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Mon, 18 May 2026 05:43:45 +0000 (GMT) Received: from Linuxdev (unknown [9.43.43.25]) by smtpav01.fra02v.mail.ibm.com (Postfix) with ESMTP; Mon, 18 May 2026 05:43:45 +0000 (GMT) From: Madhavan Srinivasan To: linuxppc-dev@lists.ozlabs.org, Sayali Patil Cc: linux-kernel@vger.kernel.org, Ritesh Harjani , Mahesh Salgaonkar , sshegde@linux.ibm.com, chleroy@kernel.org Subject: Re: [PATCH v2] powerpc/time: Remove redundant preempt_disable|enable() calls from arch_irq_work_raise() - part1 Date: Mon, 18 May 2026 11:13:44 +0530 Message-ID: <177908291164.287704.946864101583283799.b4-ty@linux.ibm.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260513081413.222490-1-sayalip@linux.ibm.com> References: <20260513081413.222490-1-sayalip@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Authority-Analysis: v=2.4 cv=ffCdDUQF c=1 sm=1 tr=0 ts=6a0aa719 cx=c_pps a=5BHTudwdYE3Te8bg5FgnPg==:117 a=5BHTudwdYE3Te8bg5FgnPg==:17 a=IkcTkHD0fZMA:10 a=NGcC8JguVDcA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=U7nrCbtTmkRpXpFmAIza:22 a=VwQbUJbxAAAA:8 a=5fE_oDf0d45QwMV1dU8A:9 a=QEXdDO2ut3YA:10 a=zZCYzV9kfG8A:10 X-Proofpoint-ORIG-GUID: cM5D_xOJhpqxO_36MybZQGzX3kPENfcl X-Proofpoint-GUID: 2j1hzYoP_Y5VHTh1Zkvci9TWHFjApWcG X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNTE4MDA1MSBTYWx0ZWRfX3fkAKPd7D8TC Rm5THJ20ykhgL5uWAUJFy4Cwdeo53EVtJEWeD7r+bIIspBjs+PXp+VGtqlQDsaXIeg0dPt8Ivmn ElSeYtlq4ALnAYp0Bw1rGvSCRlm8RxeqXekq3LnNrNt1fft0r+Lga85M77uRqCl9GYsRg8mWiHU i01rFcvce7FPhlCXo2HPfR4lROnfUV5R/2aOKDFO9ZkD2jU8OOPyl7G/iHsM8CW4Cwedwkhvadf DfbOf2saRhhgG6BMwo88V3iDFWUWYXR423sd80g9oaPIbPSxXbvsKGYrqhWd37jtn+NQyO8LFJv OlewwMBiWGBxl38+pn7rlvmCsJ0WEC4GNd5iLtxRXaEBD4maBI2no5+KSkMclF9e3Kc2G3VIvjd dcY5Du+ruSTrK6MToEU1gF4sy7g6EzdsYokxWbmy+EHyPM3gFWWh95IR2iP06FMEHuMxanvVZ4z L2Saj439E93New3xKkA== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-05-18_01,2026-05-15_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 spamscore=0 phishscore=0 suspectscore=0 adultscore=0 clxscore=1015 impostorscore=0 lowpriorityscore=0 bulkscore=0 malwarescore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605130000 definitions=main-2605180051 On Wed, 13 May 2026 13:44:13 +0530, Sayali Patil wrote: > A kernel panic is observed when handling machine check exceptions from > real mode. > > BUG: Unable to handle kernel data access on read at 0xc00000006be21300 > Oops: Kernel access of bad area, sig: 11 [#1] > MSR: 8000000000001003 CR: 88222248 XER: 00000005 > CFAR: c00000000003ffc4 DAR: c00000006be21300 DSISR: 40000000 IRQMASK: 0 > NIP [c000000000029e40] arch_irq_work_raise+0x10/0x70 > LR [c00000000003ffc8] machine_check_queue_event+0xa8/0x150 > Call Trace: > [c0000000179d3c70] [c00000000003ff64] machine_check_queue_event+0x44/0x150 > [c0000000179d3d30] [c0000000000084e0] machine_check_early_common+0x1f0/0x2c0 > > [...] Applied to powerpc/fixes. [1/1] powerpc/time: Remove redundant preempt_disable|enable() calls from arch_irq_work_raise() - part1 https://git.kernel.org/powerpc/c/31467b23823ffec1f6fff407f8e3ca9af8b7491a cheers