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    SubjectRe: [Bug #13660] Crashes during boot on 2.6.30 / 2.6.31-rc, random programs
    No formal patch has been sent yet, that i am aware of. I have made
    some changes following suggestion by Americo Wang advise, to the

    (patch by Ingo)

    diff --git a/kernel/lockdep_internals.h b/kernel/lockdep_internals.h
    index 699a2ac..031f4c6 100644
    --- a/kernel/lockdep_internals.h
    +++ b/kernel/lockdep_internals.h
    @@ -65,7 +65,7 @@ enum {
    * Stack-trace: tightly packed array of stack backtrace
    * addresses. Protected by the hash_lock.
    -#define MAX_STACK_TRACE_ENTRIES 262144UL
    +#define MAX_STACK_TRACE_ENTRIES 1048576UL

    extern struct list_head all_lock_classes;
    extern struct lock_chain lock_chains[];
    and afterwards, a new bug popped up, solved by changing


    # define MAX_LOCK_DEPTH 48UL


    # define MAX_LOCK_DEPTH 96UL

    I have now found a third limit bug, related to MAX_LOCKDEP_CHAINS,
    which was hidden so far, which im trying to raise and replicate. This
    is being discussed in detail in another message exchange on the lkml,
    between me and Americo.

    Thank you very much for your time,
    Joao Correia
    Centro de Informatica
    Universidade da Beira Interior

    On Mon, Jun 29, 2009 at 1:31 AM, Rafael J. Wysocki<> wrote:
    > This message has been generated automatically as a part of a report
    > of regressions introduced between 2.6.29 and 2.6.30.
    > The following bug entry is on the current list of known regressions
    > introduced between 2.6.29 and 2.6.30.  Please verify if it still should
    > be listed and let me know (either way).
    > Bug-Entry       :
    > Subject         : Crashes during boot on 2.6.30 / 2.6.31-rc, random programs
    > Submitter       : Joao Correia <>
    > Date            : 2009-06-27 16:07 (2 days old)
    > References      :
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