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[209.85.208.178]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-2f15e1afe31sm11919531fa.48.2024.08.05.19.40.24 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 05 Aug 2024 19:40:24 -0700 (PDT) Received: by mail-lj1-f178.google.com with SMTP id 38308e7fff4ca-2f025b94e07so985331fa.0 for ; Mon, 05 Aug 2024 19:40:24 -0700 (PDT) X-Forwarded-Encrypted: i=1; AJvYcCVQFuEcVmmpL0f0u0npdhytEYXuq6JZPqhoqAK/JXtUtCS7YB+HOX3l1t1eZO37lhDhjkkm87yEVD6Va2QNF0TExUo= X-Received: by 2002:a2e:9816:0:b0:2ec:63f:fe91 with SMTP id 38308e7fff4ca-2f15ab01fe6mr97347991fa.38.1722912024066; Mon, 05 Aug 2024 19:40:24 -0700 (PDT) MIME-Version: 1.0 References: <20240731095022.970699670@linuxfoundation.org> <718b8afe-222f-4b3a-96d3-93af0e4ceff1@roeck-us.net> In-Reply-To: <718b8afe-222f-4b3a-96d3-93af0e4ceff1@roeck-us.net> From: Linus Torvalds Date: Mon, 5 Aug 2024 19:40:07 -0700 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: [PATCH 6.10 000/809] 6.10.3-rc3 review To: Guenter Roeck , Vlastimil Babka Cc: linux-kernel@vger.kernel.org, Linux-MM Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 5F0A71C001A X-Stat-Signature: ndkqurnfsurhtqxf71ohmwrs7zekhpcr X-Rspamd-Server: rspam09 X-Rspam-User: X-HE-Tag: 1722912027-815917 X-HE-Meta: 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 84637dvC 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 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: [ Let's drop random people and bring in Vlastimil ] Vlastimil, it turns out that the "this patch" is entirely a red herring, and the problem comes and goes randomly with just some code layout issues. See http://server.roeck-us.net/qemu/parisc64-6.10.3/ for more detail, particularly you'll see the "log.bad.gz" with the full log. See also https://lore.kernel.org/all/87y15a4p4h.ffs@tglx/ for this thread. I don't think this is really a slub issue, since it only happens on parisc, but maybe you can see what would make parisc different, and what could possibly make it all timing- or layout-dependent. Linus On Sun, 4 Aug 2024 at 11:36, Guenter Roeck wrote: > > With this patch in v6.10.3, all my parisc64 qemu tests get stuck with repeated error messages > > [ 0.000000] ============================================================================= > [ 0.000000] BUG kmem_cache_node (Not tainted): objects 21 > max 16 > [ 0.000000] ----------------------------------------------------------------------------- > > This never stops until the emulation aborts.