Michael Zhivich 3ad50c7c66 x86/bugs: Fix use of possibly uninit value in amd_check_tsa_microcode() ...

For kernels compiled with CONFIG_INIT_STACK_NONE=y, the value of __reserved
field in zen_patch_rev union on the stack may be garbage.  If so, it will
prevent correct microcode check when consulting p.ucode_rev, resulting in
incorrect mitigation selection.

This is a stable-only fix.

Cc: <stable@vger.kernel.org>
Signed-off-by: Michael Zhivich <mzhivich@akamai.com>
Fixes: 7a0395f660 ("x86/bugs: Add a Transient Scheduler Attacks mitigation")
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2025-08-01 09:48:44 +01:00

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acpi

x86/acpi: Don't limit CPUs to 1 for Xen PV guests due to disabled ACPI

2025-04-20 10:15:05 +02:00

apic

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cpu

x86/bugs: Fix use of possibly uninit value in amd_check_tsa_microcode()

2025-08-01 09:48:44 +01:00

fpu

x86/pkeys: Simplify PKRU update in signal frame

2025-07-06 11:01:47 +02:00

kprobes

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.gitignore

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alternative.c

x86/ibt: Handle FineIBT in handle_cfi_failure()

2025-05-29 11:02:50 +02:00

amd_gart_64.c

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amd_nb.c

x86/amd_nb: Use rdmsr_safe() in amd_get_mmconfig_range()

2025-03-13 13:01:38 +01:00

aperture_64.c

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apm_32.c

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asm-offsets_32.c

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asm-offsets_64.c

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asm-offsets.c

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audit_64.c

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bootflag.c

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callthunks.c

x86/xen: remove hypercall page

2024-12-19 18:13:24 +01:00

cet.c

x86/fred: Clear WFE in missing-ENDBRANCH #CPs

2025-01-02 10:34:22 +01:00

cfi.c

x86/ibt: Handle FineIBT in handle_cfi_failure()

2025-05-29 11:02:50 +02:00

check.c

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cpuid.c

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crash_dump_32.c

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crash_dump_64.c

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crash.c

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devicetree.c

x86/of: Don't use DTB for SMP setup if ACPI is enabled

2025-03-22 12:54:20 -07:00

doublefault_32.c

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dumpstack_32.c

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dumpstack_64.c

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dumpstack.c

x86/dumpstack: Fix inaccurate unwinding from exception stacks due to misplaced assignment

2025-04-10 14:39:21 +02:00

e820.c

x86/e820: Fix handling of subpage regions when calculating nosave ranges in e820__register_nosave_regions()

2025-04-20 10:16:01 +02:00

early_printk.c

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early-quirks.c

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ebda.c

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eisa.c

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espfix_64.c

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fred.c

x86/fred: Fix the FRED RSP0 MSR out of sync with its per-CPU cache

2025-01-23 17:23:03 +01:00

ftrace_32.S

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ftrace_64.S

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ftrace.c

x86/its: Add support for ITS-safe return thunk

2025-05-18 08:24:59 +02:00

head32.c

x86/microcode: Consolidate the loader enablement checking

2025-05-18 08:24:54 +02:00

head64.c

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head_32.S

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head_64.S

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hpet.c

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hw_breakpoint.c

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i8237.c

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i8253.c

x86/i8253: Call clockevent_i8253_disable() with interrupts disabled

2025-05-02 07:59:26 +02:00

i8259.c

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ibt_selftest.S

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idt.c

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io_delay.c

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ioport.c

x86/iopl: Cure TIF_IO_BITMAP inconsistencies

2025-06-19 15:32:36 +02:00

irq_32.c

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irq_64.c

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irq_work.c

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irq.c

x86/irq: Ensure initial PIR loads are performed exactly once

2025-06-19 15:32:04 +02:00

irqflags.S

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irqinit.c

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itmt.c

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jailhouse.c

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jump_label.c

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kdebugfs.c

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kexec-bzimage64.c

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kgdb.c

x86/traps: Initialize DR7 by writing its architectural reset value

2025-08-01 09:48:39 +01:00

ksysfs.c

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kvm.c

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kvmclock.c

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ldt.c

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machine_kexec_32.c

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machine_kexec_64.c

x86/kexec: Allocate PGD for x86_64 transition page tables separately

2025-02-17 10:04:54 +01:00

Makefile

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mmconf-fam10h_64.c

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module.c

x86/its: Use dynamic thunks for indirect branches

2025-05-18 08:24:59 +02:00

mpparse.c

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msr.c

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nmi_selftest.c

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nmi.c

x86/nmi: Add an emergency handler in nmi_desc & use it in nmi_shootdown_cpus()

2025-05-29 11:02:38 +02:00

paravirt-spinlocks.c

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paravirt.c

x86/paravirt: Move halt paravirt calls under CONFIG_PARAVIRT

2025-04-20 10:16:00 +02:00

pci-dma.c

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pcspeaker.c

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perf_regs.c

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platform-quirks.c

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pmem.c

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probe_roms.c

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process_32.c

x86/traps: Initialize DR7 by writing its architectural reset value

2025-08-01 09:48:39 +01:00

process_64.c

x86/traps: Initialize DR7 by writing its architectural reset value

2025-08-01 09:48:39 +01:00

process.c

x86/process: Move the buffer clearing before MONITOR

2025-07-10 16:05:14 +02:00

process.h

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ptrace.c

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pvclock.c

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quirks.c

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reboot_fixups_32.c

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reboot.c

x86/nmi: Add an emergency handler in nmi_desc & use it in nmi_shootdown_cpus()

2025-05-29 11:02:38 +02:00

relocate_kernel_32.S

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relocate_kernel_64.S

x86: Fix build regression with CONFIG_KEXEC_JUMP enabled

2024-12-14 20:04:13 +01:00

resource.c

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rethook.c

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rtc.c

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setup_percpu.c

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setup.c

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sev_verify_cbit.S

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shstk.c

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signal_32.c

x86/fred/signal: Prevent immediate repeat of single step trap on return from SIGTRAP handler

2025-06-19 15:32:37 +02:00

signal_64.c

x86/fred/signal: Prevent immediate repeat of single step trap on return from SIGTRAP handler

2025-06-19 15:32:37 +02:00

signal.c

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smp.c

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smpboot.c

x86/smpboot: Fix INIT delay assignment for extended Intel Families

2025-05-29 11:02:11 +02:00

stacktrace.c

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static_call.c

x86/its: Add support for ITS-safe return thunk

2025-05-18 08:24:59 +02:00

step.c

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sys_ia32.c

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sys_x86_64.c

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tboot.c

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time.c

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tls.c

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tls.h

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trace_clock.c

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trace.c

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tracepoint.c

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traps.c

x86/traps: Initialize DR6 by writing its architectural reset value

2025-07-06 11:01:42 +02:00

tsc_msr.c

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tsc_sync.c

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tsc.c

x86/tsc: Always save/restore TSC sched_clock() on suspend/resume

2025-04-10 14:39:37 +02:00

umip.c

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unwind_frame.c

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unwind_guess.c

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unwind_orc.c

x86/unwind/orc: Fix unwind for newly forked tasks

2024-12-05 14:01:21 +01:00

uprobes.c

uprobes/x86: Harden uretprobe syscall trampoline check

2025-04-10 14:39:37 +02:00

verify_cpu.S

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vm86_32.c

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vmcore_info_32.c

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vmcore_info_64.c

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vmlinux.lds.S

x86/its: Add support for ITS-safe return thunk

2025-05-18 08:24:59 +02:00

vsmp_64.c

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x86_init.c

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