[Kernel-packages] [Bug 1233175] Re: Kernel panic : mempolicy potential use-after-free on server running mongodb

2014-08-05 Thread Jay Vosburgh
** Changed in: linux (Ubuntu) Assignee: (unassigned) = Jay Vosburgh (jvosburgh) ** Changed in: linux (Ubuntu Precise) Assignee: (unassigned) = Jay Vosburgh (jvosburgh) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in

[Kernel-packages] [Bug 1233175] Re: Kernel panic : mempolicy potential use-after-free on server running mongodb

2014-06-18 Thread Chris J Arges
** Changed in: linux (Ubuntu Precise) Assignee: Chris J Arges (arges) = (unassigned) -- 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

[Kernel-packages] [Bug 1233175] Re: Kernel panic : mempolicy potential use-after-free on server running mongodb

2014-05-15 Thread Munehisa Kamata
I will not be able to provide a reproducer of this immediately. If you agree, please keep this open until I can have it or someone comes here with his/her reproducer. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu.

[Kernel-packages] [Bug 1233175] Re: Kernel panic : mempolicy potential use-after-free on server running mongodb

2014-04-25 Thread Munehisa Kamata
Unfortunately, we don't have a repro case yet. Do you really need a repro case to proceed this? -- 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

[Kernel-packages] [Bug 1233175] Re: Kernel panic : mempolicy potential use-after-free on server running mongodb

2014-04-14 Thread Chris J Arges
** Changed in: linux (Ubuntu Precise) Assignee: Louis Bouchard (louis-bouchard) = Chris J Arges (arges) ** Changed in: linux (Ubuntu) Assignee: Louis Bouchard (louis-bouchard) = (unassigned) -- You received this bug notification because you are a member of Kernel Packages, which is

[Kernel-packages] [Bug 1233175] Re: Kernel panic : mempolicy potential use-after-free on server running mongodb

2014-04-14 Thread Chris J Arges
Can those affected by this issue test this build with the patch identified by @kamatam? http://people.canonical.com/~arges/lp1233175/ Thanks! -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu.

[Kernel-packages] [Bug 1233175] Re: Kernel panic : mempolicy potential use-after-free on server running mongodb

2014-04-14 Thread Munehisa Kamata
Hi Chris, Does anyone of you have a repro case? Although the patch itself is really straightforward, I don't have a reliable repro case of this race unfortunately. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu.

[Kernel-packages] [Bug 1233175] Re: Kernel panic : mempolicy potential use-after-free on server running mongodb

2014-04-14 Thread Chris J Arges
A similar case is here: http://www.mail-archive.com/linux-kernel@vger.kernel.org/msg351591.html It seems like using NUMA with high load MongoDB workloads are factors in causing this crash. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to

[Kernel-packages] [Bug 1233175] Re: Kernel panic : mempolicy potential use-after-free on server running mongodb

2014-03-19 Thread Munehisa Kamata
Hi, We also have experienced this issue with 3.2.0-57-generic. Thanks to the core dump analysis by Louis Bouchard, I could notice that accessing current-mempolicy in interrupt context is totally bad idea, and then found the following commit.

[Kernel-packages] [Bug 1233175] Re: Kernel panic : mempolicy potential use-after-free on server running mongodb

2014-01-05 Thread lois garcia
Gentlemen, so far, both the custom patched kernel and 3.8.0-30-generic have been stable. We will keep one server on this kernel, and a number of servers on 3.2.0-55-generic and on .57, so you'll have data to compare. -- You received this bug notification because you are a member of Kernel

[Kernel-packages] [Bug 1233175] Re: Kernel panic : mempolicy potential use-after-free on server running mongodb

2014-01-03 Thread Louis Bouchard
@christopher, Lois was provided with a custom kernel that includes a patch to be tested. The patch comes from apw, following a kernel dump analysis that I did. From what we could gather, a possible race condition could be responsible for the panics. So far, I have yet to get the confirmation

[Kernel-packages] [Bug 1233175] Re: Kernel panic : mempolicy potential use-after-free on server running mongodb

2014-01-02 Thread Christopher M. Penalver
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

[Kernel-packages] [Bug 1233175] Re: Kernel panic : mempolicy potential use-after-free on server running mongodb

2014-01-02 Thread lois garcia
I have one server, previously affected by the bug, that has been stable for 8 days on 3.8.0-30-generic. We also just provisioned 24 servers with 3.2.0-57-generic (not yet in production). If I can provide any information to you that would help, please let me know through the ticket. -- You

[Kernel-packages] [Bug 1233175] Re: Kernel panic : mempolicy potential use-after-free on server running mongodb

2014-01-02 Thread Christopher M. Penalver
lois garcia, thank you for your comments. It would be most helpful if this could be fully reverse commit bisected from 3.2.0-38-generic to 3.8.0-30-generic in order to identify the fix commit. Could you please do this following https://wiki.ubuntu.com/Kernel/KernelBisection ? -- You received

[Kernel-packages] [Bug 1233175] Re: Kernel panic : mempolicy potential use-after-free on server running mongodb

2013-10-25 Thread Louis Bouchard
** Changed in: linux (Ubuntu Precise) Status: Triaged = In Progress -- 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

[Kernel-packages] [Bug 1233175] Re: Kernel panic : mempolicy potential use-after-free on server running mongodb

2013-10-01 Thread Louis Bouchard
Here is an analysis of the kernel core dump captured for this issue : crash sys KERNEL: vmlinux-3.2.0-38-generic DUMPFILE: VmCore CPUS: 24 DATE: Wed Sep 18 22:34:35 2013 UPTIME: 1 days, 11:33:14 LOAD AVERAGE: 2.04, 2.09, 2.16 TASKS: 6656 NODENAME:

[Kernel-packages] [Bug 1233175] Re: Kernel panic : mempolicy potential use-after-free on server running mongodb

2013-09-30 Thread Andy Whitcroft
** Also affects: linux (Ubuntu Precise) Importance: Undecided Status: New -- 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

[Kernel-packages] [Bug 1233175] Re: Kernel panic : mempolicy potential use-after-free on server running mongodb

2013-09-30 Thread Louis Bouchard
** Changed in: linux (Ubuntu Precise) Status: New = Triaged ** Changed in: linux (Ubuntu Precise) Assignee: (unassigned) = Louis Bouchard (louis-bouchard) ** Changed in: linux (Ubuntu Precise) Importance: Undecided = High -- You received this bug notification because you are a

[Kernel-packages] [Bug 1233175] Re: Kernel panic : mempolicy potential use-after-free on server running mongodb

2013-09-30 Thread Joseph Salisbury
** Tags added: kernel-da-key precise -- 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