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    SubjectRe: 2.6.23-rc2-mm1: sleeping function called from invalid context at kernel/mutex.c:86

    * Andrew Morton <akpm@linux-foundation.org> wrote:

    > We seem to have made a mess in there. timer_list_show() ends up
    > calling lookup_module_symbol_name(), which takes a mutex. However
    > print_symbol() (which is called at oops time, interrupt time, etc)
    > calls module_address_lookup(), which is basically the same, only it
    > doesn't take the mutex.

    hm, current upstream does:

    static void print_name_offset(struct seq_file *m, void *sym)
    {
    char symname[KSYM_NAME_LEN];

    if (lookup_symbol_name((unsigned long)sym, symname) < 0)

    why was that changed? I think symbol lookups for debug purposes have to
    be lockless, fundamentally.

    Ingo
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