Andy Lutomirski 61f01dd941 x86_64, asm: Work around AMD SYSRET SS descriptor attribute issue ... AMD CPUs don't reinitialize the SS descriptor on SYSRET, so SYSRET with SS == 0 results in an invalid usermode state in which SS is apparently equal to __USER_DS but causes #SS if used. Work around the issue by setting SS to __KERNEL_DS __switch_to, thus ensuring that SYSRET never happens with SS set to NULL. This was exposed by a recent vDSO cleanup. Fixes: e7d6eefaaa x86/vdso32/syscall.S: Do not load __USER32_DS to %ss Signed-off-by: Andy Lutomirski <luto@kernel.org> Cc: Peter Anvin <hpa@zytor.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Denys Vlasenko <vda.linux@googlemail.com> Cc: Brian Gerst <brgerst@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2015-04-26 17:57:38 -07:00
..
boot	Merge branch 'x86-boot-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-04-13 13:19:10 -07:00
configs	x86/build/defconfig: Enable USB_EHCI_TT_NEWSCHED=y	2015-02-19 02:21:14 +01:00
crypto	crypto: x86/sha512_ssse3 - fixup for asm function prototype change	2015-04-24 20:09:01 +08:00
ia32	x86_64, asm: Work around AMD SYSRET SS descriptor attribute issue	2015-04-26 17:57:38 -07:00
include	x86_64, asm: Work around AMD SYSRET SS descriptor attribute issue	2015-04-26 17:57:38 -07:00
kernel	x86_64, asm: Work around AMD SYSRET SS descriptor attribute issue	2015-04-26 17:57:38 -07:00
kvm	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2015-04-26 17:22:07 -07:00
lguest	Some virtio internal cleanups, a new virtio device "virtio input", and	2015-04-22 10:55:06 -07:00
lib	x86: fix special __probe_kernel_write() tail zeroing case	2015-04-24 06:58:27 -07:00
math-emu	asmlinkage, x86: Add explicit __visible to arch/x86/*	2014-05-05 16:07:44 -07:00
mm	mm: move memtest under mm	2015-04-14 16:49:06 -07:00
net	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2014-12-10 15:48:20 -05:00
oprofile	x86/asm/entry: Change all 'user_mode_vm()' calls to 'user_mode()'	2015-03-23 11:14:17 +01:00
pci	PCI changes for the v4.1 merge window:	2015-04-13 15:45:47 -07:00
platform	TTY/Serial patches for 4.1-rc1	2015-04-21 09:33:10 -07:00
power	x86/asm/entry: Rename 'init_tss' to 'cpu_tss'	2015-03-06 08:32:58 +01:00
purgatory	Merge branches 'x86-build-for-linus', 'x86-cleanups-for-linus' and 'x86-debug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-12-10 12:35:46 -08:00
realmode	Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-02-16 14:58:12 -08:00
syscalls	xen: features and fixes for 4.1-rc0	2015-04-16 14:01:03 -05:00
tools	x86, build: replace Perl script with Shell script	2015-01-26 13:37:18 -08:00
um	Merge branch 'exec_domain_rip_v2' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc	2015-04-15 13:53:55 -07:00
vdso	Merge branch 'x86-vdso-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-04-13 13:36:45 -07:00
video	…
xen	xen: features and fixes for 4.1-rc0	2015-04-16 14:01:03 -05:00
.gitignore	x86/build: Add arch/x86/purgatory/ make generated files to gitignore	2014-10-09 09:29:46 +02:00
Kbuild	kexec: create a new config option CONFIG_KEXEC_FILE for new syscall	2014-08-29 16:28:16 -07:00
Kconfig	Initial ACPI support for arm64:	2015-04-24 08:23:45 -07:00
Kconfig.cpu	…
Kconfig.debug	x86, intel-mid: remove Intel MID specific serial support	2015-03-07 03:25:18 +01:00
Makefile	kbuild: use relative path more to include Makefile	2015-04-02 16:42:08 +02:00
Makefile.um	kbuild: use relative path more to include Makefile	2015-04-02 16:42:08 +02:00
Makefile_32.cpu	…