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AJvYcCUPaa1sPfwX5idsdLaBMxvEjbDQ2RnIn+N19T9JX8QmHbS+DuVfZVFFhWm7r2x0ZqOLvxChH7q48JUgsK/TJ4VY/Ik= X-Gm-Message-State: AOJu0YzxSKCm+zIdRj7Wf1AwW+sX8pM5AmV2DVz2wXkNdPasAyES0OAs 3Af8G5qHqHq3mcM/TFm9TR959cE8zJyUdcM+pkEro/HWWI2oNWQeDW1lCJCSjlfuzhZmRkkPGtE 5rHaM8yM59YdX5FXdgUPS7os8Rveu6SA0meky X-Google-Smtp-Source: AGHT+IHNbHupo5acr2B4R/P/hsgga+93sAkzQ/xIPu1nrmVLsRmIQlcAe0rDHcwgQa/2R4VXwD7MHFj2EsLxttIyVH0= X-Received: by 2002:a17:906:f909:b0:a6f:62c5:87be with SMTP id a640c23a62f3a-a6ffe270a03mr393937866b.4.1719230792180; Mon, 24 Jun 2024 05:06:32 -0700 (PDT) MIME-Version: 1.0 References: <202406241651.963e3e78-oliver.sang@intel.com> In-Reply-To: <202406241651.963e3e78-oliver.sang@intel.com> From: Yosry Ahmed Date: Mon, 24 Jun 2024 05:05:56 -0700 Message-ID: Subject: Re: [linux-next:master] [mm] 0fa2857d23: WARNING:at_mm/page_alloc.c:#__alloc_pages_noprof To: kernel test robot Cc: Usama Arif , oe-lkp@lists.linux.dev, lkp@intel.com, Linux Memory Management List , Andrew Morton , Chengming Zhou , Nhat Pham , David Hildenbrand , "Huang, Ying" , Hugh Dickins , Johannes Weiner , Matthew Wilcox , Shakeel Butt , Andi Kleen , linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 4E94A14001A X-Stat-Signature: 16ze9sw1tc6kmzt9nbnwr791qusoforq X-Rspam-User: X-HE-Tag: 1719230794-187062 X-HE-Meta: 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 FzhlUczL 48dk330G4HD3+E5DEaaRbHNtrDoDndc83KvU983fcroGXMfBpcAOkXIkZe5atM25Qxu6zzQLBxPkELvbGBEOD0jNBbHpd2M2A86urLmgR6sCoJ/bLADoUg67tEIVqnstVOUiA+veiNRZMHwSyuLDSaJ3k2jXYNH37xY3LoN5yz2n/PHnVl/J7KQ5LhaYspuIEFOcGiccgQs7ffNRrf2Q6OgGgqrDyj4WuEHSss5U9sXEsSMiBqiHa72ujedEvUbOn5N1minDBuY5HI55/DoSA/Zmsm97CVI3T9qxLot0w4eRuMjo= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Mon, Jun 24, 2024 at 1:49=E2=80=AFAM kernel test robot wrote: > > > > Hello, > > kernel test robot noticed "WARNING:at_mm/page_alloc.c:#__alloc_pages_nopr= of" on: > > commit: 0fa2857d23aa170e5e28d13c467b303b0065aad8 ("mm: store zero pages t= o be swapped out in a bitmap") > https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master This is coming from WARN_ON_ONCE_GFP(order > MAX_PAGE_ORDER, gfp), and is triggered by the new bitmap_zalloc() call in the swapon path. For a sufficiently large swapfile, bitmap_zalloc() (which uses kmalloc() under the hood) cannot be used to allocate the bitmap. Usama, I think we want to use a variant of kvmalloc() here.