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Mon, 1 Jun 2026 06:10:11 +0000 (GMT) Message-ID: Date: Mon, 1 Jun 2026 11:40:10 +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 From: Venkat Rao Bagalkote Subject: [linux-next20260529] WARNING: kernel/workqueue.c:5855 at __alloc_workqueue+0x62c/0x690 To: Tejun Heo , jiangshanlai@gmail.com, hch@lst.de, sagi@grimberg.me, kbusch@kernel.org Cc: LKML , linux-nvme@lists.infradead.org, marco.crivellari@suse.com, Nilay Shroff Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-ORIG-GUID: maXBk7fbeGQpAYKVo8GjUQt83VAWa0q9 X-Proofpoint-GUID: iy5I3e4f-_D3HR-GZCRWtq1wGo4gX6Yt X-Authority-Analysis: v=2.4 cv=bcVbluPB c=1 sm=1 tr=0 ts=6a1d2249 cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=IkcTkHD0fZMA:10 a=FelO9ux0wxsA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=uAbxVGIbfxUO_5tXvNgY:22 a=VnNF1IyMAAAA:8 a=paeGcJy66i2UgEBO6U0A:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjAxMDA1OSBTYWx0ZWRfXwbcroq9z+O4h jizA8kIRqjYmlf3fGArO7LzS+YvZv4A9xR1gfzDgU+x7hhuVXazZNOykEWHqGMhZjAzxPh5Xy02 ksLyRitwz4ai023WS2VLcRxATZIWgZokTgc2qXFE2JGOVFPV4y09FD6p/ICVjKy8VJavwe0PWD3 5ZuPH+khFhn27nqVXUJZrxzxhAcsgApnTQgh90DxlJ/DiqVESflcm7/YV3jpUDpwXUMR2fBcpcZ MrzFH15ZahI+Tz8MgqHEs8cBFdopUZy4O/kH0yXw63SB/bkedIIhwHg359FqYx6JEvvE7nrbYT6 MIg+vIJqVVew2Fs8C1VBaWvOLMw1nWVSjZiijyth52nzHtC/vzhEdtk04GmdNo/+IMfepaUSeAO lX4pe5JCeqHBkUhipECkB2BtbV1IG84DduqzhF+X4ORuu9pKKSjUVhmM5rOkTeBpBqzRqhxzI03 FrTozuLd3GZvNmEFrSQ== 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=2026-06-01_01,2026-05-28_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 clxscore=1011 adultscore=0 priorityscore=1501 phishscore=0 lowpriorityscore=0 bulkscore=0 malwarescore=0 spamscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605210000 definitions=main-2606010059 Greetings!!! I am observing following boot warning, appears to be triggered by recent WQ changes. Test environment:   Kernel: linux-next-20260529 (7.1.0-rc5-next)   Arch: powerpc (Power11 / pSeries) Warnings: [    1.933519] ------------[ cut here ]------------ [    1.933523] workqueue: nvme_tcp_wq is using neither WQ_PERCPU or WQ_UNBOUND. Setting WQ_PERCPU. [    1.933531] WARNING: kernel/workqueue.c:5855 at __alloc_workqueue+0x62c/0x690, CPU#19: modprobe/573 [    1.933539] Modules linked in: nvme_tcp(E+) sd_mod(E) nvme_fabrics(E) nvme_core(E) ibmvscsi(E) ibmveth(E) scsi_transport_srp(E) dm_mirror(E) dm_region_hash(E) dm_log(E) dm_multipath(E) dm_mod(E) [    1.933553] CPU: 19 UID: 0 PID: 573 Comm: modprobe Tainted: G           E       7.1.0-rc5-next-20260529 #1 PREEMPT [    1.933559] Tainted: [E]=UNSIGNED_MODULE [    1.933561] Hardware name: IBM,9080-HEX Power11 (architected) 0x820200 0xf000007 of:IBM,FW1110.01 (NH1110_069) hv:phyp pSeries [    1.933565] NIP:  c00000000026f59c LR: c00000000026f598 CTR: 00000000005d54a0 [    1.933568] REGS: c0000000097ff600 TRAP: 0700   Tainted: G       E        (7.1.0-rc5-next-20260529) [    1.933572] MSR:  8000000002029033   CR: 28222282  XER: 00000004 [    1.933581] CFAR: c000000000234154 IRQMASK: 0 [    1.933581] GPR00: c00000000026f598 c0000000097ff8c0 c00000000205b200 0000000000000053 [    1.933581] GPR04: 3fffffffffff7fff c0000000097ff6b0 c0000000097ff6a8 00000013f6440000 [    1.933581] GPR08: 0000000000000027 0000000000000000 c0000000c90b2a00 c0000000037ae1d0 [    1.933581] GPR12: c000000003b2e160 c0000013fffa2300 0000000000000000 0000000000000000 [    1.933581] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [    1.933581] GPR20: 0000000000000000 0000000000000000 0000000000000000 c000000003fb5d18 [    1.933581] GPR24: c000000003fb55b0 c000000008acc2b8 c008000005390180 c0000000097ff9c8 [    1.933581] GPR28: 0000000000000000 c000000008acc200 0000000000000000 0000000000000058 [    1.933619] NIP [c00000000026f59c] __alloc_workqueue+0x62c/0x690 [    1.933623] LR [c00000000026f598] __alloc_workqueue+0x628/0x690 [    1.933627] Call Trace: [    1.933629] [c0000000097ff8c0] [c00000000026f598] __alloc_workqueue+0x628/0x690 (unreliable) [    1.933635] [c0000000097ff970] [c00000000026f634] alloc_workqueue_noprof+0x34/0x50 [    1.933640] [c0000000097ff990] [c008000005316428] nvme_tcp_init_module+0x54/0xf4 [nvme_tcp] [    1.933645] [c0000000097ffa10] [c000000000010f7c] do_one_initcall+0x5c/0x45c [    1.933650] [c0000000097ffb00] [c000000000358b10] do_init_module+0x70/0x380 [    1.933655] [c0000000097ffb80] [c00000000035ac10] init_module_from_file+0x110/0x130 [    1.933659] [c0000000097ffc60] [c00000000035ad84] idempotent_init_module+0x154/0x3c0 [    1.933663] [c0000000097ffd20] [c00000000035b080] sys_finit_module+0x90/0x150 [    1.933667] [c0000000097ffda0] [c000000000034318] system_call_exception+0x148/0x4b0 [    1.933672] [c0000000097ffe30] [c00000000000d05c] system_call_vectored_common+0x15c/0x2ec [    1.933678] ---- interrupt: 3000 at 0x7fff98bab0bc [    1.933682] NIP:  00007fff98bab0bc LR: 00007fff98bab0bc CTR: 0000000000000000 [    1.933685] REGS: c0000000097ffe60 TRAP: 3000   Tainted: G       E        (7.1.0-rc5-next-20260529) [    1.933688] MSR:  800000000000f033   CR: 40222404  XER: 00000000 [    1.933697] IRQMASK: 0 [    1.933697] GPR00: 0000000000000161 00007fffda9c33d0 00007fff98c97c00 0000000000000005 [    1.933697] GPR04: 00000001034dbf48 0000000000000000 0000000000000000 0000000000000000 [    1.933697] GPR08: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [    1.933697] GPR12: 0000000000000000 00007fff994bcac0 000000013fcd0720 000000013fcd1c28 [    1.933697] GPR16: 000000013fce06a0 0000000000000208 0000000000000020 0000000000000000 [    1.933697] GPR20: 0000000000000000 0000000000000000 000000013fcd1bc0 0000000000000000 [    1.933697] GPR24: 000000013fcd3200 000000013fcd21d0 00000001034dcf18 000000013fcd1d50 [    1.933697] GPR28: 00000001034dbf48 0000000000060000 000000013fcd1bc0 000000013fcd2290 [    1.933733] NIP [00007fff98bab0bc] 0x7fff98bab0bc [    1.933736] LR [00007fff98bab0bc] 0x7fff98bab0bc [    1.933739] ---- interrupt: 3000 [    1.933741] Code: 4bffff34 3d22ff9c 3b496760 4bfffbfc 3c62ff89 39200001 3d4201d0 7f24cb78 38638d60 992ab08a 4bfc4ab5 60000000 <0fe00000> 4bffff60 3c62ff89 39200001 [    1.933753] ---[ end trace 0000000000000000 ]--- If you happen to fix, this please add below tag. Reported-by: Venkat Rao Bagalkote Regards, Venkat.