yahoo-eng-team team mailing list archive

[Scott Moser <smoser@xxxxxxxxxx>]

Public bug reported:

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 not finding any network devices and thus failing to mount the iscsi root.

The trace looks like this:
[    0.000000] ------------[ cut here ]------------
[    0.000000] WARNING: CPU: 0 PID: 0 at /build/linux-Nwr5zx/linux-4.2.0/arch/arm64/mm/numa.c:449 numa_init+0x90/0x398()
[    0.000000] Modules linked in:
[    0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 4.2.0-14-generic #16-Ubuntu
[    0.000000] Hardware name: HP ProLiant m400 Server Cartridge (DT)
[    0.000000] Call trace:
[    0.000000] [<ffffffc00008a6e8>] dump_backtrace+0x0/0x150
[    0.000000] [<ffffffc00008a858>] show_stack+0x20/0x30
[    0.000000] [<ffffffc00086cc7c>] dump_stack+0x7c/0x98
[    0.000000] [<ffffffc0000bd900>] warn_slowpath_common+0xa0/0xe0
[    0.000000] [<ffffffc0000bda70>] warn_slowpath_null+0x38/0x50
[    0.000000] [<ffffffc000c05b40>] numa_init+0x8c/0x398
[    0.000000] [<ffffffc000c05e7c>] arm64_numa_init+0x30/0x40
[    0.000000] [<ffffffc000c04b24>] bootmem_init+0x60/0x104
[    0.000000] [<ffffffc000c052a0>] paging_init+0x198/0x224
[    0.000000] [<ffffffc000c01e98>] setup_arch+0x274/0x5f8
[    0.000000] [<ffffffc000bfe6d0>] start_kernel+0xdc/0x3f4
[    0.000000] ---[ end trace f24b6c88ae00fa9a ]---

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

** Attachment added: "console log of crash"
   https://bugs.launchpad.net/bugs/1502946/+attachment/4484854/+files/my.log

** Also affects: linux (Ubuntu)
   Importance: Undecided
       Status: New

** No longer affects: cloud-init

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https://bugs.launchpad.net/bugs/1502946

Title:
  kernel crash on m400 arm64 server cartridge

Status in linux package in Ubuntu:
  New

Bug description:
  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 not finding any network devices and thus failing to mount the iscsi root.

  The trace looks like this:
  [    0.000000] ------------[ cut here ]------------
  [    0.000000] WARNING: CPU: 0 PID: 0 at /build/linux-Nwr5zx/linux-4.2.0/arch/arm64/mm/numa.c:449 numa_init+0x90/0x398()
  [    0.000000] Modules linked in:
  [    0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 4.2.0-14-generic #16-Ubuntu
  [    0.000000] Hardware name: HP ProLiant m400 Server Cartridge (DT)
  [    0.000000] Call trace:
  [    0.000000] [<ffffffc00008a6e8>] dump_backtrace+0x0/0x150
  [    0.000000] [<ffffffc00008a858>] show_stack+0x20/0x30
  [    0.000000] [<ffffffc00086cc7c>] dump_stack+0x7c/0x98
  [    0.000000] [<ffffffc0000bd900>] warn_slowpath_common+0xa0/0xe0
  [    0.000000] [<ffffffc0000bda70>] warn_slowpath_null+0x38/0x50
  [    0.000000] [<ffffffc000c05b40>] numa_init+0x8c/0x398
  [    0.000000] [<ffffffc000c05e7c>] arm64_numa_init+0x30/0x40
  [    0.000000] [<ffffffc000c04b24>] bootmem_init+0x60/0x104
  [    0.000000] [<ffffffc000c052a0>] paging_init+0x198/0x224
  [    0.000000] [<ffffffc000c01e98>] setup_arch+0x274/0x5f8
  [    0.000000] [<ffffffc000bfe6d0>] start_kernel+0xdc/0x3f4
  [    0.000000] ---[ end trace f24b6c88ae00fa9a ]---

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