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Fri, 6 Nov 2026 06:09:42 +0000 (GMT) Received: from [9.124.209.241] (unknown [9.124.209.241]) by smtpav02.fra02v.mail.ibm.com (Postfix) with ESMTP; Fri, 6 Nov 2026 06:09:42 +0000 (GMT) Message-ID: Date: Fri, 6 Nov 2026 11:39:50 +0530 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PREEMPT] Kernel panic - not syncing: stack-protector: Kernel stack is corrupted To: Christian Zigotzky Cc: Ritesh Harjani , Narayana Murty N , maddy@linux.ibm.com, linuxppc-dev@lists.ozlabs.org, mpe@ellerman.id.au, npiggin@gmail.com, christophe.leroy@csgroup.eu, linux-kernel@vger.kernel.org, msuchanek@suse.de, harshpb@linux.ibm.com, gautam@linux.ibm.com, amachhiw@linux.ibm.com, venkat88@linux.ibm.com, "R.T.Dickinson" , mad skateman , Damien Stewart References: <4FED0F6E-890F-4482-99F3-39D7520C48FE@xenosoft.de> <00f8e9aa-c3ec-1911-d81f-291d3c6ae8f0@xenosoft.de> Content-Language: en-US From: Shrikanth Hegde In-Reply-To: <00f8e9aa-c3ec-1911-d81f-291d3c6ae8f0@xenosoft.de> Content-Type: text/plain; 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On 11/6/26 10:37 AM, Christian Zigotzky wrote: > Hi all, > > Ever since we enabled PREEMPT on our Nemo boards [1], we have been experiencing occasional problems with the kernel stack. > > Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: srcu_gp_start_if_needed+0x534/0x538 > Rebooting in 180 seconds.. > We had one known issue which michal had brought up. Do you have tracing enabled or running a bpf/bcc program? This is the fix already in upstream. Do you have this patch? https://lore.kernel.org/all/20260921072151.35531-1-sshegde@linux.ibm.com/#t > We are using the following patches: [2] [3] > > We have disabled PREEMPT with a patch [4] again, and since then our Nemo boards have been running perfectly once more. > > As the problem with the kernel stack only occurs sporadically, bisection is impossible. > > I hope you can fix the kernel stack issue. > > Thanks, > Christian > > [1] https://en.wikipedia.org/wiki/AmigaOne_X1000 > > [2] https://raw.githubusercontent.com/chzigotzky/kernels/refs/heads/main/patches/X1000/preempt_v1.patch > > [3] https://raw.githubusercontent.com/chzigotzky/kernels/refs/heads/main/patches/X1000/kvm_powerpc.patch > > [4] https://raw.githubusercontent.com/chzigotzky/kernels/refs/heads/main/patches/X1000/Kconfig.preempt.patch > > [5] Kernel config: https://raw.githubusercontent.com/chzigotzky/kernels/31c064092e3aab0875c47d44838443c9515b2970/configs/x1000_defconfig >