Linux 3.3.6
This commit is contained in:
Justin M. Forbes
parent
29201d8820
commit
9520d51b59
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@ -1,106 +0,0 @@
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From 5b40572ed5f0344b9dbee486a17c589ce1abe1a3 Mon Sep 17 00:00:00 2001
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From: Avi Kivity <avi@redhat.com>
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Date: Mon, 5 Mar 2012 14:23:29 +0200
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Subject: [PATCH] KVM: Ensure all vcpus are consistent with in-kernel irqchip
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settings
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If some vcpus are created before KVM_CREATE_IRQCHIP, then
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irqchip_in_kernel() and vcpu->arch.apic will be inconsistent, leading
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to potential NULL pointer dereferences.
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Fix by:
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- ensuring that no vcpus are installed when KVM_CREATE_IRQCHIP is called
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- ensuring that a vcpu has an apic if it is installed after KVM_CREATE_IRQCHIP
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This is somewhat long winded because vcpu->arch.apic is created without
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kvm->lock held.
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Based on earlier patch by Michael Ellerman.
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Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
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Signed-off-by: Avi Kivity <avi@redhat.com>
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---
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arch/ia64/kvm/kvm-ia64.c | 5 +++++
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arch/x86/kvm/x86.c | 8 ++++++++
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include/linux/kvm_host.h | 7 +++++++
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virt/kvm/kvm_main.c | 4 ++++
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4 files changed, 24 insertions(+), 0 deletions(-)
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diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c
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index d8ddbba..f5104b7 100644
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--- a/arch/ia64/kvm/kvm-ia64.c
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+++ b/arch/ia64/kvm/kvm-ia64.c
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@@ -1172,6 +1172,11 @@ out:
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#define PALE_RESET_ENTRY 0x80000000ffffffb0UL
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+bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu)
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+{
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+ return irqchip_in_kernel(vcpu->kcm) == (vcpu->arch.apic != NULL);
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+}
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+
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int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
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{
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struct kvm_vcpu *v;
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diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
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index 3ee008f..be9594a 100644
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--- a/arch/x86/kvm/x86.c
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+++ b/arch/x86/kvm/x86.c
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@@ -3199,6 +3199,9 @@ long kvm_arch_vm_ioctl(struct file *filp,
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r = -EEXIST;
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if (kvm->arch.vpic)
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goto create_irqchip_unlock;
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+ r = -EINVAL;
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+ if (atomic_read(&kvm->online_vcpus))
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+ goto create_irqchip_unlock;
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r = -ENOMEM;
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vpic = kvm_create_pic(kvm);
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if (vpic) {
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@@ -6107,6 +6110,11 @@ void kvm_arch_check_processor_compat(void *rtn)
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kvm_x86_ops->check_processor_compatibility(rtn);
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}
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+bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu)
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+{
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+ return irqchip_in_kernel(vcpu->kvm) == (vcpu->arch.apic != NULL);
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+}
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+
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int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
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{
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struct page *page;
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diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
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index 355e445..759fa26 100644
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--- a/include/linux/kvm_host.h
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+++ b/include/linux/kvm_host.h
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@@ -805,6 +805,13 @@ static inline bool kvm_vcpu_is_bsp(struct kvm_vcpu *vcpu)
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{
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return vcpu->kvm->bsp_vcpu_id == vcpu->vcpu_id;
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}
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+
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+bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu);
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+
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+#else
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+
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+static bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu) { return true; }
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+
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#endif
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#ifdef __KVM_HAVE_DEVICE_ASSIGNMENT
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diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
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index e4431ad..94e148e 100644
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--- a/virt/kvm/kvm_main.c
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+++ b/virt/kvm/kvm_main.c
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@@ -1651,6 +1651,10 @@ static int kvm_vm_ioctl_create_vcpu(struct kvm *kvm, u32 id)
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goto vcpu_destroy;
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mutex_lock(&kvm->lock);
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+ if (!kvm_vcpu_compatible(vcpu)) {
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+ r = -EINVAL;
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+ goto unlock_vcpu_destroy;
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+ }
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if (atomic_read(&kvm->online_vcpus) == KVM_MAX_VCPUS) {
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r = -EINVAL;
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goto unlock_vcpu_destroy;
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--
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1.7.7.6
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@ -352,6 +352,8 @@ CONFIG_BLK_DEV_FD=m
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# CONFIG_BLK_DEV_XD is not set
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# CONFIG_PARIDE is not set
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# CONFIG_BLK_DEV_PCIESSD_MTIP32XX is not set
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CONFIG_BLK_CPQ_DA=m
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CONFIG_BLK_CPQ_CISS_DA=m
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CONFIG_CISS_SCSI_TAPE=y
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19
kernel.spec
19
kernel.spec
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@ -42,7 +42,7 @@ Summary: The Linux kernel
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# When changing real_sublevel below, reset this by hand to 1
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# (or to 0 and then use rpmdev-bumpspec).
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#
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%global baserelease 2
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%global baserelease 1
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%global fedora_build %{baserelease}
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# real_sublevel is the 3.x kernel version we're starting with
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@ -51,7 +51,7 @@ Summary: The Linux kernel
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%define fake_sublevel %(echo $((40 + %{real_sublevel})))
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# Do we have a -stable update to apply?
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%define stable_update 5
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%define stable_update 6
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# Is it a -stable RC?
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%define stable_rc 0
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# Set rpm version accordingly
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@ -676,9 +676,6 @@ Patch21232: rt2x00_fix_MCU_request_failures.patch
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#rhbz 789644
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Patch21237: mcelog-rcu-splat.patch
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#rhbz 728478
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Patch21242: sony-laptop-Enable-keyboard-backlight-by-default.patch
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Patch21300: unhandled-irqs-switch-to-polling.patch
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#rhbz 804957 CVE-2012-1568
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@ -687,9 +684,6 @@ Patch21306: shlib_base_randomize.patch
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#rhbz 807632
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Patch21385: libata-forbid-port-runtime-pm-by-default.patch
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#rhbz 808207 CVE-2012-1601
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Patch21520: KVM-Ensure-all-vcpus-are-consistent-with-in-kernel-i.patch
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#rhbz 808559
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Patch21530: ALSA-hda-realtek-Add-quirk-for-Mac-Pro-5-1-machines.patch
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@ -1277,9 +1271,6 @@ ApplyPatch bcma-brcmsmac-compat.patch
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#rhbz 789644
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ApplyPatch mcelog-rcu-splat.patch
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#rhbz 728478
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ApplyPatch sony-laptop-Enable-keyboard-backlight-by-default.patch
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#rhbz 804957 CVE-2012-1568
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ApplyPatch shlib_base_randomize.patch
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@ -1287,9 +1278,6 @@ ApplyPatch unhandled-irqs-switch-to-polling.patch
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ApplyPatch weird-root-dentry-name-debug.patch
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#rhbz 808207 CVE-2012-1601
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ApplyPatch KVM-Ensure-all-vcpus-are-consistent-with-in-kernel-i.patch
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#rhbz 807632
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ApplyPatch libata-forbid-port-runtime-pm-by-default.patch
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@ -1957,6 +1945,9 @@ fi
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# and build.
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%changelog
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* Mon May 14 2012 Justin M. Forbes <jforbes@redhat.com> 2.6.43.6-1
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- Linux 3.3.6
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* Mon May 07 2012 Mauro Carvalho Chehab <mchehab@redhat.com> 2.6.43.5-2
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- Add patch to fix DVB-S zigzag (rhbz 814404)
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@ -1,44 +0,0 @@
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From 0dbc2bc96b1ec741bdd43451c286ccd45da3310b Mon Sep 17 00:00:00 2001
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From: Josh Boyer <jwboyer@redhat.com>
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Date: Wed, 2 Nov 2011 14:31:59 -0400
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Subject: [PATCH] sony-laptop: Enable keyboard backlight by default
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When the keyboard backlight support was originally added, the commit said
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to default it to on with a 10 second timeout. That actually wasn't the
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case, as the default value is commented out for the kbd_backlight parameter.
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Because it is a static variable, it gets set to 0 by default without some
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other form of initialization.
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However, it seems the function to set the value wasn't actually called
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immediately, so whatever state the keyboard was in initially would remain.
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Then commit df410d522410e67660 was introduced during the 2.6.39 timeframe to
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immediately set whatever value was present (as well as attempt to
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restore/reset the state on module removal or resume). That seems to have
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now forced the light off immediately when the module is loaded unless
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the option kbd_backlight=1 is specified.
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Let's enable it by default again (for the first time). This should solve
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https://bugzilla.redhat.com/show_bug.cgi?id=728478
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Acked-by: Mattia Dongili <malattia@linux.it>
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Signed-off-by: Josh Boyer <jwboyer@redhat.com>
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---
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drivers/platform/x86/sony-laptop.c | 2 +-
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1 files changed, 1 insertions(+), 1 deletions(-)
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diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c
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index c006dee..40c4705 100644
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--- a/drivers/platform/x86/sony-laptop.c
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+++ b/drivers/platform/x86/sony-laptop.c
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@@ -127,7 +127,7 @@ MODULE_PARM_DESC(minor,
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"default is -1 (automatic)");
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#endif
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-static int kbd_backlight; /* = 1 */
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+static int kbd_backlight = 1;
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module_param(kbd_backlight, int, 0444);
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MODULE_PARM_DESC(kbd_backlight,
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"set this to 0 to disable keyboard backlight, "
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--
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1.7.7.6
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