> thanks, applied. Does this explain the crash/hang problems with 32-bit > apps on 64-bit kernels? What was the exact failure mode?
It does. Any 32-bit process trying to run a signal handler when it had used the FPU, would clobber "current" with FP bits. The observed failure mode was shortly after this in the signal handler setup code, when it crashed due to current->mm being zero (current->pid also being zero, and the whole first 512 bytes of the task_struct being garbage). Thanks, Roland -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
