From nobody Mon Mar 23 21:27:42 2026 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (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 8FFC23BBA18 for ; Mon, 23 Mar 2026 15:06:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774278377; cv=none; b=gug3Ek7yu74FgDamduNX8zF5HtnA0L+rl8MEeXnd0tJAgtZlrjMU80Z+MvE4wbF0f+FH/PqvLYCarranaada8XU5lLPWTJkTCJn6Ky/xh1LX3IlG7HMPnOD4fYziqAs9dGGYnCQBt+lXcRT18MqcfygAav11PKJBzeHFWy3JK50= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774278377; c=relaxed/simple; bh=+qHAnkIsqP997RWJ6s4umVeu9sIbTOhEQRZ3NRgBWrs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=eThqeX7bRSRi975qKfBsuTATX16NMdKiZB2Jz9jmxAbgcGNFFzyv3PpmlSTHk9Sg/CJUx7u02A8JyVqGzhgnFHKEpLB7Pv5IjZVwb7G0Tu/nGR5tSO2EMDWCOdYGCB30yo14Q7n4/s8Q7e2rpsraF6J3glZ4GWYQ4kjEFRa8uO0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=UBOSSvYV; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="UBOSSvYV" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1774278375; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=VeYaAx0dAJ4NEayyI0atPURUWeMa5ddyG3Tx/cyMm4w=; b=UBOSSvYVXx6SqSUldm+vInwt34ZmQFDP7sxahg6Tw6OYV3m55mwyFQNOtKTMWxj69xUi+F d09H9aJ2yD1xgAFF/sWurinoFffGSWhUuW41Slouh9f9qhP5tCa+cN1L1iXocp3drQM8VW LRmC2jeX32HIPKvgjd+8obFKZqsmdoE= Received: from mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-577-Nj5H2jTqPACnoLggokpyxA-1; Mon, 23 Mar 2026 11:06:12 -0400 X-MC-Unique: Nj5H2jTqPACnoLggokpyxA-1 X-Mimecast-MFC-AGG-ID: Nj5H2jTqPACnoLggokpyxA_1774278370 Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 25AEC1800359; Mon, 23 Mar 2026 15:06:10 +0000 (UTC) Received: from warthog.procyon.org.com (unknown [10.44.33.121]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id E7AD3300019F; Mon, 23 Mar 2026 15:06:05 +0000 (UTC) From: David Howells To: netdev@vger.kernel.org Cc: David Howells , Marc Dionne , Jakub Kicinski , "David S. Miller" , Eric Dumazet , Paolo Abeni , linux-afs@lists.infradead.org, linux-kernel@vger.kernel.org, Anderson Nascimento , Jeffrey Altman , Simon Horman , stable@kernel.org Subject: [PATCH net v2 10/10] rxrpc: Fix key reference count leak from call->key Date: Mon, 23 Mar 2026 15:05:01 +0000 Message-ID: <20260323150505.3513839-11-dhowells@redhat.com> In-Reply-To: <20260323150505.3513839-1-dhowells@redhat.com> References: <20260323150505.3513839-1-dhowells@redhat.com> 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-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 Content-Type: text/plain; charset="utf-8" From: Anderson Nascimento When creating a client call in rxrpc_alloc_client_call(), the code obtains a reference to the key. This is never cleaned up and gets leaked when the call is destroyed. Fix this by freeing call->key in rxrpc_destroy_call(). Before the patch, it shows the key reference counter elevated: $ cat /proc/keys | grep afs@54321 1bffe9cd I--Q--i 8053480 4169w 3b010000 1000 1000 rxrpc afs@54321: ka $ After the patch, the invalidated key is removed when the code exits: $ cat /proc/keys | grep afs@54321 $ Fixes: f3441d4125fc ("rxrpc: Copy client call parameters into rxrpc_call ea= rlier") Signed-off-by: Anderson Nascimento Co-developed-by: David Howells Signed-off-by: David Howells Reviewed-by: Jeffrey Altman cc: Marc Dionne cc: Eric Dumazet cc: "David S. Miller" cc: Jakub Kicinski cc: Paolo Abeni cc: Simon Horman cc: linux-afs@lists.infradead.org cc: netdev@vger.kernel.org cc: stable@kernel.org --- net/rxrpc/call_object.c | 1 + 1 file changed, 1 insertion(+) diff --git a/net/rxrpc/call_object.c b/net/rxrpc/call_object.c index 0e47751d5937..57c15aa1e9b5 100644 --- a/net/rxrpc/call_object.c +++ b/net/rxrpc/call_object.c @@ -694,6 +694,7 @@ static void rxrpc_destroy_call(struct work_struct *work) rxrpc_put_bundle(call->bundle, rxrpc_bundle_put_call); rxrpc_put_peer(call->peer, rxrpc_peer_put_call); rxrpc_put_local(call->local, rxrpc_local_put_call); + key_put(call->key); call_rcu(&call->rcu, rxrpc_rcu_free_call); }