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| author | Coleman Dietsch <dietschc@csp.edu> | 2022-08-08 22:06:06 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2022-08-10 22:08:25 +0300 |
| commit | af735db31285fa699384c649be72a9f32ecbb665 (patch) | |
| tree | 8ddb167c0f75068d5ba37277a00f5a0f9de683a9 /.clang-format | |
| parent | 0c29397ac1fdd64ae59941a477511a05e61a4754 (diff) | |
| download | linux-af735db31285fa699384c649be72a9f32ecbb665.tar.xz | |
KVM: x86/xen: Initialize Xen timer only once
Add a check for existing xen timers before initializing a new one.
Currently kvm_xen_init_timer() is called on every
KVM_XEN_VCPU_ATTR_TYPE_TIMER, which is causing the following ODEBUG
crash when vcpu->arch.xen.timer is already set.
ODEBUG: init active (active state 0)
object type: hrtimer hint: xen_timer_callbac0
RIP: 0010:debug_print_object+0x16e/0x250 lib/debugobjects.c:502
Call Trace:
__debug_object_init
debug_hrtimer_init
debug_init
hrtimer_init
kvm_xen_init_timer
kvm_xen_vcpu_set_attr
kvm_arch_vcpu_ioctl
kvm_vcpu_ioctl
vfs_ioctl
Fixes: 536395260582 ("KVM: x86/xen: handle PV timers oneshot mode")
Cc: stable@vger.kernel.org
Link: https://syzkaller.appspot.com/bug?id=8234a9dfd3aafbf092cc5a7cd9842e3ebc45fc42
Reported-by: syzbot+e54f930ed78eb0f85281@syzkaller.appspotmail.com
Signed-off-by: Coleman Dietsch <dietschc@csp.edu>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20220808190607.323899-2-dietschc@csp.edu>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to '.clang-format')
0 files changed, 0 insertions, 0 deletions