Andy, Paolo, Am 07.06.2017 um 01:46 schrieb Paolo Bonzini: > > > ----- Original Message ----- >> From: "Andy Lutomirski" <[email protected]> >> To: "Richard Weinberger" <[email protected]>, "Paolo Bonzini" >> <[email protected]> >> Cc: "Andy Lutomirski" <[email protected]>, "linux-x86 64" >> <[email protected]>, [email protected], >> "Thomas Meyer" <[email protected]> >> Sent: Wednesday, June 7, 2017 12:46:12 AM >> Subject: Re: WARNING: CPU: 0 PID: 1752 at arch/x86/kernel/traps.c:788 >> >> On Thu, Jun 1, 2017 at 3:46 PM, Richard Weinberger <[email protected]> wrote: >>> Hi! >>> >>> UserModeLinux hits the following warning on the host. >>> I've extracted the evil ptrace() command sequence, please see attached >>> program, >>> it triggers the warning too. >> >> This sounds like a known QEMU bug. Paolo, did this get fixed in QEMU? >> If so, what version? > > If I understood what bug you are referring to, 2.9.0. Commit c52ab08aee > ("target-i386: Fix eflags.TF/#DB handling of syscall/sysret insns", > 2016-12-22).
This makes sense. I'll update my qemu and test again. Thanks, //richard
