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...
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@linux-foundation.org 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@alien8.de Reported-by: Alexander Gordeev agordeev@linux.ibm.com Cc: Greg KH greg@kroah.com Cc: Koichiro Den koichiro.den@canonical.com Cc: Sebastian Andrzej Siewior bigeasy@linutronix.de Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org ---
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@linux-foundation.org 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mm-remove-an-avoidable-load-of-page-refcount-in-page_ref_add_unless-fix.patch mm-fix-outdated-incorrect-code-comments-for-handle_mm_fault-fix.patch mm-huge_memoryc-rename-shadowed-local.patch replace-free-hugepage-folios-after-migration-fix.patch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