From patchwork Thu Aug 24 15:53:40 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hanna Czenczek X-Patchwork-Id: 13364394 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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 5532AC3DA6F for ; Thu, 24 Aug 2023 15:54:05 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qZCeh-0000et-Cx; Thu, 24 Aug 2023 11:53:55 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qZCef-0000eL-Ld for qemu-devel@nongnu.org; Thu, 24 Aug 2023 11:53:53 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qZCed-0007hv-Eu for qemu-devel@nongnu.org; Thu, 24 Aug 2023 11:53:53 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1692892430; 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=jwVV5TePIHkoFIpzaWOERMFTI2IIumj97EfBAgYurRU=; b=c60C8w1Lm41E8SqPNNg0Fzjn1P4fWtICx4ABGHj82+mAuc1U+jTbNC6pvcg9XBRAoBELiS mzF87Gv9W84zxqGwP9wKcvuGSaLCTHnZzFrXwVfCyO9kURH1h8hlNvNBwFhSOgiilhedkL rhMJBIQVgtXfPESoNHxpulXOkwg3Pa4= Received: from mimecast-mx02.redhat.com (66.187.233.73 [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-237-yyJSG7tLMdGknbkLZ6miRg-1; Thu, 24 Aug 2023 11:53:48 -0400 X-MC-Unique: yyJSG7tLMdGknbkLZ6miRg-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 4FE8829AB3E1; Thu, 24 Aug 2023 15:53:48 +0000 (UTC) Received: from localhost (unknown [10.39.193.160]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 01060112131B; Thu, 24 Aug 2023 15:53:47 +0000 (UTC) From: Hanna Czenczek To: qemu-block@nongnu.org Cc: qemu-devel@nongnu.org, Hanna Czenczek , Kevin Wolf , Stefan Hajnoczi , Sam Li Subject: [PATCH 1/5] file-posix: Clear bs->bl.zoned on error Date: Thu, 24 Aug 2023 17:53:40 +0200 Message-ID: <20230824155345.109765-2-hreitz@redhat.com> In-Reply-To: <20230824155345.109765-1-hreitz@redhat.com> References: <20230824155345.109765-1-hreitz@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.3 Received-SPF: pass client-ip=170.10.129.124; envelope-from=hreitz@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org bs->bl.zoned is what indicates whether the zone information is present and valid; it is the only thing that raw_refresh_zoned_limits() sets if CONFIG_BLKZONED is not defined, and it is also the only thing that it sets if CONFIG_BLKZONED is defined, but there are no zones. Make sure that it is always set to BLK_Z_NONE if there is an error anywhere in raw_refresh_zoned_limits() so that we do not accidentally announce zones while our information is incomplete or invalid. This also fixes a memory leak in the last error path in raw_refresh_zoned_limits(). Signed-off-by: Hanna Czenczek Reviewed-by: Sam Li --- block/file-posix.c | 21 ++++++++++++--------- 1 file changed, 12 insertions(+), 9 deletions(-) diff --git a/block/file-posix.c b/block/file-posix.c index b16e9c21a1..2b88b9eefa 100644 --- a/block/file-posix.c +++ b/block/file-posix.c @@ -1412,11 +1412,9 @@ static void raw_refresh_zoned_limits(BlockDriverState *bs, struct stat *st, BlockZoneModel zoned; int ret; - bs->bl.zoned = BLK_Z_NONE; - ret = get_sysfs_zoned_model(st, &zoned); if (ret < 0 || zoned == BLK_Z_NONE) { - return; + goto no_zoned; } bs->bl.zoned = zoned; @@ -1437,10 +1435,10 @@ static void raw_refresh_zoned_limits(BlockDriverState *bs, struct stat *st, if (ret < 0) { error_setg_errno(errp, -ret, "Unable to read chunk_sectors " "sysfs attribute"); - return; + goto no_zoned; } else if (!ret) { error_setg(errp, "Read 0 from chunk_sectors sysfs attribute"); - return; + goto no_zoned; } bs->bl.zone_size = ret << BDRV_SECTOR_BITS; @@ -1448,10 +1446,10 @@ static void raw_refresh_zoned_limits(BlockDriverState *bs, struct stat *st, if (ret < 0) { error_setg_errno(errp, -ret, "Unable to read nr_zones " "sysfs attribute"); - return; + goto no_zoned; } else if (!ret) { error_setg(errp, "Read 0 from nr_zones sysfs attribute"); - return; + goto no_zoned; } bs->bl.nr_zones = ret; @@ -1472,10 +1470,15 @@ static void raw_refresh_zoned_limits(BlockDriverState *bs, struct stat *st, ret = get_zones_wp(bs, s->fd, 0, bs->bl.nr_zones, 0); if (ret < 0) { error_setg_errno(errp, -ret, "report wps failed"); - bs->wps = NULL; - return; + goto no_zoned; } qemu_co_mutex_init(&bs->wps->colock); + return; + +no_zoned: + bs->bl.zoned = BLK_Z_NONE; + g_free(bs->wps); + bs->wps = NULL; } #else /* !defined(CONFIG_BLKZONED) */ static void raw_refresh_zoned_limits(BlockDriverState *bs, struct stat *st,