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    SubjectRe: SIGQUIT from tty layer
    On Fri, Jul 10, 2009 at 08:33:46PM +0200, Samuel Thibault wrote:
    > Not writing to the tty, but producing input for the tty. Are you
    > using evdev or the legacy kbd driver?

    evdev.

    > 0x1c is the keycode of the enter key, maybe your workload happens to
    > restart the keyboard driver, which temporarily re-enables signal keys.
    What syscall would one use to do this? Perhaps I could systemtap this.

    >
    > Or maybe it's on another tty, do you have anything beyond /dev/mem,
    > /dev/null, /dev/tty7, /dev/agpgart and /dev/dri/card* in
    > lsof -p $(pidof Xorg) | grep CHR
    > ?

    [1038 ben@ben-laptop ~] $ sudo lsof -p $(pidof X) | grep CHR
    lsof: WARNING: can't stat() fuse.gvfs-fuse-daemon file system /home/ben/.gvfs
    Output information may be incomplete.
    X 2787 root mem CHR 226,0 1191 /dev/dri/card0
    X 2787 root 5w CHR 4,7 0t0 1150 /dev/tty7
    X 2787 root 8u CHR 226,0 0t0 1191 /dev/dri/card0
    X 2787 root 10u CHR 13,66 0t0 1464 /dev/input/event2
    X 2787 root 11u CHR 13,67 0t0 1505 /dev/input/event3
    X 2787 root 12u CHR 13,65 0t0 1450 /dev/input/event1
    X 2787 root 13u CHR 13,68 0t0 1478 /dev/input/event4
    X 2787 root 14u CHR 13,69 0t0 1471 /dev/input/event5
    X 2787 root 15u CHR 13,72 0t0 4938 /dev/input/event8
    X 2787 root 16u CHR 13,71 0t0 4905 /dev/input/event7

    So other than a bunch of event devices, not too much. Thanks for your
    input,

    - Ben



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