On Wed, Apr 27, 2016 at 08:57:24AM +0200, Aurelien Jarno wrote: > On 2016-04-26 20:12, Guenter Roeck wrote: > > Hi, > > > > when running qemu version 2.6.0-rc3, I get the following error message. > > > > /opt/buildbot/qemu/qemu/tcg/tcg.c:1769: tcg fatal error > > > > qemu command line is as follows. > > > > qemu-system-ppc64 -M mpc8544ds \ > > -cpu e5500 \ > > -m 1024 -kernel arch/powerpc/boot/uImage -initrd busybox-ppc.cpio \ > > -nographic -vga none -monitor null -no-reboot \ > > --append "rdinit=/sbin/init console=tty console=ttyS0" \ > > -machine "dt_compatible=fsl,,P5020DS" > > > > Files are from my test suite at https://github.com/groeck/linux-build-test. > > I have try to reproduce the issue with a kernel build with my toolchain > and your defconfig, but it worked for me. Could you please share the > binaries so that it is easier to reproduce the issue? > I forgot to mention - it happens during reboot.
Assuming you are using my root file system, try adding "doreboot" to the command line. Thanks, Guenter > > Bisect points to commit 40ae5c62ebaaf7d9d3b93b88c2d32bf6342f7889 ("tcg: > > Introduce temp_load"). Bisect log is attached. > > I look at this patch again quickly, and I don't think the bug is > actually introduced by this commit, it is just that it does more strict > tests on the value. I guess it was working before by chance by loading > a random value into the register. That said to look deeper into it, it > would be better to be able to reproduce the issue. > > Aurelien > > -- > Aurelien Jarno GPG: 4096R/1DDD8C9B > aurel...@aurel32.net http://www.aurel32.net