From patchwork Wed Aug 9 20:23:46 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bart Van Assche X-Patchwork-Id: 13348460 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3AF01C001B0 for ; Wed, 9 Aug 2023 20:24:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234436AbjHIUYb (ORCPT ); Wed, 9 Aug 2023 16:24:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58558 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234479AbjHIUYO (ORCPT ); Wed, 9 Aug 2023 16:24:14 -0400 Received: from mail-pj1-f49.google.com (mail-pj1-f49.google.com [209.85.216.49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8B58F2690; Wed, 9 Aug 2023 13:24:06 -0700 (PDT) Received: by mail-pj1-f49.google.com with SMTP id 98e67ed59e1d1-26830595676so126047a91.2; Wed, 09 Aug 2023 13:24:06 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691612646; x=1692217446; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=o5dO3J2D44JWA/zBVJrnrUbBeTSoS+a+K9Gvbk3ZU3w=; b=O0MduQoDyTZZ7O9hysuBdRSuTIFEOo3uWt38eQpYFEYMGaXQHmq0aDjIWw9rzcb2+p WwPGNgujY03IvRmtDniUZpX0lU1itBel6188melW70F4dCnXSuvtnJpaD4/pqXImJ2S4 QvpTHjJ/9MeE02VASzLvYqDHy2dcXamafp8s2Gavd393CwwK+8SC7i6SIEqLQwcpAP8Y 7QRyH8hIe6A1aHoWMKabsClZ6uj5Saps7a8EJKJggNyVY5RD0uZ/e3zEsMu5DUqutIny IkhNInF3ZVI9voBqdOKL0NrWVnPCjZuSf3DRTUy8l9a4HN+gYWcmkENqfIbr4FDj9HHg 293Q== X-Gm-Message-State: AOJu0Yw3WR1eSyXeJQGt42bsuMKAeJbEPMLdtPE0hiDFTBOxOKyL3Qzs ibZtYh08NAIcS4BOKZoTYdw= X-Google-Smtp-Source: AGHT+IEganERE5UnLbYrCgpdsQUD6t+54AGWUd+9pL3pi4Wi3r33UIZuUPbyh3vz4sSEt3NKsp+HNg== X-Received: by 2002:a17:90b:1d12:b0:268:5c2f:f0c7 with SMTP id on18-20020a17090b1d1200b002685c2ff0c7mr371579pjb.5.1691612645970; Wed, 09 Aug 2023 13:24:05 -0700 (PDT) Received: from bvanassche-glaptop2.roam.corp.google.com ([98.51.102.78]) by smtp.gmail.com with ESMTPSA id gq9-20020a17090b104900b002694da8a9cdsm1868103pjb.48.2023.08.09.13.24.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Aug 2023 13:24:05 -0700 (PDT) From: Bart Van Assche To: Jens Axboe Cc: linux-block@vger.kernel.org, linux-scsi@vger.kernel.org, Jaegeuk Kim , Christoph Hellwig , Bart Van Assche , "Martin K . Petersen" , Douglas Gilbert , "James E.J. Bottomley" Subject: [PATCH v7 5/7] scsi: scsi_debug: Support injecting unaligned write errors Date: Wed, 9 Aug 2023 13:23:46 -0700 Message-ID: <20230809202355.1171455-6-bvanassche@acm.org> X-Mailer: git-send-email 2.41.0.640.ga95def55d0-goog In-Reply-To: <20230809202355.1171455-1-bvanassche@acm.org> References: <20230809202355.1171455-1-bvanassche@acm.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Allow user space software, e.g. a blktests test, to inject unaligned write errors. Cc: Martin K. Petersen Cc: Douglas Gilbert Signed-off-by: Bart Van Assche --- drivers/scsi/scsi_debug.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c index 22485726c534..b9712275de9d 100644 --- a/drivers/scsi/scsi_debug.c +++ b/drivers/scsi/scsi_debug.c @@ -181,6 +181,7 @@ static const char *sdebug_version_date = "20210520"; #define SDEBUG_OPT_NO_CDB_NOISE 0x4000 #define SDEBUG_OPT_HOST_BUSY 0x8000 #define SDEBUG_OPT_CMD_ABORT 0x10000 +#define SDEBUG_OPT_UNALIGNED_WRITE 0x20000 #define SDEBUG_OPT_ALL_NOISE (SDEBUG_OPT_NOISE | SDEBUG_OPT_Q_NOISE | \ SDEBUG_OPT_RESET_NOISE) #define SDEBUG_OPT_ALL_INJECTING (SDEBUG_OPT_RECOVERED_ERR | \ @@ -188,7 +189,8 @@ static const char *sdebug_version_date = "20210520"; SDEBUG_OPT_DIF_ERR | SDEBUG_OPT_DIX_ERR | \ SDEBUG_OPT_SHORT_TRANSFER | \ SDEBUG_OPT_HOST_BUSY | \ - SDEBUG_OPT_CMD_ABORT) + SDEBUG_OPT_CMD_ABORT | \ + SDEBUG_OPT_UNALIGNED_WRITE) #define SDEBUG_OPT_RECOV_DIF_DIX (SDEBUG_OPT_RECOVERED_ERR | \ SDEBUG_OPT_DIF_ERR | SDEBUG_OPT_DIX_ERR) @@ -3587,6 +3589,14 @@ static int resp_write_dt0(struct scsi_cmnd *scp, struct sdebug_dev_info *devip) struct sdeb_store_info *sip = devip2sip(devip, true); u8 *cmd = scp->cmnd; + if (unlikely(sdebug_opts & SDEBUG_OPT_UNALIGNED_WRITE && + atomic_read(&sdeb_inject_pending))) { + atomic_set(&sdeb_inject_pending, 0); + mk_sense_buffer(scp, ILLEGAL_REQUEST, LBA_OUT_OF_RANGE, + UNALIGNED_WRITE_ASCQ); + return check_condition_result; + } + switch (cmd[0]) { case WRITE_16: ei_lba = 0;