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SubjectRe: OOM killer firing on 2.6.18 and later during LTP runs
On Sat, 25 Nov 2006 13:03:45 -0800
"Martin J. Bligh" <> wrote:

> On 2.6.18-rc7 and later during LTP:

The traces are a bit confusing, but I don't actually see anything wrong
there. The machine has used up all swap, has used up all memory and has
correctly gone and killed things. After that, there's free memory again.

> oom-killer: gfp_mask=0x201d2, order=0
> Call Trace:
> [<ffffffff802638cb>] out_of_memory+0x33/0x220
> [<ffffffff80265374>] __alloc_pages+0x23a/0x2c3
> [<ffffffff802667d2>] __do_page_cache_readahead+0x99/0x212
> [<ffffffff80260799>] sync_page+0x0/0x45
> [<ffffffff804b304c>] io_schedule+0x28/0x33
> [<ffffffff804b32b8>] __wait_on_bit_lock+0x5b/0x66
> [<ffffffff8043d849>] dm_any_congested+0x3b/0x42
> [<ffffffff80262e50>] filemap_nopage+0x14b/0x353
> [<ffffffff8026cf9a>] __handle_mm_fault+0x387/0x93f
> [<ffffffff804b6366>] do_page_fault+0x44b/0x7ba
> [<ffffffff80245a4e>] autoremove_wake_function+0x0/0x2e
> oom-killer: gfp_mask=0x280d2, order=0
> Call Trace:
> [<ffffffff802638cb>] out_of_memory+0x33/0x220
> [<ffffffff80265374>] __alloc_pages+0x23a/0x2c3
> [<ffffffff8026cde3>] __handle_mm_fault+0x1d0/0x93f
> [<ffffffff804b6366>] do_page_fault+0x44b/0x7ba
> [<ffffffff804b2854>] thread_return+0x0/0xe0
> [<ffffffff8020a405>] error_exit+0x0/0x84
> --------------------------------------------------
> This doesn't seem to happen every run, unfortnately, only
> intermittently, and we don't have much data before that, so
> hard to tell how long it's been going on.
> Still happening on latest kernels.

The same appears to have happened there too. Although it does seem to have
killed a lot more than it should have.

Has something changed in the configuration of that machine? New LTP
version? Less swapsapce?

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