There is a variable tsk->signal->group_exit_task that is only truly used in de_thread. These changes modify the coredump code and the signal_group_exit() function to stop using group_exit_task, and rename the group_exit_task variable to group_exec_task. In addition as I think Linus was asking an additional signal flag is added called SIGNAL_GROUP_DETHREAD, and that flag is used in the function signal_group_exit() so that only signal->flags needs to be tested. Eric W. Biederman (6): signal: Pretty up the SIGNAL_GROUP_FLAGS exec: Lock more defensively in exec signal: Implement SIGNAL_GROUP_DETHREAD signal: In signal_group_exit remove the group_exit_task test coredump: Stop using group_exit_task exec: Rename group_exit_task group_exec_task and correct the Documentation fs/coredump.c | 2 -- fs/exec.c | 22 ++++++++++++++++------ include/linux/sched/signal.h | 33 +++++++++++++++++---------------- kernel/exit.c | 4 ++-- 4 files changed, 35 insertions(+), 26 deletions(-)