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[3.13.y-ckt,stable] Patch "sg: fix read() error reporting" has been added to staging queue

Message ID 1427827595-25738-1-git-send-email-kamal@canonical.com
State New
Headers show

Commit Message

Kamal Mostafa March 31, 2015, 6:46 p.m. UTC
This is a note to let you know that I have just added a patch titled

    sg: fix read() error reporting

to the linux-3.13.y-queue branch of the 3.13.y-ckt extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.13.y-queue

This patch is scheduled to be released in version 3.13.11-ckt18.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.13.y-ckt tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

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From 03257245de9a3ea3214b0a16dcb23ebd41116c36 Mon Sep 17 00:00:00 2001
From: Tony Battersby <tonyb@cybernetics.com>
Date: Wed, 11 Feb 2015 11:32:06 -0500
Subject: sg: fix read() error reporting

commit 3b524a683af8991b4eab4182b947c65f0ce1421b upstream.

Fix SCSI generic read() incorrectly returning success after detecting an
error.

Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
Acked-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
---
 drivers/scsi/sg.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--
1.9.1
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Patch

diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index df5e961..eb81c98 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -522,7 +522,7 @@  static ssize_t
 sg_new_read(Sg_fd * sfp, char __user *buf, size_t count, Sg_request * srp)
 {
 	sg_io_hdr_t *hp = &srp->header;
-	int err = 0;
+	int err = 0, err2;
 	int len;

 	if (count < SZ_SG_IO_HDR) {
@@ -551,8 +551,8 @@  sg_new_read(Sg_fd * sfp, char __user *buf, size_t count, Sg_request * srp)
 		goto err_out;
 	}
 err_out:
-	err = sg_finish_rem_req(srp);
-	return (0 == err) ? count : err;
+	err2 = sg_finish_rem_req(srp);
+	return err ? : err2 ? : count;
 }

 static ssize_t