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([2001:1a48:8:903:1ed6:4f73:ce38:f9d4]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-4399c76b20bsm596856f8f.35.2026.02.26.08.31.01 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 26 Feb 2026 08:31:01 -0800 (PST) Message-ID: <64604c7e-5db9-49b9-b576-bbc627c8ddd1@suse.com> Date: Thu, 26 Feb 2026 17:31:01 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [REGRESSION] kswapd0: page allocation failure (bisected to "slab: add sheaves to most caches") Content-Language: en-US To: Mikhail Gavrilov , harry.yoo@oracle.com Cc: chris.bainbridge@gmail.com, vbabka@suse.cz, surenb@google.com, dsterba@suse.cz, hao.li@linux.dev, leitao@debian.org, Liam.Howlett@oracle.com, zhao1.liu@intel.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-btrfs@vger.kernel.org, regressions@lists.linux.dev References: <20260226162052.36121-1-mikhail.v.gavrilov@gmail.com> From: Vlastimil Babka In-Reply-To: <20260226162052.36121-1-mikhail.v.gavrilov@gmail.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: F406B40003 X-Stat-Signature: enz18syti1e4azj5ygnqwq5tpxe78py7 X-HE-Tag: 1772123463-113511 X-HE-Meta: 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 LVG4Gr7V 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 2/26/26 17:20, Mikhail Gavrilov wrote: > On Wed, Feb 25, 2026, Harry Yoo wrote: >> Slab fix is submitted here, please feel free to test: >> >> https://lore.kernel.org/linux-mm/20260223133322.16705-1-harry.yoo@oracle.com > > No page allocation failures after 33 hours of uptime under normal > desktop workload with memory pressure (64GB RAM, btrfs + zram swap, > Chrome with many tabs, AMD GPU). > > Previously without this patch, I was seeing failures from both > kswapd0/btrfs and chrome/amdgpu callers within 10 hours. > > Kernel: 7.0.0-rc1 (commit 7dff99b35460 + this patch) > Hardware: ASUS ROG STRIX B650E-I, AMD Ryzen, 64GB RAM > > Tested-by: Mikhail Gavrilov Thanks, added to the commit.