This is a note to let you know that I've just added the patch titled
MIPS: KVM: Uninit VCPU in vcpu_create error path
to the 4.3-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mips-kvm-uninit-vcpu-in-vcpu_create-error-path.patch
and it can be found in the queue-4.3 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 585bb8f9a5e592f2ce7abbe5ed3112d5438d2754 Mon Sep 17 00:00:00 2001
From: James Hogan <[email protected]>
Date: Wed, 11 Nov 2015 14:21:20 +0000
Subject: MIPS: KVM: Uninit VCPU in vcpu_create error path
From: James Hogan <[email protected]>
commit 585bb8f9a5e592f2ce7abbe5ed3112d5438d2754 upstream.
If either of the memory allocations in kvm_arch_vcpu_create() fail, the
vcpu which has been allocated and kvm_vcpu_init'd doesn't get uninit'd
in the error handling path. Add a call to kvm_vcpu_uninit() to fix this.
Fixes: 669e846e6c4e ("KVM/MIPS32: MIPS arch specific APIs for KVM")
Signed-off-by: James Hogan <[email protected]>
Cc: Ralf Baechle <[email protected]>
Cc: Paolo Bonzini <[email protected]>
Cc: Gleb Natapov <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Paolo Bonzini <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
arch/mips/kvm/mips.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/arch/mips/kvm/mips.c
+++ b/arch/mips/kvm/mips.c
@@ -279,7 +279,7 @@ struct kvm_vcpu *kvm_arch_vcpu_create(st
if (!gebase) {
err = -ENOMEM;
- goto out_free_cpu;
+ goto out_uninit_cpu;
}
kvm_debug("Allocated %d bytes for KVM Exception Handlers @ %p\n",
ALIGN(size, PAGE_SIZE), gebase);
@@ -343,6 +343,9 @@ struct kvm_vcpu *kvm_arch_vcpu_create(st
out_free_gebase:
kfree(gebase);
+out_uninit_cpu:
+ kvm_vcpu_uninit(vcpu);
+
out_free_cpu:
kfree(vcpu);
Patches currently in stable-queue which might be from [email protected] are
queue-4.3/mips-kvm-fix-cache-immediate-offset-sign-extension.patch
queue-4.3/mips-kvm-fix-asid-restoration-logic.patch
queue-4.3/mips-cdmm-add-builtin_mips_cdmm_driver-macro.patch
queue-4.3/mips-kvm-uninit-vcpu-in-vcpu_create-error-path.patch
--
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