This is a note to let you know that I've just added the patch titled

mm/frame_vector.c: release a semaphore in 'get_vaddr_frames()'

to the 4.14-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: mm-frame_vector.c-release-a-semaphore-in-get_vaddr_frames.patch and it can be found in the queue-4.14 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 Wed Feb 28 16:23:28 CET 2018

From: Christophe JAILLET christophe.jaillet@wanadoo.fr Date: Thu, 14 Dec 2017 15:33:08 -0800 Subject: mm/frame_vector.c: release a semaphore in 'get_vaddr_frames()'

From: Christophe JAILLET christophe.jaillet@wanadoo.fr

[ Upstream commit 1f704fd0d14043e76e80f6b8b2251b9b2cedcca6 ]

A semaphore is acquired before this check, so we must release it before leaving.

Link: http://lkml.kernel.org/r/20171211211009.4971-1-christophe.jaillet@wanadoo.fr Fixes: b7f0554a56f2 ("mm: fail get_vaddr_frames() for filesystem-dax mappings") Signed-off-by: Christophe JAILLET christophe.jaillet@wanadoo.fr Acked-by: Michal Hocko mhocko@suse.com Cc: Dan Williams dan.j.williams@intel.com Cc: Christian Borntraeger borntraeger@de.ibm.com Cc: David Sterba dsterba@suse.com Cc: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Sasha Levin alexander.levin@verizon.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- mm/frame_vector.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/mm/frame_vector.c +++ b/mm/frame_vector.c @@ -62,8 +62,10 @@ int get_vaddr_frames(unsigned long start * get_user_pages_longterm() and disallow it for filesystem-dax * mappings. */ - if (vma_is_fsdax(vma)) - return -EOPNOTSUPP; + if (vma_is_fsdax(vma)) { + ret = -EOPNOTSUPP; + goto out; + }

if (!(vma->vm_flags & (VM_IO | VM_PFNMAP))) { vec->got_ref = true;

Patches currently in stable-queue which might be from christophe.jaillet@wanadoo.fr are

queue-4.14/mdio-sun4i-fix-a-memory-leak.patch queue-4.14/mm-frame_vector.c-release-a-semaphore-in-get_vaddr_frames.patch