From: Sean Christopherson <sean.j.christopherson@intel.com>
To: "Paolo Bonzini" <pbonzini@redhat.com>,
"Radim Krčmář" <rkrcmar@redhat.com>
Cc: kvm@vger.kernel.org, Evgeny Yakovlev <wrfsh@yandex-team.ru>
Subject: [kvm-unit-tests PATCH 0/3] x86: Cleanup max test CPUs
Date: Fri, 6 Sep 2019 09:34:47 -0700 [thread overview]
Message-ID: <20190906163450.30797-1-sean.j.christopherson@intel.com> (raw)
Fix a bug Evgeny reported where init_apic_map() can cause random
corruption due accessing random bytes far beyond the bounds of
online_cpus. Take the opportunity to bump the max number of test CPUs
to a realistic maximum, i.e. what kvm-unit-tests can support without a
major rework.
Sean Christopherson (3):
x86: Fix out of bounds access when processing online_cpus
x86: Declare online_cpus based on MAX_TEST_CPUS
x86: Bump max number of test CPUs to 255
lib/x86/apic-defs.h | 2 +-
lib/x86/apic.c | 4 ++--
lib/x86/smp.c | 2 --
x86/cstart.S | 2 +-
x86/cstart64.S | 2 +-
5 files changed, 5 insertions(+), 7 deletions(-)
--
2.22.0
next reply other threads:[~2019-09-06 16:34 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-06 16:34 Sean Christopherson [this message]
2019-09-06 16:34 ` [kvm-unit-tests PATCH 1/3] x86: Fix out of bounds access when processing online_cpus Sean Christopherson
2019-09-06 16:34 ` [kvm-unit-tests PATCH 2/3] x86: Declare online_cpus based on MAX_TEST_CPUS Sean Christopherson
2019-09-06 16:34 ` [kvm-unit-tests PATCH 3/3] x86: Bump max number of test CPUs to 255 Sean Christopherson
2019-09-10 14:46 ` Paolo Bonzini
2019-09-10 7:57 ` [kvm-unit-tests PATCH 0/3] x86: Cleanup max test CPUs Peter Xu
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