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[188.155.176.92]) by smtp.gmail.com with ESMTPSA id la10-20020a170907780a00b006e889ee7741sm6530550ejc.75.2022.04.20.02.42.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 20 Apr 2022 02:42:37 -0700 (PDT) Message-ID: <1c3cb265-2497-537d-3c7b-ca4766775b46@linaro.org> Date: Wed, 20 Apr 2022 11:42:36 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.7.0 Subject: Re: [PATCH v3 2/3] genirq: Always limit the affinity to online CPUs Content-Language: en-US To: Marc Zyngier Cc: Marek Szyprowski , linux-kernel , 'Linux Samsung SOC' , Thomas Gleixner , John Garry , Xiongfeng Wang , David Decotigny References: <20220405185040.206297-1-maz@kernel.org> <20220405185040.206297-3-maz@kernel.org> <4b7fc13c-887b-a664-26e8-45aed13f048a@samsung.com> <878rs8c2t2.wl-maz@kernel.org> <5dcf8d22-e9b3-f306-4c5f-256707e08fbf@samsung.com> <877d7sar5k.wl-maz@kernel.org> <39f69dfe-32e5-4cb3-118b-5c02b28cbcff@samsung.com> <70123e98-046f-f10e-1032-8d112edd3ecf@linaro.org> <87mtgg9jok.wl-maz@kernel.org> From: Krzysztof Kozlowski In-Reply-To: <87mtgg9jok.wl-maz@kernel.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 20/04/2022 11:40, Marc Zyngier wrote: > It was picked up by Thomas and pushed out into tip, which is pulled by > -next: > > maz@hot-poop:~/arm-platforms$ git describe --contains c48c8b829d2b966a6649827426bcdba082ccf922 > next-20220420~51^2~3^2 > > So it definitely is in today's -next. > >> Instead of silent fail there is now "Unable to handle kernel paging >> request at virtual address f0836644", so it is slightly different. >> >> See the dmesg: >> https://krzk.eu/#/builders/21/builds/3542/steps/15/logs/serial0 > > This looks completely unrelated: > > [ 10.382010] Unable to handle kernel paging request at virtual address f0836644 > [ 10.388597] [f0836644] *pgd=41c83811, *pte=00000000, *ppte=00000000 > [ 10.394482] Internal error: Oops: 807 [#1] PREEMPT SMP ARM > [ 10.399567] Modules linked in: > [ 10.402583] CPU: 2 PID: 1 Comm: swapper/0 Not tainted 5.18.0-rc3-next-20220420 #2 > [ 10.410060] Hardware name: Samsung Exynos (Flattened Device Tree) > [ 10.416106] PC is at cpu_ca15_set_pte_ext+0x4c/0x58 > [ 10.420952] LR is at handle_pte_fault+0x218/0x260 > [ 10.425631] pc : [] lr : [] psr: 40000113 > [ 10.431874] sp : f0835df0 ip : f0835e5c fp : 00000081 > [ 10.437069] r10: c0f2eafc r9 : c1d31000 r8 : 00000000 > [ 10.442268] r7 : c1d58000 r6 : 00000081 r5 : befffff6 r4 : f0835e24 > [ 10.448773] r3 : 00000000 r2 : 00000000 r1 : 00000040 r0 : f0835e44 > [ 10.455273] Flags: nZcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none > [ 10.462381] Control: 10c5387d Table: 4000406a DAC: 00000051 > > This is a crash in cpu_ca15_set_pte_ext() when populating the > userspace page tables, which seems unrelated to interrupt affinity. > > I suggest you bisect this to find the actual problem. Thanks for checking. Best regards, Krzysztof