Louis Bouchard, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test for this with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com/daily-live/current/ .
If it remains an issue, could you please run the following command in the development release from a Terminal (Applications->Accessories->Terminal), as it will automatically gather and attach updated debug information to this report: apport-collect -p linux <replace-with-bug-number> If reproducible, could you also please test the latest upstream kernel available (not the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags: kernel-fixed-upstream kernel-fixed-upstream-VERSION-NUMBER where VERSION-NUMBER is the version number of the kernel you tested. For example: kernel-fixed-upstream-v3.13-rc6 This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag: needs-upstream-testing If the mainline kernel does not fix this bug, please add the following tags: kernel-bug-exists-upstream kernel-bug-exists-upstream-VERSION-NUMBER As well, please remove the tag: needs-upstream-testing Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results. Thank you for your understanding. ** Changed in: linux (Ubuntu) Status: Triaged => 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/1233175 Title: Kernel panic : mempolicy potential use-after-free on server running mongodb Status in “linux” package in Ubuntu: Incomplete Status in “linux” source package in Precise: In Progress Bug description: PID: 21767 TASK: ffff8800874bdc00 CPU: 12 COMMAND: "mongod" #0 [ffff880657cc3820] machine_kexec at ffffffff810393da #1 [ffff880657cc3890] crash_kexec at ffffffff810b53f8 #2 [ffff880657cc3960] oops_end at ffffffff8165e528 #3 [ffff880657cc3990] die at ffffffff810178d8 #4 [ffff880657cc39c0] do_trap at ffffffff8165de94 #5 [ffff880657cc3a20] do_invalid_op at ffffffff81014f65 #6 [ffff880657cc3ac0] invalid_op at ffffffff8166796b [exception RIP: slab_node+46] RIP: ffffffff8115a66e RSP: ffff880657cc3b70 RFLAGS: 00010097 RAX: 0000000000000000 RBX: ffff880657802c00 RCX: 00000000e62f6aef RDX: 0000000000000000 RSI: 0000000000000020 RDI: ffff880abf18a288 RBP: ffff880657cc3b80 R8: 0000000000000001 R9: 0000000100100010 R10: 0000000000000000 R11: 0000000000000022 R12: 0000000000000002 R13: 0000000000000000 R14: 00000000ffffffff R15: 0000000000000020 ORIG_RAX: ffffffffffffffff CS: 0010 SS: 0018 #7 [ffff880657cc3b88] get_any_partial at ffffffff816496a0 #8 [ffff880657cc3c18] __slab_alloc at ffffffff816498cf #9 [ffff880657cc3cc8] __kmalloc_node_track_caller at ffffffff81166f07 #10 [ffff880657cc3d38] __alloc_skb at ffffffff815364c8 #11 [ffff880657cc3d88] __netdev_alloc_skb at ffffffff81536b14 #12 [ffff880657cc3da8] enic_rq_alloc_buf at ffffffffa005484c [enic] #13 [ffff880657cc3e08] enic_poll_msix at ffffffffa00559ff [enic] #14 [ffff880657cc3e58] net_rx_action at ffffffff81545274 #15 [ffff880657cc3ec8] __do_softirq at ffffffff8106f5f8 #16 [ffff880657cc3f38] call_softirq at ffffffff81667bec #17 [ffff880657cc3f50] do_softirq at ffffffff81016305 #18 [ffff880657cc3f70] irq_exit at ffffffff8106f9de #19 [ffff880657cc3f80] do_IRQ at ffffffff816684a3 --- <IRQ stack> --- #20 [ffff880544d8bd48] ret_from_intr at ffffffff8165d82e [exception RIP: __slab_free+737] RIP: ffffffff81649467 RSP: ffff880544d8bdf8 RFLAGS: 00000202 RAX: 0000000000000001 RBX: ffffffffff0a0210 RCX: 0000000180aa00a9 RDX: 0000000180aa00aa RSI: ffffea002afc6201 RDI: ffff880657806200 RBP: ffff880544d8bea8 R8: 0000000000000001 R9: 0000000000000000 R10: ffff8800874be020 R11: ffff8800874be030 R12: ffff880544d8be33 R13: 000000000000000d R14: ffffffff81191895 R15: ffff880544d8bdb8 ORIG_RAX: ffffffffffffff54 CS: 0010 SS: 0018 #21 [ffff880544d8be30] __change_pid at ffffffff81087dca #22 [ffff880544d8beb0] kmem_cache_free at ffffffff81163634 #23 [ffff880544d8bef0] __mpol_put at ffffffff81159937 #24 [ffff880544d8bf00] do_exit at ffffffff8106c75c #25 [ffff880544d8bf70] sys_exit at ffffffff8106caf7 #26 [ffff880544d8bf80] system_call_fastpath at ffffffff81665982 RIP: 00007f6f476b8f37 RSP: 00007f68cbcfdbb0 RFLAGS: 00000202 RAX: 000000000000003c RBX: ffffffff81665982 RCX: ffffffffffffffff RDX: 00007f68cbcfe700 RSI: 00007f6f478c9250 RDI: 0000000000000000 RBP: 0000000000000000 R8: 00007f68cbcfe700 R9: 00007f68e82a0370 R10: 000000007fffffff R11: 0000000000000246 R12: ffffffff8106caf7 R13: ffff880544d8bf78 R14: 0000000000000003 R15: 00007f68f8744a10 ORIG_RAX: 000000000000... 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