Andy Lutomirski 83c133cf11 x86/nmi/64: Fix a paravirt stack-clobbering bug in the NMI code ... The NMI entry code that switches to the normal kernel stack needs to be very careful not to clobber any extra stack slots on the NMI stack. The code is fine under the assumption that SWAPGS is just a normal instruction, but that assumption isn't really true. Use SWAPGS_UNSAFE_STACK instead. This is part of a fix for some random crashes that Sasha saw. Fixes: 9b6e6a8334 ("x86/nmi/64: Switch stacks on userspace NMI entry") Reported-and-tested-by: Sasha Levin <sasha.levin@oracle.com> Signed-off-by: Andy Lutomirski <luto@kernel.org> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/974bc40edffdb5c2950a5c4977f821a446b76178.1442791737.git.luto@kernel.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>		2015-09-22 22:40:36 +02:00
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boot	lib/decompressors: use real out buf size for gunzip with kernel	2015-09-10 13:29:01 -07:00
configs	Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux	2015-09-04 15:49:32 -07:00
crypto	crypto: ghash-clmulni: specify context size for ghash async algorithm	2015-09-04 23:21:07 +08:00
entry	x86/nmi/64: Fix a paravirt stack-clobbering bug in the NMI code	2015-09-22 22:40:36 +02:00
ia32	x86/compat: Move copy_siginfo_*_user32() to signal_compat.c	2015-07-06 15:28:55 +02:00
include	Mostly stable material, a lot of ARM fixes.	2015-09-18 09:23:08 -07:00
kernel	x86/paravirt: Replace the paravirt nop with a bona fide empty function	2015-09-22 22:40:28 +02:00
kvm	KVM: vmx: fix VPID is 0000H in non-root operation	2015-09-16 15:17:27 +02:00
lguest	genirq: Remove irq argument from irq flow handlers	2015-09-16 15:47:51 +02:00
lib	x86/asm/delay: Introduce an MWAITX-based delay with a configurable timer	2015-08-22 14:52:16 +02:00
math-emu	Merge branch 'x86/urgent' into x86/asm to fix up conflicts and to pick up fixes	2015-08-18 09:39:47 +02:00
mm	Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-09-17 11:01:34 -07:00
net	bpf: Make the bpf_prog_array_map more generic	2015-08-09 22:50:05 -07:00
oprofile	x86/asm/entry: Change all 'user_mode_vm()' calls to 'user_mode()'	2015-03-23 11:14:17 +01:00
pci	Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-09-01 14:33:35 -07:00
platform	kexec: split kexec_load syscall from kexec core code	2015-09-10 13:29:01 -07:00
power	x86/ldt: Make modify_ldt synchronous	2015-07-31 10:23:23 +02:00
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
ras	x86/ras: Move AMD MCE injector to arch/x86/ras/	2015-08-13 10:12:54 +02:00
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
tools	x86, build: replace Perl script with Shell script	2015-01-26 13:37:18 -08:00
um	x86/asm/tsc: Remove rdtsc_barrier()	2015-07-06 15:23:30 +02:00
video
xen	xen: MFN/GFN/BFN terminology changes for 4.3-rc0	2015-09-10 16:21:11 -07:00
.gitignore	x86/build: Add arch/x86/purgatory/ make generated files to gitignore	2014-10-09 09:29:46 +02:00
Kbuild	x86/asm/entry, x86/vdso: Move the vDSO code to arch/x86/entry/vdso/	2015-06-03 18:51:37 +02:00
Kconfig	Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-09-17 11:01:34 -07:00
Kconfig.cpu	Merge branch 'x86-nuke-platforms-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2014-04-02 13:15:58 -07:00
Kconfig.debug	x86/entry/64, x86/nmi/64: Add CONFIG_DEBUG_ENTRY NMI testing code	2015-07-17 12:50:14 +02:00
Makefile	Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-09-01 08:40:25 -07:00
Makefile.um	kbuild: use relative path more to include Makefile	2015-04-02 16:42:08 +02:00
Makefile_32.cpu