linux-kernel - kernel panic - not syncing: out of memory and no killable processes

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Date:	Wed, 16 Sep 2009 23:36:43 -0400
From:	Eric Paris <eparis@...hat.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	linux-kernel@...r.kernel.org, torvalds@...ux-foundation.org
Subject: kernel panic - not syncing: out of memory and no killable processes

Starting on Sept 14 linux-next became unbootable on my KVM guests.
Latest I tried was linux-next as of today, Sept 16.  I spent the day
today bisecting between next-20090911 and next-20090914 which was the
last and first day linux-next broke.

My fedora 12 install gets to udev starting and then panics with the
message:

Kernel panic - not syncing: Out of memory and no killable processes...

Bisect comes down to: 774a694f8cd08115d130a290d73c6d8563f26b1b
commit 774a694f8cd08115d130a290d73c6d8563f26b1b
Merge: 4f0ac85... e1f8450...
Author: Linus Torvalds <torvalds@...ux-foundation.org>
Date:   Fri Sep 11 13:23:18 2009 -0700

    Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
    
    * 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (64 commits)
      sched: Fix sched::sched_stat_wait tracepoint field
      sched: Disable NEW_FAIR_SLEEPERS for now
      sched: Keep kthreads at default priority
      sched: Re-tune the scheduler latency defaults to decrease worst-case latencies
      sched: Turn off child_runs_first
      sched: Ensure that a child can't gain time over it's parent after fork()
      sched: enable SD_WAKE_IDLE
      sched: Deal with low-load in wake_affine()
      sched: Remove short cut from select_task_rq_fair()
      sched: Turn on SD_BALANCE_NEWIDLE
      sched: Clean up topology.h
      sched: Fix dynamic power-balancing crash
      sched: Remove reciprocal for cpu_power
      sched: Try to deal with low capacity, fix update_sd_power_savings_stats()
      sched: Try to deal with low capacity
      sched: Scale down cpu_power due to RT tasks
      sched: Implement dynamic cpu_power
      sched: Add smt_gain
      sched: Update the cpu_power sum during load-balance
      sched: Add SD_PREFER_SIBLING
      ...

Which doesn't even change code so I'm not sure what that's telling me.
Boot log and config are attached.  Hard to test patches to fix ingo's
selinux disable problems when something from the scheduler appears to be
stopping me from booting at all *smile*

-Eric

View attachment "config" of type "text/x-mpsub" (59572 bytes)

View attachment "Serial-Rawhide2" of type "text/plain" (43371 bytes)