** Changed in: linux (Ubuntu) Importance: Undecided => Medium -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1621277
Title: Kernel oops - mmc_ioctl_cdrom_read_audio+0x212/0x3b0 (CDROMREADAUDIO ioctl while ejecting) Status in linux package in Ubuntu: Confirmed Bug description: While executing the CDROMREADAUDIO ioctl and the disc is ejected, the kernel oops happens. This is similar to bug #1580776, but the stack trace is different. dmesg snippet: [ 333.283022] BUG: unable to handle kernel NULL pointer dereference at 0000000000000002 [ 333.283105] IP: [<ffffffff8160a112>] mmc_ioctl_cdrom_read_audio+0x212/0x3b0 [ 333.283174] PGD 38275e067 PUD 382750067 PMD 0 [ 333.283223] Oops: 0000 [#1] SMP I'm attaching a program to small demonstrate the issue. The disc should be ejected after "Beginning to read audio" is written to stdout. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-36-generic 4.4.0-36.55 ProcVersionSignature: Ubuntu 4.4.0-36.55-generic 4.4.16 Uname: Linux 4.4.0-36-generic x86_64 NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: clone2727 4085 F.... pulseaudio /dev/snd/controlC1: clone2727 4085 F.... pulseaudio CurrentDesktop: GNOME-Flashback:Unity Date: Wed Sep 7 19:58:41 2016 HibernationDevice: RESUME=UUID=8125cf86-bf3f-4fd5-b488-ada316ef39e1 InstallationDate: Installed on 2015-08-14 (390 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) MachineType: ASUSTeK COMPUTER INC. G551JW ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-36-generic.efi.signed root=UUID=e148a51e-0e19-43d7-95b7-bd6be2bd4adb ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-36-generic N/A linux-backports-modules-4.4.0-36-generic N/A linux-firmware 1.157.3 SourcePackage: linux UpgradeStatus: Upgraded to xenial on 2016-04-27 (133 days ago) dmi.bios.date: 01/16/2015 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: G551JW.202 dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: G551JW dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: 1.0 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK COMPUTER INC. dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrG551JW.202:bd01/16/2015:svnASUSTeKCOMPUTERINC.:pnG551JW:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnG551JW:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0: dmi.product.name: G551JW dmi.product.version: 1.0 dmi.sys.vendor: ASUSTeK COMPUTER INC. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1621277/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
