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    SubjectRe: [PATCH] tty: Fix SIGTTOU not sent with tcflush()
    On Wed, Sep 25, 2013 at 08:13:04PM -0400, Peter Hurley wrote:
    > Commit 'e7f3880cd9b98c5bf9391ae7acdec82b75403776'
    > tty: Fix recursive deadlock in tty_perform_flush()
    > introduced a regression where tcflush() does not generate
    > SIGTTOU for background process groups.
    >
    > Make sure ioctl(TCFLSH) calls tty_check_change() when
    > invoked from the line discipline.
    >
    > Cc: stable@vger.kernel.org # v3.10+
    > Reported-by: Oleg Nesterov <oleg@redhat.com>
    > Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
    > ---
    > drivers/tty/tty_ioctl.c | 3 +++
    > 1 file changed, 3 insertions(+)

    Thanks for tracking this down, I'll queue it up tomorrow.

    greg k-h


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