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    SubjectRe: [PATCH v2 10/12] ptrace: Only return signr from ptrace_stop if it was provided
    On 2022-04-29 16:48:35 [-0500], Eric W. Biederman wrote:
    > In ptrace_stop a ptrace_unlink or SIGKILL can occur either after
    > siglock is dropped or after tasklist_lock is dropped. At either point
    > the result can be that ptrace will continue and not stop at schedule.
    >
    > This means that there are cases where the current logic fails to handle
    > the fact that ptrace_stop did not actually stop, and can potentially
    > cause ptrace_report_syscall to attempt to deliver a signal.
    >
    > Instead of attempting to detect in ptrace_stop when it fails to
    > stop update ptrace_resume and ptrace_detach to set a flag to indicate
    ,
    > that the signal to continue with has be set. Use that
    been
    > new flag to decided how to set return signal.
    >
    > Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>

    Sebastian

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