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    SubjectRe: System freeze on reboot - general protection fault
    From
    2009/8/13 Christoph Lameter <cl@linux-foundation.org>:
    > On Thu, 13 Aug 2009, Zdenek Kabelac wrote:
    >
    >> > I've added authors of some recent conntrack commits to Cc: - maybe
    >> > they might know?
    >>
    >> I've tested v2.6.30 - and it's crashing in the same way - so any other
    >> starting point where slub has the same detection mechanism and
    >> conntrack module should be working reliable ?
    >
    > Next point is 2.6.29.
    >

    Ok - played lengthy game between 2.6.29 which appeared to be ok and 2.6.30

    And the winner is: ea781f197d6a835cbb93a0bf88ee1696296ed8aa
    netfilter: nf_conntrack: use SLAB_DESTROY_BY_RCU and get rid of call_rcu()

    The error is actually being hit by libvirtd networking rules added
    during boot for my kvm usage.
    (Which I noticed after some time... leading my game into wrong
    direction ;))....

    Here are the some last bisect entries:

    git bisect bad 54dc79fe0d895758bdaa1dcf8512d3d21263d105
    # bad: [5c0de29d06318ec8f6e3ba0d17d62529dbbdc1e8] netfilter:
    nf_conntrack: add generic function to get len of generic policy
    git bisect bad 5c0de29d06318ec8f6e3ba0d17d62529dbbdc1e8
    # good: [e487eb99cf9381a4f8254fa01747a85818da612b] netlink: add nla_policy_len()
    git bisect good e487eb99cf9381a4f8254fa01747a85818da612b
    # good: [1f9352ae2253a97b07b34dcf16ffa3b4ca12c558] netfilter:
    {ip,ip6,arp}_tables: fix incorrect loop detection
    git bisect good 1f9352ae2253a97b07b34dcf16ffa3b4ca12c558
    # bad: [2732c4e45bb67006fdc9ae6669be866762711ab5] netfilter:
    ctnetlink: allocate right-sized ctnetlink skb
    git bisect bad 2732c4e45bb67006fdc9ae6669be866762711ab5


    Unfortunately the commit cannot be reverted with current tree - thus I
    cannot easily check if it's the only problem.
    (warning: too many files (created: 3096 deleted: 1096), skipping
    inexact rename detection
    Automatic revert failed. After resolving the conflicts,)

    Zdenek


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