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Fri, 6 Nov 2026 06:07:06 +0100 (CET) Subject: [PREEMPT] Kernel panic - not syncing: stack-protector: Kernel stack is corrupted To: Shrikanth Hegde 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> From: Christian Zigotzky Organization: A-EON Open Source Message-ID: <00f8e9aa-c3ec-1911-d81f-291d3c6ae8f0@xenosoft.de> Date: Fri, 6 Nov 2026 06:07:06 +0100 X-Mailer: BrassMonkey/35.0.2 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 In-Reply-To: <4FED0F6E-890F-4482-99F3-39D7520C48FE@xenosoft.de> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit 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 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 -- Sent with BrassMonkey 35.0.2 (https://github.com/chzigotzky/Web-Browsers-and-Suites-for-Linux-PPC/releases/tag/BrassMonkey_35.0.2)