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    Subject[PATCHSET] ptrace,signal: Improve ptrace and job control interaction
    Date
    Hello,

    This is repost of the following two pending patchsets.

    [1] group stop / ptrace updates, take#2
    [2] ptrace,signal: Fix notifications to the real parent while ptraced

    Combined these patches implement "P1. Always TASK_TRACED while
    ptraced", "P2. Fix notifications to the real parent" and "P3. Keep
    ptrace resume separate from and beneath jctl stop" of the ptrace job
    control improvements proposal[3].

    All patches have been reviewed and acked by Oleg and this will be the
    last repost of these patches. They're being committed to a stable git
    tree (will eventually be managed by Oleg) and will be pulled into
    linux-next once -rc1 is released.

    0001-signal-Fix-SIGCONT-notification-code.patch
    0002-ptrace-Remove-the-extra-wake_up_state-from-ptrace_de.patch
    0003-signal-Remove-superflous-try_to_freeze-loop-in-do_si.patch
    0004-ptrace-Kill-tracehook_notify_jctl.patch
    0005-ptrace-Add-why-to-ptrace_stop.patch
    0006-signal-Fix-premature-completion-of-group-stop-when-i.patch
    0007-signal-Use-GROUP_STOP_PENDING-to-stop-once-for-a-sin.patch
    0008-ptrace-Participate-in-group-stop-from-ptrace_stop-if.patch
    0009-ptrace-Make-do_signal_stop-use-ptrace_stop-if-the-ta.patch
    0010-ptrace-Clean-transitions-between-TASK_STOPPED-and-TR.patch
    0011-ptrace-Collapse-ptrace_untrace-into-__ptrace_unlink.patch
    0012-ptrace-Always-put-ptracee-into-appropriate-execution.patch
    0013-job-control-Don-t-set-group_stop-exit_code-if-re-ent.patch
    0014-job-control-Small-reorganization-of-wait_consider_ta.patch
    0015-job-control-Fix-ptracer-wait-2-hang-and-explain-nota.patch
    0016-job-control-Allow-access-to-job-control-events-throu.patch
    0017-job-control-Add-for_ptrace-to-do_notify_parent_cldst.patch
    0018-job-control-Job-control-stop-notifications-should-al.patch
    0019-job-control-Notify-the-real-parent-of-job-control-ev.patch
    0020-job-control-Don-t-send-duplicate-job-control-stop-no.patch

    0001-0010 are from the first patchset and unchanged. 0010-0020 are
    from the second patchset. 0010 and 0011 are the additional ones
    posted as 0.1 and 0.2. 0015, 0016 and 0019 are the updated version
    per Oleg's reviews. The rest remain unchanged.

    The patches are on top of the current mainline (6447f55da) and is
    available in the following git branch

    git://git.kernel.org/pub/scm/linux/kernel/git/tj/misc.git ptrace

    and contains the following changes.

    fs/exec.c | 1
    include/linux/sched.h | 11 +
    include/linux/tracehook.h | 27 ---
    kernel/exit.c | 84 +++++++++--
    kernel/ptrace.c | 110 ++++++++++----
    kernel/signal.c | 341 +++++++++++++++++++++++++++++++++++++---------
    6 files changed, 434 insertions(+), 140 deletions(-)

    Thanks.

    --
    tejun

    [1] http://thread.gmane.org/gmane.linux.kernel/1109224
    [2] http://thread.gmane.org/gmane.linux.kernel/1110403
    [3] http://thread.gmane.org/gmane.linux.kernel/1107045


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