A fix and an email address update: - Prevent FPU state corruption. The condition in irq_fpu_usable() grants FPU usage when the FPU is not used in the kernel. That's just wrong as it does not take the fpregs_lock()'ed regions into account. If FPU usage happens within such a region from interrupt context, then the FPU state gets corrupted. That's a long standing bug, which got unearthed by the recent changes to the random code. - Josh wants to use his kernel.org email address