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Mon, 17 Aug 2026 17:37:17 +0000 (GMT) Received: from localhost (unknown [9.111.2.7]) by smtpav04.fra02v.mail.ibm.com (Postfix) with ESMTPS; Mon, 17 Aug 2026 17:37:17 +0000 (GMT) Date: Mon, 17 Aug 2026 19:37:16 +0200 From: Vasily Gorbik To: Mikhail Zaslonko , Alexander Egorenkov , Heiko Carstens Cc: linux-s390@vger.kernel.org Subject: Re: [PATCH 0/2] s390/ipl: Fix missing re-IPL parm blocks handling in dump paths Message-ID: References: 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 In-Reply-To: X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODE3MDEzNCBTYWx0ZWRfX0UGvbD3cYID6 cmoALKUM/wBUcGPStLYIDcRdCEn8yajkF9W5tLVeeicFrKLjUMBmD80vV7CkvL79WNM4UKq1RMz 2Mlys38cbI+S7JeXoy/hKJjnZoHerBhjqfjkq81CJ6uOS9ghkioLj5rim7XzTBLt9Meot4ivOs+ WAeC2NP34qkl8I2S0mtnGnrUSSjsrJOXw7xEZlfv81RwcSvRDicTH9g8LBjVOKJeAH0AutnD8po jYK4Vr6inwFjzlBmNZQi0L0DhZBeRXT1wtXPt0D4/yMGzhDMeNNt9LoOfBIBUC9OMaqKcWJBwXx DgbMURM7cKr1aufJz4HaItmKE9zI5qfeeOItzP8ps6WpRHZ3QSwtmFTtw2guZZvrBul8Nu9VSwv cvcBLCOxjXkZRYr0TV8hSZocWoPPOGobRz5i71ZDEUNSBbQFVLviIrfqtdnBuFMCHKMevWjTleU zgleko9j85NUHgp2nhg== X-Proofpoint-ORIG-GUID: 7o4uLmbnMKmBtJbhlW5rXCoSfR2QDDLK X-Proofpoint-Spam-Info: AW1haW4tMjYwODE3MDEzNCBTYWx0ZWRfX0LqRQ11BGYtE Lnps7PrZDjHCAHULJ5GJOztkx38wXVufuwVH3KB/BiosRaNc20te4h2/ELI2MCWjJFlRt1AHHkF cw7dp0U5dOFd09/Y3E7DuLlS7xJHbdE= X-Authority-Analysis: v=2.4 cv=DJe/JSNb c=1 sm=1 tr=0 ts=6a8346d3 cx=c_pps a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=uAbxVGIbfxUO_5tXvNgY:22 a=_wmGLrF05a6c7XaiEVkA:9 a=QEXdDO2ut3YA:10 X-Proofpoint-GUID: 7o4uLmbnMKmBtJbhlW5rXCoSfR2QDDLK 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=2026-08-17_02,2026-08-12_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 impostorscore=0 spamscore=0 clxscore=1015 bulkscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608170134 On Thu, Aug 13, 2026 at 01:06:52PM +0200, Vasily Gorbik wrote: > 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(-) Applied