On Oct29 14:12, Kirill A. Shutemov wrote: > I've noticed message on kvm exit: > > Warning: serial8250__exit failed. > > kvm tool is not able to remove ioport range which was added previously. > > The issue is caused by bug in rbtree-interval. Search algorithm in > rb_int_search_single() expects correct value of max_high. But the tree > can contain leaf nodes, which never were updated by propagate_callback(). > For this kind of nodes high_max will be 0 and we will not be able to > find and remove them. > > Let's initialize max_high on RB_INT_INIT() time. > > Fixing this bug makes other bug visible: propagate_callback() can be > called for empty tree: node == NULL. The callback is not ready for empty > tree. Let's fix that as well. > > Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> I had the same issue but didn't found the time to fix it. Applying the patch fixes the problem. Tested-by: William Dauchy <william@xxxxxxxxx> Thanks, -- William
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