Borislav Petkov (AMD) 77245f1c3c x86/CPU/AMD: Do not leak quotient data after a division by 0 ...

Under certain circumstances, an integer division by 0 which faults, can
leave stale quotient data from a previous division operation on Zen1
microarchitectures.

Do a dummy division 0/1 before returning from the #DE exception handler
in order to avoid any leaks of potentially sensitive data.

Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Cc: <stable@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2023-08-09 07:55:00 -07:00

..

mce

x86/MCE/AMD: Decrement threshold_bank refcount when removing threshold blocks

2023-07-22 17:35:16 +02:00

microcode

x86/microcode/AMD: Load late on both threads too

2023-06-12 11:02:17 +02:00

mtrr

x86/mtrr: Unify debugging printing

2023-06-01 15:04:33 +02:00

resctrl

x86/resctrl: Implement rename op for mon groups

2023-06-07 12:40:36 +02:00

sgx

Merge tag 'mm-stable-2023-06-24-19-15' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2023-06-28 10:28:11 -07:00

.gitignore

.gitignore: add SPDX License Identifier

2020-03-25 11:50:48 +01:00

acrn.c

x86/acrn: Set up timekeeping

2022-08-04 11:11:59 +02:00

amd.c

x86/CPU/AMD: Do not leak quotient data after a division by 0

2023-08-09 07:55:00 -07:00

aperfmperf.c

x86/aperfmperf: Erase stale arch_freq_scale values when disabling frequency invariance readings

2023-01-16 10:19:15 +01:00

bugs.c

Merge tag 'gds-for-linus-2023-08-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2023-08-07 17:03:54 -07:00

cacheinfo.c

x86/cpu/cacheinfo: Remove cpu_callout_mask dependency

2023-05-15 13:44:52 +02:00

centaur.c

x86/cpu/centaur: Add Centaur family >=7 CPUs initialization support

2020-09-11 10:53:19 +02:00

common.c

Merge tag 'gds-for-linus-2023-08-01' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2023-08-07 17:03:54 -07:00

cpu.h

x86/speculation: Add Gather Data Sampling mitigation

2023-07-19 16:45:37 -07:00

cpuid-deps.c

x86/cpufeatures: Add Bandwidth Monitoring Event Configuration feature flag

2023-01-23 17:38:31 +01:00

cyrix.c

x86/cyrix: include header linux/isa-dma.h

2022-07-26 14:03:12 -05:00

feat_ctl.c

x86/cpu: Include the header of init_ia32_feat_ctl()'s prototype

2022-09-26 17:06:27 +02:00

hygon.c

Merge tag 'x86_cpu_for_v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2022-12-13 14:56:56 -08:00

hypervisor.c

x86/paravirt: Remove const mark from x86_hyper_xen_hvm variable

2019-07-17 08:09:59 +02:00

intel_epb.c

x86/intel_epb: Set Alder Lake N and Raptor Lake P normal EPB

2022-11-03 11:31:01 -07:00

intel_pconfig.c

x86/pconfig: Detect PCONFIG targets

2018-03-12 12:10:54 +01:00

intel.c

Merge tag 'modules-6.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux

2023-04-27 16:36:55 -07:00

Makefile

x86/cpu: Remove X86_FEATURE_NAMES

2023-05-15 20:03:08 +02:00

match.c

x86/cpu: Add a steppings field to struct x86_cpu_id

2020-04-20 12:19:21 +02:00

mkcapflags.sh

x86/cpu: Print VMX flags in /proc/cpuinfo using VMX_FEATURES_*

2020-01-13 18:36:02 +01:00

mshyperv.c

Merge tag 'x86_sev_for_v6.4_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2023-04-25 10:48:08 -07:00

perfctr-watchdog.c

x86/nmi_watchdog: Fix old-style NMI watchdog regression on old Intel CPUs

2021-06-10 10:04:40 +02:00

powerflags.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

proc.c

x86/aperfmperf: Integrate the fallback code from show_cpuinfo()

2022-04-27 20:22:20 +02:00

rdrand.c

x86/rdrand: Remove "nordrand" flag in favor of "random.trust_cpu"

2022-07-18 15:04:04 +02:00

scattered.c

x86/cpufeatures: Add Bandwidth Monitoring Event Configuration feature flag

2023-01-23 17:38:31 +01:00

topology.c

x86/topology: Fix erroneous smp_num_siblings on Intel Hybrid platforms

2023-05-25 10:48:42 -07:00

transmeta.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

tsx.c

x86/cpu: Remove redundant extern x86_read_arch_cap_msr()

2023-01-10 12:40:24 +01:00

umc.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

umwait.c

x86/umwait: move to use bus_get_dev_root()

2023-03-17 15:29:29 +01:00

vmware.c

sched/clock/x86: Mark sched_clock() noinstr

2023-01-31 15:01:47 +01:00

vortex.c

x86/CPU: Add support for Vortex CPUs

2021-10-21 15:49:07 +02:00

zhaoxin.c

x86/cpu: Reinitialize IA32_FEAT_CTL MSR on BSP during wakeup

2020-06-15 14:18:37 +02:00