From patchwork Fri Aug 11 21:35:41 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: 13351481 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 5ABA1C41513 for ; Fri, 11 Aug 2023 21:36:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236968AbjHKVg2 (ORCPT ); Fri, 11 Aug 2023 17:36:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43700 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236958AbjHKVgX (ORCPT ); Fri, 11 Aug 2023 17:36:23 -0400 Received: from mail-pl1-f176.google.com (mail-pl1-f176.google.com [209.85.214.176]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A29DC271B; Fri, 11 Aug 2023 14:36:23 -0700 (PDT) Received: by mail-pl1-f176.google.com with SMTP id d9443c01a7336-1bb84194bf3so16745755ad.3; Fri, 11 Aug 2023 14:36:23 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691789783; x=1692394583; 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=PniZFVm0KVVX2uS5WNDISfoYsmok7mUzRbqporfC4VQ=; b=MfKEE7oUjfrZZmAFYFwv/5WQFD9rbV1e13Oc6C+nyfY8Ia+/qw7GZKHaK+GUV4GMxO 3/5jjYch4kuRYicwJEBKIIc2icOvkx1XN4ZoxG/eCotuGBUPoIjrrWRDxmstIcU2Pizo x9DbnAvdo2gqgV+Wfd45d42hcIosvcRmourvUMCL3t/9600blJNm4qNy+YTdxWaSuUX0 Qa7Ww+ROblRPAGlt/jHFHJEVkedoD+CtLMBts2DNTwboykF8Pw60D+9WSfjWn6t7QBgX P24REJcMmR/EQ3GHjAdc0u4yK57WdFagtnk7UXC6YV36h4TcphSkVif2HLVNP7r3aP1E 9STw== X-Gm-Message-State: AOJu0Yx6RMYPBmEdEi6OWJ9Sivs9xI2J5vTEon+Fmic2Pqrsm/PKoDG3 S8QQY/EtxtW/vFzSYz3eTXI= X-Google-Smtp-Source: AGHT+IFD4hgcPG8C/LyricdK8OC2TRKTqSwUZLbW+EQX9HYgLUkVvaj4eixpYsDaHwJuJSm7yaOqsQ== X-Received: by 2002:a17:902:d4c6:b0:1b8:936f:c34d with SMTP id o6-20020a170902d4c600b001b8936fc34dmr3270015plg.27.1691789782986; Fri, 11 Aug 2023 14:36:22 -0700 (PDT) Received: from bvanassche-linux.mtv.corp.google.com ([2620:15c:211:201:cdd8:4c3:2f3c:adea]) by smtp.gmail.com with ESMTPSA id c10-20020a170903234a00b001b89c313185sm4394865plh.205.2023.08.11.14.36.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 11 Aug 2023 14:36:22 -0700 (PDT) From: Bart Van Assche To: Jens Axboe Cc: linux-block@vger.kernel.org, linux-scsi@vger.kernel.org, "Martin K . Petersen" , Christoph Hellwig , Bart Van Assche , Douglas Gilbert , Damien Le Moal , Ming Lei , "James E.J. Bottomley" Subject: [PATCH v8 7/9] scsi: scsi_debug: Support injecting unaligned write errors Date: Fri, 11 Aug 2023 14:35:41 -0700 Message-ID: <20230811213604.548235-8-bvanassche@acm.org> X-Mailer: git-send-email 2.41.0.640.ga95def55d0-goog In-Reply-To: <20230811213604.548235-1-bvanassche@acm.org> References: <20230811213604.548235-1-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. Acked-by: Douglas Gilbert Cc: Martin K. Petersen Cc: Damien Le Moal Cc: Christoph Hellwig Cc: Ming Lei 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 c44c523bde2c..c92bd6d00249 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;