freebsd-skq

History

Konstantin Belousov f2c18deb0e Fix handling of one more possible exception on return to usermode.

If %ss is loaded with a segment pointing to a non-present descriptor
by the IRETD instruction, a kernel-mode #SS exception is generated.
Resulting T_STKFLT trap must be checked against doreti_iret_fault
location and handled, otherwise userspace may panic the kernel.

Note that this is i386 variant of FreeBSD-SA-15:21.amd64, but unlike
amd64, there is no swapgs on i386 and the issue is arguably not
exploitable.

Reported by:	Maxime Villard <max@m00nbsd.net>
Tested by:	pho
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week

2017-07-08 11:07:39 +00:00

acpica

If x86 CPU implementation of the MWAIT instruction reasonably

2015-05-09 12:28:48 +00:00

bios

Remove Micro Channel Architecture support. Of the commonly available

2017-02-15 23:04:25 +00:00

cloudabi32

Move struct syscall_args syscall arguments parameters container into

2017-06-12 21:03:23 +00:00

conf

Garbage collect kernel option TWA_FLASH_FIRMWARE