Syzbot CI

Subject	Eliminate Dying Memory Cgroup
Author	qi.zheng@linux.dev
Date	2026-01-14 11:26:44 +0000 UTC
Version
Cc	akpm@linux-foundation.org apais@linux.microsoft.com axelrasmussen@google.com cgroups@vger.kernel.org chengming.zhou@linux.dev chenridong@huawei.com chenridong@huaweicloud.com david@kernel.org hamzamahfooz@linux.microsoft.com hannes@cmpxchg.org harry.yoo@oracle.com hughd@google.com imran.f.khan@oracle.com kamalesh.babulal@oracle.com lance.yang@linux.dev linux-kernel@vger.kernel.org linux-mm@kvack.org lorenzo.stoakes@oracle.com mhocko@suse.com mkoutny@suse.com muchun.song@linux.dev nphamcs@gmail.com qi.zheng@linux.dev roman.gushchin@linux.dev shakeel.butt@linux.dev songmuchun@bytedance.com weixugc@google.com yosry.ahmed@linux.dev yuanchu@google.com zhengqi.arch@bytedance.com ziy@nvidia.com

Subject

Author

qi.zheng@linux.dev

Date

2026-01-14 11:26:44 +0000 UTC

Version

akpm@linux-foundation.org apais@linux.microsoft.com axelrasmussen@google.com cgroups@vger.kernel.org chengming.zhou@linux.dev chenridong@huawei.com chenridong@huaweicloud.com david@kernel.org hamzamahfooz@linux.microsoft.com hannes@cmpxchg.org harry.yoo@oracle.com hughd@google.com imran.f.khan@oracle.com kamalesh.babulal@oracle.com lance.yang@linux.dev linux-kernel@vger.kernel.org linux-mm@kvack.org lorenzo.stoakes@oracle.com mhocko@suse.com mkoutny@suse.com muchun.song@linux.dev nphamcs@gmail.com qi.zheng@linux.dev roman.gushchin@linux.dev shakeel.butt@linux.dev songmuchun@bytedance.com weixugc@google.com yosry.ahmed@linux.dev yuanchu@google.com zhengqi.arch@bytedance.com ziy@nvidia.com

Name	Content [All]
[PATCH v3 01/30] mm: memcontrol: remove dead code of checking parent memory cgroup	[Body]
[PATCH v3 02/30] mm: workingset: use folio_lruvec() in workingset_refault()	[Body]
[PATCH v3 03/30] mm: rename unlock_page_lruvec_irq and its variants	[Body]
[PATCH v3 04/30] mm: vmscan: prepare for the refactoring the move_folios_to_lru()	[Body]
[PATCH v3 05/30] mm: vmscan: refactor move_folios_to_lru()	[Body]
[PATCH v3 06/30] mm: memcontrol: allocate object cgroup for non-kmem case	[Body]
[PATCH v3 07/30] mm: memcontrol: return root object cgroup for root memory cgroup	[Body]
[PATCH v3 08/30] mm: memcontrol: prevent memory cgroup release in get_mem_cgroup_from_folio()	[Body]
[PATCH v3 09/30] buffer: prevent memory cgroup release in folio_alloc_buffers()	[Body]
[PATCH v3 10/30] writeback: prevent memory cgroup release in writeback module	[Body]
[PATCH v3 11/30] mm: memcontrol: prevent memory cgroup release in count_memcg_folio_events()	[Body]
[PATCH v3 12/30] mm: page_io: prevent memory cgroup release in page_io module	[Body]
[PATCH v3 13/30] mm: migrate: prevent memory cgroup release in folio_migrate_mapping()	[Body]
[PATCH v3 14/30] mm: mglru: prevent memory cgroup release in mglru	[Body]
[PATCH v3 15/30] mm: memcontrol: prevent memory cgroup release in mem_cgroup_swap_full()	[Body]
[PATCH v3 16/30] mm: workingset: prevent memory cgroup release in lru_gen_eviction()	[Body]
[PATCH v3 17/30] mm: thp: prevent memory cgroup release in folio_split_queue_lock{_irqsave}()	[Body]
[PATCH v3 18/30] mm: zswap: prevent memory cgroup release in zswap_compress()	[Body]
[PATCH v3 19/30] mm: workingset: prevent lruvec release in workingset_refault()	[Body]
[PATCH v3 20/30] mm: zswap: prevent lruvec release in zswap_folio_swapin()	[Body]
[PATCH v3 21/30] mm: swap: prevent lruvec release in lru_gen_clear_refs()	[Body]
[PATCH v3 22/30] mm: workingset: prevent lruvec release in workingset_activation()	[Body]
[PATCH v3 23/30] mm: do not open-code lruvec lock	[Body]
[PATCH v3 24/30] mm: memcontrol: prepare for reparenting LRU pages for lruvec lock	[Body]
[PATCH v3 25/30] mm: vmscan: prepare for reparenting traditional LRU folios	[Body]
[PATCH v3 26/30] mm: vmscan: prepare for reparenting MGLRU folios	[Body]
[PATCH v3 27/30] mm: memcontrol: refactor memcg_reparent_objcgs()	[Body]
[PATCH v3 28/30] mm: memcontrol: prepare for reparenting state_local	[Body]
[PATCH v3 29/30] mm: memcontrol: eliminate the problem of dying memory cgroup for LRU folios	[Body]
[PATCH v3 30/30] mm: lru: add VM_WARN_ON_ONCE_FOLIO to lru maintenance helpers	[Body]

Name

Content [All]

[PATCH v3 01/30] mm: memcontrol: remove dead code of checking parent memory cgroup

[PATCH v3 02/30] mm: workingset: use folio_lruvec() in workingset_refault()

[PATCH v3 03/30] mm: rename unlock_page_lruvec_irq and its variants

[PATCH v3 04/30] mm: vmscan: prepare for the refactoring the move_folios_to_lru()

[PATCH v3 05/30] mm: vmscan: refactor move_folios_to_lru()

[PATCH v3 06/30] mm: memcontrol: allocate object cgroup for non-kmem case

[PATCH v3 07/30] mm: memcontrol: return root object cgroup for root memory cgroup

[PATCH v3 08/30] mm: memcontrol: prevent memory cgroup release in get_mem_cgroup_from_folio()

[PATCH v3 09/30] buffer: prevent memory cgroup release in folio_alloc_buffers()

[PATCH v3 10/30] writeback: prevent memory cgroup release in writeback module

[PATCH v3 11/30] mm: memcontrol: prevent memory cgroup release in count_memcg_folio_events()

[PATCH v3 12/30] mm: page_io: prevent memory cgroup release in page_io module

[PATCH v3 13/30] mm: migrate: prevent memory cgroup release in folio_migrate_mapping()

[PATCH v3 14/30] mm: mglru: prevent memory cgroup release in mglru

[PATCH v3 15/30] mm: memcontrol: prevent memory cgroup release in mem_cgroup_swap_full()

[PATCH v3 16/30] mm: workingset: prevent memory cgroup release in lru_gen_eviction()

[PATCH v3 17/30] mm: thp: prevent memory cgroup release in folio_split_queue_lock{_irqsave}()

[PATCH v3 18/30] mm: zswap: prevent memory cgroup release in zswap_compress()

[PATCH v3 19/30] mm: workingset: prevent lruvec release in workingset_refault()

[PATCH v3 20/30] mm: zswap: prevent lruvec release in zswap_folio_swapin()

[PATCH v3 21/30] mm: swap: prevent lruvec release in lru_gen_clear_refs()

[PATCH v3 22/30] mm: workingset: prevent lruvec release in workingset_activation()

[PATCH v3 23/30] mm: do not open-code lruvec lock

[PATCH v3 24/30] mm: memcontrol: prepare for reparenting LRU pages for lruvec lock

[PATCH v3 25/30] mm: vmscan: prepare for reparenting traditional LRU folios

[PATCH v3 26/30] mm: vmscan: prepare for reparenting MGLRU folios

[PATCH v3 27/30] mm: memcontrol: refactor memcg_reparent_objcgs()

[PATCH v3 28/30] mm: memcontrol: prepare for reparenting state_local

[PATCH v3 29/30] mm: memcontrol: eliminate the problem of dying memory cgroup for LRU folios

[PATCH v3 30/30] mm: lru: add VM_WARN_ON_ONCE_FOLIO to lru maintenance helpers

Session 2026-01-14

1 Findings

ID (for dev)	7be7ba39-0cc7-46df-9b38-3247240486fd
Status	finished
Triaged	OK [Log]
Execution Log	[Link]

Test	Base	Patched	Verdict
[KASAN] Build Base	b775e489bec70895b7ef6b66927886bbac79598f [Config]		passed [Log]
[KASAN] Boot test: Base	b775e489bec70895b7ef6b66927886bbac79598f [Config]		passed [Log]
[KASAN] Build Patched		b775e489bec70895b7ef6b66927886bbac79598f [Config] [patched]	passed [Log]
[KASAN] Boot test: Patched		b775e489bec70895b7ef6b66927886bbac79598f [Config] [patched]	passed [Log]
[KASAN] Fuzzing	b775e489bec70895b7ef6b66927886bbac79598f [Config]	b775e489bec70895b7ef6b66927886bbac79598f [Config] [patched]	passed [Log] [Artifacts]
finding UBSAN: array-index-out-of-bounds in reparent_memcg_lruvec_state_local Log Syz Repro

Patches (30)

Series Summary

Sessions

Session 2026-01-14