This bug is missing log files that will aid in diagnosing the problem. >From a terminal window please run:
apport-collect 1577748 and then change the status of the bug to 'Confirmed'. If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'. This change has been made by an automated script, maintained by the Ubuntu Kernel Team. ** Changed in: linux (Ubuntu) Status: New => Incomplete ** Tags added: trusty -- 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/1577748 Title: OOPS on wily+ for Haswell-ULT and Broadwell Status in linux package in Ubuntu: Incomplete Bug description: After upgrading to the wily 4.2 kernel, we see early OOPSes similar to the following on Haswell-ULT and Broadwell processors: ------------[ cut here ]------------ WARNING: CPU: 1 PID: 1 at /build/linux-lts-wily-MVxxD8/linux-lts-wily-4.2.0/arch/x86/mm/ioremap.c:198 __ioremap_caller+0x2a2/0x360() Info: mapping multiple BARs. Your kernel is fine. Modules linked in: CPU: 1 PID: 1 Comm: swapper/0 Not tainted 4.2.0-34-generic #39~14.04.1-Ubuntu Hardware name: Hewlett-Packard HP EliteBook Folio 1040 G1/213E, BIOS L83 Ver. 01.07 03/28/2014 ffffffff81a91c80 ffff88023522bad8 ffffffff817b5fed 0000000000000001 ffff88023522bb28 ffff88023522bb18 ffffffff8107799a ffffc90000cbe000 ffffc90000cb8000 ffffc90000cb8000 0000000000006000 ffff880230297040 Call Trace: [<ffffffff817b5fed>] dump_stack+0x45/0x57 [<ffffffff8107799a>] warn_slowpath_common+0x8a/0xc0 [<ffffffff81077a16>] warn_slowpath_fmt+0x46/0x50 [<ffffffff81064942>] __ioremap_caller+0x2a2/0x360 [<ffffffff81064a17>] ioremap_nocache+0x17/0x20 [<ffffffff810393c5>] snb_uncore_imc_init_box+0x65/0x90 [<ffffffff81037955>] uncore_pci_probe+0xd5/0x1c0 [<ffffffff813f3a75>] local_pci_probe+0x45/0xa0 [<ffffffff813f4c34>] ? pci_match_device+0xf4/0x120 [<ffffffff813f4d6a>] pci_device_probe+0xca/0x110 [<ffffffff814f6293>] driver_probe_device+0x213/0x460 [<ffffffff814f6570>] __driver_attach+0x90/0xa0 [<ffffffff814f64e0>] ? driver_probe_device+0x460/0x460 [<ffffffff814f409d>] bus_for_each_dev+0x5d/0x90 [<ffffffff814f5c0e>] driver_attach+0x1e/0x20 [<ffffffff814f5760>] bus_add_driver+0x1d0/0x290 [<ffffffff81d606cf>] ? uncore_cpu_setup+0x12/0x12 [<ffffffff814f6f30>] driver_register+0x60/0xe0 [<ffffffff813f33dc>] __pci_register_driver+0x4c/0x50 [<ffffffff81d607b5>] intel_uncore_init+0xe6/0x2fc [<ffffffff81d606cf>] ? uncore_cpu_setup+0x12/0x12 [<ffffffff8100213d>] do_one_initcall+0xcd/0x1f0 [<ffffffff81094e00>] ? parse_args+0x120/0x470 [<ffffffff810b7528>] ? __wake_up+0x48/0x60 [<ffffffff81d512c5>] kernel_init_freeable+0x199/0x226 [<ffffffff81d509a1>] ? initcall_blacklist+0xc0/0xc0 [<ffffffff817a5f50>] ? rest_init+0x80/0x80 [<ffffffff817a5f5e>] kernel_init+0xe/0xe0 [<ffffffff817bd81f>] ret_from_fork+0x3f/0x70 [<ffffffff817a5f50>] ? rest_init+0x80/0x80 ---[ end trace 5f5beae5b9d2dc45 ]--- the issue is fixed in upstream kernels, via two patches: https://lkml.org/lkml/2015/12/11/165 http://lkml.iu.edu/hypermail/linux/kernel/1601.3/03815.html each is a one-liner against the mch_quirk_devices[] structure. [nlb-glaptop](0) $ cat /proc/version_signature Ubuntu 4.2.0-35.40~14.04.1-generic 4.2.8-ckt5 [nlb-glaptop](0) $ [nlb-glaptop](0) $ lsb_release -rd Description: Ubuntu 14.04 LTS Release: 14.04 [nlb-glaptop](0) $ [nlb-glaptop](0) $ apt-cache policy linux-generic-lts-wily linux-generic-lts-wily: Installed: 4.2.0.35.28 Candidate: 4.2.0.35.28 Version table: *** 4.2.0.35.28 0 600 https://rapture-prod.corp.google.com/ goobuntu-trusty-testing-lap...@nlb-glaptop.roam.corp.google.com/main amd64 Packages 100 /var/lib/dpkg/status [nlb-glaptop](0) $ To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1577748/+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