From patchwork Mon Jun 29 07:20:13 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 11632145 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D40A4913 for ; Mon, 29 Jun 2020 20:35:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BBEBA20759 for ; Mon, 29 Jun 2020 20:35:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389029AbgF2Uev (ORCPT ); Mon, 29 Jun 2020 16:34:51 -0400 Received: from mx2.suse.de ([195.135.220.15]:59454 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732198AbgF2TVe (ORCPT ); Mon, 29 Jun 2020 15:21:34 -0400 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 58D87B0BA; Mon, 29 Jun 2020 07:20:56 +0000 (UTC) From: Hannes Reinecke To: "Martin K. Petersen" Cc: Christoph Hellwig , James Bottomley , Bart van Assche , Don Brace , John Garry , linux-scsi@vger.kernel.org, Hannes Reinecke Subject: [PATCH 14/22] snic: check for started requests in snic_hba_reset_cmpl_handler() Date: Mon, 29 Jun 2020 09:20:13 +0200 Message-Id: <20200629072021.9864-15-hare@suse.de> X-Mailer: git-send-email 2.16.4 In-Reply-To: <20200629072021.9864-1-hare@suse.de> References: <20200629072021.9864-1-hare@suse.de> Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org snic_hba_reset_cmpl_handler() is using scsi_host_find_tag() to map id to a scsi command. However, as per discussion on the mailinglist scsi_host_find_tag() might return a non-started request, so we need to check the returned command with blk_mq_request_started() to avoid the function tripping over a non-initialized command. Signed-off-by: Hannes Reinecke --- drivers/scsi/snic/snic_scsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/snic/snic_scsi.c b/drivers/scsi/snic/snic_scsi.c index 9f9a497beb5c..b000a926e194 100644 --- a/drivers/scsi/snic/snic_scsi.c +++ b/drivers/scsi/snic/snic_scsi.c @@ -1020,7 +1020,7 @@ snic_hba_reset_cmpl_handler(struct snic *snic, struct snic_fw_req *fwreq) } sc = scsi_host_find_tag(snic->shost, cmnd_id); - if (!sc) { + if (!sc || !blk_mq_request_started(sc->request)) { atomic64_inc(&snic->s_stats.io.sc_null); SNIC_HOST_ERR(snic->shost, "reset_cmpl: sc is NULL - Hdr Stat %s Tag 0x%x\n",