Mathias Krause 81fa32bd7e drivers/linux: enforce address requirement for IOCTL_ALLOC_PHYSMEM ...

Try harder to fulfill the physical address constraint for the
IOCTL_ALLOC_PHYSMEM ioctl by trying to allocate memory from the zones
that fit the maximum address best, but fall-back to the normal zone in
case the allocation fails.

If we fail to allocate memory that fulfills the maximum physical address
constraint, make the ioctl() fail as well instead of emitting a warning.

This is safer then making, e.g., the tools.smm.smm_ptr module corrupt
unrelated memory just because the allocation happens to be above 4GB but
the pointer passed to SMM is truncated to 32 bit.

Signed-off-by: Mathias Krause <minipli@grsecurity.net>

2022-02-28 15:39:19 -08:00

..

linux

drivers/linux: enforce address requirement for IOCTL_ALLOC_PHYSMEM

2022-02-28 15:39:19 -08:00

osx

Fix macOS asm build issue

2020-01-16 08:59:09 -08:00

win7

drivers/windows: simplify _swsmi() and fix comments

2022-02-16 08:22:33 -08:00