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Fri, 2 Oct 2026 15:20:56 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.87.85.9]) by smtpav03.fra02v.mail.ibm.com (Postfix) with ESMTP; Fri, 2 Oct 2026 15:20:56 +0000 (GMT) From: Heiko Carstens To: Alexander Gordeev , Sven Schnelle , Vasily Gorbik , Christian Borntraeger Cc: linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org Subject: [PATCH 0/2] s390: Improve handling for stack register corruption Date: Fri, 2 Oct 2026 17:20:53 +0200 Message-ID: <20261002152055.3305184-1-hca@linux.ibm.com> X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Info: AW1haW4tMjYxMDAyMDA2MCBTYWx0ZWRfX/3QVg+2Ww8Kb TG1c+dUcdk7vIjwr76J0NE4kJdFb9uvOlYkwLxsRBsDPzO+VCZBJh8bBRsWcVw0Da6rDuYlyCCV BnOso1igsu6ELnKr60VeDc1hXxk+9rc= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDAyMDA2MCBTYWx0ZWRfX2lJ219fggHmF LBzCUS7bM8kzlte+dpK9T9iU93wrka6jMlEhpceoGy8noBsx6QOADBcDXeHJp8Yriv9xu6/rhDN gtQBH/oqe75TCcD+EMkfoKO5BkJCpauLG7n1vVgbGT7oeHN4OQdgeSgzVD22MpY0piGMK3+MvzV /kxSgAWoucImkcBTqZqCZ4QIssHClMeHAn5sXLdh6QPH1GaJoYknHG2t/0df4/UHriDysgSUr+z 0uBio8m1PR6UQopWso6U+Z3OMaMcZEAEqdKB2cxr4OL2MRmiSG6/Lo8RlZEs8q5Koxd9PFv5kkg 8PRWOT313k5IZvs8CmxvaSvW+Nf+aLR4OQhOHMl2nCOjamw1wQoKbrdPgd1hfH7dlvDV9Y3ij2M nbmq5+ADcGFyd+KOggFSQTnXYqWk6BKtjoq4/41oqvD+iN+lLeyUm+tRQr9TTJQnLR+f0v/2oEA wJEiAHWgFcTtszFbdAg== X-Proofpoint-GUID: ARlOYH-0JPwJ41ceWszPSyhfJZsCuKGp X-Authority-Analysis: v=2.4 cv=RKcmjIi+ c=1 sm=1 tr=0 ts=6abfcbdd cx=c_pps a=5BHTudwdYE3Te8bg5FgnPg==:117 a=5BHTudwdYE3Te8bg5FgnPg==:17 a=660iZSQnnn4A:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=iQ6ETzBq9ecOQQE5vZCe:22 a=AI1S0lelkytbrRr2WCgA:9 X-Proofpoint-ORIG-GUID: ARlOYH-0JPwJ41ceWszPSyhfJZsCuKGp 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=2026-10-02_04,2026-10-01_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 priorityscore=1501 spamscore=0 bulkscore=0 impostorscore=0 adultscore=0 lowpriorityscore=0 suspectscore=0 malwarescore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2610020060 Two small improvements: - Copy last breaking event address to correct pt_regs location - Save lowcore on invalid kernel stack to have more accurate data for crash dump analysis Thanks, Heiko Heiko Carstens (2): s390/entry: Last breaking event vs invalid kernel stack s390/entry: Save lowcore on invalid kernel stack arch/s390/kernel/entry.S | 17 ++++++++++++++++- arch/s390/kernel/entry.h | 4 ++++ arch/s390/kernel/traps.c | 6 ++++++ 3 files changed, 26 insertions(+), 1 deletion(-) -- 2.53.0