Re: "attempt to access beyond end of device" on DVD
On Wed, 12 December 2012 Jacek Poplawski wrote: > On 12/12/12, Bruno Prémont wrote: > > On Wed, 12 December 2012 Jacek Poplawski wrote: > >> OK, I was wrong previously. > >> > >> I don't need to reload sr_mod, I only need to remount DVD. > >> > >> The reason I was wrong is I was suspecting that DVD remounts itself > >> after eject, but looks like it doesn't. Also it means that the problem > >> is different than 3 years ago, because I am sure I was remounting DVD > >> by hand and now I use some automount feature of Arch Linux / GNOME3. > > > > What kind of filesystem do you have on your CD/DVDs? > > I backup files with k3b with default settings, so it is iso9660. > > However I don't fully understand how this automount works, I am afraid > this problem it may be related to this mechanism. When I insert first > DVD it's mounted and when I remove DVD and put another one it's still > mounted as before, so maybe driver is confused and still thinks the > size of the DVD is like the first one. Usually you have to unmount CD/DVD to be able to eject it (otherwise tray is locked). I never used automount myself so I can't tell, tough I would expect it to catch "eject" request, unmount and then eject the disc. Bruno -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: "attempt to access beyond end of device" on DVD
On 12/12/12, Bruno Prémont wrote: > On Wed, 12 December 2012 Jacek Poplawski wrote: >> OK, I was wrong previously. >> >> I don't need to reload sr_mod, I only need to remount DVD. >> >> The reason I was wrong is I was suspecting that DVD remounts itself >> after eject, but looks like it doesn't. Also it means that the problem >> is different than 3 years ago, because I am sure I was remounting DVD >> by hand and now I use some automount feature of Arch Linux / GNOME3. > > What kind of filesystem do you have on your CD/DVDs? I backup files with k3b with default settings, so it is iso9660. However I don't fully understand how this automount works, I am afraid this problem it may be related to this mechanism. When I insert first DVD it's mounted and when I remove DVD and put another one it's still mounted as before, so maybe driver is confused and still thinks the size of the DVD is like the first one. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: "attempt to access beyond end of device" on DVD
On Wed, 12 December 2012 Jacek Poplawski wrote: > OK, I was wrong previously. > > I don't need to reload sr_mod, I only need to remount DVD. > > The reason I was wrong is I was suspecting that DVD remounts itself > after eject, but looks like it doesn't. Also it means that the problem > is different than 3 years ago, because I am sure I was remounting DVD > by hand and now I use some automount feature of Arch Linux / GNOME3. What kind of filesystem do you have on your CD/DVDs? [CCing linux-fsdevel as it seems like it may be a isofs or udf issue] Bruno > On 12/12/12, Jacek Poplawski wrote: > >> Did you check if unbinding drivers or unloading their modules has the > >> same effect as rebooting? That might help narrowing the area of code to > >> look at. > > > > You were right. > > I unmounted the DVD, then removed module sr_mod, reloaded it, inserted > > DVD again and copied missing files, now they are OK. > > > > > >> While at it, please tell us how your CD/DVD drive is connected and which > >> controller it's connected to (relevant dmesg parts). > > > > [0.893465] ata5.00: ATAPI: Optiarc DVD RW AD-7203S, 1.05, max UDMA/100 > > [0.906796] ata5.00: configured for UDMA/100 > > (...) > > [1.232096] scsi 4:0:0:0: CD-ROMOptiarc DVD RW > > AD-7203S 1.05 PQ: 0 ANSI: 5 > > (...) > > [ 897.871546] sr0: scsi3-mmc drive: 125x/125x writer dvd-ram cd/rw > > xa/form2 cdda tray > > [ 897.871726] sr 4:0:0:0: Attached scsi CD-ROM sr0 > > > > I don't have other devices to test (and haven't tried loop device). > > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: attempt to access beyond end of device on DVD
On Wed, 12 December 2012 Jacek Poplawski jacekpoplaw...@gmail.com wrote: OK, I was wrong previously. I don't need to reload sr_mod, I only need to remount DVD. The reason I was wrong is I was suspecting that DVD remounts itself after eject, but looks like it doesn't. Also it means that the problem is different than 3 years ago, because I am sure I was remounting DVD by hand and now I use some automount feature of Arch Linux / GNOME3. What kind of filesystem do you have on your CD/DVDs? [CCing linux-fsdevel as it seems like it may be a isofs or udf issue] Bruno On 12/12/12, Jacek Poplawski jacekpoplaw...@gmail.com wrote: Did you check if unbinding drivers or unloading their modules has the same effect as rebooting? That might help narrowing the area of code to look at. You were right. I unmounted the DVD, then removed module sr_mod, reloaded it, inserted DVD again and copied missing files, now they are OK. While at it, please tell us how your CD/DVD drive is connected and which controller it's connected to (relevant dmesg parts). [0.893465] ata5.00: ATAPI: Optiarc DVD RW AD-7203S, 1.05, max UDMA/100 [0.906796] ata5.00: configured for UDMA/100 (...) [1.232096] scsi 4:0:0:0: CD-ROMOptiarc DVD RW AD-7203S 1.05 PQ: 0 ANSI: 5 (...) [ 897.871546] sr0: scsi3-mmc drive: 125x/125x writer dvd-ram cd/rw xa/form2 cdda tray [ 897.871726] sr 4:0:0:0: Attached scsi CD-ROM sr0 I don't have other devices to test (and haven't tried loop device). -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: attempt to access beyond end of device on DVD
On 12/12/12, Bruno Prémont bonb...@linux-vserver.org wrote: On Wed, 12 December 2012 Jacek Poplawski jacekpoplaw...@gmail.com wrote: OK, I was wrong previously. I don't need to reload sr_mod, I only need to remount DVD. The reason I was wrong is I was suspecting that DVD remounts itself after eject, but looks like it doesn't. Also it means that the problem is different than 3 years ago, because I am sure I was remounting DVD by hand and now I use some automount feature of Arch Linux / GNOME3. What kind of filesystem do you have on your CD/DVDs? I backup files with k3b with default settings, so it is iso9660. However I don't fully understand how this automount works, I am afraid this problem it may be related to this mechanism. When I insert first DVD it's mounted and when I remove DVD and put another one it's still mounted as before, so maybe driver is confused and still thinks the size of the DVD is like the first one. -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: attempt to access beyond end of device on DVD
On Wed, 12 December 2012 Jacek Poplawski wrote: On 12/12/12, Bruno Prémont wrote: On Wed, 12 December 2012 Jacek Poplawski wrote: OK, I was wrong previously. I don't need to reload sr_mod, I only need to remount DVD. The reason I was wrong is I was suspecting that DVD remounts itself after eject, but looks like it doesn't. Also it means that the problem is different than 3 years ago, because I am sure I was remounting DVD by hand and now I use some automount feature of Arch Linux / GNOME3. What kind of filesystem do you have on your CD/DVDs? I backup files with k3b with default settings, so it is iso9660. However I don't fully understand how this automount works, I am afraid this problem it may be related to this mechanism. When I insert first DVD it's mounted and when I remove DVD and put another one it's still mounted as before, so maybe driver is confused and still thinks the size of the DVD is like the first one. Usually you have to unmount CD/DVD to be able to eject it (otherwise tray is locked). I never used automount myself so I can't tell, tough I would expect it to catch eject request, unmount and then eject the disc. Bruno -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: "attempt to access beyond end of device" on DVD
OK, I was wrong previously. I don't need to reload sr_mod, I only need to remount DVD. The reason I was wrong is I was suspecting that DVD remounts itself after eject, but looks like it doesn't. Also it means that the problem is different than 3 years ago, because I am sure I was remounting DVD by hand and now I use some automount feature of Arch Linux / GNOME3. On 12/12/12, Jacek Poplawski wrote: >> Did you check if unbinding drivers or unloading their modules has the >> same effect as rebooting? That might help narrowing the area of code to >> look at. > > You were right. > I unmounted the DVD, then removed module sr_mod, reloaded it, inserted > DVD again and copied missing files, now they are OK. > > >> While at it, please tell us how your CD/DVD drive is connected and which >> controller it's connected to (relevant dmesg parts). > > [0.893465] ata5.00: ATAPI: Optiarc DVD RW AD-7203S, 1.05, max UDMA/100 > [0.906796] ata5.00: configured for UDMA/100 > (...) > [1.232096] scsi 4:0:0:0: CD-ROMOptiarc DVD RW > AD-7203S 1.05 PQ: 0 ANSI: 5 > (...) > [ 897.871546] sr0: scsi3-mmc drive: 125x/125x writer dvd-ram cd/rw > xa/form2 cdda tray > [ 897.871726] sr 4:0:0:0: Attached scsi CD-ROM sr0 > > I don't have other devices to test (and haven't tried loop device). > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: "attempt to access beyond end of device" on DVD
> Did you check if unbinding drivers or unloading their modules has the > same effect as rebooting? That might help narrowing the area of code to > look at. You were right. I unmounted the DVD, then removed module sr_mod, reloaded it, inserted DVD again and copied missing files, now they are OK. > While at it, please tell us how your CD/DVD drive is connected and which > controller it's connected to (relevant dmesg parts). [0.893465] ata5.00: ATAPI: Optiarc DVD RW AD-7203S, 1.05, max UDMA/100 [0.906796] ata5.00: configured for UDMA/100 (...) [1.232096] scsi 4:0:0:0: CD-ROMOptiarc DVD RW AD-7203S 1.05 PQ: 0 ANSI: 5 (...) [ 897.871546] sr0: scsi3-mmc drive: 125x/125x writer dvd-ram cd/rw xa/form2 cdda tray [ 897.871726] sr 4:0:0:0: Attached scsi CD-ROM sr0 I don't have other devices to test (and haven't tried loop device). -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: "attempt to access beyond end of device" on DVD
On Wed, 12 December 2012 Jacek Poplawski wrote: > On 12/12/12, Bruno Prémont wrote: > > When it happens, does ejecting and re-inserting the CDs/DVDs also fix the > > problem or is a full reboot mandatory? > > The re-inserting doesn't fix the problem. > Even worse. When it starts - each next DVD is also affected (until reboot). Did you check if unbinding drivers or unloading their modules has the same effect as rebooting? That might help narrowing the area of code to look at. Does it also affect loop-mounted ISOs or is it specific to the CD/DVD drive? As a related test, does it affect CD/DVD drives connected through a different interface? (USB storage, ATA over Ethernet, iSCSI, ...) While at it, please tell us how your CD/DVD drive is connected and which controller it's connected to (relevant dmesg parts). Bruno -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: "attempt to access beyond end of device" on DVD
On 12/12/12, Bruno Prémont wrote: > When it happens, does ejecting and re-inserting the CDs/DVDs also fix the > problem or is a full reboot mandatory? The re-inserting doesn't fix the problem. Even worse. When it starts - each next DVD is also affected (until reboot). -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: "attempt to access beyond end of device" on DVD
Hello, On Mon, 10 December 2012 Jacek Poplawski wrote: > few years ago I noticed annoying bug on Linux, when I was copying > photos from old DVDs I realized that not all files were copied > correctly, there were errors on last files on DVD, you could say "well > that happens, DVD are faulty", but that's not the real issue > > when the problem appears it happens on each DVD I am trying to copy, > last files on each disk have errors > > ...until I reboot Linux, then there are no errors at all and full DVD > is copied correctly. > > Now I needed some files from DVDs and I realized the problem still > exists. After at least three years. I verified that reboot helps and I > also noticed the problem doesn't exist on Windows 7. > > And looks like I wasn't only one who found this: > > https://bugs.launchpad.net/ubuntu/+source/linux/+bug/404472 > > Problem was reported in 2009 on 2.6.28 and closed in 2012. But I > noticed it in last days. > > my system is: > > Linux version 3.6.8-1-ARCH (tobias@T-POWA-LX) (gcc version 4.7.2 (GCC) > ) #1 SMP PREEMPT Mon Nov 26 22:10:40 CET 2012 > > dmesg: > > [ 4017.384169] attempt to access beyond end of device > [ 4017.384171] sr0: rw=0, want=8511124, limit=8433216 > [ 4017.384174] attempt to access beyond end of device > [ 4017.384175] sr0: rw=0, want=8510876, limit=8433216 > > I suspect that people just stopped using CDs and DVDs and that's why > nobody was looking on this problem, or maybe the first though was > always "that DVD is broken, trash it". > > Is there more information I could give you about this issue? Or could > you point me to any ways I could debug it? It's fully reproducible on > my system. Hm, could it be related to some kind of read-ahead? I vaguely remember seeing mails about read-ahead and/or end-of-device. Could this be somehow related? See: - https://lkml.org/lkml/2012/12/3/497 - https://lkml.org/lkml/2012/12/3/510 This applies to 3.7-rc but according to the thread it might still have some interesting things that could be related to what you are seeing. When it happens, does ejecting and re-inserting the CDs/DVDs also fix the problem or is a full reboot mandatory? Bruno -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: attempt to access beyond end of device on DVD
Hello, On Mon, 10 December 2012 Jacek Poplawski jacekpoplaw...@gmail.com wrote: few years ago I noticed annoying bug on Linux, when I was copying photos from old DVDs I realized that not all files were copied correctly, there were errors on last files on DVD, you could say well that happens, DVD are faulty, but that's not the real issue when the problem appears it happens on each DVD I am trying to copy, last files on each disk have errors ...until I reboot Linux, then there are no errors at all and full DVD is copied correctly. Now I needed some files from DVDs and I realized the problem still exists. After at least three years. I verified that reboot helps and I also noticed the problem doesn't exist on Windows 7. And looks like I wasn't only one who found this: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/404472 Problem was reported in 2009 on 2.6.28 and closed in 2012. But I noticed it in last days. my system is: Linux version 3.6.8-1-ARCH (tobias@T-POWA-LX) (gcc version 4.7.2 (GCC) ) #1 SMP PREEMPT Mon Nov 26 22:10:40 CET 2012 dmesg: [ 4017.384169] attempt to access beyond end of device [ 4017.384171] sr0: rw=0, want=8511124, limit=8433216 [ 4017.384174] attempt to access beyond end of device [ 4017.384175] sr0: rw=0, want=8510876, limit=8433216 I suspect that people just stopped using CDs and DVDs and that's why nobody was looking on this problem, or maybe the first though was always that DVD is broken, trash it. Is there more information I could give you about this issue? Or could you point me to any ways I could debug it? It's fully reproducible on my system. Hm, could it be related to some kind of read-ahead? I vaguely remember seeing mails about read-ahead and/or end-of-device. Could this be somehow related? See: - https://lkml.org/lkml/2012/12/3/497 - https://lkml.org/lkml/2012/12/3/510 This applies to 3.7-rc but according to the thread it might still have some interesting things that could be related to what you are seeing. When it happens, does ejecting and re-inserting the CDs/DVDs also fix the problem or is a full reboot mandatory? Bruno -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: attempt to access beyond end of device on DVD
On 12/12/12, Bruno Prémont bonb...@linux-vserver.org wrote: When it happens, does ejecting and re-inserting the CDs/DVDs also fix the problem or is a full reboot mandatory? The re-inserting doesn't fix the problem. Even worse. When it starts - each next DVD is also affected (until reboot). -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: attempt to access beyond end of device on DVD
On Wed, 12 December 2012 Jacek Poplawski wrote: On 12/12/12, Bruno Prémont wrote: When it happens, does ejecting and re-inserting the CDs/DVDs also fix the problem or is a full reboot mandatory? The re-inserting doesn't fix the problem. Even worse. When it starts - each next DVD is also affected (until reboot). Did you check if unbinding drivers or unloading their modules has the same effect as rebooting? That might help narrowing the area of code to look at. Does it also affect loop-mounted ISOs or is it specific to the CD/DVD drive? As a related test, does it affect CD/DVD drives connected through a different interface? (USB storage, ATA over Ethernet, iSCSI, ...) While at it, please tell us how your CD/DVD drive is connected and which controller it's connected to (relevant dmesg parts). Bruno -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: attempt to access beyond end of device on DVD
Did you check if unbinding drivers or unloading their modules has the same effect as rebooting? That might help narrowing the area of code to look at. You were right. I unmounted the DVD, then removed module sr_mod, reloaded it, inserted DVD again and copied missing files, now they are OK. While at it, please tell us how your CD/DVD drive is connected and which controller it's connected to (relevant dmesg parts). [0.893465] ata5.00: ATAPI: Optiarc DVD RW AD-7203S, 1.05, max UDMA/100 [0.906796] ata5.00: configured for UDMA/100 (...) [1.232096] scsi 4:0:0:0: CD-ROMOptiarc DVD RW AD-7203S 1.05 PQ: 0 ANSI: 5 (...) [ 897.871546] sr0: scsi3-mmc drive: 125x/125x writer dvd-ram cd/rw xa/form2 cdda tray [ 897.871726] sr 4:0:0:0: Attached scsi CD-ROM sr0 I don't have other devices to test (and haven't tried loop device). -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: attempt to access beyond end of device on DVD
OK, I was wrong previously. I don't need to reload sr_mod, I only need to remount DVD. The reason I was wrong is I was suspecting that DVD remounts itself after eject, but looks like it doesn't. Also it means that the problem is different than 3 years ago, because I am sure I was remounting DVD by hand and now I use some automount feature of Arch Linux / GNOME3. On 12/12/12, Jacek Poplawski jacekpoplaw...@gmail.com wrote: Did you check if unbinding drivers or unloading their modules has the same effect as rebooting? That might help narrowing the area of code to look at. You were right. I unmounted the DVD, then removed module sr_mod, reloaded it, inserted DVD again and copied missing files, now they are OK. While at it, please tell us how your CD/DVD drive is connected and which controller it's connected to (relevant dmesg parts). [0.893465] ata5.00: ATAPI: Optiarc DVD RW AD-7203S, 1.05, max UDMA/100 [0.906796] ata5.00: configured for UDMA/100 (...) [1.232096] scsi 4:0:0:0: CD-ROMOptiarc DVD RW AD-7203S 1.05 PQ: 0 ANSI: 5 (...) [ 897.871546] sr0: scsi3-mmc drive: 125x/125x writer dvd-ram cd/rw xa/form2 cdda tray [ 897.871726] sr 4:0:0:0: Attached scsi CD-ROM sr0 I don't have other devices to test (and haven't tried loop device). -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
"attempt to access beyond end of device" on DVD
hello, few years ago I noticed annoying bug on Linux, when I was copying photos from old DVDs I realized that not all files were copied correctly, there were errors on last files on DVD, you could say "well that happens, DVD are faulty", but that's not the real issue when the problem appears it happens on each DVD I am trying to copy, last files on each disk have errors ...until I reboot Linux, then there are no errors at all and full DVD is copied correctly. Now I needed some files from DVDs and I realized the problem still exists. After at least three years. I verified that reboot helps and I also noticed the problem doesn't exist on Windows 7. And looks like I wasn't only one who found this: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/404472 Problem was reported in 2009 on 2.6.28 and closed in 2012. But I noticed it in last days. my system is: Linux version 3.6.8-1-ARCH (tobias@T-POWA-LX) (gcc version 4.7.2 (GCC) ) #1 SMP PREEMPT Mon Nov 26 22:10:40 CET 2012 dmesg: [ 4017.384169] attempt to access beyond end of device [ 4017.384171] sr0: rw=0, want=8511124, limit=8433216 [ 4017.384174] attempt to access beyond end of device [ 4017.384175] sr0: rw=0, want=8510876, limit=8433216 I suspect that people just stopped using CDs and DVDs and that's why nobody was looking on this problem, or maybe the first though was always "that DVD is broken, trash it". Is there more information I could give you about this issue? Or could you point me to any ways I could debug it? It's fully reproducible on my system. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
attempt to access beyond end of device on DVD
hello, few years ago I noticed annoying bug on Linux, when I was copying photos from old DVDs I realized that not all files were copied correctly, there were errors on last files on DVD, you could say well that happens, DVD are faulty, but that's not the real issue when the problem appears it happens on each DVD I am trying to copy, last files on each disk have errors ...until I reboot Linux, then there are no errors at all and full DVD is copied correctly. Now I needed some files from DVDs and I realized the problem still exists. After at least three years. I verified that reboot helps and I also noticed the problem doesn't exist on Windows 7. And looks like I wasn't only one who found this: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/404472 Problem was reported in 2009 on 2.6.28 and closed in 2012. But I noticed it in last days. my system is: Linux version 3.6.8-1-ARCH (tobias@T-POWA-LX) (gcc version 4.7.2 (GCC) ) #1 SMP PREEMPT Mon Nov 26 22:10:40 CET 2012 dmesg: [ 4017.384169] attempt to access beyond end of device [ 4017.384171] sr0: rw=0, want=8511124, limit=8433216 [ 4017.384174] attempt to access beyond end of device [ 4017.384175] sr0: rw=0, want=8510876, limit=8433216 I suspect that people just stopped using CDs and DVDs and that's why nobody was looking on this problem, or maybe the first though was always that DVD is broken, trash it. Is there more information I could give you about this issue? Or could you point me to any ways I could debug it? It's fully reproducible on my system. -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/