[Kernel-packages] [Bug 1502946] Re: kernel crash on m400 arm64 server cartridge

** Tags removed: verification-needed-wily ** Tags added: verification-done-wily -- 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/1502946 Title: kernel crash on m400 arm64 server cartridge

[Kernel-packages] [Bug 1502946] Re: kernel crash on m400 arm64 server cartridge

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- wily' to 'verification-done-wily'. If verification is not done by 5 working days from

[Kernel-packages] [Bug 1502946] Re: kernel crash on m400 arm64 server cartridge

This bug was fixed in the package linux - 4.2.0-16.19 --- linux (4.2.0-16.19) wily; urgency=low [ Tim Gardner ] * Release Tracking Bug - LP: #1504143 * [Config] CONFIG_X86_LEGACY_VM86=y, CONFIG_VM86=y for i386 - LP: #1499089 * [Config] CONFIG_MODIFY_LDT_SYSCALL=y

[Kernel-packages] [Bug 1502946] Re: kernel crash on m400 arm64 server cartridge

Craig - shall I revert the arm64 NUMA patches ? ** Also affects: linux (Ubuntu Wily) Importance: Critical Status: Confirmed ** Changed in: linux (Ubuntu Wily) Status: Confirmed => In Progress ** Changed in: linux (Ubuntu Wily) Assignee: (unassigned) => Tim Gardner

[Kernel-packages] [Bug 1502946] Re: kernel crash on m400 arm64 server cartridge

Can you see if the crash still occurs if you boot with the 4.2.0-12.14 kernel? It can be downloaded from: https://launchpad.net/ubuntu/+source/linux/4.2.0-12.14 ** Tags added: kernel-key -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to

[Kernel-packages] [Bug 1502946] Re: kernel crash on m400 arm64 server cartridge

@dann - check tip of Wily master-next to review my reverts. -- 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/1502946 Title: kernel crash on m400 arm64 server cartridge Status in linux

[Kernel-packages] [Bug 1502946] Re: kernel crash on m400 arm64 server cartridge

@Tim: Please do - the dtb interface for numa is still in discussion, so I think we can expect the OS/fw interface to change anyway. -- 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/1502946

[Kernel-packages] [Bug 1502946] Re: kernel crash on m400 arm64 server cartridge

fyi, though I do see this backtrace when booting up an X-Gene, in my case it isn't fatal. Rather, I'm hitting an issue later on where modules cannot load, and *that* is fatal. It persists even w/ the numa patches removed. Loading, please wait...

[Kernel-packages] [Bug 1502946] Re: kernel crash on m400 arm64 server cartridge

This appears to be the regression. Rebuilding the kernel w/ CONFIG_ARM64_ERRATUM_843419=n works around it. commit bf0cdf4bfb785129798bc42d6ee8e2558f0934da Author: Will Deacon Date: Tue Mar 17 12:15:02 2015 + arm64: errata: add module build workaround for erratum

[Kernel-packages] [Bug 1502946] Re: kernel crash on m400 arm64 server cartridge

The crash does not reproduce when running with kernel 4.2.0-12.14 . -- 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/1502946 Title: kernel crash on m400 arm64 server cartridge Status in

[Kernel-packages] [Bug 1502946] Re: kernel crash on m400 arm64 server cartridge

So, no need to revert the NUMA patches ? -- 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/1502946 Title: kernel crash on m400 arm64 server cartridge Status in linux package in Ubuntu:

[Kernel-packages] [Bug 1502946] Re: kernel crash on m400 arm64 server cartridge

UBUNTU: [Config] CONFIG_ARM64_ERRATUM_843419=n ** Changed in: linux (Ubuntu Wily) Status: In Progress => Fix Committed -- 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/1502946

[Kernel-packages] [Bug 1502946] Re: kernel crash on m400 arm64 server cartridge

** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- 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/1502946 Title: kernel crash on m400 arm64 server cartridge Status in

[Kernel-packages] [Bug 1502946] Re: kernel crash on m400 arm64 server cartridge

marked as confirmed. I collected info running trusty kernel as current wily wont boot. -- 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/1502946 Title: kernel crash on m400 arm64 server

[Kernel-packages] [Bug 1502946] Re: kernel crash on m400 arm64 server cartridge

apport information ** Tags added: apport-collected trusty uec-images ** Description changed: We've made some progress on bug 1499869 , such that on Friday I actually had successful installs. An attempt at an install today shows a kernel stack trace early in the boot, then the initramfs

[Kernel-packages] [Bug 1502946] Re: kernel crash on m400 arm64 server cartridge

Here is a bit more of that code for context: static int __init numa_register_memblks(struct numa_meminfo *mi) { unsigned long uninitialized_var(pfn_align); int i, nid; /* Account for nodes with cpus and no memory */ node_possible_map = numa_nodes_parsed;

[Kernel-packages] [Bug 1502946] Re: kernel crash on m400 arm64 server cartridge

The dump stack comes from this according to the trace: if (WARN_ON(nodes_empty(node_possible_map))) -- 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/1502946 Title: kernel crash on

[Kernel-packages] [Bug 1502946] Re: kernel crash on m400 arm64 server cartridge

ARM64 NUMA was added and enabled in 4.2.0-13.15, which apparently breaks on the m400. -- 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/1502946 Title: kernel crash on m400 arm64 server

[Kernel-packages] [Bug 1502946] Re: kernel crash on m400 arm64 server cartridge

** Changed in: linux (Ubuntu) Importance: Undecided => Critical -- 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/1502946 Title: kernel crash on m400 arm64 server cartridge Status in