Gabor Burjan wrote: > EIP is at destroy_conntrack+0x52/0x127 [nf_conntrack] > >>>nmblookup >>>cat /proc/net/ip_conntrack >>> >>>sleep 3 >>> >>>rmmod nf_conntrack_netbios_ns Thanks for the report and good testcase, the crash can only happen with a sleep of >= 3s after the last nmblookup packet was sent. Can you try if this patch fixes it please?