The patch titled
Subject: revert "vmstat: disable vmstat_work on vmstat_cpu_down_prep()"
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
revert-vmstat-disable-vmstat_work-on-vmstat_cpu_down_prep.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/revert-vmstat-disable-vmstat_work-on-vmstat_cpu_down_prep.patch
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: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: revert "vmstat: disable vmstat_work on vmstat_cpu_down_prep()"
Date: Mon Jan 6 06:24:12 PM PST 2025
Revert adcfb264c3ed ("vmstat: disable vmstat_work on
vmstat_cpu_down_prep()") due to "workqueue: work disable count
underflowed" WARNings.
Fixes: adcfb264c3ed ("vmstat: disable vmstat_work on vmstat_cpu_down_prep()")
Reported-by: Borislav Petkov <bp@xxxxxxxxx>
Reported-by: Alexander Gordeev <agordeev@xxxxxxxxxxxxx>
Cc: Greg KH <greg@xxxxxxxxx>
Cc: Koichiro Den <koichiro.den@xxxxxxxxxxxxx>
Cc: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/vmstat.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
--- a/mm/vmstat.c~revert-vmstat-disable-vmstat_work-on-vmstat_cpu_down_prep
+++ a/mm/vmstat.c
@@ -2148,14 +2148,13 @@ static int vmstat_cpu_online(unsigned in
if (!node_state(cpu_to_node(cpu), N_CPU)) {
node_set_state(cpu_to_node(cpu), N_CPU);
}
- enable_delayed_work(&per_cpu(vmstat_work, cpu));
return 0;
}
static int vmstat_cpu_down_prep(unsigned int cpu)
{
- disable_delayed_work_sync(&per_cpu(vmstat_work, cpu));
+ cancel_delayed_work_sync(&per_cpu(vmstat_work, cpu));
return 0;
}
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
revert-vmstat-disable-vmstat_work-on-vmstat_cpu_down_prep.patch
mm-swap_cgroup-allocate-swap_cgroup-map-using-vcalloc-fix.patch
mm-page_alloc-add-some-detailed-comments-in-can_steal_fallback-fix.patch
mm-introduce-mmap_lock_speculate_try_beginretry-fix.patch
mm-damon-tests-vaddr-kunith-reduce-stack-consumption.patch
mm-damon-tests-vaddr-kunith-reduce-stack-consumption-fix.patch
mm-remove-an-avoidable-load-of-page-refcount-in-page_ref_add_unless-fix.patch
mm-fix-outdated-incorrect-code-comments-for-handle_mm_fault-fix.patch
mm-huge_memoryc-rename-shadowed-local.patch
replace-free-hugepage-folios-after-migration-fix.patch
xarray-port-tests-to-kunit-fix.patch
checkpatch-check-return-of-git_commit_info-fix.patch
fault-inject-use-prandom-where-cryptographically-secure-randomness-is-not-needed-fix.patch
