On 10/19, Oleg Nesterov wrote: > > On 10/18, Oleg Nesterov wrote: > > > > > The semantics is that the entry report always does like > > > UTRACE_SYSCALL_ABORT to skip the actual call, and then > > > there is no exit report. > > > > Thanks! this is easy. > > Hmm. This is not what I see in upstream kernel... > > Afaics, PTRACE_SYSEMU means: > > - cancel this syscall, and do _not_ report SYSCALL_ENTRY > to the tracer
Argh, I missreaf the next check after test_thread_flag(TIF_SYSCALL_EMU) in syscall_trace_enter(), we should report SYSCALL_ENTRY and stop... > - SYSCALL_EXIT should be reported, but send_sigtrap() > should be avoied (in case it was SYSEMU_SINGLESTEP). Correct? Oleg.
