From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B73B0CD6E4C for ; Mon, 1 Jun 2026 06:47:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=hEfKct+yq7x8QADBhtX8ax8M340MSsFVRrf3ik9DM/M=; b=vR1cldNOp3P3D9Gh/Q93BomwHA RhkGQhdTlcfu4hQel3WVAfQ4iqUJ3LP/Qyl5LJUNJvUNCXc8Zfl0z4BIBBLh/aUOC8ZZPWbAt6mia 2Zpdo2kMWubqchCynjrnkP6DVrfDNC+6NP4m01kHXPYu4wb/LmzZCsRu52d6dj+mSb36h+H5HJEiN LBBzN1PBwGyeh1kKNrv/wZevbBUk4mP2zitxM07/K77rgwl0GSmf90E7tGP7e2z8e3Iv1WwyL/L4F NOeMX6p8eBGZesnJ8aNG5JAjZKi2l39wM/sNs6PO8bbjFhvZcWp/DyupVQLQqPoqFY9YKZGPyP65m lWYJvQww==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wTwQa-0000000AEEI-2gFP; Mon, 01 Jun 2026 06:47:12 +0000 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wTwQX-0000000AEDx-13RS for linux-nvme@lists.infradead.org; Mon, 01 Jun 2026 06:47:10 +0000 Received: from pps.filterd (m0356516.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 65137w3O3293619; Mon, 1 Jun 2026 06:46:57 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=pp1; bh=hEfKct +yq7x8QADBhtX8ax8M340MSsFVRrf3ik9DM/M=; b=GuSyOYffQ3X3VnwaDCO90G sxAZ47rnSOZ6Y7vMu21qhbzKkMVB3L06BXhPhgSolhL1cHzdfuJ/2mhcMR9gRbbs E2fpi37mM302YIxgpb/aqf3O8VJHJBcr2fh3CJfjDSQnCw6eVyviu60CQmtGu8s2 fsPz0prezfsEgC0uI/d4o6ovxrSb8vkCXez/yMU3j6lArkGd7WD6gEUfi0wxJq0U jgjBe8iK+48nkn4hCvu7R59FybXu3I0FmCqWaOdDg6T5Oe63y/gM/Q5wqpBpv9ZH v8fHVFbsZsVw4NS7+RLGw9X8na1D0tIVNMYPJodDYVcih1YKla0uC71TbSph7VvQ == Received: from ppma21.wdc07v.mail.ibm.com (5b.69.3da9.ip4.static.sl-reverse.com [169.61.105.91]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 4efnahf8gk-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 01 Jun 2026 06:46:56 +0000 (GMT) Received: from pps.filterd (ppma21.wdc07v.mail.ibm.com [127.0.0.1]) by ppma21.wdc07v.mail.ibm.com (8.18.1.7/8.18.1.7) with ESMTP id 6516dPcH005184; Mon, 1 Jun 2026 06:46:56 GMT Received: from smtprelay04.wdc07v.mail.ibm.com ([172.16.1.71]) by ppma21.wdc07v.mail.ibm.com (PPS) with ESMTPS id 4egb7jvt1r-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 01 Jun 2026 06:46:56 +0000 (GMT) Received: from smtpav06.dal12v.mail.ibm.com (smtpav06.dal12v.mail.ibm.com [10.241.53.105]) by smtprelay04.wdc07v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 6516ktRw41550554 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 1 Jun 2026 06:46:55 GMT Received: from smtpav06.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6633458043; Mon, 1 Jun 2026 06:46:55 +0000 (GMT) Received: from smtpav06.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 3868058055; Mon, 1 Jun 2026 06:46:52 +0000 (GMT) Received: from [9.123.7.57] (unknown [9.123.7.57]) by smtpav06.dal12v.mail.ibm.com (Postfix) with ESMTP; Mon, 1 Jun 2026 06:46:51 +0000 (GMT) Message-ID: <0bd4b5ed-c292-490d-ba2a-df4e7590012a@linux.ibm.com> Date: Mon, 1 Jun 2026 12:16:49 +0530 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [linux-next20260529] WARNING: kernel/workqueue.c:5855 at __alloc_workqueue+0x62c/0x690 To: Venkat Rao Bagalkote , 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 References: Content-Language: en-US From: Nilay Shroff In-Reply-To: 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-Spam-Details-Enc: AW1haW4tMjYwNjAxMDA2NCBTYWx0ZWRfX07TDZSsbIHaE DNl5MdElL7LZjVmnNBn4eSni40qtqQmheKKgV/PImEmqtIvclKRlnbJFscGNLQG3k7nnzF03jDw h7IKQLIHRBCQY247DTbScYXiPXs+Z27w9pRwWns/nCkOtcrO79wBOGVb66qmTEl/9YndYskzRXQ ORQP1xmRHxomLGmj3fumGTSNy0GL4z6EERMdLKuO1pD8NGzkE/39pcjJgO9eQfNTaHueBEkr9AJ 0AjKdIGEphOW7d4QhN5PFmyvFr7E5SqXuLbKoiBUme0OlD157Rh3f3nJrZZIGmPDgokJldRp6S0 fYu+XiYYAPysu8GiJtHJNnx7QH6vJplYlMu8Kx8Lv55ZDI//eB9fRTgIGQYM5LybzC7C1POE2wf Pr82BEbfTJbSJxYj8U7VYokTgWn/qDz9eD+MNZFT5T+tuixYuuIKCkEQpkP8Vg4mzqIst+7cQx+ ATd7zCuc92P4vsnSleg== X-Proofpoint-ORIG-GUID: 0gbqG-G1f3uEu1hwLQsBjJu8VTDbpLhu X-Authority-Analysis: v=2.4 cv=cOzQdFeN c=1 sm=1 tr=0 ts=6a1d2ae1 cx=c_pps a=GFwsV6G8L6GxiO2Y/PsHdQ==:117 a=GFwsV6G8L6GxiO2Y/PsHdQ==:17 a=IkcTkHD0fZMA:10 a=FelO9ux0wxsA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=Y2IxJ9c9Rs8Kov3niI8_:22 a=VwQbUJbxAAAA:8 a=1XWaLZrsAAAA:8 a=sqeWFfpG6kVFigcpmYgA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 X-Proofpoint-GUID: mjXFN--hxfJkAaetAiIR67fJA77mBedn 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_02,2026-05-28_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1011 impostorscore=0 lowpriorityscore=0 spamscore=0 bulkscore=0 malwarescore=0 phishscore=0 suspectscore=0 priorityscore=1501 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605210000 definitions=main-2606010064 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260531_234709_406821_8A68FC92 X-CRM114-Status: GOOD ( 11.86 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org On 6/1/26 11:40 AM, Venkat Rao Bagalkote wrote: > 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 This is already reported here: https://lore.kernel.org/all/6a1a9a86.323e8352.141b09.0001.GAE@google.com/ And the fix is posted here: https://lore.kernel.org/all/20260530081059.428303-1-kuniyu@google.com/ Thanks, --Nilay