freebsd-skq/stand/efi
andrew abf44e17e8 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
..
boot1 Ensure we have a large enough stack for the lua loader 2018-08-27 11:14:49 +00:00
fdt Remove now-unused variable after r328809 2018-02-04 17:31:50 +00:00
include Implement efiblk_get_pdinfo_by_device_path 2018-07-23 20:36:54 +00:00
libefi Implement efiblk_get_pdinfo_by_device_path 2018-07-23 20:36:54 +00:00
loader Ensure we have a large enough stack for the lua loader 2018-08-27 11:14:49 +00:00
loader_4th Create a loader for each interpreter for x86 BIOS and all EFI 2018-08-14 18:44:41 +00:00
loader_lua Create a loader for each interpreter for x86 BIOS and all EFI 2018-08-14 18:44:41 +00:00
loader_simp Create a loader for each interpreter for x86 BIOS and all EFI 2018-08-14 18:44:41 +00:00
Makefile Create a loader for each interpreter for x86 BIOS and all EFI 2018-08-14 18:44:41 +00:00
Makefile.inc Hoist EFI_TARGET and SOURCE_DATE_EPOCH up into efi/Makefile.inc 2018-07-20 05:18:03 +00:00