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Mon, 6 Jul 2026 17:26:37 +0000 (GMT) Message-ID: <0e48a230-3b0a-4526-824a-1b72443252d2@linux.ibm.com> Date: Mon, 6 Jul 2026 19:26:37 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/2] s390/vdso: Pass --eh-frame-hdr to the linker To: Jens Remus , linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Sven Schnelle References: <20260706151909.103539-1-jremus@linux.ibm.com> <20260706151909.103539-2-jremus@linux.ibm.com> Content-Language: en-US From: Ilya Leoshkevich In-Reply-To: <20260706151909.103539-2-jremus@linux.ibm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Info: AW1haW4tMjYwNzA2MDE3NCBTYWx0ZWRfXxsPQUhJoKb93 Ybr8tK3baRd9P1Y9/KNPbh/BySKiY5ZT32oR6HZmhsv6+a0uAtIpi94WG5TIAaDsdfl8I0SdgqY t0710gvYEEI/3OfqSBJeDyZcL1tQnGA= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzA2MDE3NCBTYWx0ZWRfX1YbtUNPqs41K TG58e2158vfq7i9934OgJ8ZNRkc/3c0T/o05tnG8fbQB7brW1ryqilhp3JNnx9kvZ4LRTswnyAO P6iw/Rc0MdHEqJ57T7KoGms/HpBuKgXIpTnPZOvkTg1ILf0pmnZkLiRurSZqzlo++4qWAtHUawu ZKVEjM25z8fI5e6WvyXU+beUVm2NNrQTIq07HTcuzx9PXJIhI3nrNAX64QB3Z+qH54i+gkOvZJo j17EwbClJgda0d8m1uFPBJCfFHzxcsxNsr70jDfp63r9xKUfJoHYPw+lqjGLnXI0ewohBro0zLj q7upOzdPRWTaCtwRax1b4XUqBYJ6my1hXOtEJcr49Oo9heBo/BZ+lcX3lC9EiHSmLExC3pYfaOq 42yiZbxh/Ndt2Kx8dMOMGccPj57rpuy70M4qaCHAI/VfnRNOVBEnBy4oFwFS4ainonC+e4OTzCV eIyKplnCQ5JbHc3D7Ig== X-Proofpoint-GUID: BT4dHB7Gzf8nD45956sDGtcPE5D0rHHK X-Authority-Analysis: v=2.4 cv=Oot/DS/t c=1 sm=1 tr=0 ts=6a4be553 cx=c_pps a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=uAbxVGIbfxUO_5tXvNgY:22 a=VnNF1IyMAAAA:8 a=7scW1GgyRHmQmRYzcv4A:9 a=QEXdDO2ut3YA:10 X-Proofpoint-ORIG-GUID: BT4dHB7Gzf8nD45956sDGtcPE5D0rHHK 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 bulkscore=0 lowpriorityscore=0 clxscore=1015 impostorscore=0 phishscore=0 malwarescore=0 suspectscore=0 spamscore=0 adultscore=0 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607060174 On 7/6/26 17:19, Jens Remus wrote: > Commit 2b2a25845d53 ("s390/vdso: Use $(LD) instead of $(CC) to link > vDSO") accidentally broke the GNU_PTR_EH_FRAME program table entry in > the vDSO, causing it to be empty: > > $ readelf --program-headers arch/s390/kernel/vdso/vdso.so > ... > Program Headers: > Type Offset VirtAddr PhysAddr > FileSiz MemSiz Flags Align > ... > GNU_EH_FRAME 0x0000000000000000 0x0000000000000000 0x0000000000000000 > 0x0000000000000000 0x0000000000000000 0x8 > ... > > Originally, the compiler would implicitly add --eh-frame-hdr when > invoking the linker, but when this Makefile was converted from invoking > the linker via the compiler, to invoking it directly, the option was > missed. > > This is the s390 variant of x86 commit cd01544a268a ("x86/vdso: Pass > --eh-frame-hdr to the linker"). > > Fixes: 2b2a25845d53 ("s390/vdso: Use $(LD) instead of $(CC) to link vDSO") > Signed-off-by: Jens Remus > --- > arch/s390/kernel/vdso/Makefile | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) Reviewed-by: Ilya Leoshkevich