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    SubjectRe: kernel error : 'find /proc/ -type f | xargs -n 1 head -c 10 >/dev/null'

    [ adding relevant CCs ]

    On Thu, 21 Jan 2010, Toralf Förster wrote:

    > Alexey Dobriyan wrote at 21:35:35
    > > On Thu, Jan 21, 2010 at 08:16:59PM +0100, Toralf Förster wrote:
    > > > I was inspired by http://article.gmane.org/gmane.linux.kernel/941115 .
    > > >
    > > > Running the command (se subject) as a normal user at a 2.6.32.4 kernel
    > > > gives this in /var/log/messages:
    > > >
    > > > head: page allocation failure. order:9, mode:0xd0
    > > > Pid: 2324, comm: head Not tainted 2.6.32.4 #1
    > > > Call Trace:
    > > > [<c106e2cc>] ? __alloc_pages_nodemask+0x4bc/0x5a0
    > > > [<c108cf5a>] ? cache_alloc_refill+0x2ba/0x510
    > > > [<c108d299>] ? __kmalloc+0xe9/0xf0
    > > > [<c10aa755>] ? seq_read+0x195/0x370
    > >
    > > Please, find out which file is causing this, if it's reproducible.
    > >
    > I reproduced the msg :
    > "ACPI: Please implement acpi_video_bus_ROM_seq_show" by :
    > by
    > $> head -c 10 /proc/acpi/video/VID/info
    >
    > After suspend to disk and wakeup however the file /proc/acpi/video/VID/ROM was
    > the culprit.
    >
    > The trace however I can't reproduce until now.
    >
    >
    >

    --
    Jiri Kosina
    SUSE Labs, Novell Inc.

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