From nobody Fri Nov 29 16:44:06 2024 Received: from mx0b-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (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 7AD24187851; Tue, 17 Sep 2024 19:13:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.163.158.5 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726600394; cv=none; b=LzIlzQCxs3V572F3g49ZFY49gIRBtw2BDhTvXl30arfqYMtFGoaN7474LYEAVzVY5Tp+Tdzo+u/lP0IixGDlHJxLT44Ts67vNOue0DBtzHvqYTB0uMnrivM089T2PQm8kCWIizmDSCNn4+zSkAfXy6uIJ/AECk6/AVZuc3ogNhI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726600394; c=relaxed/simple; bh=gK0z35wo4sEinJ2IRbgB2seiC4GbJWilR01Jv0BXbAE=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=BswNkayH6Aiy9NuZ94Vxm5fOnuBusuX+hP1QkdlQ8lgeJcx36FCrZObrqcJ6o7w3f1b2myeol8PtuCjyZtR0aIpDPzp4T3UGZFmJ89vK4qyeGU75Bw0KT6VbELajOq7NdwVdk58mAE/ThCy7vmOOEj1Qxy/F2X9qNhy1mwM9O7o= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com; spf=pass smtp.mailfrom=linux.ibm.com; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b=OA4qe+aG; arc=none smtp.client-ip=148.163.158.5 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="OA4qe+aG" Received: from pps.filterd (m0353725.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 48HHq550030256; Tue, 17 Sep 2024 19:12:58 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from :to:cc:subject:date:message-id:mime-version :content-transfer-encoding; s=pp1; bh=tTTPe2EwMxGkXu3+quNIYQ4sUe qo69/BDRNt3fBrhKw=; b=OA4qe+aGN3rq6Aj6j0hwlUV6ckM82I9Kj4vK7xE435 Z4m6TYeql/Myw+hxUSpgdTWX27GlxBpy6yi3u57jS0dB9l5ZmAFjg34+OzyRbPmr 5waBWe7uieQ3tFh+iT68O600F9xJnRYMlwykWBVT4dsUiVO/hbrvjPLeUWBcZ93l 7hfuMb1cZZJDxx3KPrFU22I55e2AL6s99dHaisZvXvUVgflvG5cMZFqCwzJY5imI EEphnR0zFdeVYmJ//D9DZ0WJBdlNaisa3HC3JEB4sver/tDoqYQYZ762QATjkTUn tavE5PU6Z2Evl9ruA41soqecVyc9fKbWXS1Ys+bTlQmQ== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 41pht8gydw-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 17 Sep 2024 19:12:58 +0000 (GMT) Received: from m0353725.ppops.net (m0353725.ppops.net [127.0.0.1]) by pps.reinject (8.18.0.8/8.18.0.8) with ESMTP id 48HJCv4L032258; Tue, 17 Sep 2024 19:12:57 GMT Received: from ppma22.wdc07v.mail.ibm.com (5c.69.3da9.ip4.static.sl-reverse.com [169.61.105.92]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 41pht8gydr-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 17 Sep 2024 19:12:57 +0000 (GMT) Received: from pps.filterd (ppma22.wdc07v.mail.ibm.com [127.0.0.1]) by ppma22.wdc07v.mail.ibm.com (8.18.1.2/8.18.1.2) with ESMTP id 48HIgii7000642; Tue, 17 Sep 2024 19:12:57 GMT Received: from smtprelay02.wdc07v.mail.ibm.com ([172.16.1.69]) by ppma22.wdc07v.mail.ibm.com (PPS) with ESMTPS id 41nn7176tt-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 17 Sep 2024 19:12:57 +0000 Received: from smtpav06.wdc07v.mail.ibm.com (smtpav06.wdc07v.mail.ibm.com [10.39.53.233]) by smtprelay02.wdc07v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 48HJCuZt28312284 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 17 Sep 2024 19:12:56 GMT Received: from smtpav06.wdc07v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 9D66F58054; Tue, 17 Sep 2024 19:12:56 +0000 (GMT) Received: from smtpav06.wdc07v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 061185803F; Tue, 17 Sep 2024 19:12:56 +0000 (GMT) Received: from slate16.aus.stglabs.ibm.com (unknown [9.61.93.228]) by smtpav06.wdc07v.mail.ibm.com (Postfix) with ESMTP; Tue, 17 Sep 2024 19:12:55 +0000 (GMT) From: Eddie James To: sam@mendozajonas.com Cc: davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, gwshan@linux.vnet.ibm.com, joel@jms.id.au, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, eajames@linux.ibm.com Subject: [PATCH] net/ncsi: Cancel the ncsi work before freeing the associated structure Date: Tue, 17 Sep 2024 14:12:55 -0500 Message-ID: <20240917191255.1436553-1-eajames@linux.ibm.com> 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 X-TM-AS-GCONF: 00 X-Proofpoint-GUID: rRR6VCjfQVnDeWQofMo0WN-evbbJJWpl X-Proofpoint-ORIG-GUID: M-jZJrKOnE4X_Gt79SxMxjZB64N-TqW0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1051,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-17_09,2024-09-16_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 phishscore=0 bulkscore=0 suspectscore=0 priorityscore=1501 adultscore=0 mlxlogscore=772 mlxscore=0 clxscore=1011 malwarescore=0 spamscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2408220000 definitions=main-2409170134 Content-Type: text/plain; charset="utf-8" The work function can run after the ncsi device is freed, resulting in use-after-free bugs or kernel panic. Fixes: 2d283bdd079c ("net/ncsi: Resource management") Signed-off-by: Eddie James --- net/ncsi/ncsi-manage.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/ncsi/ncsi-manage.c b/net/ncsi/ncsi-manage.c index 5ecf611c8820..3eda24eac668 100644 --- a/net/ncsi/ncsi-manage.c +++ b/net/ncsi/ncsi-manage.c @@ -1954,6 +1954,8 @@ void ncsi_unregister_dev(struct ncsi_dev *nd) list_del_rcu(&ndp->node); spin_unlock_irqrestore(&ncsi_dev_lock, flags); =20 + cancel_work_sync(&ndp->work); + kfree(ndp); } EXPORT_SYMBOL_GPL(ncsi_unregister_dev); --=20 2.43.0