From: "Paul E. McKenney" <paulmck(a)kernel.org>
[ Upstream commit 6bc6e6b27524304aadb9c04611ddb1c84dd7617a ]
The ref_scale_shutdown() kthread/function uses wait_event() to wait for
the refscale test to complete. However, although the read-side tests
are normally extremely fast, there is no law against specifying a very
large value for the refscale.loops module parameter or against having
a slow read-side primitive. Either way, this might well trigger the
hung-task timeout.
This commit therefore replaces those wait_event() calls with calls to
wait_event_idle(), which do not trigger the hung-task timeout.
Signed-off-by: Paul E. McKenney <paulmck(a)kernel.org>
Signed-off-by: Boqun Feng <boqun.feng(a)gmail.com>
Signed-off-by: Sasha Levin <sashal(a)kernel.org>
---
kernel/rcu/refscale.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/rcu/refscale.c b/kernel/rcu/refscale.c
index 435c884c02b5c..d49a9d66e0000 100644
--- a/kernel/rcu/refscale.c
+++ b/kernel/rcu/refscale.c
@@ -795,7 +795,7 @@ ref_scale_cleanup(void)
static int
ref_scale_shutdown(void *arg)
{
- wait_event(shutdown_wq, shutdown_start);
+ wait_event_idle(shutdown_wq, shutdown_start);
smp_mb(); // Wake before output.
ref_scale_cleanup();
--
2.39.2
From: "Paul E. McKenney" <paulmck(a)kernel.org>
[ Upstream commit 6bc6e6b27524304aadb9c04611ddb1c84dd7617a ]
The ref_scale_shutdown() kthread/function uses wait_event() to wait for
the refscale test to complete. However, although the read-side tests
are normally extremely fast, there is no law against specifying a very
large value for the refscale.loops module parameter or against having
a slow read-side primitive. Either way, this might well trigger the
hung-task timeout.
This commit therefore replaces those wait_event() calls with calls to
wait_event_idle(), which do not trigger the hung-task timeout.
Signed-off-by: Paul E. McKenney <paulmck(a)kernel.org>
Signed-off-by: Boqun Feng <boqun.feng(a)gmail.com>
Signed-off-by: Sasha Levin <sashal(a)kernel.org>
---
kernel/rcu/refscale.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/rcu/refscale.c b/kernel/rcu/refscale.c
index afa3e1a2f6902..1970ce5f22d40 100644
--- a/kernel/rcu/refscale.c
+++ b/kernel/rcu/refscale.c
@@ -1031,7 +1031,7 @@ ref_scale_cleanup(void)
static int
ref_scale_shutdown(void *arg)
{
- wait_event(shutdown_wq, shutdown_start);
+ wait_event_idle(shutdown_wq, shutdown_start);
smp_mb(); // Wake before output.
ref_scale_cleanup();
--
2.39.2
The patch titled
Subject: mm: call arch_swap_restore() from do_swap_page()
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
mm-call-arch_swap_restore-from-do_swap_page.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patche…
This patch will later appear in the mm-hotfixes-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: Peter Collingbourne <pcc(a)google.com>
Subject: mm: call arch_swap_restore() from do_swap_page()
Date: Mon, 22 May 2023 17:43:08 -0700
Commit c145e0b47c77 ("mm: streamline COW logic in do_swap_page()") moved
the call to swap_free() before the call to set_pte_at(), which meant that
the MTE tags could end up being freed before set_pte_at() had a chance to
restore them. Fix it by adding a call to the arch_swap_restore() hook
before the call to swap_free().
Link: https://lkml.kernel.org/r/20230523004312.1807357-2-pcc@google.com
Link: https://linux-review.googlesource.com/id/I6470efa669e8bd2f841049b8c61020c51…
Fixes: c145e0b47c77 ("mm: streamline COW logic in do_swap_page()")
Signed-off-by: Peter Collingbourne <pcc(a)google.com>
Reported-by: Qun-wei Lin <Qun-wei.Lin(a)mediatek.com>
Closes: https://lore.kernel.org/all/5050805753ac469e8d727c797c2218a9d780d434.camel@…
Acked-by: David Hildenbrand <david(a)redhat.com>
Acked-by: "Huang, Ying" <ying.huang(a)intel.com>
Reviewed-by: Steven Price <steven.price(a)arm.com>
Acked-by: Catalin Marinas <catalin.marinas(a)arm.com>
Cc: <stable(a)vger.kernel.org> [6.1+]
Signed-off-by: Andrew Morton <akpm(a)linux-foundation.org>
---
mm/memory.c | 7 +++++++
1 file changed, 7 insertions(+)
--- a/mm/memory.c~mm-call-arch_swap_restore-from-do_swap_page
+++ a/mm/memory.c
@@ -3954,6 +3954,13 @@ vm_fault_t do_swap_page(struct vm_fault
}
/*
+ * Some architectures may have to restore extra metadata to the page
+ * when reading from swap. This metadata may be indexed by swap entry
+ * so this must be called before swap_free().
+ */
+ arch_swap_restore(entry, folio);
+
+ /*
* Remove the swap entry and conditionally try to free up the swapcache.
* We're already holding a reference on the page but haven't mapped it
* yet.
_
Patches currently in -mm which might be from pcc(a)google.com are
mm-call-arch_swap_restore-from-do_swap_page.patch
Hi,
A regression [1] was reported on suspend for AMD Stoney on 6.3.10.
It bisected down to:
1ca399f127e0 ("drm/amd/display: Add wrapper to call planes and stream
update")
This was requested by me to fix a PSR problem [2], which isn't used on
Stoney.
This was also backported into 6.1.36 (as e538342002cb) and 5.15.119 (as
3c1aa91b37f9).
It's fixed on 6.3.y by cherry-picking:
32953485c558 ("drm/amd/display: Do not update DRR while BW optimizations
pending")
It's fixed in 6.1.y by cherry-picking:
3442f4e0e555 ("drm/amd/display: Remove optimization for VRR updates")
32953485c558 ("drm/amd/display: Do not update DRR while BW optimizations
pending")
On 5.15.y it's not a reasonable backport to take the fix to stable
because there is a lot of missing Freesync code. Instead it's better to
revert the patch series that introduced it to 5.15.y because PSR-SU
isn't even introduced until later kernels anyway.
5a24be76af79 ("drm/amd/display: fix the system hang while disable PSR")
3c1aa91b37f9 ("drm/amd/display: Add wrapper to call planes and stream
update")
eea850c025b5 ("drm/amd/display: Use dc_update_planes_and_stream")
97ca308925a5 ("drm/amd/display: Add minimal pipe split transition state")
[1] https://gitlab.freedesktop.org/drm/amd/-/issues/2670
[2]
https://lore.kernel.org/stable/e2ae2999-2e39-31ad-198a-26ab3ae53ae7@amd.com/
Thanks,
Hallow und wie geht es dir heute?
Ich möchte, dass Ihre Partnerschaft Sie als Subunternehmer
präsentiert, damit Sie in meinem Namen 8,6 Millionen US-Dollar aus
Überrechnungsverträgen erhalten können, die wir zu 65 % und 35 %
aufteilen können.
Diese Transaktion ist 100 % risikofrei; Du brauchst keine Angst zu haben.
Bitte senden Sie mir eine E-Mail an (osbornemichel438(a)gmail.com), um
ausführliche Informationen zu erhalten und bei Interesse zu erfahren,
wie wir dies gemeinsam bewältigen können.
Sie müssen es mir also weiterleiten
Ihr vollständiger Name.........................
Telefon.............
Geburtsdatum .........................
Staatsangehörigkeit .................................
Mit freundlichen Grüße,
Osborne Michel.
Hallow and how are you today?
I seek for your partnership to present you as a sub-contractor so
that you can receive 8.6M Over-Invoice contract fund on my behalf and
we can split it 65% 35%.
This transaction is 100% risk -free; you need not to be afraid.
Please email me at ( osbornemichel438(a)gmail.com ) for comprehensive
details and how we can handle this together if interested.
So I need you to forward it to me
your full name.........................
Telephone.............
Date of Birth .........................
Nationality .................................
Kind Regards,
Osborne Michel.