print_req_error: critical target error, dev sr0, sector 2097136

Bug #1740289 reported by Cristian Aravena Romero on 2017-12-27
This bug affects 3 people
Affects Status Importance Assigned to Milestone
linux (Ubuntu)

Bug Description


[ 1816.482664] print_req_error: critical target error, dev sr0, sector 2097136


ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.13.0-17-generic 4.13.0-17.20
ProcVersionSignature: Ubuntu 4.13.0-17.20-generic 4.13.8
Uname: Linux 4.13.0-17-generic x86_64
ApportVersion: 2.20.8-0ubuntu5
Architecture: amd64
 /dev/snd/pcmC0D0p: caravena 1655 F...m pulseaudio
 /dev/snd/controlC0: caravena 1655 F.... pulseaudio
CurrentDesktop: ubuntu:GNOME
Date: Wed Dec 27 15:28:36 2017
InstallationDate: Installed on 2017-10-13 (75 days ago)
InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170926)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-4.13.0-17-generic root=UUID=707d0f89-4b1d-4432-9d50-6058dc4c1ee9 ro rootflags=subvol=@ quiet splash vt.handoff=7
 linux-restricted-modules-4.13.0-17-generic N/A
 linux-backports-modules-4.13.0-17-generic N/A
 linux-firmware 1.170
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install) 04/15/2013
dmi.bios.vendor: Phoenix Technologies Ltd.
dmi.bios.version: P14AAJ
dmi.board.asset.tag: Base Board Asset Tag SAMSUNG_NP1234567890
dmi.board.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.board.version: FAB1
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 9
dmi.chassis.vendor: SAMSUNG ELECTRONICS CO., LTD.
dmi.chassis.version: 0.1
dmi.modalias: dmi:bvnPhoenixTechnologiesLtd.:bvrP14AAJ:bd04/15/2013:svnSAMSUNGELECTRONICSCO.,LTD.:pn530U3C/530U4C:pvr0.1:rvnSAMSUNGELECTRONICSCO.,LTD.:rnSAMSUNG_NP1234567890:rvrFAB1:cvnSAMSUNGELECTRONICSCO.,LTD.:ct9:cvr0.1: ChiefRiver System 530U3C/530U4C
dmi.product.version: 0.1

This change was made by a bot.

Changed in linux (Ubuntu):
status: New → Confirmed
Joseph Salisbury (jsalisbury) wrote :

Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?

Would it be possible for you to test the latest upstream kernel? Refer to . Please test the latest v4.15 kernel[0].

If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'.

Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.


Changed in linux (Ubuntu):
importance: Undecided → Medium
status: Confirmed → Incomplete
Łukasz Zemczak (sil2100) wrote :

I saw the exact same messages when running bionic installed through latest cdimage builds of ubuntu. It's visible on boot almost every time (although once I noticed it was not present in the boot logs and dmesg, so it might not be reproducible 100% of the time).

I tried the latest mainline kernel, in this case: 4.15.0-041500rc8 and the issue seems to still be present (output still there). Confirmed I'm running the 4.15 kernel.
Please note my testing environment is a standard kvm instance.


tags: added: kernel-bug-exists-upstream
Changed in linux (Ubuntu):
status: Incomplete → Confirmed
Łukasz Zemczak (sil2100) wrote :

Also, I just wonder why I'm actually seeing this error printed during boot even when the 'quiet splash' options are in the cmdline. I would expect everything to be silenced-out completely in such case.

ubuntu38 (ubuntu38) wrote :

I know this is about Ubuntu but I have exact same issue using an Arch Linux x86_64 installation with kernel 4.15.6 on another computer if that can help to rule out anything.

A. Denton (aquina) wrote :

It's not exactly the same, but I see the following during reboot, when testing Xubuntu 18.04 daily ISO (2018-04-21), on VirtualBox 4.3 installed on a trusty system.

[ 118.XXXXXX] print_req_error: I/O error, dev sr0, sector 1178984
[ 118.XXXXXX] print_req_error: I/O error, dev loop0, sector 1177462


Ubuntu QA Website (ubuntuqa) wrote :

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:

tags: added: iso-testing
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