On 7/7/26 21:06, Thomas Gleixner wrote:
Randomizing the syscall stack can only happen after state is established
via enter_from_user_mode() or syscall_enter_from_user_mode(). The earlier
it happens the better.
Provide two new macros to consolidate that:
- enter_from_user_mode_randomize_stack()
enter_from_user_mode();
add_random_kstack_offset_irqsoff();
- syscall_enter_from_user_mode_randomize_stack()
enter_from_user_mode_randomize_stack();
syscall_enter_from_user_mode_work();
to reduce boiler plate code.
Those are macros and not inline functions as the latter would limit the
stack randomization scope to the inline function itself.
Signed-off-by: Thomas Gleixner <[email protected]>
---
include/linux/entry-common.h | 56
+++++++++++++++++++++++++++++++++++++++++++
1 file changed, 56 insertions(+)
Reviewed-by: Philippe Mathieu-Daudé <[email protected]>
