[Kernel-packages] [Bug 1787258] Re: 3.13.0-155.205 Kernel Panic - divide by zero
Tested on a few AWS instances that wouldn't boot on 3.13.0-155.205 and they are now back to normal after upgrading to 3.13.0-156.206. Thanks for the quick fix! -- 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/1787258 Title: 3.13.0-155.205 Kernel Panic - divide by zero Status in linux package in Ubuntu: Confirmed Status in linux source package in Trusty: Fix Released Bug description: [Impact] Booting the 3.13.0-155.205 generic kernel on a m3 AWS ec2 instance results in a kernel panic during boot. [Test Case] Boot with the 3.13.0-155.205 kernel on an m3 instance and verify that it panics on boot. Boot a patched kernel on an m3 instance and verify that it boots, without a panic, and that the following warning is present in the kernel logs: smpboot: x86_max_cores == zero !?!? [Regression Potential] The only potential for regressions is in systems that panic while bootnig. [Original Report] We have updated our 14.04 aws ec2 instances from 3.13.0-153.204 to 3.13.0-155.205, and upon reboot they all kernel panic. full log attached. [0.064081] FEATURE SPEC_CTRL Not Present [0.068730] mce: CPU supports 2 MCE banks [0.072027] Last level iTLB entries: 4KB 512, 2MB 0, 4MB 0 [0.072027] Last level dTLB entries: 4KB 512, 2MB 0, 4MB 0 [0.080004] Spectre V2 mitigation: Mitigation: Full generic retpoline [0.084004] Spectre V2 mitigation: Speculation control IBPB not-supported IBRS not-supported [0.088005] Speculative Store Bypass: Vulnerable [0.092402] Freeing SMP alternatives memory: 32K (81e7a000 - 81e82000) [0.104581] ACPI: Core revision 20131115 [0.111088] ACPI: All ACPI Tables successfully acquired [0.114991] ftrace: allocating 28746 entries in 113 pages [0.160066] divide error: [#1] SMP [0.163922] Modules linked in: [0.164000] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.13.0-155-generic #205-Ubuntu [0.164000] Hardware name: Xen HVM domU, BIOS 4.2.amazon 08/24/2006 [0.164000] task: 8801e4828000 ti: 8801e4826000 task.ti: 8801e4826000 [0.164000] RIP: 0010:[] [] smp_store_boot_cpu_info+0x58/0x191 [0.164000] RSP: :8801e4827e98 EFLAGS: 00010286 [0.164000] RAX: 000e RBX: 81d18980 RCX: [0.164000] RDX: RSI: 00d0 RDI: 8801efc13380 [0.164000] RBP: 8801e4827ec0 R08: 81d18988 R09: 0004 [0.164000] R10: 8180b6c0 R11: 0001f8ecf7bca282 R12: 00013280 [0.164000] R13: R14: 0100 R15: d088 [0.164000] FS: () GS:8801efc0() knlGS: [0.164000] CS: 0010 DS: ES: CR0: 80050033 [0.164000] CR2: 8801e000 CR3: 01c0e000 CR4: 00160670 [0.164000] Stack: [0.164000] 81d18980 00013280 0246 0100 [0.164000] 8801e4827ef0 81d4bb82 81e5df18 [0.164000] 8801e4828650 0246 0001 8801e4827f00 [0.164000] Call Trace: [0.164000] [] native_smp_prepare_cpus+0x57/0x3e0 [0.164000] [] xen_hvm_smp_prepare_cpus+0x9/0x2e [0.164000] [] kernel_init_freeable+0xa7/0x1eb [0.164000] [] ? rest_init+0x80/0x80 [0.164000] [] kernel_init+0xe/0x130 [0.164000] [] ret_from_fork+0x6e/0xa0 [0.164000] [] ? rest_init+0x80/0x80 [0.164000] Code: 48 89 c7 41 83 cd ff 41 54 53 f3 a5 66 c7 80 da 00 00 00 00 00 be d0 00 00 00 0f b7 0d 20 a9 fc ff 8b 05 e2 c5 28 00 8d 44 01 ff f1 31 d2 89 05 c8 c2 fc ff 8d 81 ff 7f 00 00 f7 f1 89 c3 89 [0.164000] RIP [] smp_store_boot_cpu_info+0x58/0x191 [0.164000] RSP [0.324006] ---[ end trace 8671c9f8a4dc811d ]--- [0.328017] Kernel panic - not syncing: Attempted to kill init! exitcode=0x000b [0.328017] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1787258/+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
[Kernel-packages] [Bug 1787258] Re: 3.13.0-155.205 Kernel Panic - divide by zero
** Information type changed from Public Security to Public -- 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/1787258 Title: 3.13.0-155.205 Kernel Panic - divide by zero Status in linux package in Ubuntu: Confirmed Status in linux source package in Trusty: Fix Committed Bug description: [Impact] Booting the 3.13.0-155.205 generic kernel on a m3 AWS ec2 instance results in a kernel panic during boot. [Test Case] Boot with the 3.13.0-155.205 kernel on an m3 instance and verify that it panics on boot. Boot a patched kernel on an m3 instance and verify that it boots, without a panic, and that the following warning is present in the kernel logs: smpboot: x86_max_cores == zero !?!? [Regression Potential] The only potential for regressions is in systems that panic while bootnig. [Original Report] We have updated our 14.04 aws ec2 instances from 3.13.0-153.204 to 3.13.0-155.205, and upon reboot they all kernel panic. full log attached. [0.064081] FEATURE SPEC_CTRL Not Present [0.068730] mce: CPU supports 2 MCE banks [0.072027] Last level iTLB entries: 4KB 512, 2MB 0, 4MB 0 [0.072027] Last level dTLB entries: 4KB 512, 2MB 0, 4MB 0 [0.080004] Spectre V2 mitigation: Mitigation: Full generic retpoline [0.084004] Spectre V2 mitigation: Speculation control IBPB not-supported IBRS not-supported [0.088005] Speculative Store Bypass: Vulnerable [0.092402] Freeing SMP alternatives memory: 32K (81e7a000 - 81e82000) [0.104581] ACPI: Core revision 20131115 [0.111088] ACPI: All ACPI Tables successfully acquired [0.114991] ftrace: allocating 28746 entries in 113 pages [0.160066] divide error: [#1] SMP [0.163922] Modules linked in: [0.164000] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.13.0-155-generic #205-Ubuntu [0.164000] Hardware name: Xen HVM domU, BIOS 4.2.amazon 08/24/2006 [0.164000] task: 8801e4828000 ti: 8801e4826000 task.ti: 8801e4826000 [0.164000] RIP: 0010:[] [] smp_store_boot_cpu_info+0x58/0x191 [0.164000] RSP: :8801e4827e98 EFLAGS: 00010286 [0.164000] RAX: 000e RBX: 81d18980 RCX: [0.164000] RDX: RSI: 00d0 RDI: 8801efc13380 [0.164000] RBP: 8801e4827ec0 R08: 81d18988 R09: 0004 [0.164000] R10: 8180b6c0 R11: 0001f8ecf7bca282 R12: 00013280 [0.164000] R13: R14: 0100 R15: d088 [0.164000] FS: () GS:8801efc0() knlGS: [0.164000] CS: 0010 DS: ES: CR0: 80050033 [0.164000] CR2: 8801e000 CR3: 01c0e000 CR4: 00160670 [0.164000] Stack: [0.164000] 81d18980 00013280 0246 0100 [0.164000] 8801e4827ef0 81d4bb82 81e5df18 [0.164000] 8801e4828650 0246 0001 8801e4827f00 [0.164000] Call Trace: [0.164000] [] native_smp_prepare_cpus+0x57/0x3e0 [0.164000] [] xen_hvm_smp_prepare_cpus+0x9/0x2e [0.164000] [] kernel_init_freeable+0xa7/0x1eb [0.164000] [] ? rest_init+0x80/0x80 [0.164000] [] kernel_init+0xe/0x130 [0.164000] [] ret_from_fork+0x6e/0xa0 [0.164000] [] ? rest_init+0x80/0x80 [0.164000] Code: 48 89 c7 41 83 cd ff 41 54 53 f3 a5 66 c7 80 da 00 00 00 00 00 be d0 00 00 00 0f b7 0d 20 a9 fc ff 8b 05 e2 c5 28 00 8d 44 01 ff f1 31 d2 89 05 c8 c2 fc ff 8d 81 ff 7f 00 00 f7 f1 89 c3 89 [0.164000] RIP [] smp_store_boot_cpu_info+0x58/0x191 [0.164000] RSP [0.324006] ---[ end trace 8671c9f8a4dc811d ]--- [0.328017] Kernel panic - not syncing: Attempted to kill init! exitcode=0x000b [0.328017] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1787258/+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
[Kernel-packages] [Bug 1787258] Re: 3.13.0-155.205 Kernel Panic - divide by zero
** Information type changed from Public to Public Security -- 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/1787258 Title: 3.13.0-155.205 Kernel Panic - divide by zero Status in linux package in Ubuntu: Confirmed Status in linux source package in Trusty: Fix Committed Bug description: [Impact] Booting the 3.13.0-155.205 generic kernel on a m3 AWS ec2 instance results in a kernel panic during boot. [Test Case] Boot with the 3.13.0-155.205 kernel on an m3 instance and verify that it panics on boot. Boot a patched kernel on an m3 instance and verify that it boots, without a panic, and that the following warning is present in the kernel logs: smpboot: x86_max_cores == zero !?!? [Regression Potential] The only potential for regressions is in systems that panic while bootnig. [Original Report] We have updated our 14.04 aws ec2 instances from 3.13.0-153.204 to 3.13.0-155.205, and upon reboot they all kernel panic. full log attached. [0.064081] FEATURE SPEC_CTRL Not Present [0.068730] mce: CPU supports 2 MCE banks [0.072027] Last level iTLB entries: 4KB 512, 2MB 0, 4MB 0 [0.072027] Last level dTLB entries: 4KB 512, 2MB 0, 4MB 0 [0.080004] Spectre V2 mitigation: Mitigation: Full generic retpoline [0.084004] Spectre V2 mitigation: Speculation control IBPB not-supported IBRS not-supported [0.088005] Speculative Store Bypass: Vulnerable [0.092402] Freeing SMP alternatives memory: 32K (81e7a000 - 81e82000) [0.104581] ACPI: Core revision 20131115 [0.111088] ACPI: All ACPI Tables successfully acquired [0.114991] ftrace: allocating 28746 entries in 113 pages [0.160066] divide error: [#1] SMP [0.163922] Modules linked in: [0.164000] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.13.0-155-generic #205-Ubuntu [0.164000] Hardware name: Xen HVM domU, BIOS 4.2.amazon 08/24/2006 [0.164000] task: 8801e4828000 ti: 8801e4826000 task.ti: 8801e4826000 [0.164000] RIP: 0010:[] [] smp_store_boot_cpu_info+0x58/0x191 [0.164000] RSP: :8801e4827e98 EFLAGS: 00010286 [0.164000] RAX: 000e RBX: 81d18980 RCX: [0.164000] RDX: RSI: 00d0 RDI: 8801efc13380 [0.164000] RBP: 8801e4827ec0 R08: 81d18988 R09: 0004 [0.164000] R10: 8180b6c0 R11: 0001f8ecf7bca282 R12: 00013280 [0.164000] R13: R14: 0100 R15: d088 [0.164000] FS: () GS:8801efc0() knlGS: [0.164000] CS: 0010 DS: ES: CR0: 80050033 [0.164000] CR2: 8801e000 CR3: 01c0e000 CR4: 00160670 [0.164000] Stack: [0.164000] 81d18980 00013280 0246 0100 [0.164000] 8801e4827ef0 81d4bb82 81e5df18 [0.164000] 8801e4828650 0246 0001 8801e4827f00 [0.164000] Call Trace: [0.164000] [] native_smp_prepare_cpus+0x57/0x3e0 [0.164000] [] xen_hvm_smp_prepare_cpus+0x9/0x2e [0.164000] [] kernel_init_freeable+0xa7/0x1eb [0.164000] [] ? rest_init+0x80/0x80 [0.164000] [] kernel_init+0xe/0x130 [0.164000] [] ret_from_fork+0x6e/0xa0 [0.164000] [] ? rest_init+0x80/0x80 [0.164000] Code: 48 89 c7 41 83 cd ff 41 54 53 f3 a5 66 c7 80 da 00 00 00 00 00 be d0 00 00 00 0f b7 0d 20 a9 fc ff 8b 05 e2 c5 28 00 8d 44 01 ff f1 31 d2 89 05 c8 c2 fc ff 8d 81 ff 7f 00 00 f7 f1 89 c3 89 [0.164000] RIP [] smp_store_boot_cpu_info+0x58/0x191 [0.164000] RSP [0.324006] ---[ end trace 8671c9f8a4dc811d ]--- [0.328017] Kernel panic - not syncing: Attempted to kill init! exitcode=0x000b [0.328017] To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1787258/+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
