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Wed, 08 Apr 2026 04:28:49 +0000 Received: from smtpav03.fra02v.mail.ibm.com (smtpav03.fra02v.mail.ibm.com [10.20.54.102]) by smtprelay01.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 6384Sl8f62718314 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 8 Apr 2026 04:28:47 GMT Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 646D320043; Wed, 8 Apr 2026 04:28:47 +0000 (GMT) Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 51B5920040; Wed, 8 Apr 2026 04:28:45 +0000 (GMT) Received: from Linuxdev.bl1-in.ibm.com (unknown [9.123.3.0]) by smtpav03.fra02v.mail.ibm.com (Postfix) with ESMTP; Wed, 8 Apr 2026 04:28:45 +0000 (GMT) From: Madhavan Srinivasan To: mpe@ellerman.id.au, npiggin@gmail.com, chleroy@kernel.org, tglx@kernel.org, jirislaby@kernel.org, Chen Ni Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] powerpc/44x/uic: Consolidate chained IRQ handler install/remove Date: Wed, 8 Apr 2026 09:58:44 +0530 Message-ID: <177562236424.1381144.12015372455463712391.b4-ty@linux.ibm.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260119063507.940782-1-nichen@iscas.ac.cn> References: <20260119063507.940782-1-nichen@iscas.ac.cn> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; 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This creates a theoretical race window where an > interrupt could fire after the handler is set but before the data is > assigned, leading to a NULL pointer dereference. > > Replace the two calls with irq_set_chained_handler_and_data() to set > both the handler and its data atomically under the irq_desc->lock. > > [...] Applied to powerpc/next. [1/1] powerpc/44x/uic: Consolidate chained IRQ handler install/remove https://git.kernel.org/powerpc/c/5716cacebac887b45091c658caa6d1ea25c238dc cheers