Add scsi fix

This commit is contained in:
Laura Abbott 2019-07-23 13:41:47 -04:00
parent b6bc920f00
commit 75c686a437
2 changed files with 104 additions and 0 deletions

View File

@ -582,6 +582,8 @@ Patch508: KEYS-Make-use-of-platform-keyring-for-module-signature.patch
# https://patchwork.kernel.org/patch/11029027/ # https://patchwork.kernel.org/patch/11029027/
Patch509: iwlwifi-mvm-disable-TX-AMSDU-on-older-NICs.patch Patch509: iwlwifi-mvm-disable-TX-AMSDU-on-older-NICs.patch
Patch510: scsi-fix-the-dma_max_mapping_size-call.patch
# END OF PATCH DEFINITIONS # END OF PATCH DEFINITIONS
%endif %endif

View File

@ -0,0 +1,102 @@
From patchwork Mon Jul 22 09:20:38 2019
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
X-Patchwork-Submitter: Christoph Hellwig <hch@lst.de>
X-Patchwork-Id: 11051855
Return-Path: <linux-scsi-owner@kernel.org>
Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org
[172.30.200.125])
by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E72EF138D
for <patchwork-linux-scsi@patchwork.kernel.org>;
Mon, 22 Jul 2019 09:20:54 +0000 (UTC)
Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1])
by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C7C362624B
for <patchwork-linux-scsi@patchwork.kernel.org>;
Mon, 22 Jul 2019 09:20:54 +0000 (UTC)
Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486)
id B4FD327861; Mon, 22 Jul 2019 09:20:54 +0000 (UTC)
X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on
pdx-wl-mail.web.codeaurora.org
X-Spam-Level:
X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID,
DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1
Received: from vger.kernel.org (vger.kernel.org [209.132.180.67])
by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 37ED82624B
for <patchwork-linux-scsi@patchwork.kernel.org>;
Mon, 22 Jul 2019 09:20:54 +0000 (UTC)
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
id S1728717AbfGVJUx (ORCPT
<rfc822;patchwork-linux-scsi@patchwork.kernel.org>);
Mon, 22 Jul 2019 05:20:53 -0400
Received: from bombadil.infradead.org ([198.137.202.133]:50656 "EHLO
bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
with ESMTP id S1727744AbfGVJUx (ORCPT
<rfc822;linux-scsi@vger.kernel.org>); Mon, 22 Jul 2019 05:20:53 -0400
DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;
d=infradead.org; s=bombadil.20170209; h=Content-Transfer-Encoding:
MIME-Version:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:
Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender:
Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Id:
List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive;
bh=rozEWPkakpWOVwCBsdppdcawJNVVlIw+Eg8lASKNsgg=;
b=tpkF1ayflIjh50YVCiIn61zsk
585NNt4GTav6znbiEh1nk7blBJDc4sIiGh980AUQln3qSyxICFWhCLRT0GbPYuDr6OYKmlMA+MYn4
YKX1UgcCicQwtRrLctNcdiEyYNDJWADTfK90HK3wQidBEL3ehgl2tjmh7J1mLtWu33buFKJDQLLG2
ctnqQimtuNqiaNzB7V5E0GCta+pc88Y6jjomsupaMd2evzlP002O4FNs9nH2xkE1q06lb00ItDuKT
p7y4RNQw3rVvV+bJqbDefPnWuXcS5g8+A7gWxtwwYSCf75AexTWccRKIeIBdDmmnPn3KAvb+jyrGW
XM4Jvxkpw==;
Received: from 089144207240.atnat0016.highway.bob.at ([89.144.207.240]
helo=localhost)
by bombadil.infradead.org with esmtpsa (Exim 4.92 #3 (Red Hat Linux))
id 1hpUUs-0002Si-9l; Mon, 22 Jul 2019 09:20:42 +0000
From: Christoph Hellwig <hch@lst.de>
To: martin.petersen@oracle.com
Cc: bvanassche@acm.org, tom.leiming@gmail.com, dexuan.linux@gmail.com,
Damien.LeMoal@wdc.com, linux-scsi@vger.kernel.org
Subject: [PATCH] scsi: fix the dma_max_mapping_size call
Date: Mon, 22 Jul 2019 11:20:38 +0200
Message-Id: <20190722092038.17659-1-hch@lst.de>
X-Mailer: git-send-email 2.20.1
MIME-Version: 1.0
X-SRS-Rewrite: SMTP reverse-path rewritten from <hch@infradead.org> by
bombadil.infradead.org. See http://www.infradead.org/rpr.html
Sender: linux-scsi-owner@vger.kernel.org
Precedence: bulk
List-ID: <linux-scsi.vger.kernel.org>
X-Mailing-List: linux-scsi@vger.kernel.org
X-Virus-Scanned: ClamAV using ClamSMTP
We should only call dma_max_mapping_size for devices that have a DMA
mask set, otherwise we can run into a NULL pointer dereference that
will crash the system.
Also we need to do right shift to get the sectors from the size in
bytes, not a left shift.
Fixes: bdd17bdef7d8 ("scsi: core: take the DMA max mapping size into account")
Reported-by: Bart Van Assche <bvanassche@acm.org>
Reported-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Guilherme G. Piccoli <gpiccoli@canonical.com>
---
drivers/scsi/scsi_lib.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 9381171c2fc0..11e64b50497f 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1784,8 +1784,10 @@ void __scsi_init_queue(struct Scsi_Host *shost, struct request_queue *q)
blk_queue_max_integrity_segments(q, shost->sg_prot_tablesize);
}
- shost->max_sectors = min_t(unsigned int, shost->max_sectors,
- dma_max_mapping_size(dev) << SECTOR_SHIFT);
+ if (dev->dma_mask) {
+ shost->max_sectors = min_t(unsigned int, shost->max_sectors,
+ dma_max_mapping_size(dev) >> SECTOR_SHIFT);
+ }
blk_queue_max_hw_sectors(q, shost->max_sectors);
if (shost->unchecked_isa_dma)
blk_queue_bounce_limit(q, BLK_BOUNCE_ISA);