Atsushi Nemoto wrote:
If you did not restore static registers in kernel stack on
restore_sigcontext(), succeeding RESTORE_STATIC in restore_all will
load garbages to static registers.
You're right the patch I sent is not sufficient. However, we actually
could restore save_static_function (well if we do it, I think it's
much better to do it in assembly code...) for sys_sigreturn() _only_.
In that case RESTORE_STATIC should load correct values, shouldn't it ?
But the points are:
- get rid of saving static registers in setup_sigcontext()
- get rid of restoring static registers in restore_sigcontext()
- free space in the signal frame
what do you think ?
--
Franck
