From nobody Mon May 25 05:56:12 2026 Received: from mailgw.kylinos.cn (mailgw.kylinos.cn [124.126.103.232]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 09F7E37F8AD; Mon, 18 May 2026 03:15:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=124.126.103.232 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779074160; cv=none; b=UQG3pTIbATCj2Elh26NmO5XVVb+YcwFz+fXcQ71c0wqZBLkjKaKJcMFWgVx4TC9vzkEHBchzHiJwFmP2+uX3utVD3Vvb9HtvLqk0kz2rPObN4sMcj28EclQdaEZsWdV7O2R+0qI1fG0fa6fd2Ehmux3+Vuw5hA+QJHhgtS2/4/o= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779074160; c=relaxed/simple; bh=QmgrWZh15YehuZ3Ti9S/QB9R23OWKZ9dV1E4OefO/38=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=Knqtk8EmKPXwskWmmZaOUU7jEYkp9elrwKFFLOWrkkNCnlSOr4R7jzjo9RFUuzu7Dm3xo6e8nTNskjzHDt4DwBnrrRnp8Q06Ssfn1HnA9dDGAwQjPmJXAb8X1rnz7KzYtXN3gDlrCAASDpduvq7iuyGhGo6Cgo/FwbBAiVyLfrs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn; spf=pass smtp.mailfrom=kylinos.cn; arc=none smtp.client-ip=124.126.103.232 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kylinos.cn X-UUID: e129cd5c526711f1aa26b74ffac11d73-20260518 X-CTIC-Tags: HR_CC_COUNT, HR_CC_DOMAIN_COUNT, HR_CC_NAME, HR_CC_NO_NAME, HR_CTE_8B HR_CTT_MISS, HR_DATE_H, HR_DATE_WKD, HR_DATE_ZONE, HR_FROM_NAME HR_SJ_LANG, HR_SJ_LEN, HR_SJ_LETTER, HR_SJ_NOR_SYM, HR_SJ_PHRASE HR_SJ_PHRASE_LEN, HR_SJ_WS, HR_TO_COUNT, HR_TO_DOMAIN_COUNT, HR_TO_NO_NAME IP_TRUSTED, SRC_TRUSTED, DN_TRUSTED, SA_TRUSTED, SA_EXISTED SN_TRUSTED, SN_EXISTED, SPF_NOPASS, DKIM_NOPASS, DMARC_NOPASS CIE_GOOD, CIE_GOOD_SPF, GTI_FG_BS, GTI_RG_INFO, GTI_C_BU AMN_GOOD, ABX_MISS_RDNS X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.3.12,REQID:10c80fd6-18c1-4767-877b-fa163ae5fe24,IP:10, URL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION :release,TS:10 X-CID-INFO: VERSION:1.3.12,REQID:10c80fd6-18c1-4767-877b-fa163ae5fe24,IP:10,UR L:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION:r elease,TS:10 X-CID-META: VersionHash:e7bac3a,CLOUDID:6aaa27c9bf92dbb74b5106f35906ab54,BulkI D:260518111554TK7EPN9U,BulkQuantity:0,Recheck:0,SF:17|19|38|66|78|102|127| 865|898,TC:nil,Content:0|15|50,EDM:-3,IP:-2,URL:0,File:nil,RT:nil,Bulk:nil ,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES:1,SPR:NO,DKR:0,DKP:0,BRR:0,BRE: 0,ARC:0 X-CID-BVR: 2,SSN|SDN X-CID-BAS: 2,SSN|SDN,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR,TF_CID_SPAM_FAS,TF_CID_SPAM_FSD X-CID-RHF: D41D8CD98F00B204E9800998ECF8427E X-UUID: e129cd5c526711f1aa26b74ffac11d73-20260518 X-User: cuitao@kylinos.cn Received: from ctao-book.. [(223.70.159.239)] by mailgw.kylinos.cn (envelope-from ) (Generic MTA with TLSv1.3 TLS_AES_256_GCM_SHA384 256/256) with ESMTP id 576830931; Mon, 18 May 2026 11:15:53 +0800 From: Tao Cui To: leon@kernel.org, jgg@ziepe.ca, linux-rdma@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Tao Cui Subject: [PATCH rdma-next] RDMA/cgroup: fix resource leak in DRIVER_FAILURE cleanup path Date: Mon, 18 May 2026 11:15:41 +0800 Message-ID: <20260518031541.1552942-1-cuitao@kylinos.cn> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" When a driver fails to destroy an RDMA object during ufile cleanup, the kernel retries and eventually falls back to the RDMA_REMOVE_DRIVER_FAILURE path. This path sets obj->object =3D NULL before calling uverbs_destroy_uobject(), which skips the destroy_hw callback. Since ib_rdmacg_uncharge() lives inside destroy_hw_idr_uobject(), the HCA_OBJECT cgroup charge is never released. Add an explicit ib_rdmacg_uncharge() call in the DRIVER_FAILURE path to prevent the resource counter leak. Signed-off-by: Tao Cui --- drivers/infiniband/core/rdma_core.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/core/rdma_core.c b/drivers/infiniband/core/= rdma_core.c index 5018ec837056..347ec8f6976b 100644 --- a/drivers/infiniband/core/rdma_core.c +++ b/drivers/infiniband/core/rdma_core.c @@ -917,8 +917,11 @@ static int __uverbs_cleanup_ufile(struct ib_uverbs_fil= e *ufile, * racing with a lookup_get. */ WARN_ON(uverbs_try_lock_object(obj, UVERBS_LOOKUP_WRITE)); - if (reason =3D=3D RDMA_REMOVE_DRIVER_FAILURE) + if (reason =3D=3D RDMA_REMOVE_DRIVER_FAILURE) { obj->object =3D NULL; + ib_rdmacg_uncharge(&obj->cg_obj, ib_dev, + RDMACG_RESOURCE_HCA_OBJECT); + } if (!uverbs_destroy_uobject(obj, reason, &attrs)) ret =3D 0; else --=20 2.43.0