This bug was fixed in the package linux - 3.19.0-10.10 --------------- linux (3.19.0-10.10) vivid; urgency=low
[ Andy Whitcroft ] * [Packaging] control -- make element ordering deterministic * [Config] allow dracult to support initramfs as well - LP: #1109029 * [Packaging] generate live watchdog blacklists - LP: #1432837 [ Leann Ogasawara ] * [Config] CONFIG_KVM_GENERIC_DIRTYLOG_READ_PROTECT=y - LP: #1397860 * rebase to v3.19.2 [ Upstream Kernel Changes ] * thinkpad_acpi: support new BIOS version string pattern - LP: #1417915 * arm64: Invalidate the TLB corresponding to intermediate page table levels - LP: #1432546 * perf tools: Support parsing parameterized events - LP: #1430341 * perf tools: Extend format_alias() to include event parameters - LP: #1430341 * perf Documentation: Add event parameters - LP: #1430341 * perf tools: Document parameterized and symbolic events - LP: #1430341 * perf: provide sysfs_show for struct perf_pmu_events_attr - LP: #1430341 * perf: add PMU_EVENT_ATTR_STRING() helper - LP: #1430341 * perf: define EVENT_DEFINE_RANGE_FORMAT_LITE helper - LP: #1430341 * powerpc/perf/hv-24x7: parse catalog and populate sysfs with events - LP: #1430341 * powerpc/perf/{hv-gpci, hv-common}: generate requests with counters annotated - LP: #1430341 * powerpc/perf/hv-gpci: add the remaining gpci requests - LP: #1430341 * powerpc/perf/hv-24x7: Document sysfs event description entries - LP: #1430341 * powerpc/iommu: Remove IOMMU device references via bus notifier - LP: #1425202 * powerpc/pseries: Fix endian problems with LE migration - LP: #1428351 * intel_idle: support additional Broadwell model - LP: #1400970 * tools/power turbostat: support additional Broadwell model - LP: #1400970 * KVM: x86: flush TLB when D bit is manually changed. - LP: #1397860 * Optimize TLB flush in kvm_mmu_slot_remove_write_access. - LP: #1397860 * KVM: Add generic support for dirty page logging - LP: #1397860 * KVM: x86: switch to kvm_get_dirty_log_protect - LP: #1397860 * KVM: Rename kvm_arch_mmu_write_protect_pt_masked to be more generic for log dirty - LP: #1397860 * KVM: MMU: Add mmu help functions to support PML - LP: #1397860 * KVM: MMU: Explicitly set D-bit for writable spte. - LP: #1397860 * KVM: x86: Change parameter of kvm_mmu_slot_remove_write_access - LP: #1397860 * KVM: x86: Add new dirty logging kvm_x86_ops for PML - LP: #1397860 * KVM: VMX: Add PML support in VMX - LP: #1397860 * HID: multitouch: add support of clickpads * HID: multitouch: Add support for button type usage [ Upstream Kernel Changes ] * rebase to v3.19.2 - LP: #1428947 -- Andy Whitcroft <a...@canonical.com> Mon, 23 Mar 2015 15:28:16 +0000 ** Changed in: linux (Ubuntu) Status: Fix Committed => Fix Released -- 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/1432837 Title: HP Proliant Servers - Kernel Panic - NMI - DL360 & DL380 - HPWDT module loaded Status in linux package in Ubuntu: Fix Released Status in linux source package in Precise: Fix Committed Status in linux source package in Trusty: Fix Committed Status in linux source package in Utopic: Fix Committed Bug description: It was brought to me several situations where users where facing kernel panics when machine was apparently idling (for some HP Proliant Servers like DL 360, DL 380). ILO: "76 CriticalSystem Error03/12/2015 12:4203/12/2015 12:072 An Unrecoverable System Error (NMI) has occurred (System error code 0x0000002B, 0x00000000)" Examples: PID: 0 TASK: ffffffff81c1a480 CPU: 0 COMMAND: "swapper/0" #0 [ffff88085fc05c88] machine_kexec at ffffffff8104eac2 #1 [ffff88085fc05cd8] crash_kexec at ffffffff810f26a3 #2 [ffff88085fc05da0] panic at ffffffff8175b3f2 #3 [ffff88085fc05e20] sched_clock at ffffffff8101c3b9 #4 [ffff88085fc05e30] nmi_handle at ffffffff810170e8 #5 [ffff88085fc05e90] io_check_error at ffffffff8101758e #6 [ffff88085fc05eb0] default_do_nmi at ffffffff810176a9 #7 [ffff88085fc05ed8] do_nmi at ffffffff810177d8 #8 [ffff88085fc05ef0] end_repeat_nmi at ffffffff8176da21 [exception RIP: native_safe_halt+6] RIP: ffffffff81055186 RSP: ffffffff81c03e90 RFLAGS: 00000246 RAX: 0000000000000010 RBX: 0000000000000010 RCX: 0000000000000246 RDX: ffffffff81c03e90 RSI: 0000000000000018 RDI: 0000000000000001 RBP: ffffffff81055186 R8: ffffffff81055186 R9: 0000000000000018 R10: ffffffff81c03e90 R11: 0000000000000246 R12: ffffffffffffffff R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ORIG_RAX: 0000000000000000 CS: 0010 SS: 0018 --- <DOUBLEFAULT exception stack> --- #9 [ffffffff81c03e90] native_safe_halt at ffffffff81055186 #10 [ffffffff81c03e98] default_idle at ffffffff8101d37f #11 [ffffffff81c03eb8] arch_cpu_idle at ffffffff8101dcaf #12 [ffffffff81c03ec8] cpu_startup_entry at ffffffff810b5325 #13 [ffffffff81c03f40] rest_init at ffffffff81751a37 #14 [ffffffff81c03f50] start_kernel at ffffffff81d320b7 #15 [ffffffff81c03f90] x86_64_start_reservations at ffffffff81d315ee #16 [ffffffff81c03fa0] x86_64_start_kernel at ffffffff81d31733 OR PID: 0 TASK: ffffffff81c14440 CPU: 0 COMMAND: "swapper/0" #0 [ffff880fffa07c40] machine_kexec at ffffffff8104b391 #1 [ffff880fffa07cb0] crash_kexec at ffffffff810d5fb8 #2 [ffff880fffa07d80] panic at ffffffff81730335 #3 [ffff880fffa07e00] hpwdt_pretimeout at ffffffffa02378b5 [hpwdt] #4 [ffff880fffa07e20] nmi_handle at ffffffff8174a76a #5 [ffff880fffa07ea0] default_do_nmi at ffffffff8174aacd #6 [ffff880fffa07ed0] do_nmi at ffffffff8174abe0 #7 [ffff880fffa07ef0] end_repeat_nmi at ffffffff81749c81 [exception RIP: intel_idle+204] RIP: ffffffff813f07ec RSP: ffffffff81c01d88 RFLAGS: 00000046 RAX: 0000000000000010 RBX: 0000000000000010 RCX: 0000000000000046 RDX: ffffffff81c01d88 RSI: 0000000000000018 RDI: 0000000000000001 RBP: ffffffff813f07ec R8: ffffffff813f07ec R9: 0000000000000018 R10: ffffffff81c01d88 R11: 0000000000000046 R12: ffffffffffffffff R13: 0000000001c0d000 R14: ffffffff81c01fd8 R15: 0000000000000000 ORIG_RAX: 0000000000000000 CS: 0010 SS: 0018 --- <NMI exception stack> --- #8 [ffffffff81c01d88] intel_idle at ffffffff813f07ec #9 [ffffffff81c01dc0] cpuidle_enter_state at ffffffff815e76cf It turned out that after investigating all idling situations and diverse kernel dump files - where we had most of the CPUs either MWAITing and or "relaxing", we discovered that HPWDT was loaded and corosync was opening /dev/watchdog file, triggering the ILO watchdog timer and not updating frequently enough as ILO expected. As described in /etc/modprobe.d/blacklist-watchdog.conf: """ # Watchdog drivers should not be loaded automatically, but only if a # watchdog daemon is installed. """ We should blacklist module "hpwdt" by default for all Ubuntu versions. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1432837/+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