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Mon, 6 Jul 2026 15:19:10 +0000 (GMT) From: Jens Remus To: linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Jens Remus , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Sven Schnelle , Ilya Leoshkevich Subject: [PATCH 2/2] s390/vdso: Use symbolic constants for the PHDR permission flags Date: Mon, 6 Jul 2026 17:19:09 +0200 Message-ID: <20260706151909.103539-3-jremus@linux.ibm.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260706151909.103539-1-jremus@linux.ibm.com> References: <20260706151909.103539-1-jremus@linux.ibm.com> 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-Authority-Analysis: v=2.4 cv=KsJ9H2WN c=1 sm=1 tr=0 ts=6a4bc774 cx=c_pps a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17 a=RAioF0-LDSMA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=iQ6ETzBq9ecOQQE5vZCe:22 a=VnNF1IyMAAAA:8 a=Mk8Ik3_Xw2e2UI5hhpgA:9 X-Proofpoint-Spam-Info: AW1haW4tMjYwNzA2MDE1NiBTYWx0ZWRfX+j8V3ZpecvzI tBSFi0KUnQJF2YAndylSa0SILOVPNOjob4k8yBfaYYMmumFfQdXw62FUi2+LTeXuC4CyvKLse0z SQlZs6ij2f22MVxddyR0RdAt+EqcMGs= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzA2MDE1NiBTYWx0ZWRfX0Hrh3DkgvOqo iyVRFP8vzqMMIOw0UL4NlVcxt8OZOK3wUmVAPlE+Fwkvq8rdN3umIFB59M3h9Ee8ei4jkwD9/Wq gRdhQ+PbZkfFyeEEOIk4rDo5JI294yyVDL8yGiqY20WlWIHInJ+jiVaEyNwcQ3atMWUAeYItK8y f/ew1Gr0T1sE7T/PRldBGyN/cdl0GX8s2MUBZ5T2X4Ok33VEarD+Bz3HrHBke35umVEMdbjinN5 eT0wO1wQSZiZIRnDiT3V1IbaFwBLBT0CaY8nD7v6sMmXfenKvktNLMfkWF1j90cNLV+5xLageTo 0RnjMriFt8mvrYJdfr45/KWLjA+F4Pf7kRytn/XEZTh8nb+ra8XUDTfFajLdkrdBfJlPZ5zBCJ0 CwJ4LTBQP/zoGWUp+JET8AXajwkq99/8u5zkYieo+AiAZJkc9g9m4wGMY1WKsHtbtB+Zz+AIT9c Wg96+xV4yRdFAJWzHPQ== X-Proofpoint-ORIG-GUID: eiA2AlY-MQ0dU8FoWNJAxOrpKKxhmEuC X-Proofpoint-GUID: eiA2AlY-MQ0dU8FoWNJAxOrpKKxhmEuC X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-06_02,2026-07-06_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 malwarescore=0 spamscore=0 adultscore=0 clxscore=1015 suspectscore=0 lowpriorityscore=0 priorityscore=1501 bulkscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607060156 While at it explicitly specify GNU_EH_FRAME PHDR to be read-only. Inspired by x86 commit 8717b02b8c03 ("x86/entry/vdso: Include GNU_PROPERTY and GNU_STACK PHDRs"). Signed-off-by: Jens Remus --- arch/s390/kernel/vdso/vdso.lds.S | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/arch/s390/kernel/vdso/vdso.lds.S b/arch/s390/kernel/vdso/vdso.lds.S index 7bec4de0e8e0..35ea7ede06c0 100644 --- a/arch/s390/kernel/vdso/vdso.lds.S +++ b/arch/s390/kernel/vdso/vdso.lds.S @@ -82,12 +82,16 @@ SECTIONS * We must supply the ELF program headers explicitly to get just one * PT_LOAD segment, and set the flags explicitly to make segments read-only. */ +#define PF_R FLAGS(4) +#define PF_RW FLAGS(6) +#define PF_RX FLAGS(5) + PHDRS { - text PT_LOAD FILEHDR PHDRS FLAGS(5); /* PF_R|PF_X */ - dynamic PT_DYNAMIC FLAGS(4); /* PF_R */ - note PT_NOTE FLAGS(4); /* PF_R */ - eh_frame_hdr PT_GNU_EH_FRAME; + text PT_LOAD PF_RX FILEHDR PHDRS; + dynamic PT_DYNAMIC PF_R; + note PT_NOTE PF_R; + eh_frame_hdr PT_GNU_EH_FRAME PF_R; } /* -- 2.53.0