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Tue, 16 Dec 2025 15:20:22 -0800 (PST) MIME-Version: 1.0 References: <20251009192933.3756712-1-joshua.hahnjy@gmail.com> <20251009192933.3756712-3-joshua.hahnjy@gmail.com> <42143500-c380-41fe-815c-696c17241506@roeck-us.net> In-Reply-To: <42143500-c380-41fe-815c-696c17241506@roeck-us.net> From: Daniel Palmer Date: Wed, 17 Dec 2025 08:20:10 +0900 X-Gm-Features: AQt7F2pdkaX_FXf3Vw4ZDQFKJiyh0g2VIemxkf9QfS5MKxqxzb6tlEjZT7oT4fU Message-ID: Subject: Re: [PATCH v2 2/2] mm/page_alloc: Prevent reporting pcp->batch = 0 [mcf5208evb boot failure] To: Guenter Roeck Cc: Joshua Hahn , Andrew Morton , Dave Hansen , Brendan Jackman , Johannes Weiner , Michal Hocko , Suren Baghdasaryan , Vlastimil Babka , Zi Yan , linux-kernel@vger.kernel.org, linux-mm@kvack.org, kernel-team@meta.com, Geert Uytterhoeven , linux-m68k@lists.linux-m68k.org Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam02 X-Stat-Signature: dwcnfatkous414yj5pdux71qa865ymgc X-Rspam-User: X-Rspamd-Queue-Id: BCE45180017 X-HE-Tag: 1765927223-741611 X-HE-Meta: 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 90BXxG2n Jb2R6OmiM0iZ71Z1/nnmue934cw== 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: Hi Guenter, On Wed, 17 Dec 2025 at 06:47, Guenter Roeck wrote: > With this patch in the tree, the qemu 'mcf5208evb' machine fails to boot > with memory errors such as > > S01syslogd: page allocation failure: order:7, mode:0xcc0(GFP_KERNEL), nodemask=(null) > CPU: 0 UID: 0 PID: 34 Comm: S01syslogd Not tainted 6.19.0-rc1 #1 NONE > Stack from 407d7ce0: > 407d7ce0 403df960 403df960 00000000 00000001 00000007 40027c60 403df960 > 400c06be 00000cc0 00000001 407d7d7e 400bf614 407d7d34 403df3ba 407d7d14 > 407d7db8 400c0e5c 00000cc0 00000000 403df3ba 00000007 00000007 00000cc0 > 000d8000 00000018 0000006c 00000001 00000000 40fe6640 00000000 40fe81e4 > 403ffa40 4085eff4 00000000 00000400 00000000 001008c0 00000000 40854041 > f4fe0000 00004041 f4fe0000 00000000 00010000 403ffa40 4085ed00 4085e800 > Call Trace: [<40027c60>] dump_stack+0xc/0x10 > [<400c06be>] warn_alloc+0xdc/0x1bc > [<400bf614>] get_page_from_freelist+0x0/0xfa6 > [<400c0e5c>] __alloc_frozen_pages_noprof+0x6be/0x8be > [<400c1358>] get_free_pages_noprof+0x16/0x3e I reported a different issue but with the same change: https://lore.kernel.org/lkml/CAFr9PX=_HaM3_xPtTiBn5Gw5-0xcRpawpJ02NStfdr0khF2k7g@mail.gmail.com/ https://lore.kernel.org/lkml/20251211102607.2538595-1-daniel@thingy.jp/ Cheers, Daniel