<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [KVM][GVT-d] [BDW & SKL ]Ubuntu 16.04 guest boot up with kernel panic with the newest 4.9.0+ drm-intel kernel" href="https://bugs.freedesktop.org/show_bug.cgi?id=99025#c17">Comment # 17</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [KVM][GVT-d] [BDW & SKL ]Ubuntu 16.04 guest boot up with kernel panic with the newest 4.9.0+ drm-intel kernel" href="https://bugs.freedesktop.org/show_bug.cgi?id=99025">bug 99025</a> from <a class="email" href="mailto:terrence.xu@intel.com" title="Terrence Xu <terrence.xu@intel.com>"> Terrence Xu</a> <pre>(In reply to Tomeu Vizoso from <a href="show_bug.cgi?id=99025#c15">comment #15</a>) > (In reply to Terrence Xu from <a href="show_bug.cgi?id=99025#c14">comment #14</a>) > > Created <a href="attachment.cgi?id=129481" name="attach_129481" title="dmesg-guest-slubdebug-20170203-drm-tip: 2017y-02m-02d-19h-49m-15s">attachment 129481</a> <a href="attachment.cgi?id=129481&action=edit" title="dmesg-guest-slubdebug-20170203-drm-tip: 2017y-02m-02d-19h-49m-15s">[details]</a> > > dmesg-guest-slubdebug-20170203-drm-tip: 2017y-02m-02d-19h-49m-15s > > > > Here is the guest dmesg log for "Boot up guest with > > slub_debug=FPZU,kmalloc-1024”. > > Sorry, but that log isn't really that useful. > > It's not complete, please attach the *whole* kernel output (first line > should start with "Linux version"). > > Please make sure the cmd line args include drm.debug=0xe. > > Please use slub_debug without any further options, or if you have a good > reason to think those should be enough, please explain. > > Also, I think it would be good if this bug contained more detailed > instructions on how to reproduce the problem. After I set drm.debug=0xe and slub_debug=FMZU, I got the same logs as the above attachment. And actually it is the full log I can fetched, since it is the guest dmesg log not host dmesg log. I added the console=ttyS0,115200,8n1 in guest grub. In host, I boot up guest as below: modprobe kvm modprobe kvm_intel modprobe vfio modprobe vfio_pci echo "0000:00:02.0" > /sys/bus/pci/devices/0000:00:02.0/driver/unbind echo "8086 1626" > /sys/bus/pci/drivers/vfio-pci/new_id ('8086 1626' generated by 'lspci -n -s 00:02.0') qemu-system-x86_64 -enable-kvm -vga cirrus -m 2048 -hda /home/testrunner/ubuntu-16.04.img -device vfio-pci,host=00:02.0,id=hostdev0,bus=pci.0,addr=0x6 -usb -usbdevice tablet -net nic,macaddr=00:AA:BB:AB:DE:00 -net tap,script=/etc/qemu-ifup -serial stdio -cpu host > 3.log 2>&1 &</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> <li>You are on the CC list for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>