From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (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 1F2F01547CC for ; Tue, 5 Aug 2025 19:44:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754423068; cv=none; b=BLK65fU2dvLJxCHTHwPCDOVQchzFLvmOQsh8hxUPKek/FTDh5QCrPMP6G2Mu8uqUMvzdSaxikdWFhVvnronsN96RwVI7eYohVaelAhZmm3kHxR98fU2CthcaJa5J6tKzcVTwwQ0U6p+wSKlEox28RkvlHNYgHuuvkivF2dTHsUc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754423068; c=relaxed/simple; bh=SfBzt2N3LNeDAm5Tym0MNtM5fNHtmIUlijMC48PoPDo=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=THSEqr3UyE1EjkadhK6TzhkHTdPtzPn7lmKIIBCL2muQ6nxLBs0+lnzqpKkFRkqPYJBpOy/sTqEHMoqCFJOjz1rDq9DqyZsZuvf2lE6HuZrVHSGarODjE1kj0a1nbzkFeWAoT9Ci+a+NYkPwtW2g+ITPY5VXDZYwS3dUIatj/Wg= 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=Vvblv/Nk; arc=none smtp.client-ip=170.10.133.124 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="Vvblv/Nk" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1754423064; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=SfBzt2N3LNeDAm5Tym0MNtM5fNHtmIUlijMC48PoPDo=; b=Vvblv/NkvReR5g4zV8PEELZtvOlL02nukBLoP/Ikv0WknjAsXfrnnZGZk5eRWTX1e2M4Et MbgahLL0/tRb2twNbs8pFsxhzG1QS4iBnVMdkg/UDsUggMviPeCgGqchAvcqqM8scySCH2 4RfQbp/0jDF52TctS8b42kixtTtO+zM= 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-382-3IhIyEopPyiYOwFN8HuviA-1; Tue, 05 Aug 2025 15:44:20 -0400 X-MC-Unique: 3IhIyEopPyiYOwFN8HuviA-1 X-Mimecast-MFC-AGG-ID: 3IhIyEopPyiYOwFN8HuviA_1754423058 Received: from mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.12]) (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 47F481800370; Tue, 5 Aug 2025 19:44:18 +0000 (UTC) Received: from dhcp-27-174.brq.redhat.com (unknown [10.44.34.134]) by mx-prod-int-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with SMTP id B8E1D1955E88; Tue, 5 Aug 2025 19:44:14 +0000 (UTC) Received: by dhcp-27-174.brq.redhat.com (nbSMTP-1.00) for uid 1000 oleg@redhat.com; Tue, 5 Aug 2025 21:43:07 +0200 (CEST) Date: Tue, 5 Aug 2025 21:43:02 +0200 From: Oleg Nesterov To: =?utf-8?B?6auY57+U?= Cc: Christian Brauner , Al Viro , Xiang Gao , "mjguzik@gmail.com" , "Liam.Howlett@oracle.com" , "joel.granados@kernel.org" , "lorenzo.stoakes@oracle.com" , "linux-kernel@vger.kernel.org" Subject: Re: =?utf-8?B?562U5aSNOiBbRXh0ZXJuYQ==?= =?utf-8?Q?l?= Mail]Re: [PATCH] pid: Add a judgment for ns null in pid_nr_ns Message-ID: <20250805194302.GC27131@redhat.com> References: <20250802022123.3536934-1-gxxa03070307@gmail.com> <20250802022550.GT222315@ZenIV> <15b18541f37447dd8d5dbd8012662f67@xiaomi.com> <20250802084525.GB31711@redhat.com> <80be47cb31d14ffc9f9a7d8d4408ab0a@xiaomi.com> <20250804114900.GA6656@redhat.com> <20250804-gepfercht-delfin-0172b1ee9556@brauner> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: User-Agent: Mutt/1.5.24 (2015-08-30) X-Scanned-By: MIMEDefang 3.0 on 10.30.177.12 On 08/05, 高翔 wrote: > > I also think "WARN ON ONCE" is quite sensible . I am starting to agree, but lets wait for Christian. Oleg.