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([2001:df0:0:200c:cce2:5e6b:f484:1b3f]) by smtp.gmail.com with ESMTPSA id jg5-20020a17090326c500b001dd6e253f03sm244601plb.212.2024.03.13.17.59.26 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 13 Mar 2024 17:59:29 -0700 (PDT) Message-ID: <7d28d5ee-176a-49de-a93c-76e03913cd8a@gmail.com> Date: Thu, 14 Mar 2024 13:59:25 +1300 Precedence: bulk X-Mailing-List: linux-m68k@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: spinlock recursion when running q800 emulation in qemu Content-Language: en-US To: Finn Thain Cc: Geert Uytterhoeven , Guenter Roeck , linux-m68k@lists.linux-m68k.org References: <07811b26-677c-4d05-aeb4-996cd880b789@roeck-us.net> <0ccf5e42-63ec-a63d-9ee9-7043947637c3@gmail.com> <40205038-a7cd-2568-5f8e-2540aca2f84d@linux-m68k.org> <56f79fc8-1a62-48af-b2fb-cddace7c828f@gmail.com> <60029130-022e-8ec7-2dc5-678b077f1d69@linux-m68k.org> <6eeccba7-6877-dd3c-2a67-94ea448bead6@gmail.com> <5076e848-9bd3-3fea-0aca-5f62a8739a73@linux-m68k.org> <2465c81d-d2dd-320e-cb4c-1c23fd485aed@gmail.com> <9e5ce055-8af4-4cca-3505-a3186b86926d@linux-m68k.org> <745f844f-a100-5f38-99b3-97ace157b2a2@linux-m68k.org> <0c7b96d2-1cf1-4fc1-876e-8e3bc859a1c5@gmail.com> <028f8edc-a08f-571a-0985-275394b60986@linux-m68k.org> From: Michael Schmitz In-Reply-To: <028f8edc-a08f-571a-0985-275394b60986@linux-m68k.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Hi Finn, On 13/03/24 17:40, Finn Thain wrote: > On Wed, 13 Mar 2024, Michael Schmitz wrote: > >> Running a stack-ng stack-fill stressor triggered the panic, too. I'll >> see how reliable that is. >> > I see an immediate failure with full preemption in QEMU when I run > stress-ng -t 60 --zombie -1 Seems to work quite well. Though what I got on the first attempt was a deadlock with full preemption in ARAnyM. No panic. Time to look for a solution now we've got a nice test case. Cheers,     Michael