4.9/mm-fix-devm_memremap_pages-collision-handling.patch queue-4.9/ib-core-disable-memory-registration-of-filesystem-dax-vmas.patch queue-4.9/mm-avoid-spurious-bad-pmd-warning-messages.patch queue-4.9/mm-introduce-get_user_pages_longterm.patch queue-4.9/mm-fail-get_vaddr_frames-for-filesystem-dax-mappings.patch queue-4.9/fs-dax.c-fix-inefficiency-in-dax_writeback_mapping_range.patch queue-4.9/device-dax-implement-split-to-catch-invalid-munmap-attempts.patch queue-4.9/v4l2-disable-filesystem-dax-mapping-support.patch queue-4.9/libnvdimm-dax-fix-1gb-aligned-namespaces-vs-physical-misalignment.patch queue-4.9/x86-entry-64-clear-extra-registers-beyond-syscall-arguments-to-reduce-speculation-attack-surface.patch queue-4.9/libnvdimm-fix-integer-overflow-static-analysis-warning.patch