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...andom when just having a shell open and of course there is the usual internet background noise. Two sample traces (on Archlinux, kernel 4.10.5, nftables 0.7): Apr 02 14:20:59 helium kernel: ------------[ cut here ]------------ Apr 02 14:20:59 helium kernel: WARNING: CPU: 0 PID: 0 at net/netfilter/nft_meta.c:163 nft_meta_get_eval+0x40e/0x450 [nft_meta] Apr 02 14:20:59 helium kernel: Modules linked in: nft_counter nft_meta nft_set_hash nft_set_rbtree nf_tables_netdev nf_tables nfnetlink cirrus ttm ppdev drm_kms_helper joydev evdev input_leds mousedev drm pcspkr led_class parport_pc psmouse parport acp...

...com Estimated Hours: 0.0 This was done in the VM. Creating a verdict map that jumps to a chain which you subsequently delete will result in the kernel throwing a BUG message with the following: kernel BUG at net/netfilter/nf_tables_api.c:1014! invalid opcode: 0000 [#1] SMP Modules linked in: nft_meta nft_reject_ipv4 nft_hash nft_rbtree nf_tables_ipv4_ The VM displays no more console output but I believe the kernel panics. Here is the interactive session I used. # nft -i nft> add table filter nft> add chain filter input { type filter hook input priority 0; } nft> add map filter mymap...