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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syscalls	sys_membarrier(): system-wide memory barrier (generic, x86)	2015-09-11 15:21:34 -07:00
vdso	x86/vdso: Emit a GNU hash	2015-08-08 10:42:07 +02:00
vsyscall	mm: mark most vm_operations_struct const	2015-09-10 13:29:01 -07:00
Makefile	x86/entry: Move C entry and exit code to arch/x86/entry/common.c	2015-07-07 10:59:05 +02:00
calling.h	x86/asm/entry/64: Save all regs on interrupt entry	2015-07-07 10:59:07 +02:00
common.c	x86/entry: Remove do_notify_resume(), syscall_trace_leave(), and their TIF masks	2015-08-05 10:54:35 +02:00
entry_32.S	x86/entry/32: Migrate to C exit path	2015-08-05 10:54:35 +02:00
entry_64.S	x86/nmi/64: Fix a paravirt stack-clobbering bug in the NMI code	2015-09-22 22:40:36 +02:00
entry_64_compat.S	Merge branch 'x86/urgent' into x86/asm to fix up conflicts and to pick up fixes	2015-08-18 09:39:47 +02:00
syscall_32.c	…
syscall_64.c	…
thunk_32.S	Merge branch 'x86-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-06-22 17:59:09 -07:00
thunk_64.S	Merge branch 'x86-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2015-06-22 17:59:09 -07:00