Hi, David Laight wrote:
'struct trapframe' (sys/arch/i386/include/frame.h) currently uses 'int' for all the fields. This is a problem for the segment registers where the asm code only writes 16 bits - leaving the high bits unchanged. The kernel doesn't care it will only load the low bits, however the values get passed to userspace (eg to signal handlers) where the high bits are distracting at best. The following patch make all the copies 16bit (without affecting binary conpatibility anywhere).
Does this mean, we are passing uninitialized memory to userland, i.e. some unknwon values from the kernel (or from another user process)? IMHO, that's in an urgent need for a fix. Ciao, Wolfgang -- Wolfgang%Solfrank.net@localhost Wolfgang Solfrank