linux-kernel - [PATCH AUTOSEL 6.1 48/61] usb: uas: set host status byte on data completion error

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Message-ID: <20240801002803.3935985-48-sashal@kernel.org>
Date: Wed, 31 Jul 2024 20:26:06 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Shantanu Goel <sgoel01@...oo.com>,
	Oliver Neukum <oneukum@...e.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Sasha Levin <sashal@...nel.org>,
	stern@...land.harvard.edu,
	linux-usb@...r.kernel.org,
	linux-scsi@...r.kernel.org,
	usb-storage@...ts.one-eyed-alien.net
Subject: [PATCH AUTOSEL 6.1 48/61] usb: uas: set host status byte on data completion error

From: Shantanu Goel <sgoel01@...oo.com>

[ Upstream commit 9d32685a251a754f1823d287df233716aa23bcb9 ]

Set the host status byte when a data completion error is encountered
otherwise the upper layer may end up using the invalid zero'ed data.
The following output was observed from scsi/sd.c prior to this fix.

[   11.872824] sd 0:0:0:1: [sdf] tag#9 data cmplt err -75 uas-tag 1 inflight:
[   11.872826] sd 0:0:0:1: [sdf] tag#9 CDB: Read capacity(16) 9e 10 00 00 00 00 00 00 00 00 00 00 00 20 00 00
[   11.872830] sd 0:0:0:1: [sdf] Sector size 0 reported, assuming 512.

Signed-off-by: Shantanu Goel <sgoel01@...oo.com>
Acked-by: Oliver Neukum <oneukum@...e.com>
Link: https://lore.kernel.org/r/87msnx4ec6.fsf@yahoo.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/usb/storage/uas.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c
index af619efe8eabf..b565c1eb84b3b 100644
--- a/drivers/usb/storage/uas.c
+++ b/drivers/usb/storage/uas.c
@@ -422,6 +422,7 @@ static void uas_data_cmplt(struct urb *urb)
 			uas_log_cmd_state(cmnd, "data cmplt err", status);
 		/* error: no data transfered */
 		scsi_set_resid(cmnd, sdb->length);
+		set_host_byte(cmnd, DID_ERROR);
 	} else {
 		scsi_set_resid(cmnd, sdb->length - urb->actual_length);
 	}
-- 
2.43.0