The patch below: http://marc.info/?t=130484658300001&r=1&w=2
does fix the issue, but Tony and Kevin have a better solution to address it. So the reason is clear, that omap_readl should be declared as notrace -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/791016 Title: kernel panic when enabling function-graphy of ftrace -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs