On 09/06, Oleg Nesterov wrote: > > On 09/04, Oleg Nesterov wrote: > > > > - implement continue with signal. > > There is something wrong. I tried to debug the ptraced task via ugdb, > and the result is not good. I am not surprised ugdb confuses ptrace, > but I didn't expect that ptrace can break ugdb. > > I am still trying to understand what is wrong, it should be something > simple but somehow I can't explain the problem so far...
OK, I am stupid. Indeed, say, "return UTRACE_STOP | UTRACE_SIGNAL_IGN" from under "case UTRACE_SIGNAL_REPORT" changes utrace_report->result, and confuses other tracers. Probably we can ignore ptrace, but this also means ugdb conflicts with itself and should be fixed. Oleg.
