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Marchesi" , Beau Belgrave , Linus Torvalds , Andrew Morton , Florian Weimer , Kees Cook , "Carlos O'Donell" , Sam James , Dylan Hatch , Borislav Petkov , Dave Hansen , David Hildenbrand , "H. Peter Anvin" , "Liam R. Howlett" , Lorenzo Stoakes , Michal Hocko , Mike Rapoport , Suren Baghdasaryan , Vlastimil Babka , Heiko Carstens , Vasily Gorbik References: <20260429114355.6c712e6a@gandalf.local.home> <20260429145512.461e09fe@gandalf.local.home> <20260429145815.69dcb1c0@gandalf.local.home> <20260429160344.7e5510e9@gandalf.local.home> Content-Language: en-US From: Jens Remus Organization: IBM Deutschland Research & Development GmbH In-Reply-To: <20260429160344.7e5510e9@gandalf.local.home> 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=CIIamxrD c=1 sm=1 tr=0 ts=69f381fe cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=IkcTkHD0fZMA:10 a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=RzCfie-kr_QcCd8fBx8p:22 a=VnNF1IyMAAAA:8 a=meVymXHHAAAA:8 a=0MvmVg10__VCTnNSAJcA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=2JgSa4NbpEOStq-L5dxp:22 X-Proofpoint-ORIG-GUID: -hSW_O5p2nSOB1nch67Bj0CeTTFs7ILS X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNDMwMDE2OSBTYWx0ZWRfX8VRHONAa71JN ctSfz7kejmYYahGVRpvYD3PEvdYFOR67e/o/SmGX4PGf76uGJAn6CP6VyDJ/GTRiGBMaZNqNtgC KeerdWkp7RHI1fGlAMlEdUjaTnmO0kovUOF3L960CFaspc2OyjOcxEwsRZs8B8jXvRlkateebZi RiUJOoSvfCTNXHz/4g//0WQ1qDyyB8ZVeiGQi2JXNW5L7e8FeZrUDwosaD946jUNvQWxtZZjkUQ q/O+v8NRGXq1a3dSYX5DLWObgk4TaXm4HyOQtYvSghIMveOHkcSUt2PFtR+7GAlTRzjtidpG6bo ihdhEwijBzG+Cx3StzbIVG+wGt4/Zv0YpNlT+J9aT8udyLRIpmppvzLOnCjjigL3JWJttsZpbn7 ru9sV99vvaRv3NtqfEx20uA+c/Qwh1qwgBu4+SyxQUyLs75Si1OYtORx8rICoSHXEH50D0J6234 wTiGxEv2yb68rQw4Q7w== X-Proofpoint-GUID: RvbVqX0okIcRgVcA2lin9pgq85mKLEg8 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=2026-04-30_04,2026-04-30_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 phishscore=0 malwarescore=0 suspectscore=0 adultscore=0 impostorscore=0 lowpriorityscore=0 clxscore=1015 bulkscore=0 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2604200000 definitions=main-2604300169 On 4/29/2026 10:03 PM, Steven Rostedt wrote: > On Wed, 29 Apr 2026 14:58:15 -0400 > Steven Rostedt wrote: > >>> If the main executable doesn't have a sframe section, I don't see why this >>> shouldn't be allowed to add one. >> >> The address is added via mtree_insert_range() which states it will return >> -EEXISTS if the range is occupied. > > I confirmed this. I changed the test program to load its own sframe section > again, and it errors out with -EEXISTS. Should an executable be allowed to remove its main executable sframe section? Currently the kernel takes care of registering/unregistering that. Regards, Jens -- Jens Remus Linux on Z Development (D3303) jremus@de.ibm.com / jremus@linux.ibm.com IBM Deutschland Research & Development GmbH; Vorsitzender des Aufsichtsrats: Wolfgang Wendt; Geschäftsführung: David Faller; Sitz der Gesellschaft: Ehningen; Registergericht: Amtsgericht Stuttgart, HRB 243294 IBM Data Privacy Statement: https://www.ibm.com/privacy/