Hello. As was agreed, clone3 should fail if the provided exit_signal value fails valid_signal() check, hence the new version.
Changees since v2: - Rewrite the check to check exit_signal against valid_signal(). Changes since v1: - Check changed to comparison against negated CSIGNAL to address the bug reported by Oleg. - Added a comment to _do_fork that exit_signal has to be checked by the caller.  https://lkml.org/lkml/2019/9/11/503  https://lkml.org/lkml/2019/9/11/518  https://lkml.org/lkml/2019/9/10/764  https://lkml.org/lkml/2019/9/10/765  https://lkml.org/lkml/2019/9/10/411  https://lkml.org/lkml/2019/9/10/467 Eugene Syromiatnikov (1): fork: check exit_signal passed in clone3() call kernel/fork.c | 11 +++++++++++ 1 file changed, 11 insertions(+) -- 2.1.4