panic: pool_cache_item_magic_check: mbufpl cpu free list modified: item addr 0xfffffd8063d5c600+16 0x0!=0xdeeccd5a313b37c3 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *125363 78694 0 0x14000 0x200 1 softnet 495699 80660 0 0x14000 0x40000200 0 softclock db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic() at panic+0x15c sys/kern/subr_prf.c:207 pool_cache_get(ffffffff826477d8) at pool_cache_get+0x323 pool_cache_item_magic_check sys/kern/subr_pool.c:1789 [inline] pool_cache_get(ffffffff826477d8) at pool_cache_get+0x323 sys/kern/subr_pool.c:1892 pool_get() at pool_get+0x91 sys/kern/subr_pool.c:572 m_copym(fffffd806f70c900,1080,580,2) at m_copym+0x174 m_get sys/kern/uipc_mbuf.c:250 [inline] m_copym(fffffd806f70c900,1080,580,2) at m_copym+0x174 sys/kern/uipc_mbuf.c:667 tcp_output(ffff800000a7c760) at tcp_output+0x151c sys/netinet/tcp_output.c:673 tcp_input(ffff800020a37128,ffff800020a37134,6,2) at tcp_input+0x46e9 sys/netinet/tcp_input.c:2015 ip_deliver(ffff800020a37128,ffff800020a37134,6,2) at ip_deliver+0x353 sys/netinet/ip_input.c:665 ip_ours(ffff800020a37128,ffff800020a37134,ffff800020a104f0,0) at ip_ours+0x412 ip_input_if(ffff800020a37128,ffff800020a37134,4,0,ffff8000001732a8) at ip_input_if+0x6b9 ipv4_input(ffff8000001732a8,fffffd806f468c00) at ipv4_input+0x48 sys/netinet/ip_input.c:215 ether_input(ffff8000001732a8,fffffd806f468c00,0) at ether_input+0x345 sys/net/if_ethersubr.c:458 if_input_process(ffff8000001732a8,ffff800020a37258) at if_input_process+0xfb if_ih_input sys/net/if.c:912 [inline] if_input_process(ffff8000001732a8,ffff800020a37258) at if_input_process+0xfb sys/net/if.c:946 ifiq_process(ffff800000173688) at ifiq_process+0x8b sys/net/ifq.c:608 end trace frame: 0xffff800020a37310, count: 0 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs.