Re: s390 && user_enable_single_step() (Was: odd utrace testing results on s390x)

Roland McGrath
2010-01-07T21:46:56Z

> Clear the TIF_SINGLE_STEP bit in copy_thread. If the new process is
> not auto-attached by the tracer it is wrong to delivere SIGTRAP to
> the new process.

The change is right, but this log entry is confusing. "auto-attached" has
nothing to do with it, nor does anything about tracing the new process or
not. The new process has not experienced a PER trap of its own, so it is
wrong to deliver a SIGTRAP that is meant for its creator.

Thanks,
Roland