Re: Stopped detach/attach status

2009-10-04 Thread Oleg Nesterov
(add Roland) On 10/01, Jan Kratochvil wrote: the ptrace-testsuite http://sourceware.org/systemtap/wiki/utrace/tests currently FAILs (also) on Fedora 12 kernel-2.6.31.1-48.fc12.x86_64 for: FAIL: detach-stopped FAIL: stopped-attach-transparency Do you agree with the

utrace-ptrace detach with signal semantics

2009-10-04 Thread Oleg Nesterov
Jan, Roland, I have the question. Currently, if a tracer does ptrace(DETACH, tracee, SIGXXX) and then another/same tracer does ptrace(ATTACH, tracee) then SIGXXX will not be reported to the new tracer. Why? Should utrace-ptrace be 100% compatible here? It is not trivial to implement, and I