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Subject: Re: [Qemu-devel] qemu-pcc 2.8.0 linux-user segfaults
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To: Sam Bobroff <sam.bobroff@au1.ibm.com>
Cc: qemu-ppc@nongnu.org, qemu-devel@nongnu.org

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On 01/30/2017 05:52 PM, Sam Bobroff wrote:
> On Mon, Jan 16, 2017 at 04:03:21PM -0600, An=EDbal Lim=F3n wrote:
>>
>>
>> On 01/16/2017 03:56 PM, An=EDbal Lim=F3n wrote:
>>> Hi folks,
>>>
>>> I'm trying to upgrade qemu to 2.8.0 in Openembedded-core and segfault=
s
>>> in qemu-ppc when is executing:
>=20
> Hi An=EDbal,
>=20
> I've recently encountered a similar problem and I've posted a fix. If
> you'd like to try it, it's here:
>=20
> https://lists.gnu.org/archive/html/qemu-ppc/2017-01/msg00413.html

The patch works, thanks for made it.

Cheers,
	alimon

>=20
> Cheers,
> Sam.
>=20
>>> /home/alimon/repos/poky/build-ppc/tmp/work/x86_64-linux/qemu-native/2=
=2E8.0-r0/build/ppc-linux-user/qemu-ppc
>>> -s 16M -r 3.2.0 -cpu 7400 -L
>>> /home/alimon/repos/poky/build-ppc/tmp/sysroots/qemuppc -E
>>> LD_LIBRARY_PATH=3D/home/alimon/repos/poky/build-ppc/tmp/work/ppc7400-=
poky-linux/gobject-introspection/1.50.0-r0/build/.libs:.libs:/home/alimon=
/repos/poky/build-ppc/tmp/sysroots/qemuppc//usr/lib:/home/alimon/repos/po=
ky/build-ppc/tmp/sysroots/qemuppc//lib
>>> /home/alimon/repos/poky/build-ppc/tmp/work/ppc7400-poky-linux/gobject=
-introspection/1.50.0-r0/build/tmp-introspectu_ewt_1z/Gio-2.0
>>> --introspect-dump=3D/home/alimon/repos/poky/build-ppc/tmp/work/ppc740=
0-poky-linux/gobject-introspection/1.50.0-r0/build/tmp-introspectu_ewt_1z=
/functions.txt,/home/alimon/repos/poky/build-ppc/tmp/work/ppc7400-poky-li=
nux/gobject-introspection/1.50.0-r0/build/tmp-introspectu_ewt_1z/dump.xml=

>>> [Thread debugging using libthread_db enabled]
>>>
>>>
>>> And the debug info,
>>>
>>> (gdb) info threads
>>>   Id   Target Id         Frame
>>>   1    Thread 0x7ffff7fd0780 (LWP 25457) "qemu-ppc"
>>> pthread_cond_wait@@GLIBC_2.3.2 () at
>>> ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
>>>   2    Thread 0x7ffff647e700 (LWP 25461) "qemu-ppc" syscall () at
>>> ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
>>> * 3    Thread 0x7ffff7f4d700 (LWP 25462) "qemu-ppc" 0x000000000086fba=
4
>>> in static_code_gen_buffer ()
>>>
>>> (gdb) bt
>>> #0  0x000000000086fba4 in static_code_gen_buffer ()
>>> #1  0x000000000040e922 in cpu_tb_exec (itb=3D<optimized out>,
>>> itb=3D<optimized out>, cpu=3D0x29864d0) at
>>> /home/alimon/repos/poky/build-ppc/tmp/work/x86_64-linux/qemu-native/2=
=2E8.0-r0/qemu-2.8.0/cpu-exec.c:164
>>> #2  cpu_loop_exec_tb (sc=3D<optimized out>, tb_exit=3D<synthetic poin=
ter>,
>>> last_tb=3D<synthetic pointer>, tb=3D<optimized out>, cpu=3D0x29864d0)=
 at
>>> /home/alimon/repos/poky/build-ppc/tmp/work/x86_64-linux/qemu-native/2=
=2E8.0-r0/qemu-2.8.0/cpu-exec.c:544
>>> #3  cpu_exec (cpu=3Dcpu@entry=3D0x29864d0) at
>>> /home/alimon/repos/poky/build-ppc/tmp/work/x86_64-linux/qemu-native/2=
=2E8.0-r0/qemu-2.8.0/cpu-exec.c:638
>>> #4  0x0000000000445fba in cpu_loop (env=3Denv@entry=3D0x298e750) at
>>> /home/alimon/repos/poky/build-ppc/tmp/work/x86_64-linux/qemu-native/2=
=2E8.0-r0/qemu-2.8.0/linux-user/main.c:1359
>>> #5  0x0000000000448a95 in clone_func (arg=3D0x7fffffffa910) at
>>> /home/alimon/repos/poky/build-ppc/tmp/work/x86_64-linux/qemu-native/2=
=2E8.0-r0/qemu-2.8.0/linux-user/syscall.c:6090
>>> #6  0x00007ffff6a750a4 in start_thread (arg=3D0x7ffff7f4d700) at
>>> pthread_create.c:309
>>> #7  0x00007ffff67aa62d in clone () at
>>> ../sysdeps/unix/sysv/linux/x86_64/clone.S:111
>>
>> Here is the core dump,
>>
>> https://drive.google.com/file/d/0B9uDfO-FJ1kgY3ZhendISTZzOUU/view?usp=3D=
sharing
>>
>>>
>>> Any help will be appreciated.
>>>
>>> Best regards,
>>> 	alimon
>>>
>>
>=20
>=20
>=20


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