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Re: [Qemu-devel] [Bug 948675] [NEW] QEMU is crashing when called with "-


From: Fabiano Fidêncio
Subject: Re: [Qemu-devel] [Bug 948675] [NEW] QEMU is crashing when called with "-vga none"
Date: Wed, 14 Mar 2012 17:25:27 -0300

Anthony,

See http://thread.gmane.org/gmane.comp.emulators.qemu/139580

This patch (from Avi) fix the problem, at least, in my case.

On Wed, Mar 14, 2012 at 4:59 PM, Anthony Liguori <address@hidden> wrote:
> On 03/06/2012 10:22 PM, fidencio wrote:
>>
>> Public bug reported:
>>
>> QEMU is crashing when called with "-vga none". This regression was
>> inserted in e5ad936b0fd7dfd7fd7908be6f9f1ca88f63b96b.
>>
>> QEMU line:
>> /home/fidencio/dev/bin/qemu-system-x86_64 -enable-kvm -m 1024 -kernel
>> /home/fidencio/src/linux-2.6/arch/x86_64/boot/bzImage -append "root=nfs rw
>> nfsrootdebug console=ttyS0
>> ip=192.168.122.2:192.168.122.1:192.168.122.1:255.255.255.0
>> nfsroot=192.168.122.1:/home/fidencio/fedora14-minimal" -device e1000,vlan=0
>> -serial stdio -net tap,script=/home/fidencio/dev/etc/qemu-ifup -vga none
>
>
> I can confirm this was introduced in:
>
> commit e5ad936b0fd7dfd7fd7908be6f9f1ca88f63b96b
> Author: Jan Kiszka <address@hidden>
> Date:   Fri Feb 17 18:31:19 2012 +0100
>
>    kvmvapic: Introduce TPR access optimization for Windows guests
>
> For me, this results in a SEGV until:
>
> commit bf75fec175d00885c7ae06e5917bde86110c386a
> Merge: 9f1d43b 7e68075
> Author: Anthony Liguori <address@hidden>
> Date:   Fri Mar 9 12:29:55 2012 -0600
>
>    Merge remote-tracking branch 'qemu-kvm/uq/master' into staging
>
>    * qemu-kvm/uq/master:
>      kvm: fill in padding to help valgrind
>      kvm: x86: Add user space part for in-kernel i8254
>      kvm: Add kvm_has_pit_state2 helper
>      i8254: Open-code timer restore
>      i8254: Factor out base class for KVM reuse
>
> Which then turns it into:
>
> /home/anthony/build/qemu/x86_64-softmmu/qemu-system-x86_64 -kernel
> bin/vmlinuz-3.0 -initrd .tmp-20604/initramfs-20604.img.gz -append
> console=ttyS0 seed=8631 -drive
> file=.tmp-20604/disk-20604.img,if=none,snapshot=on,id=hd0 -device
> virtio-balloon-pci,addr=03.0 -device virtio-blk-pci,addr=04.0,drive=hd0
> -nographic -nodefconfig -m 1G -no-reboot -no-hpet -device virtio-serial
> -chardev socket,path=.tmp-20604/channel-20604.sock,id=channel0,server,nowait
> -device virtserialport,chardev=channel0,name=org.libguestfs.channel.0
> -nodefaults -serial stdio -enable-kvm -pidfile .tmp-20604/pidfile-20604.pid
> -qmp unix:.tmp-20604/qmpsock-20604.sock,server,nowait
> KVM internal error. Suberror: 1
> emulation failure
> EAX=0000aa55 EBX=00000000 ECX=00000000 EDX=00000000
> ESI=00000000 EDI=00000000 EBP=00000000 ESP=00006f78
> EIP=0000003c EFL=00010202 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0
> ES =0000 00000000 0000ffff 00009300
> CS =c300 000c3000 0000ffff 00009b00
> SS =0000 00000000 0000ffff 00009300
> 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=     000fcd78 00000037
> IDT=     00000000 000003ff
> CR0=00000010 CR2=00000000 CR3=00000000 CR4=00000000
> DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000
> DR3=0000000000000000
> DR6=00000000ffff0ff0 DR7=0000000000000400
> EFER=0000000000000000
> Code=00 00 7c 02 81 02 00 00 00 00 00 00 00 00 3c 00 00 00 00 00 <8c> c8 8e
> d8 fa fc e9 91 00 b8 16 00 ba 10 05 ef ba 11 05 ec 66 c1 e0 08 ec 66 c1 e0
> 08 ec
>
> A simple test case to reproduce:
>
> x86_64-softmmu/qemu-system-x86_64 -nographic -nodefconfig -enable-kvm
> -nodefaults -kernel /boot/vmlinuz-2.6.32-29-generic
>
> I've tried multiple guest kernel versions and they all reproduce (not
> surprising since EIP is still in SeaBIOS here).
>
> This also happens with the very latest SeaBIOS release.
>
> Regards,
>
> Anthony Liguori
>
>
>>
>> Backtrace:
>> #0  0x00005555557ac976 in is_romd (pd=2048)
>>     at /home/fidencio/src/qemu/exec.c:2110
>> #1  0x00005555557ac9e3 in is_ram_rom_romd (pd=804864)
>>     at /home/fidencio/src/qemu/exec.c:2115
>> #2  0x00005555557ad05a in cpu_register_physical_memory_log (section=
>>     0x7ffff2daf6f0, readable=true, readonly=false)
>>     at /home/fidencio/src/qemu/exec.c:2587
>> #3  0x00005555557e4d47 in as_memory_range_add (as=0x555555c34980, fr=
>>     0x7fffec002950) at /home/fidencio/src/qemu/memory.c:317
>> #4  0x00005555557e6b49 in address_space_update_topology_pass (as=
>>     0x555555c34980, old_view=..., new_view=..., adding=true)
>>     at /home/fidencio/src/qemu/memory.c:763
>> #5  0x00005555557e6c3f in address_space_update_topology
>> (as=0x555555c34980)
>>     at /home/fidencio/src/qemu/memory.c:779
>> #6  0x00005555557e6d0c in memory_region_update_topology
>> (mr=0x55555646d2c0)
>>     at /home/fidencio/src/qemu/memory.c:798
>> #7  0x00005555557e8e16 in memory_region_add_subregion_common (mr=
>>     0x55555646d2c0, offset=792576, subregion=0x5555564a6130)
>>     at /home/fidencio/src/qemu/memory.c:1352
>> #8  0x00005555557e8ede in memory_region_add_subregion_overlap (mr=
>>     0x55555646d2c0, offset=792576, subregion=0x5555564a6130,
>> priority=1000)
>>     at /home/fidencio/src/qemu/memory.c:1372
>> #9  0x00005555557dfebe in vapic_map_rom_writable (s=0x5555564a3d30)
>>     at /home/fidencio/src/qemu/hw/kvmvapic.c:587
>> #10 0x00005555557dff06 in vapic_prepare (s=0x5555564a3d30)
>>     at /home/fidencio/src/qemu/hw/kvmvapic.c:593
>> #11 0x00005555557e0001 in vapic_write (opaque=0x5555564a3d30, addr=0,
>> data=32,
>>     size=2) at /home/fidencio/src/qemu/hw/kvmvapic.c:632
>> #12 0x00005555557e4b84 in memory_region_write_accessor
>> (opaque=0x5555564a6068,
>>     addr=0, value=0x7ffff2dafb00, size=2, shift=0, mask=65535)
>>     at /home/fidencio/src/qemu/memory.c:274
>> #13 0x00005555557e4c66 in access_with_adjusted_size (addr=0, value=
>>     0x7ffff2dafb00, size=2, access_size_min=1, access_size_max=4, access=
>>     0x5555557e4b0c<memory_region_write_accessor>, opaque=0x5555564a6068)
>>     at /home/fidencio/src/qemu/memory.c:304
>> #14 0x00005555557e5412 in memory_region_iorange_write
>> (iorange=0x5555564a60b0,
>>     offset=0, width=2, data=32) at /home/fidencio/src/qemu/memory.c:440
>> #15 0x00005555557d0ab6 in ioport_writew_thunk (opaque=0x5555564a60b0,
>> addr=
>>     126, data=32) at /home/fidencio/src/qemu/ioport.c:218
>> #16 0x00005555557d0411 in ioport_write (index=1, address=126, data=32)
>>     at /home/fidencio/src/qemu/ioport.c:82
>> #17 0x00005555557d0f3d in cpu_outw (addr=126, val=32)
>>     at /home/fidencio/src/qemu/ioport.c:281
>> #18 0x00005555557d537c in kvm_handle_io (port=126, data=0x7ffff7ff4000,
>>     direction=1, size=2, count=1) at
>> /home/fidencio/src/qemu/kvm-all.c:1015
>> #19 0x00005555557d594a in kvm_cpu_exec (env=0x555556492f20)
>>     at /home/fidencio/src/qemu/kvm-all.c:1160
>> #20 0x00005555557a5d69 in qemu_kvm_cpu_thread_fn (arg=0x555556492f20)
>>     at /home/fidencio/src/qemu/cpus.c:733
>> #21 0x00007ffff651dd90 in start_thread (arg=0x7ffff2db0700)
>>     at pthread_create.c:309
>> #22 0x00007ffff578148d in clone ()
>>     at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115
>>
>> ** Affects: qemu
>>      Importance: Undecided
>>          Status: New
>>
>> ** Description changed:
>>
>>   QEMU is crashing when called with "-vga none". This regression was
>>   inserted in e5ad936b0fd7dfd7fd7908be6f9f1ca88f63b96b.
>>
>>   QEMU line:
>>   /home/fidencio/dev/bin/qemu-system-x86_64 -enable-kvm -m 1024 -kernel
>> /home/fidencio/src/linux-2.6/arch/x86_64/boot/bzImage -append "root=nfs rw
>> nfsrootdebug console=ttyS0
>> ip=192.168.122.2:192.168.122.1:192.168.122.1:255.255.255.0
>> nfsroot=192.168.122.1:/home/fidencio/fedora14-minimal" -device e1000,vlan=0
>> -serial stdio -net tap,script=/home/fidencio/dev/etc/qemu-ifup -vga none
>>
>>   Backtrace:
>>   #0  0x00005555557ac976 in is_romd (pd=2048)
>> -     at /home/fidencio/src/qemu/exec.c:2110
>> +     at /home/fidencio/src/qemu/exec.c:2110
>>   #1  0x00005555557ac9e3 in is_ram_rom_romd (pd=804864)
>> -     at /home/fidencio/src/qemu/exec.c:2115
>> +     at /home/fidencio/src/qemu/exec.c:2115
>>   #2  0x00005555557ad05a in cpu_register_physical_memory_log (section=
>> -     0x7ffff2daf6f0, readable=true, readonly=false)
>> -     at /home/fidencio/src/qemu/exec.c:2587
>> +     0x7ffff2daf6f0, readable=true, readonly=false)
>> +     at /home/fidencio/src/qemu/exec.c:2587
>>   #3  0x00005555557e4d47 in as_memory_range_add (as=0x555555c34980, fr=
>> -     0x7fffec002950) at /home/fidencio/src/qemu/memory.c:317
>> +     0x7fffec002950) at /home/fidencio/src/qemu/memory.c:317
>>   #4  0x00005555557e6b49 in address_space_update_topology_pass (as=
>> -     0x555555c34980, old_view=..., new_view=..., adding=true)
>> -     at /home/fidencio/src/qemu/memory.c:763
>> +     0x555555c34980, old_view=..., new_view=..., adding=true)
>> +     at /home/fidencio/src/qemu/memory.c:763
>>   #5  0x00005555557e6c3f in address_space_update_topology
>> (as=0x555555c34980)
>> -     at /home/fidencio/src/qemu/memory.c:779
>> +     at /home/fidencio/src/qemu/memory.c:779
>>   #6  0x00005555557e6d0c in memory_region_update_topology
>> (mr=0x55555646d2c0)
>> -     at /home/fidencio/src/qemu/memory.c:798
>> +     at /home/fidencio/src/qemu/memory.c:798
>>   #7  0x00005555557e8e16 in memory_region_add_subregion_common (mr=
>> -     0x55555646d2c0, offset=792576, subregion=0x5555564a6130)
>> -     at /home/fidencio/src/qemu/memory.c:1352
>> +     0x55555646d2c0, offset=792576, subregion=0x5555564a6130)
>> +     at /home/fidencio/src/qemu/memory.c:1352
>>   #8  0x00005555557e8ede in memory_region_add_subregion_overlap (mr=
>> -     0x55555646d2c0, offset=792576, subregion=0x5555564a6130,
>> priority=1000)
>> -     at /home/fidencio/src/qemu/memory.c:1372
>> +     0x55555646d2c0, offset=792576, subregion=0x5555564a6130,
>> priority=1000)
>> +     at /home/fidencio/src/qemu/memory.c:1372
>>   #9  0x00005555557dfebe in vapic_map_rom_writable (s=0x5555564a3d30)
>> -     at /home/fidencio/src/qemu/hw/kvmvapic.c:587
>> +     at /home/fidencio/src/qemu/hw/kvmvapic.c:587
>>   #10 0x00005555557dff06 in vapic_prepare (s=0x5555564a3d30)
>> -     at /home/fidencio/src/qemu/hw/kvmvapic.c:593
>> - #11 0x00005555557e0001 in vapic_write (opaque=0x5555564a3d30, addr=0,
>> data=32,
>> -     size=2) at /home/fidencio/src/qemu/hw/kvmvapic.c:632
>> - #12 0x00005555557e4b84 in memory_region_write_accessor
>> (opaque=0x5555564a6068,
>> -     addr=0, value=0x7ffff2dafb00, size=2, shift=0, mask=65535)
>> -     at /home/fidencio/src/qemu/memory.c:274
>> +     at /home/fidencio/src/qemu/hw/kvmvapic.c:593
>> + #11 0x00005555557e0001 in vapic_write (opaque=0x5555564a3d30, addr=0,
>> data=32,
>> +     size=2) at /home/fidencio/src/qemu/hw/kvmvapic.c:632
>> + #12 0x00005555557e4b84 in memory_region_write_accessor
>> (opaque=0x5555564a6068,
>> +     addr=0, value=0x7ffff2dafb00, size=2, shift=0, mask=65535)
>> +     at /home/fidencio/src/qemu/memory.c:274
>>   #13 0x00005555557e4c66 in access_with_adjusted_size (addr=0, value=
>> -     0x7ffff2dafb00, size=2, access_size_min=1, access_size_max=4,
>> access=
>> -     0x5555557e4b0c<memory_region_write_accessor>, opaque=0x5555564a6068)
>> -     at /home/fidencio/src/qemu/memory.c:304
>> - #14 0x00005555557e5412 in memory_region_iorange_write
>> (iorange=0x5555564a60b0,
>> -     offset=0, width=2, data=32) at /home/fidencio/src/qemu/memory.c:440
>> +     0x7ffff2dafb00, size=2, access_size_min=1, access_size_max=4,
>> access=
>> +     0x5555557e4b0c<memory_region_write_accessor>, opaque=0x5555564a6068)
>> +     at /home/fidencio/src/qemu/memory.c:304
>> + #14 0x00005555557e5412 in memory_region_iorange_write
>> (iorange=0x5555564a60b0,
>> +     offset=0, width=2, data=32) at /home/fidencio/src/qemu/memory.c:440
>>   #15 0x00005555557d0ab6 in ioport_writew_thunk (opaque=0x5555564a60b0,
>> addr=
>> -     126, data=32) at /home/fidencio/src/qemu/ioport.c:218
>> +     126, data=32) at /home/fidencio/src/qemu/ioport.c:218
>>   #16 0x00005555557d0411 in ioport_write (index=1, address=126, data=32)
>> -     at /home/fidencio/src/qemu/ioport.c:82
>> +     at /home/fidencio/src/qemu/ioport.c:82
>>   #17 0x00005555557d0f3d in cpu_outw (addr=126, val=32)
>> -     at /home/fidencio/src/qemu/ioport.c:281
>> - #18 0x00005555557d537c in kvm_handle_io (port=126, data=0x7ffff7ff4000,
>> -     direction=1, size=2, count=1) at
>> /home/fidencio/src/qemu/kvm-all.c:1015
>> +     at /home/fidencio/src/qemu/ioport.c:281
>> + #18 0x00005555557d537c in kvm_handle_io (port=126, data=0x7ffff7ff4000,
>> +     direction=1, size=2, count=1) at
>> /home/fidencio/src/qemu/kvm-all.c:1015
>>   #19 0x00005555557d594a in kvm_cpu_exec (env=0x555556492f20)
>> +     at /home/fidencio/src/qemu/kvm-all.c:1160
>> + #20 0x00005555557a5d69 in qemu_kvm_cpu_thread_fn (arg=0x555556492f20)
>> +     at /home/fidencio/src/qemu/cpus.c:733
>> + #21 0x00007ffff651dd90 in start_thread (arg=0x7ffff2db0700)
>> +     at pthread_create.c:309
>> + #22 0x00007ffff578148d in clone ()
>> +     at ../sysdeps/unix/sysv/linux/x86_64/clone.S:115
>>
>


Best Regards,
-- 
Fabiano Fidêncio



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