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Fri, 29 May 2026 13:52:31 +0000 (GMT) Received: from [9.61.247.63] (unknown [9.61.247.63]) by smtpav04.wdc07v.mail.ibm.com (Postfix) with ESMTP; Fri, 29 May 2026 13:52:31 +0000 (GMT) Message-ID: Date: Fri, 29 May 2026 19:22:29 +0530 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-GB To: bpf Cc: "netdev@vger.kernel.org" , linuxppc-dev , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , LKML , Madhavan Srinivasan , Hari Bathini , Saket Kumar Bhaskar From: Venkat Rao Bagalkote Subject: [mainline] selftests/bpf: struct_ops_assoc test hangs indefinitely on PowerPC Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: NO92FGkBQqdUYgI90IARzL4agbYXgZUZ X-Proofpoint-GUID: NO92FGkBQqdUYgI90IARzL4agbYXgZUZ X-Authority-Analysis: v=2.4 cv=XqfK/1F9 c=1 sm=1 tr=0 ts=6a199a26 cx=c_pps a=GFwsV6G8L6GxiO2Y/PsHdQ==:117 a=GFwsV6G8L6GxiO2Y/PsHdQ==:17 a=IkcTkHD0fZMA:10 a=NGcC8JguVDcA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=Y2IxJ9c9Rs8Kov3niI8_:22 a=VnNF1IyMAAAA:8 a=qbdj7LMxSyKbK4Z0454A:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNTI5MDEzNiBTYWx0ZWRfX7t+dZM0TSu5D 3qAm0nC6CYXaMArtVipIak4kI6TbSkgJTcUF8FTyggDm5F6ze67SbfvN2+K5my5klbCCTzlpxpq /zyJ0Ttt0Vxkh8DiMCBtlByjgl4PDLBdUuiSeofXNH+fZOkxV9Z8vywhIH0QJthhoqcmtoWNFxd 1X/S2LbXoMirr9av38B4ThsHPNMZCLgnEAzUDU9NA+rLmR/5B/cX6gVAwqjR00tg83wivQ3FWXE Bttr7NJZZoik0fpcDBkBSIx2A08v26mcG348abhe7D4fKmNHcT1mh3fG885boE0AUwwCIUcbyhH 4tgaJ0O9xk+Nn34vGqxonLtASVVG0GU7HIiEDmj5BwhgGW3Lua9sNMIyuA1OHePPFkK7YS5ePDc FjeqetL9sjkjhe/K5pCVS7Y6Wy9cSWwPTeAO1J/Ta6Lca2XQv5ZQBcbVX1IpVK5T5RfaM6rCJun trbdtQsZSdMeK1gOtLQ== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-05-29_03,2026-05-28_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 spamscore=0 impostorscore=0 adultscore=0 phishscore=0 priorityscore=1501 lowpriorityscore=0 bulkscore=0 suspectscore=0 clxscore=1011 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605210000 definitions=main-2605290136 Greetings!!! The struct_ops_assoc/st_ops_assoc_in_timer selftest hangs indefinitely on PowerPC, spinning in sched_yield() until watchdog timeout. **Test Failure:** ./test_progs -t struct_ops_assoc WATCHDOG: test case struct_ops_assoc/st_ops_assoc_in_timer executes for 10 seconds... WATCHDOG: test case struct_ops_assoc/st_ops_assoc_in_timer executes for 120 seconds, terminating with SIGSEGV #445     struct_ops_assoc:FAIL **Architecture:** PowerPC 64-bit (ppc64le) **Kernel:** 7.1.0-rc5-00149-g8fde5d1d47f6 **Symptoms:** Test hangs indefinitely in infinite loop, repeatedly calling sched_yield(): Stack trace: ./test_progs(crash_handler+0x34) linux-vdso64.so.1(__kernel_sigtramp_rt64+0x0) /lib64/libc.so.6(__sched_yield+0x2c)  ← stuck here ./test_progs() [0x105ae220] ./test_progs(test_struct_ops_assoc+0x88) ./test_progs(main+0x7ac) If you happen to fix this, please add below tag. Reported-by: Venkat Rao Bagalkote Regards, Venkat.