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Howlett , Mike Rapoport , Suren Baghdasaryan , cgroups@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, syzbot+1a3353a77896e73a8f53@syzkaller.appspotmail.com Subject: Re: [PATCH] mm/memcontrol: restore irq wrapper for lruvec_stat_mod_folio() Date: Thu, 16 Apr 2026 00:22:53 +0800 Message-ID: <177627017370.51713.13753959033860067852@163.com> In-Reply-To: References: <20260413064833.964-1-create0818@163.com> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-CM-TRANSID:_____wB3WoNeu99pgeDOEw--.35537S2 X-Coremail-Antispam: 1Uf129KBjvdXoW7Gr1rtr4rZr1UuFW8tFyrJFb_yoWDCFcEvF y0krW5Ww4xAr42qa10yF1qyr9aq3WfCr1DAa4jgw4Sv3s2qFn0gaykur12qFn3Ka18tFnx Gr47uw17K3yY9jkaLaAFLSUrUUUUjb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUvcSsGvfC2KfnxnUUI43ZEXa7IUUgo2UUUUUU== X-Originating-IP: [39.156.194.234] X-CM-SenderInfo: pfuht3jhqyimi6rwjhhfrp/xtbC6AVak2nfu2XCbAAA3i X-Stat-Signature: freqeakrur8e1rxrzygoqxqk7n9m39mi X-Rspamd-Queue-Id: 2923D14000E X-Rspam-User: X-Rspamd-Server: rspam06 X-HE-Tag: 1776270218-889359 X-HE-Meta: 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 pG5xNXFi 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi, Sorry for the noise and for sending an insufficiently validated conclusion ea= rlier. I rechecked this more carefully, and my earlier conclusion was not wel= l founded. I can no longer justify memcg_validate_race: fixed start/end mismatch (1 -> 0) as evidence for this patch. I rebuilt an apples-to-apples baseline/fixed pair from the same source base a= nd reran the QEMU validation. The result is: - baseline and fixed both reproduce the warning under the original remount-ba= sed harness - baseline and fixed both stop reproducing it under a no-remount harness - the validation workers still start in the no-remount case So this warning does not distinguish the wrapper patch from baseline behavior= . At this point it appears to be induced by the remount/rebind test harness i= tself, not evidence of a wrapper-specific regression. I do not have a reproducer that distinguishes baseline from the patched kerne= l, so I am dropping this patch from this line of argument. Assisted-by: OpenAI Codex: GPT-5.4 [shell] [qemu]