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Thu, 13 Aug 2026 11:06:53 +0000 (GMT) Received: from localhost (unknown [9.111.42.87]) by smtpav04.fra02v.mail.ibm.com (Postfix) with ESMTPS; Thu, 13 Aug 2026 11:06:53 +0000 (GMT) Date: Thu, 13 Aug 2026 13:06:52 +0200 From: Vasily Gorbik To: Mikhail Zaslonko , Alexander Egorenkov , Heiko Carstens Cc: linux-s390@vger.kernel.org Subject: [PATCH 0/2] s390/ipl: Fix missing re-IPL parm blocks handling in dump paths Message-ID: Precedence: bulk X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline X-Patchwork-Bot: notify X-TM-AS-GCONF: 00 X-Authority-Analysis: v=2.4 cv=RsP16imK c=1 sm=1 tr=0 ts=6a7da552 cx=c_pps a=GFwsV6G8L6GxiO2Y/PsHdQ==:117 a=GFwsV6G8L6GxiO2Y/PsHdQ==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=RzCfie-kr_QcCd8fBx8p:22 a=NBBEsAxjE9aso72u2tIA:9 a=QEXdDO2ut3YA:10 X-Proofpoint-GUID: _fIu0T3bE1xwYBQc35XI2ty0kfsCRqck X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODEzMDA3NyBTYWx0ZWRfX3nAQbfOP6EbZ k3tA+f2h0ZSLq7d3XhXMGneTasNiKIyczpsDkAvZq7VTfNs9X9jgBbLL10tHxiktifF+mY5SUcZ cVGMazv/ar5gzug6KDlKzpgNoiCK1tofirJ9Ywg741TdMBs8pc8+9ic/R5d3hBQqeLP3vCHZjzz ofe8w0aAM8H1xfY3DuHhELDwW/36aKtX6Ta0wfbMJs/SrALfv1KcH35u871c4P9xJiXB7mvi9tE K19I340yJZJgZD02OoLtn5k54Qs8IU6ZUQqc1Ev7Bvl1BMkgNV8hRRieNsgkI6dOcT7Vs+z+Tht NwpoV5if0twRKc3mL3B8yg4KbQMuDTnP+qwQLwD9+CDHYFtJHewdP6lzyHuTxpeMV0HbT3bp6Vr 9tp3w6ey8a8M8PyC8PbS0AYAanya3dFM56kvKplxDRH3jIfudmmSdEQKCpJb0R7TLz8AwmmMZyl b8fIQWiIhdTVFc5w69g== X-Proofpoint-ORIG-GUID: _fIu0T3bE1xwYBQc35XI2ty0kfsCRqck X-Proofpoint-Spam-Info: AW1haW4tMjYwODEzMDA3NyBTYWx0ZWRfX5xeFc+dPC71Z P03f74oytXzb/FqnRN74qQtTXCwjwdo0oUSY5bPOLVyDGyVAQzgjoVRjMvTBqnYtKyhh5mHnKuy y7nJmFZLJ6KdlEFvF9tdF/0HRABjTEw= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-13_03,2026-08-12_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 impostorscore=0 suspectscore=0 clxscore=1015 malwarescore=0 phishscore=0 adultscore=0 lowpriorityscore=0 priorityscore=1501 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608130077 HMC FTP boot and QEMU direct kernel boot do not provide an IPL parameter block. This can lead to NULL pointer dereferences during kdump and stand-alone dump processing. Fix the kdump and stand-alone dump paths separately. kdump continues without a re-IPL parameter block, while the stand-alone dumper completes the dump and halts. Vasily Gorbik (2): s390/ipl: Fix NULL deref in kdump without re-IPL parm block s390/ipl: Fix NULL deref in dump_reipl without re-IPL parm block arch/s390/kernel/ipl.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) -- 2.53.0