From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jiri Slaby Subject: Re: qemu-kvm loops after kernel udpate Date: Tue, 11 Sep 2012 21:41:37 +0200 Message-ID: <504F93F1.2060005@suse.cz> References: <504F7ED8.1030702@suse.cz> <20120911190303.GA3626@amt.cnet> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: Avi Kivity , kvm@vger.kernel.org, LKML , Jiri Slaby To: Marcelo Tosatti Return-path: Received: from mail-ey0-f174.google.com ([209.85.215.174]:36409 "EHLO mail-ey0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759174Ab2IKTln (ORCPT ); Tue, 11 Sep 2012 15:41:43 -0400 In-Reply-To: <20120911190303.GA3626@amt.cnet> Sender: kvm-owner@vger.kernel.org List-ID: On 09/11/2012 09:03 PM, Marcelo Tosatti wrote: > On Tue, Sep 11, 2012 at 08:11:36PM +0200, Jiri Slaby wrote: >> Hi, >> >> it looks like an update from next-20120824 to next-20120910 makes kvm >> defunct. When I try to run qemu, it loops forever without printing >> anything on the monitor. >> >> -no-kvm makes it indeed work. >> >> Cmdline I use: >> qemu-kvm -k en-us -usbdevice tablet -balloon virtio -hda IMAGE -smp 2 -m >> 1000M -net user -net nic,model=e1000 -usb -serial pty >> >> Before I start investigating further, like biscection, is this a known >> issue already and fix available somewhere? > > Its not a known issue. 'info registers' (for both vcpus) and > 'x /20i $eip' might help track it down. I don't think it's in a state with something loaded. (qemu) cpu 0 (qemu) info registers EAX=00000000 EBX=00000000 ECX=00000000 EDX=00000623 ESI=00000000 EDI=00000000 EBP=00000000 ESP=00000000 EIP=0000fff0 EFL=00010002 [-------] CPL=3 II=0 A20=1 SMM=0 HLT=0 ES =0000 00000000 0000ffff 00009300 CS =f000 000f0000 0000ffff 0000f300 SS =0000 00000000 0000ffff 0000f300 DS =0000 00000000 0000ffff 00009300 FS =0000 00000000 0000ffff 00009300 GS =0000 00000000 0000ffff 00009300 LDT=0000 00000000 0000ffff 00008200 TR =0000 00000000 0000ffff 00008b00 GDT= 00000000 0000ffff IDT= 00000000 0000ffff CR0=60000010 CR2=00000000 CR3=00000000 CR4=00000000 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000000 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=00000000000000000000000000000000 XMM01=00000000000000000000000000000000 XMM02=00000000000000000000000000000000 XMM03=00000000000000000000000000000000 XMM04=00000000000000000000000000000000 XMM05=00000000000000000000000000000000 XMM06=00000000000000000000000000000000 XMM07=00000000000000000000000000000000 (qemu) cpu 1 (qemu) info registers EAX=00000000 EBX=00000000 ECX=00000000 EDX=00000623 ESI=00000000 EDI=00000000 EBP=00000000 ESP=00000000 EIP=0000fff0 EFL=00000002 [-------] CPL=3 II=0 A20=1 SMM=0 HLT=0 ES =0000 00000000 0000ffff 00009300 CS =f000 000f0000 0000ffff 0000f300 SS =0000 00000000 0000ffff 0000f300 DS =0000 00000000 0000ffff 00009300 FS =0000 00000000 0000ffff 00009300 GS =0000 00000000 0000ffff 00009300 LDT=0000 00000000 0000ffff 00008200 TR =0000 00000000 0000ffff 00008b00 GDT= 00000000 0000ffff IDT= 00000000 0000ffff CR0=60000010 CR2=00000000 CR3=00000000 CR4=00000000 DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000 DR6=00000000ffff0ff0 DR7=0000000000000400 EFER=0000000000000000 FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001f80 FPR0=0000000000000000 0000 FPR1=0000000000000000 0000 FPR2=0000000000000000 0000 FPR3=0000000000000000 0000 FPR4=0000000000000000 0000 FPR5=0000000000000000 0000 FPR6=0000000000000000 0000 FPR7=0000000000000000 0000 XMM00=00000000000000000000000000000000 XMM01=00000000000000000000000000000000 XMM02=00000000000000000000000000000000 XMM03=00000000000000000000000000000000 XMM04=00000000000000000000000000000000 XMM05=00000000000000000000000000000000 XMM06=00000000000000000000000000000000 XMM07=00000000000000000000000000000000 (qemu) x /20i $eip 0x000000000000fff0: add %al,(%bx,%si) 0x000000000000fff2: add %al,(%bx,%si) 0x000000000000fff4: add %al,(%bx,%si) 0x000000000000fff6: add %al,(%bx,%si) 0x000000000000fff8: add %al,(%bx,%si) 0x000000000000fffa: add %al,(%bx,%si) 0x000000000000fffc: add %al,(%bx,%si) 0x000000000000fffe: add %al,(%bx,%si) 0x0000000000010000: add %al,(%bx,%si) 0x0000000000010002: add %al,(%bx,%si) 0x0000000000010004: add %al,(%bx,%si) 0x0000000000010006: add %al,(%bx,%si) 0x0000000000010008: add %al,(%bx,%si) 0x000000000001000a: add %al,(%bx,%si) 0x000000000001000c: add %al,(%bx,%si) 0x000000000001000e: add %al,(%bx,%si) 0x0000000000010010: add %al,(%bx,%si) 0x0000000000010012: add %al,(%bx,%si) 0x0000000000010014: add %al,(%bx,%si) 0x0000000000010016: add %al,(%bx,%si) thanks, -- js suse labs