Bug 198161

Summary:	incremental patch-4.9.51-52 on sg.c break Nero 4 nero burning rom application (it works again with patch-4.9.111-112)
Product:	SCSI Drivers	Reporter:	Luc Bertho (luc.bertho)
Component:	Other	Assignee:	scsi_drivers-other
Status:	NEW ---
Severity:	normal	CC:	bvanassche, jth
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	linux-4.9.52 up to linux-4.9.68	Subsystem:
Regression:	No	Bisected commit-id:

Description Luc Bertho 2017-12-14 02:35:42 UTC

Hi

Nero 4 Linux can no longer detect devices since the changes in code in sg.c.
It displays the following message: "Warning: no device detected"...

Regards

Comment 1 Bart Van Assche 2017-12-14 05:14:18 UTC

That's really bad. We need to know whether this issue only occurs with older stable kernels or also in recent kernel versions. Please verify with a recent kernel version. If I e.g. install nerolinux-4.0.0.0b-x86_64.deb in a VM running kernel 4.13.0-19-generic then it correctly recognizes the Qemu DVD.

Comment 2 Johannes Thumshirn 2017-12-14 09:24:09 UTC

(In reply to Jean-Luc from comment #0)
> Hi
> 
> Nero 4 Linux can no longer detect devices since the changes in code in sg.c.
> It displays the following message: "Warning: no device detected"...
> 
> Regards

Can you please re-test with a more recent kernel (e.g. v4.14) ? I have had submitted a fix for exactly this issue with Nero and believe it is gone.

Comment 3 Luc Bertho 2017-12-16 14:02:21 UTC

(In reply to Johannes Thumshirn from comment #2)
> (In reply to Jean-Luc from comment #0)
> > Hi
> > 
> > Nero 4 Linux can no longer detect devices since the changes in code in
> sg.c.
> > It displays the following message: "Warning: no device detected"...
> > 
> > Regards
> 
> Can you please re-test with a more recent kernel (e.g. v4.14) ? I have had
> submitted a fix for exactly this issue with Nero and believe it is gone.

Hello Johannes,
the only versions of the kernel that seem impacted are kernel 4.9.52-> 4.9.69
I saw your fix for the kernel version 4.12 and I checked it successfully with a 4.12.1 kernel
the latest version of the kernel is not affected by this bug.

Versions tested and OK: 
4.12.1 (with your patch)
4.13.1
4.14.5

I also try kernel 4.10.0-42-generic
(VirtualBox, Ubuntu), ok too

Comment 4 Luc Bertho 2017-12-16 14:10:57 UTC

(In reply to Bart Van Assche from comment #1)
> That's really bad. We need to know whether this issue only occurs with older
> stable kernels or also in recent kernel versions. Please verify with a
> recent kernel version. If I e.g. install nerolinux-4.0.0.0b-x86_64.deb in a
> VM running kernel 4.13.0-19-generic then it correctly recognizes the Qemu
> DVD.

Hello Bart,
I compiled and tested version 4.13.1 directly on my laptop
Operating System: Debian GNU / Linux 7.11
everything is OK

Comment 5 Luc Bertho 2018-07-12 00:09:18 UTC

Problem solved with the latest incremental patch (patch-4.9.111-112)