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    SubjectRe: [PATCH] fix spurious OOM kills
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    On Wed, 2004-11-24 at 16:52 +0100, Martin MOKREJŠ wrote:
    > > No, it's not related to hyperthreading. It's on the way out.
    > >
    > > I put an additional check into the page allocator. Does this help ?
    >
    > The application got killed. But, consider yourself the stacktrace ... ;)

    > oom-killer: gfp_mask=0x1d2
    > Free pages: 3932kB (112kB HighMem)
    > [<c0103dfd>] dump_stack+0x1e/0x22
    > [<c013ec1c>] out_of_memory+0x97/0xcf
    > [<c0146dc8>] try_to_free_pages+0x163/0x184
    > [<c013fde2>] __alloc_pages+0x27e/0x400
    > [<c0142368>] do_page_cache_readahead+0x15b/0x1b9
    > [<c013c5aa>] filemap_nopage+0x2d4/0x375
    > [<c014aa82>] do_no_page+0xc4/0x38c
    > [<c014af30>] handle_mm_fault+0xde/0x189
    > [<c01166d5>] do_page_fault+0x456/0x6ad
    > [<c0103a43>] error_code+0x2b/0x30
    > Out of Memory: Killed process 6672 (RNAsubopt).
    > RNAsubopt: page allocation failure. order:0, mode:0x1d2
    > [<c0103dfd>] dump_stack+0x1e/0x22
    > [<c013fd90>] __alloc_pages+0x22c/0x400
    > [<c0142368>] do_page_cache_readahead+0x15b/0x1b9
    > [<c013c5aa>] filemap_nopage+0x2d4/0x375
    > [<c014aa82>] do_no_page+0xc4/0x38c
    > [<c014af30>] handle_mm_fault+0xde/0x189
    > [<c01166d5>] do_page_fault+0x456/0x6ad
    > [<c0103a43>] error_code+0x2b/0x30

    Yep, that's expected. The first stacktrace is from my patch. I added
    this to see from where the allocation is called. The second trace is
    from the page fault handler, as the allocation request now returns
    failed to prevent the second call into oom.

    tglx





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