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    SubjectRe: oom-killer: gfp_mask=0xd1 with 2.6.12 on EM64T
    J M Cerqueira Esteves <jmce@artenumerica.com> wrote:
    >
    > On a dual EM64T Xeon with 4GB of RAM, I am getting apparently "innocent"
    > processes killed by oom-killer with gfp_mask=0xd1 (with all or almost
    > all swap space still available).
    >

    That's quite an old kernel. If this is the notorious bio-uses-GFP_DMA bug
    then I'd have expected this kernel to be useless from day one. Did you
    install it recently?

    > I haven't tried 2.6.15 kernels yet, but according to recent reports in
    > https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=175173
    > even those may still have oom-killer problems (like this?).

    Yes, I expect it's the same still-unfixed bug.

    If you're feeling keen you could add this patch which would confirm it:

    --- devel/mm/oom_kill.c~a 2006-03-02 01:16:17.000000000 -0800
    +++ devel-akpm/mm/oom_kill.c 2006-03-02 01:16:32.000000000 -0800
    @@ -258,6 +258,8 @@ void out_of_memory(unsigned int __nocast
    struct mm_struct *mm = NULL;
    task_t * p;

    + dump_stack();
    +
    read_lock(&tasklist_lock);
    retry:
    p = select_bad_process();
    _

    And if it's that bug then I'm afraid you'll have to sit tight until 2.6.16.
    We shouldn't release 2.6.16 until this thing is fixed.

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