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 0752DE7F128 for ; Tue, 26 Sep 2023 20:50:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Mime-Version:References:In-Reply-To: Message-Id:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=h5kfW98V73Y2hSVp9twyda2TigDrasDvrNQaQIj+xe8=; b=TQCC3UsCuOucUT 6yY3eFQWxMBmEObyyhuMjRm4nEtdBW8KZET4oK6J52PGNhS/vKQtWB5lLneHHqYZaHa1JyjSeVflK OkTNrr4z/Arvba1ocpQWIdCPmb7nDdQ5EdGFdqtcrtJNC/ThHPA6JKuS2FzOVecLgJPmQGhddml85 UUOnRIU3P8ANp1k1Csv+TAKYaEwa+QFhCo7ZBfLKZV3pNKBoz2UFWtDproH2m1lwQPCf3znLILOcI 0h2hPXxqQcoMqRxUyrdZ0MmttR5HnL+2QNvEqu+l1GGyTbBvrUCkPC/PB32vG4uPoRq/iioHdJP0I jjco5zKQKqav3GDZxKNA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qlF0R-00H1LD-2E; Tue, 26 Sep 2023 20:50:07 +0000 Received: from ams.source.kernel.org ([145.40.68.75]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qlF0P-00H1Kl-0S for kexec@lists.infradead.org; Tue, 26 Sep 2023 20:50:06 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by ams.source.kernel.org (Postfix) with ESMTP id 9C201B8122A; Tue, 26 Sep 2023 20:50:03 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B68ABC433C8; Tue, 26 Sep 2023 20:50:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1695761403; bh=3JVXHD4B9lMQRBYG5Ho/Z5uxFJWNJxBVMuf0sevF2J4=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=RWRsX3qiHSw6hR4nQ9wbTQVNU0jSRV+75d5aaO/jzTRu8c5lur3hZ2UzAZDoFIiNZ zpuFiT9MT9ftLv2uzzpMc+mc1DTI8o2AKeS5qBOS544wlV9tjy1af8BQzBAlzCTu8z /6fqkgwwz4jw0WHOV3Un5z31k/rNg/YUT4s/IYRA= Date: Tue, 26 Sep 2023 13:50:01 -0700 From: Andrew Morton To: Baoquan He Cc: linux-kernel@vger.kernel.org, kexec@lists.infradead.org, eric.devolder@oracle.com, vschneid@redhat.com, sourabhjain@linux.ibm.com Subject: Re: [PATCH v3] Crash: add lock to serialize crash hotplug handling Message-Id: <20230926135001.4eb6ca73b1a4aa6224355ad1@linux-foundation.org> In-Reply-To: <20230926120905.392903-1-bhe@redhat.com> References: <20230926120905.392903-1-bhe@redhat.com> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230926_135005_345291_8A4E262A X-CRM114-Status: UNSURE ( 8.26 ) X-CRM114-Notice: Please train this message. X-BeenThere: kexec@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "kexec" Errors-To: kexec-bounces+kexec=archiver.kernel.org@lists.infradead.org On Tue, 26 Sep 2023 20:09:05 +0800 Baoquan He wrote: > Eric reported that handling corresponding crash hotplug event can be > failed easily when many memory hotplug event are notified in a short > period. They failed because failing to take __kexec_lock. I'm assuming that this failure is sufficiently likely so as to justify a -stable backport of the fix. Please let me know if this is incorrect. _______________________________________________ kexec mailing list kexec@lists.infradead.org http://lists.infradead.org/mailman/listinfo/kexec