Messages in this thread | | | Subject | Re: WARNING: CPU: 0 PID: 1752 at arch/x86/kernel/traps.c:788 | From | Richard Weinberger <> | Date | Wed, 7 Jun 2017 09:36:15 +0200 |
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Andy, Paolo,
Am 07.06.2017 um 01:46 schrieb Paolo Bonzini: > > > ----- Original Message ----- >> From: "Andy Lutomirski" <luto@kernel.org> >> To: "Richard Weinberger" <richard@nod.at>, "Paolo Bonzini" <pbonzini@redhat.com> >> Cc: "Andy Lutomirski" <luto@kernel.org>, "linux-x86 64" <linux-x86_64@vger.kernel.org>, linux-kernel@vger.kernel.org, >> "Thomas Meyer" <thomas@m3y3r.de> >> 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 <richard@nod.at> 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
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