tcg.c:1693: tcg fatal error

this started happening after the launchpad buildd trusty deploy
https://code.launchpad.net/~costamagnagianfranco/+archive/ubuntu/firefox/+build/6224439


debconf-updatepo
qemu: uncaught target signal 11 (Segmentation fault) - core dumped
Segmentation fault (core dumped)
qemu: uncaught target signal 11 (Segmentation fault) - core dumped
Segmentation fault (core dumped)
/build/buildd/qemu-2.0.0+dfsg/tcg/tcg.c:1693: tcg fatal error
/build/buildd/qemu-2.0.0+dfsg/tcg/tcg.c:1693: tcg fatal error

this seems to be the patch needed
https://patches.linaro.org/32473/