Re: [PATCH 4.4 00/88] 4.4.168-stable review

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On 12/17/18 1:05 AM, Greg Kroah-Hartman wrote:
On Sun, Dec 16, 2018 at 11:58:13PM +0000, Ben Hutchings wrote:
On Sat, 2018-12-15 at 07:45 -0800, Guenter Roeck wrote:
On 12/15/18 12:07 AM, Greg Kroah-Hartman wrote:
On Fri, Dec 14, 2018 at 06:10:29PM -0800, Guenter Roeck wrote:
On 12/14/18 3:59 AM, Greg Kroah-Hartman wrote:
This is the start of the stable review cycle for the 4.4.168 release.
There are 88 patches in this series, all will be posted as a response
to this one.  If anyone has any issues with these being applied, please
let me know.

Responses should be made by Sun Dec 16 11:56:41 UTC 2018.
Anything received after that time might be too late.

Build results:
	total: 170 pass: 145 fail: 25
Failed builds:
	arm:allnoconfig
	arm:tinyconfig
	arm:efm32_defconfig
	blackfin:defconfig
	blackfin:BF561-EZKIT-SMP_defconfig
	c6x:dsk6455_defconfig
	c6x:evmc6457_defconfig
	c6x:evmc6678_defconfig
	h8300:allnoconfig
	h8300:tinyconfig
	h8300:edosk2674_defconfig
	h8300:h8300h-sim_defconfig
	h8300:h8s-sim_defconfig
	m68k:allnoconfig
	m68k:tinyconfig
	m68k:m5272c3_defconfig
	m68k:m5307c3_defconfig
	m68k:m5249evb_defconfig
	m68k:m5407c3_defconfig
	microblaze:nommu_defconfig
	microblaze:allnoconfig
	microblaze:tinyconfig
	sh:defconfig
	sh:allnoconfig
	sh:tinyconfig
Qemu test results:
	total: 288 pass: 288 fail: 0

mm/nommu.c: In function '__get_user_pages_unlocked':
mm/nommu.c:211:49: error: 'write' undeclared (first use in this function)
mm/nommu.c:211:56: error: 'force' undeclared (first use in this function)
mm/nommu.c:212:9: warning: passing argument 7 of 'get_user_pages' from incompatible pointer type [enabled by default]
mm/nommu.c:185:6: note: expected 'struct vm_area_struct **' but argument is of type 'struct page **'
mm/nommu.c:212:9: error: too many arguments to function 'get_user_pages'
mm/nommu.c:185:6: note: declared here

Details are available at https://kerneltests.org/builders/.

Ugh, I'll dig through this later on today, we must be missing something
with those backports that Ben did...


69ce144e5c3a ("mm: replace get_user_pages() write/force parameters
with gup_flags") seems to have missed converting a call of
get_user_pages().

Right.  This was changed earlier upstream in commit cde70140fed8
"mm/gup: Overload get_user_pages() functions", but I don't think it
makes sense to apply all of that.  I'm attaching a minimal patch
(tested with an arm allnoconfig build) which should ideally be inserted
before mm-replace-get_user_pages-write-force-parameters-with-
gup_flags.patch.

Ben.

--
Ben Hutchings, Software Developer                         Codethink Ltd
https://www.codethink.co.uk/                 Dale House, 35 Dale Street
                                      Manchester, M1 2HF, United Kingdom

 From 0d0afe933f60f5736c984e9171214aa34b18764c Mon Sep 17 00:00:00 2001
From: Ben Hutchings <ben.hutchings@xxxxxxxxxxxxxxx>
Date: Sun, 16 Dec 2018 23:50:08 +0000
Subject: [PATCH] mm/nommu.c: Switch __get_user_pages_unlocked() to use
  __get_user_pages()

Extracted from commit cde70140fed8 "mm/gup: Overload get_user_pages()
functions".  This is needed before picking commit 768ae309a961
"mm: replace get_user_pages() write/force parameters with gup_flags".

Signed-off-by: Ben Hutchings <ben.hutchings@xxxxxxxxxxxxxxx>
---
  mm/nommu.c | 4 ++--
  1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/mm/nommu.c b/mm/nommu.c
index fa1560c218d5..2360546db065 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -208,8 +208,8 @@ long __get_user_pages_unlocked(struct task_struct *tsk, struct mm_struct *mm,
  {
  	long ret;
  	down_read(&mm->mmap_sem);
-	ret = get_user_pages(tsk, mm, start, nr_pages, write, force,
-			     pages, NULL);
+	ret = __get_user_pages(tsk, mm, start, nr_pages, gup_flags, pages,
+			       NULL, NULL);
  	up_read(&mm->mmap_sem);
  	return ret;
  }

Thanks for the patch.  I've added it to the queue and pushed out a -rc2
with this in it.

Let's see what the builders say :)


v4.4.167-89-g9c558d7fe359 seemed to be happy. v4.4.167-89-g50a0280f2f7e
replaced it and will take a while.

Guenter



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