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Thu, 22 Jun 2023 08:01:51 +0000 (GMT) Content-Type: text/plain; charset=us-ascii Subject: Re: [6.4.0-rc7-next-20230620] Boot failure on IBM Power LPAR From: Sachin Sant In-Reply-To: <87edm5pj4u.fsf@mail.lhotse> Date: Thu, 22 Jun 2023 13:31:40 +0530 Message-Id: <568F6E65-DBDF-43F2-8B3E-E783AE5A2B6C@linux.ibm.com> References: <87edm5pj4u.fsf@mail.lhotse> To: Michael Ellerman X-Mailer: Apple Mail (2.3731.600.7) X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: HzhqrMOXasp1JCtoz2C7lvM3NEZbOct9 X-Proofpoint-GUID: HzhqrMOXasp1JCtoz2C7lvM3NEZbOct9 Content-Transfer-Encoding: quoted-printable X-Proofpoint-UnRewURL: 0 URL was un-rewritten MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-06-22_04,2023-06-16_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 clxscore=1015 impostorscore=0 suspectscore=0 lowpriorityscore=0 adultscore=0 mlxlogscore=980 bulkscore=0 mlxscore=0 phishscore=0 priorityscore=1501 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2305260000 definitions=main-2306220066 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-mm@kvack.org, linuxppc-dev Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" >> The problem was introduced in 6.4.0-rc7-next-20230619. I tried git bisec= t, but unsure of the >> result reported by it. Bisect points to following patch >>=20 >> # git bisect bad >> 70c94cc2eefd4f98d222834cbe7512804977c2d4 is the first bad commit >> commit 70c94cc2eefd4f98d222834cbe7512804977c2d4 >> Merge: 48f5ee5c48c3 3fe08f7d5e80 >> Author: Stephen Rothwell >> Date: Tue Jun 20 09:43:25 2023 +1000 >>=20 >> Merge branch 'mm-everything' of git://git.kernel.org/pub/scm/linux/ke= rnel/git/akpm/mm >> # Conflicts: >> # mm/mmap.c >=20 > Usually bisect pointing to a merge means something has gone wrong with > the bisect. It's not impossible for a merge to be the cause of a bug, > but IME it's rare. >=20 I have tried the bisect 3 times and the result was same. It always points to this merge commit. Is there anything else I can try to help debug this issue? -Sachin=