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? > 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