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KVM: Prevent trace call into unloaded module text

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Add marker_synchronize_unregister() before module unloading.
This prevents possible trace calls into unloaded module text.

Signed-off-by: Wu Fengguang <wfg@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Wu Fengguang 2008-11-26 19:59:06 +08:00 committed by Avi Kivity
parent 6692cef30b
commit b82091824e
1 changed files with 1 additions and 0 deletions
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virt/kvm/kvm_trace.c
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@ -252,6 +252,7 @@ void kvm_trace_cleanup(void)
struct kvm_trace_probe *p = &kvm_trace_probes[i]; struct kvm_trace_probe *p = &kvm_trace_probes[i];
marker_probe_unregister(p->name, p->probe_func, p); marker_probe_unregister(p->name, p->probe_func, p);
} }
marker_synchronize_unregister();
relay_close(kt->rchan); relay_close(kt->rchan);
debugfs_remove(kt->lost_file); debugfs_remove(kt->lost_file);