Re: [Qemu-devel] [PULL 00/47] ppc-for-2.10 queue 20170424

[David Gibson <david@gibson.dropbear.id.au>]

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On Mon, Apr 24, 2017 at 02:12:19PM +0100, Peter Maydell wrote:
> On 24 April 2017 at 02:58, David Gibson <david@gibson.dropbear.id.au> wrote:
> > The following changes since commit 32c7e0ab755745e961f1772e95cac381cc68769d:
> >
> >   Merge remote-tracking branch 'remotes/juanquintela/tags/migration/20170421' into staging (2017-04-21 15:59:27 +0100)
> >
> > are available in the git repository at:
> >
> >   git://github.com/dgibson/qemu.git tags/ppc-for-2.10-20170424
> >
> > for you to fetch changes up to 4cab48942a1c5353f0a314fab1aa85a5f0a61461:
> >
> >   target/ppc: Style fixes (2017-04-24 08:56:19 +1000)
> >
> > ----------------------------------------------------------------
> > ppc patch queue 2017-04-24
> >
> > Here's my first pull request for qemu-2.10, consisting of assorted
> > patches which have accumulated while qemu-2.9 stabilized.  Highlights
> > are:
> >     * Rework / cleanup of the XICS interrupt controller
> >     * Substantial improvement to the 'powernv' machine type
> >         - Includes an MMIO XICS version
> >     * POWER9 support improvements
> >         - POWER9 guests with KVM
> >         - Partial support for POWER9 guests with TCG
> >     * IOMMU and VFIO improvements
> >     * Assorted minor changes
> >
> > There are several IPMI patches here that aren't usually in my area of
> > maintenance, but there isn't a regular maintainer and these patches
> > are for the benefit of the powernv machine type.
> 
> 
> Hi -- I'm afraid this pullreq generates a new clang sanitizer warning
> running 'make check':

Drat.  What do I need to do to see these warnings?  Sounds like I
should add that to my pre-pull-request testing sequence.  Just
building with clang (on Fedora 25) and running make check doesn't seem
to be sufficient.

> /home/petmay01/linaro/qemu-for-merges/hw/core/loader.c:67:15: runtime
> error: null pointer passed as argument 1, which is declared to never
> be null
> 
> It looks like we try to call open(NULL, ...).
> 
> Affected tests are in check-qtest-i386:
> tests/bios-tables-test
>   /i386/acpi/piix4/ipmi
>   /i386/acpi/q35/ipmi
> tests/ipmi-kcs-test
> 
> Here's a backtrace:
> 
> #0  0x00005555567e6197 in get_image_size (filename=0x0) at
> /home/petmay01/linaro/qemu-for-merges/hw/core/loader.c:67
> #1  0x00005555568ead3c in ipmi_fru_init (fru=0x55555ab98588)
>     at /home/petmay01/linaro/qemu-for-merges/hw/ipmi/ipmi_bmc_sim.c:1902
> #2  0x00005555568e91ac in ipmi_sim_realize (dev=<optimised out>,
> errp=<optimised out>)
>     at /home/petmay01/linaro/qemu-for-merges/hw/ipmi/ipmi_bmc_sim.c:1943
> #3  0x00005555567d6df6 in device_set_realized (obj=<optimised out>,
> value=<optimised out>, errp=<optimised out>)
>     at /home/petmay01/linaro/qemu-for-merges/hw/core/qdev.c:905
> #4  0x0000555556d7b1f8 in property_set_bool (obj=0x55555ab93c90,
> v=<optimised out>, name=<optimised out>, opaque=<optimised out>,
> errp=0x7fffffffde90) at
> /home/petmay01/linaro/qemu-for-merges/qom/object.c:1860
> #5  0x0000555556d7dd1d in object_property_set_qobject (obj=0x0,
> value=<optimised out>, name=0x58fdf801 <error: Cannot access memory at
> address 0x58fdf801>, errp=0x1) at
> /home/petmay01/linaro/qemu-for-merges/qom/qom-qobject.c:27
> #6  0x0000555556d78cb2 in object_property_set_bool
> (obj=0x55555ab93c90, value=<optimised out>, name=0x55555710e087
> "realized", errp=0x7fffffffde90) at
> /home/petmay01/linaro/qemu-for-merges/qom/object.c:1163
> #7  0x000055555661d80d in qdev_device_add (opts=<optimised out>,
> errp=<optimised out>)
>     at /home/petmay01/linaro/qemu-for-merges/qdev-monitor.c:630
> #8  0x00005555566374cb in device_init_func (opaque=<optimised out>,
> opts=0x0, errp=0x58fdf801)
>     at /home/petmay01/linaro/qemu-for-merges/vl.c:2305
> #9  0x000055555701dc81 in qemu_opts_foreach (list=<optimised out>,
> func=<optimised out>, opaque=<optimised out>, errp=<optimised out>) at
> /home/petmay01/linaro/qemu-for-merges/util/qemu-option.c:1114
> #10 0x0000555556633289 in main (argc=<optimised out>, argv=<optimised
> out>, envp=<optimised out>)
>     at /home/petmay01/linaro/qemu-for-merges/vl.c:4583
> 
> It looks like the device doesn't handle not having its fru.filename
> property set -- this should either cause an error in realize or the
> rest of the device code should handle NULL.
> 
> thanks
> -- PMM
> 

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson

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