tree d9bf754f850145f0268049a1b291ab385f0005c8
parent cd36ae8761775e78154ba6bd7a3bd2ab538c589f
author Haimin Zhang <tcs_kernel@tencent.com> 1630636626 +0800
committer Paolo Bonzini <pbonzini@redhat.com> 1632321189 -0400

KVM: x86: Handle SRCU initialization failure during page track init

Check the return of init_srcu_struct(), which can fail due to OOM, when
initializing the page track mechanism.  Lack of checking leads to a NULL
pointer deref found by a modified syzkaller.

Reported-by: TCS Robot <tcs_robot@tencent.com>
Signed-off-by: Haimin Zhang <tcs_kernel@tencent.com>
Message-Id: <1630636626-12262-1-git-send-email-tcs_kernel@tencent.com>
[Move the call towards the beginning of kvm_arch_init_vm. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>