> Thanks. Is this the first error printed in the kern.log? Yes. Uptime was about an hour when it occurred. > It could very likely be me, but I don't know how the count would have > errors so late in the process life cycle - do you have > CONFIG_DEBUG_VM_MAPLE_TREE enabled? This would check the count against > the tree on modifications and would narrow down where things could have > gone wrong. Unfortunately, the panicking kernel was compiled without CONFIG_DEBUG_VM_MAPLE_TREE. After the error I recompiled it with that option enabled. This kernel is running for about 3 hours without the error reappearing. Bert Karwatzki