Josh Poimboeuf 8d5cff499a x86/speculation: Fill RSB on vmexit for IBRS ...

commit 9756bba28470722dacb79ffce554336dd1f6a6cd upstream.

Prevent RSB underflow/poisoning attacks with RSB.  While at it, add a
bunch of comments to attempt to document the current state of tribal
knowledge about RSB attacks and what exactly is being mitigated.

Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2022-07-23 12:54:09 +02:00

..

alpha

alpha: fix alloc_zeroed_user_highpage_movable()

2022-06-09 10:22:43 +02:00

arc

ARC: entry: fix syscall_trace_exit argument

2022-04-27 14:39:00 +02:00

arm

ARM: dts: stm32: use the correct clock source for CEC on stm32mp151

2022-07-21 21:24:40 +02:00

arm64

arm64: dts: broadcom: bcm4908: Fix cpu node for smp boot

2022-07-21 21:24:23 +02:00

csky

csky: patch_text: Fixup last cpu should be master

2022-06-09 10:23:26 +02:00

h8300

Merge branch 'akpm' (patches from Andrew)

2021-09-08 12:55:35 -07:00

hexagon

uaccess: fix integer overflow on access_ok()

2022-03-28 09:58:45 +02:00

ia64

ia64: define get_cycles macro for arch-override

2022-05-30 09:29:12 +02:00

m68k

m68knommu: fix undefined reference to `mach_get_rtc_pll'

2022-06-14 18:36:15 +02:00

microblaze

uaccess: fix nios2 and microblaze get_user_8()

2022-04-08 14:23:18 +02:00

mips

MIPS: Remove repetitive increase irq_err_count

2022-06-29 09:03:24 +02:00

nds32

nds32: fix access_ok() checks in get/put_user

2022-03-28 09:58:46 +02:00

nios2

nios2: use fallback for random_get_entropy() instead of zero

2022-05-30 09:29:14 +02:00

openrisc

openrisc: start CPU timer early in boot

2022-06-09 10:22:38 +02:00

parisc

parisc: Enable ARCH_HAS_STRICT_MODULE_RWX

2022-06-29 09:03:30 +02:00

powerpc

powerpc/xive/spapr: correct bitmap allocation size

2022-07-21 21:24:33 +02:00

riscv

riscv/mm: Add XIP_FIXUP for riscv_pfn_base

2022-07-12 16:35:01 +02:00

s390

KVM: s390x: fix SCK locking

2022-07-12 16:35:02 +02:00

sh

sh: convert nommu io{re,un}map() to static inline functions

2022-07-21 21:24:14 +02:00

sparc

signal: Deliver SIGTRAP on perf event asynchronously if blocked

2022-06-09 10:22:48 +02:00

um

x86/alternative: Implement .retpoline_sites support

2022-07-23 12:53:54 +02:00

x86

x86/speculation: Fill RSB on vmexit for IBRS

2022-07-23 12:54:09 +02:00

xtensa

xtensa: Fix refcount leak bug in time.c

2022-06-29 09:03:29 +02:00

.gitignore

…

Kconfig

stack: Constrain and fix stack offset randomization with Clang builds

2022-04-08 14:23:06 +02:00