freebsd-dev/stand/efi/loader/arch
Andrew Turner 78da604641 Ensure we have a large enough stack for the lua loader
Lua has a few places where it allocates a large buffer on the stack. This
is normally fine, except there are a few places where there can be multiple
frames with this buffer. This can cause a stack overflow on some arm64 SoCs.

Fix this by allocating our own stack in loader.efi large enough for these
objects. The required size has been found by tracing how the stack pointer
changes in a virtual machine and found to be no larger than 50kB. A
larger stack is allocated to reduce the likelihood of overflow from future
changes.

Reviewed by:	kevans
Approved by:	re (kib)
Differential Revision:	https://reviews.freebsd.org/D16886
2018-08-27 11:14:49 +00:00
..
amd64
arm Prefer uintXX_t to u_intXX_t 2018-03-13 16:33:00 +00:00
arm64 Ensure we have a large enough stack for the lua loader 2018-08-27 11:14:49 +00:00
i386 Fix casts between 64-bit physical addresses and pointers in EFI. 2018-08-18 20:28:25 +00:00