Messages in this thread | | | Date | Thu, 26 Jun 2008 07:40:24 -0500 | From | Jason Wessel <> | Subject | Re: v2.6.26-rc7: BUG: unable to handle kernel NULL pointer dereference |
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Vegard Nossum wrote: > On Thu, Jun 26, 2008 at 4:15 AM, Andrew Morton > <akpm@linux-foundation.org> wrote: > >> Could. But arch/x86/kernel/smpboot.c is an x86-tree file. I'd expect >> the x86 maintainers would like a usable changelog and a Tested-by: (if >> indeed Vegard tested it). >> > > Hi, > > I had the patch (on top of v2.6.26-rc8) in testing for a couple of > hours now, but like I expected, the APIC error is really hard to > reproduce. So I fear that we never hit the failure case in the first > place. On the other hand... I hit a number of (other?) problems: > > 1. Spontaneous reboot. This could have been the APIC error thing, I > have no way to know. I've never seen this before. > 2. NULL pointer dereference in pick_next_task_fair(). Not new. > 3. NULL pointer dereference in page_cgroup_zoneinfo. Never seen this > before (see screenshot #1). > 4. Page fault in I'm guessing configure_kgdbts() during boot. Never > seen this before either (screenshot #2). >
How often does #4 occur?
Perhaps you can email me directly the .config and kernel boot arguments you used? It would be good to determine if the #4 is a victim or culprit of the crash. If it is a culprit I would like to try and fix it.
Thanks, Jason.
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