Timo Harmonen, thank you for reporting this and helping make Ubuntu better.
In order to allow additional upstream developers to examine the issue, at your earliest convenience, could you please test the latest upstream kernel available from http://kernel.ubuntu.com/~kernel-ppa/mainline/?C=N;O=D ? Please keep in mind the following: 1) The one to test is at the very top line at the top of the page (not the daily folder). 2) The release names are irrelevant. 3) The folder time stamps aren't indicative of when the kernel actually was released upstream. 4) Install instructions are available at https://wiki.ubuntu.com/Kernel/MainlineBuilds . If testing on your main install would be inconvenient, one may: 1) Install Ubuntu to a different partition and then test this there. 2) Backup, or clone the primary install. If the latest kernel did not allow you to test to the issue (ex. you couldn't boot into the OS) please make a comment in your report about this, and continue to test the next most recent kernel version until you can test to the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this issue is fixed in the mainline kernel, please add the following tags by clicking on the yellow circle with a black pencil icon, next to the word Tags, located at the bottom of the report description: kernel-fixed-upstream kernel-fixed-upstream-X.Y-rcZ Where X, and Y are the first two numbers of the kernel version, and Z is the release candidate number if it exists. If the mainline kernel does not fix the issue, please add the following tags: kernel-bug-exists-upstream kernel-bug-exists-upstream-X.Y-rcZ Please note, an error to install the kernel does not fit the criteria of kernel-bug-exists-upstream. Also, you don't need to apport-collect further unless specifically requested to do so. Once testing of the latest upstream kernel is complete, please mark this report Status Confirmed. Please let us know your results. Thank you for your understanding. ** Tags added: latest-bios-2.37 ** Tags added: regression-release ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- 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/1550908 Title: WARNING: CPU: 2 PID: 1 at /build/linux- WmE1Ft/linux-4.4.0/arch/x86/mm/ioremap.c:198 __ioremap_caller+0x2c5/0x380() Status in linux package in Ubuntu: Incomplete Bug description: Xenial beta, Lenovo t440s with latest bios, happens on every restart, newer saw on 15.10. Feb 28 14:07:49 timoha-ll kernel: [ 0.826558] WARNING: CPU: 2 PID: 1 at /build/linux-WmE1Ft/linux-4.4.0/arch/x86/mm/ioremap.c:198 __ioremap_caller+0x2c5/0x380() Feb 28 14:07:49 timoha-ll kernel: [ 0.826559] Info: mapping multiple BARs. Your kernel is fine. Feb 28 14:07:49 timoha-ll kernel: [ 0.826560] Modules linked in: Feb 28 14:07:49 timoha-ll kernel: [ 0.826564] CPU: 2 PID: 1 Comm: swapper/0 Not tainted 4.4.0-8-generic #23-Ubuntu Feb 28 14:07:49 timoha-ll kernel: [ 0.826565] Hardware name: LENOVO 20AQ007SMS/20AQ007SMS, BIOS GJET87WW (2.37 ) 01/12/2016 Feb 28 14:07:49 timoha-ll kernel: [ 0.826567] 0000000000000000 000000009f756ef0 ffff880310263b38 ffffffff813dbba4 Feb 28 14:07:49 timoha-ll kernel: [ 0.826569] ffff880310263b80 ffff880310263b70 ffffffff8107ec12 00000000fed10000 Feb 28 14:07:49 timoha-ll kernel: [ 0.826572] ffffc900018f8000 0000000000006000 0000000000000000 ffff88030ff7a580 Feb 28 14:07:49 timoha-ll kernel: [ 0.826574] Call Trace: Feb 28 14:07:49 timoha-ll kernel: [ 0.826580] [<ffffffff813dbba4>] dump_stack+0x44/0x60 Feb 28 14:07:49 timoha-ll kernel: [ 0.826583] [<ffffffff8107ec12>] warn_slowpath_common+0x82/0xc0 Feb 28 14:07:49 timoha-ll kernel: [ 0.826586] [<ffffffff8107ecac>] warn_slowpath_fmt+0x5c/0x80 Feb 28 14:07:49 timoha-ll kernel: [ 0.826589] [<ffffffff8108548a>] ? iomem_map_sanity_check+0xba/0xd0 Feb 28 14:07:49 timoha-ll kernel: [ 0.826591] [<ffffffff81069ba5>] __ioremap_caller+0x2c5/0x380 Feb 28 14:07:49 timoha-ll kernel: [ 0.826593] [<ffffffff81069c77>] ioremap_nocache+0x17/0x20 Feb 28 14:07:49 timoha-ll kernel: [ 0.826596] [<ffffffff8103c429>] snb_uncore_imc_init_box+0x79/0xb0 Feb 28 14:07:49 timoha-ll kernel: [ 0.826598] [<ffffffff8103b138>] uncore_pci_probe+0xd8/0x1f0 Feb 28 14:07:49 timoha-ll kernel: [ 0.826602] [<ffffffff8142b8c5>] local_pci_probe+0x45/0xa0 Feb 28 14:07:49 timoha-ll kernel: [ 0.826605] [<ffffffff8142cd03>] pci_device_probe+0x103/0x150 Feb 28 14:07:49 timoha-ll kernel: [ 0.826609] [<ffffffff8153dc92>] driver_probe_device+0x222/0x4a0 Feb 28 14:07:49 timoha-ll kernel: [ 0.826612] [<ffffffff8153df94>] __driver_attach+0x84/0x90 Feb 28 14:07:49 timoha-ll kernel: [ 0.826614] [<ffffffff8153df10>] ? driver_probe_device+0x4a0/0x4a0 Feb 28 14:07:49 timoha-ll kernel: [ 0.826617] [<ffffffff8153b8bc>] bus_for_each_dev+0x6c/0xc0 Feb 28 14:07:49 timoha-ll kernel: [ 0.826619] [<ffffffff8153d44e>] driver_attach+0x1e/0x20 Feb 28 14:07:49 timoha-ll kernel: [ 0.826621] [<ffffffff8153cf8b>] bus_add_driver+0x1eb/0x280 Feb 28 14:07:49 timoha-ll kernel: [ 0.826624] [<ffffffff81f691bb>] ? uncore_cpu_setup+0x12/0x12 Feb 28 14:07:49 timoha-ll kernel: [ 0.826627] [<ffffffff8153e830>] driver_register+0x60/0xe0 Feb 28 14:07:49 timoha-ll kernel: [ 0.826630] [<ffffffff8142b1ec>] __pci_register_driver+0x4c/0x50 Feb 28 14:07:49 timoha-ll kernel: [ 0.826632] [<ffffffff81f692b0>] intel_uncore_init+0xf5/0x306 Feb 28 14:07:49 timoha-ll kernel: [ 0.826634] [<ffffffff81f691bb>] ? uncore_cpu_setup+0x12/0x12 Feb 28 14:07:49 timoha-ll kernel: [ 0.826637] [<ffffffff81002123>] do_one_initcall+0xb3/0x200 Feb 28 14:07:49 timoha-ll kernel: [ 0.826641] [<ffffffff8109d4a1>] ? parse_args+0x161/0x4b0 Feb 28 14:07:49 timoha-ll kernel: [ 0.826644] [<ffffffff81f591a5>] kernel_init_freeable+0x173/0x212 Feb 28 14:07:49 timoha-ll kernel: [ 0.826647] [<ffffffff81807990>] ? rest_init+0x80/0x80 Feb 28 14:07:49 timoha-ll kernel: [ 0.826650] [<ffffffff8180799e>] kernel_init+0xe/0xe0 Feb 28 14:07:49 timoha-ll kernel: [ 0.826653] [<ffffffff8181420f>] ret_from_fork+0x3f/0x70 Feb 28 14:07:49 timoha-ll kernel: [ 0.826655] [<ffffffff81807990>] ? rest_init+0x80/0x80 ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-8-generic 4.4.0-8.23 ProcVersionSignature: Ubuntu 4.4.0-8.23-generic 4.4.2 Uname: Linux 4.4.0-8-generic x86_64 ApportVersion: 2.20-0ubuntu3 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: timoha 3021 F.... pulseaudio /dev/snd/controlC1: timoha 3021 F.... pulseaudio CurrentDesktop: Unity Date: Sun Feb 28 14:08:55 2016 HibernationDevice: RESUME=UUID=a397ec47-ee9c-46cb-af31-3f2880b00e85 InstallationDate: Installed on 2015-03-07 (358 days ago) InstallationMedia: Ubuntu-GNOME 15.04 "Vivid Vervet" - Alpha amd64 (20150304) MachineType: LENOVO 20AQ007SMS ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-8-generic root=/dev/mapper/ubuntu--gnome--vg-root ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-4.4.0-8-generic N/A linux-backports-modules-4.4.0-8-generic N/A linux-firmware 1.156 SourcePackage: linux UpgradeStatus: Upgraded to xenial on 2016-02-27 (1 days ago) dmi.bios.date: 01/12/2016 dmi.bios.vendor: LENOVO dmi.bios.version: GJET87WW (2.37 ) dmi.board.asset.tag: Not Available dmi.board.name: 20AQ007SMS dmi.board.vendor: LENOVO dmi.board.version: SDK0E50510 PRO dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrGJET87WW(2.37):bd01/12/2016:svnLENOVO:pn20AQ007SMS:pvrThinkPadT440s:rvnLENOVO:rn20AQ007SMS:rvrSDK0E50510PRO:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 20AQ007SMS dmi.product.version: ThinkPad T440s dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1550908/+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