panic: syn_cache_insert: bucketoverflow: impossible Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 321067 58652 0 0x2 0x4000000 0 syz-fuzzer *463828 85132 0 0x14000 0x200 1 softnet db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821e4f24) at panic+0x15c sys/kern/subr_prf.c:207 syn_cache_insert(fffffd80648e9d70,ffff800000a0a660) at syn_cache_insert+0x9d4 sys/netinet/tcp_input.c:3235 syn_cache_add(ffff800020e392c0,ffff800020e39270,fffffd807f01ecd8,28,fffffd806490e030,fffffd807f01ec00) at syn_cache_add+0x6e9 tcpstat_inc sys/netinet/tcp_var.h:645 [inline] syn_cache_add(ffff800020e392c0,ffff800020e39270,fffffd807f01ecd8,28,fffffd806490e030,fffffd807f01ec00) at syn_cache_add+0x6e9 sys/netinet/tcp_input.c:3871 tcp_input(ffff800020e395d8,ffff800020e395e4,6,18) at tcp_input+0x3c67 sys/netinet/tcp_input.c:830 ip_deliver(ffff800020e395d8,ffff800020e395e4,6,18) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip6_input_if(ffff800020e395d8,ffff800020e395e4,29,0,ffff80000067a800) at ip6_input_if+0x17e1 ip6_ours sys/netinet6/ip6_input.c:538 [inline] ip6_input_if(ffff800020e395d8,ffff800020e395e4,29,0,ffff80000067a800) at ip6_input_if+0x17e1 sys/netinet6/ip6_input.c:471 ipv6_input(ffff80000067a800,fffffd807f01ec00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff80000067a800,fffffd807f01ec00,18) at if_input_local+0x121 sys/net/if.c:781 loinput(ffff80000067a800,fffffd807f01ec00,0) at loinput+0x4f sys/net/if_loop.c:239 if_input_process(ffff80000067a800,ffff800020e39748) at if_input_process+0x10b if_ih_input sys/net/if.c:910 [inline] if_input_process(ffff80000067a800,ffff800020e39748) at if_input_process+0x10b sys/net/if.c:944 ifiq_process(ffff80000067abf8) at ifiq_process+0x80 sys/net/ifq.c:646 taskq_thread(ffff80000002b080) at taskq_thread+0x9c sys/kern/kern_task.c:369 end trace frame: 0x0, count: 2 https://www.openbsd.org/ddb.html describes the minimum info required in bug reports. Insufficient info makes it difficult to find and fix bugs. ddb{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic syn_cache_insert: bucketoverflow: impossible ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821e4f24) at panic+0x15c sys/kern/subr_prf.c:207 syn_cache_insert(fffffd80648e9d70,ffff800000a0a660) at syn_cache_insert+0x9d4 sys/netinet/tcp_input.c:3235 syn_cache_add(ffff800020e392c0,ffff800020e39270,fffffd807f01ecd8,28,fffffd806490e030,fffffd807f01ec00) at syn_cache_add+0x6e9 tcpstat_inc sys/netinet/tcp_var.h:645 [inline] syn_cache_add(ffff800020e392c0,ffff800020e39270,fffffd807f01ecd8,28,fffffd806490e030,fffffd807f01ec00) at syn_cache_add+0x6e9 sys/netinet/tcp_input.c:3871 tcp_input(ffff800020e395d8,ffff800020e395e4,6,18) at tcp_input+0x3c67 sys/netinet/tcp_input.c:830 ip_deliver(ffff800020e395d8,ffff800020e395e4,6,18) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip6_input_if(ffff800020e395d8,ffff800020e395e4,29,0,ffff80000067a800) at ip6_input_if+0x17e1 ip6_ours sys/netinet6/ip6_input.c:538 [inline] ip6_input_if(ffff800020e395d8,ffff800020e395e4,29,0,ffff80000067a800) at ip6_input_if+0x17e1 sys/netinet6/ip6_input.c:471 ipv6_input(ffff80000067a800,fffffd807f01ec00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff80000067a800,fffffd807f01ec00,18) at if_input_local+0x121 sys/net/if.c:781 loinput(ffff80000067a800,fffffd807f01ec00,0) at loinput+0x4f sys/net/if_loop.c:239 if_input_process(ffff80000067a800,ffff800020e39748) at if_input_process+0x10b if_ih_input sys/net/if.c:910 [inline] if_input_process(ffff80000067a800,ffff800020e39748) at if_input_process+0x10b sys/net/if.c:944 ifiq_process(ffff80000067abf8) at ifiq_process+0x80 sys/net/ifq.c:646 taskq_thread(ffff80000002b080) at taskq_thread+0x9c sys/kern/kern_task.c:369 end trace frame: 0x0, count: -13 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800020e38e40 rbx 0xffff800020e38ef0 rdx 0x8b rcx 0x2 rax 0x1 r8 0xffffffff81f3c28f kprintf+0x16f r9 0x1 r10 0x2 r11 0x18dc92162de4826a r12 0x3000000008 r13 0xffff800020e38e50 r14 0x100 r15 0x1 rip 0xffffffff8149f5a8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800020e38e30 ss 0x10 db_enter+0x18: addq $0x8,%rsp ddb{1}> show proc PROC (softnet) pid=463828 stat=onproc flags process=14000 proc=200 pri=32, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff800020e18000,0xffff800020e18760 process=0xffff800020e1a7b0 user=0xffff800020e34000, vmspace=0xffffffff8267e568 estcpu=0, cpticks=0, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 90537 16184 79932 0 2 0 syz-executor.0 90537 451398 79932 0 3 0x4000080 netcon2 syz-executor.0 90537 259753 79932 0 3 0x4000080 fsleep syz-executor.0 64105 182713 0 0 3 0x14200 bored sosplice 47705 264443 0 0 3 0x14280 nfsidl nfsio 54797 262178 0 0 3 0x14280 nfsidl nfsio 75681 281051 0 0 3 0x14280 nfsidl nfsio 51305 176010 0 0 3 0x14280 nfsidl nfsio 81581 193193 0 0 3 0x14280 nfsidl nfsio 64931 73677 0 0 3 0x14280 nfsidl nfsio 14168 517707 0 0 3 0x14280 nfsidl nfsio 7833 433718 0 0 3 0x14280 nfsidl nfsio 52059 427945 0 0 3 0x14280 nfsidl nfsio 25008 241272 0 0 3 0x14280 nfsidl nfsio 17915 335644 0 0 3 0x14280 nfsidl nfsio 32835 390148 0 0 3 0x14280 nfsidl nfsio 34210 436828 0 0 3 0x14280 nfsidl nfsio 77766 216686 0 0 3 0x14280 nfsidl nfsio 20694 515849 0 0 3 0x14280 nfsidl nfsio 62862 415920 0 0 3 0x14280 nfsidl nfsio 51598 370542 0 0 3 0x14280 nfsidl nfsio 83089 72176 0 0 3 0x14280 nfsidl nfsio 54899 10543 0 0 3 0x14280 nfsidl nfsio 82359 421897 0 0 3 0x14280 nfsidl nfsio 79932 227668 58652 0 3 0x82 nanosleep syz-executor.0 97015 359264 58652 0 3 0x82 piperd syz-executor.1 58652 325179 38030 0 3 0x82 thrsleep syz-fuzzer 58652 42442 38030 0 3 0x4000082 nanosleep syz-fuzzer 58652 209230 38030 0 3 0x4000082 thrsleep syz-fuzzer 58652 497890 38030 0 3 0x4000082 thrsleep syz-fuzzer 58652 283946 38030 0 3 0x4000082 thrsleep syz-fuzzer 58652 321067 38030 0 7 0x4000002 syz-fuzzer 58652 380471 38030 0 3 0x4000082 thrsleep syz-fuzzer 58652 57381 38030 0 3 0x4000082 thrsleep syz-fuzzer 58652 155589 38030 0 3 0x4000082 kqread syz-fuzzer 58652 486167 38030 0 3 0x4000082 thrsleep syz-fuzzer 38030 284585 5492 0 3 0x10008a pause ksh 5492 29123 55642 0 3 0x92 select sshd 42476 409595 1 0 3 0x100083 ttyin getty 55642 494917 1 0 3 0x80 select sshd 68235 380513 96091 74 3 0x100092 bpf pflogd 96091 39359 1 0 3 0x80 netio pflogd 510 210331 82658 73 3 0x100090 kqread syslogd 82658 198675 1 0 3 0x100082 netio syslogd 80350 154688 1 77 3 0x100090 poll dhclient 12634 53418 1 0 3 0x80 poll dhclient 20930 342596 0 0 3 0x14200 bored smr 35608 15628 0 0 2 0x14200 zerothread 72992 25706 0 0 3 0x14200 aiodoned aiodoned 22941 73654 0 0 3 0x14200 syncer update 24391 415687 0 0 3 0x14200 cleaner cleaner 74486 294882 0 0 3 0x14200 reaper reaper 41672 195167 0 0 3 0x14200 pgdaemon pagedaemon 13075 418169 0 0 3 0x14200 bored crynlk 30850 194665 0 0 3 0x14200 bored crypto 13592 432590 0 0 3 0x40014200 acpi0 acpi0 69785 260561 0 0 3 0x40014200 idle1 *85132 463828 0 0 7 0x14200 softnet 54099 225100 0 0 3 0x14200 bored systqmp 88535 357013 0 0 3 0x14200 bored systq 80190 519763 0 0 3 0x40014200 bored softclock 77205 456002 0 0 3 0x40014200 idle0 1 263664 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 85132 (softnet) thread 0xffff800020e184e0 (463828) exclusive rwlock netlock r = 0 (0xffffffff824b7688) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 if_input_process+0x85 sys/net/if.c:943 #2 ifiq_process+0x80 sys/net/ifq.c:646 #3 taskq_thread+0x9c sys/kern/kern_task.c:369 #4 proc_trampoline+0x1c shared rwlock softnet r = 0 (0xffff80000002b0e0) #0 witness_lock+0x4c7 stacktrace_save sys/sys/stacktrace.h:36 [inline] #0 witness_lock+0x4c7 sys/kern/subr_witness.c:1164 #1 taskq_thread+0x8f sys/kern/kern_task.c:368 #2 proc_trampoline+0x1c ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9490 6474K 7630K 78643K 27304 0 pcb 13 8K 8K 78643K 82 0 rtable 103 3K 3K 78643K 270 0 ifaddr 53 12K 13K 78643K 79 0 sysctl 2 0K 0K 78643K 2 0 counters 43 33K 34K 78643K 51 0 ioctlops 0 0K 4K 78643K 1511 0 iov 0 0K 16K 78643K 3512 0 mount 1 1K 1K 78643K 1 0 vnodes 1223 77K 77K 78643K 5491 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 55 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 0K 78643K 472 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1824 197K 290K 78643K 13058 0 file desc 5 13K 25K 78643K 7731 0 sigio 0 0K 0K 78643K 32 0 proc 77 64K 84K 78643K 607 0 subproc 32 2K 2K 78643K 51 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 26 0 in_multi 47 2K 3K 78643K 79 0 ether_multi 1 0K 0K 78643K 10 0 mrt 0 0K 0K 78643K 3 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 49 228K 228K 78643K 49 0 exec 0 0K 1K 78643K 312 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 124 39K 40K 78643K 19766 0 UVM aobj 130 4K 4K 78643K 138 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 35 0 NDP 7 0K 0K 78643K 17 0 temp 113 3046K 3110K 78643K 28598 0 kqueue 3 4K 14K 78643K 18 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 9 0 4 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 25 0 23 1 0 1 1 0 8 0 rtentry 112 60 0 17 2 0 2 2 0 8 0 unpcb 120 2508 0 2498 1 0 1 1 0 8 0 syncache 264 5 0 4 2 1 1 1 0 8 0 tcpcb 544 490 0 484 1 0 1 1 0 8 0 inpcb 280 1171 0 1162 5 4 1 2 0 8 0 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 9 0 3 1 0 1 1 0 8 0 pkpcb 40 6 0 6 2 1 1 1 0 8 1 pffrag 232 2 0 2 1 0 1 1 0 482 1 pffrnode 88 2 0 2 1 0 1 1 0 8 1 pffrent 40 6 0 6 1 0 1 1 0 8 1 pfosfp 40 846 0 423 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfstitem 24 362 0 47 2 0 2 2 0 8 0 pfstkey 112 362 0 47 10 1 9 9 0 8 0 pfstate 328 362 0 47 30 3 27 27 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 238 0 46 12 0 12 12 0 8 0 art_table 32 239 0 46 2 0 2 2 0 8 0 art_node 16 59 0 20 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 6 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 468 0 458 1 0 1 1 0 8 0 shmpl 112 136 0 8 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 9264 0 7864 90 2 88 89 0 8 0 ffsino 272 9264 0 7864 94 0 94 94 0 8 0 nchpl 144 21286 0 19692 60 0 60 60 0 8 0 uvmvnodes 72 5926 0 0 108 0 108 108 0 8 0 vnodes 208 5926 0 0 312 0 312 312 0 8 0 namei 1024 51180 0 51180 1 0 1 1 0 8 1 percpumem 16 36 0 4 1 0 1 1 0 8 0 vcpupl 1984 2 0 0 1 0 1 1 0 8 0 vmpool 560 4 0 2 1 0 1 1 0 8 0 scxspl 192 51416 0 51416 8 7 1 7 0 8 1 plimitpl 152 51 0 43 1 0 1 1 0 8 0 sigapl 424 7964 0 7912 6 0 6 6 0 8 0 futexpl 56 62310 0 62309 1 0 1 1 0 8 0 knotepl 112 91 0 72 1 0 1 1 0 8 0 kqueuepl 144 104 0 101 1 0 1 1 0 8 0 pipelkpl 48 537 0 527 1 0 1 1 0 8 0 pipepl 120 1074 0 1055 2 1 1 2 0 8 0 fdescpl 496 7928 0 7912 3 0 3 3 0 8 0 filepl 152 26517 0 26413 9 4 5 7 0 8 1 lockfpl 104 346 0 345 1 0 1 1 0 8 0 lockfspl 48 137 0 136 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 62 0 51 1 0 1 1 0 8 0 ucredpl 96 4261 0 4251 1 0 1 1 0 8 0 zombiepl 144 7912 0 7912 1 0 1 1 0 8 1 processpl 984 7964 0 7912 9 2 7 7 0 8 0 procpl 624 19054 0 18991 8 2 6 6 0 8 1 sosppl 128 1 0 1 1 1 0 1 0 8 0 sockpl 400 3711 0 3690 33 29 4 4 0 8 1 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 33 0 0 3 0 3 3 0 8 0 mcl2k2 2112 11 0 0 1 0 1 1 0 8 0 mcl2k 2048 228 0 0 18 5 13 18 0 8 0 mtagpl 80 15 0 0 1 0 1 1 0 8 0 mbufpl 256 274 0 0 10 0 10 10 0 8 0 bufpl 280 11279 0 5035 447 0 447 447 0 8 0 anonpl 16 480896 0 466267 69 3 66 67 0 124 7 amapchunkpl 152 31014 0 30879 12 2 10 11 0 158 3 amappl16 192 26090 0 25308 41 1 40 40 0 8 0 amappl15 184 1 0 0 1 0 1 1 0 8 0 amappl14 176 7250 0 7242 1 0 1 1 0 8 0 amappl13 168 35 0 32 1 0 1 1 0 8 0 amappl12 160 7223 0 7221 2 1 1 1 0 8 0 amappl11 152 59 0 43 1 0 1 1 0 8 0 amappl10 144 18 0 12 1 0 1 1 0 8 0 amappl9 136 390 0 389 1 0 1 1 0 8 0 amappl8 128 444 0 406 2 0 2 2 0 8 0 amappl7 120 134 0 119 1 0 1 1 0 8 0 amappl6 112 24 0 20 1 0 1 1 0 8 0 amappl5 104 7714 0 7697 1 0 1 1 0 8 0 amappl4 96 629 0 601 1 0 1 1 0 8 0 amappl3 88 397 0 392 1 0 1 1 0 8 0 amappl2 80 69481 0 69410 2 0 2 2 0 8 0 amappl1 72 142513 0 142060 22 12 10 18 0 8 0 amappl 80 19214 0 19169 2 0 2 2 0 84 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma256 256 6 0 6 1 1 0 1 0 8 0 dma128 128 253 0 253 1 1 0 1 0 8 0 dma64 64 6 0 6 1 1 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 18 0 17 1 0 1 1 0 8 0 aobjpl 64 137 0 8 3 0 3 3 0 8 0 uaddrrnd 24 7932 0 7914 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 7932 0 7914 1 0 1 1 0 8 0 vmmpekpl 168 45203 0 45168 2 0 2 2 0 8 0 vmmpepl 168 898079 0 896124 118 32 86 111 0 357 1 vmsppl 368 7931 0 7914 2 0 2 2 0 8 0 pdppl 4096 15872 0 15830 6 0 6 6 0 8 0 pvpl 32 1414013 0 1396104 243 78 165 166 0 265 20 pmappl 232 7931 0 7914 2 0 2 2 0 8 0 extentpl 40 53 0 36 1 0 1 1 0 8 0 phpool 112 289 0 41 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff8250aff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 end of kernel end trace frame: 0xc00260fa40, count: 12 ddb{0}> trace x86_ipi_db(ffffffff8250aff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:352 x86_ipi_handler() at x86_ipi_handler+0xc6 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 end of kernel end trace frame: 0xc00260fa40, count: -3 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x18: addq $0x8,%rsp db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821e4f24) at panic+0x15c sys/kern/subr_prf.c:207 syn_cache_insert(fffffd80648e9d70,ffff800000a0a660) at syn_cache_insert+0x9d4 sys/netinet/tcp_input.c:3235 syn_cache_add(ffff800020e392c0,ffff800020e39270,fffffd807f01ecd8,28,fffffd806490e030,fffffd807f01ec00) at syn_cache_add+0x6e9 tcpstat_inc sys/netinet/tcp_var.h:645 [inline] syn_cache_add(ffff800020e392c0,ffff800020e39270,fffffd807f01ecd8,28,fffffd806490e030,fffffd807f01ec00) at syn_cache_add+0x6e9 sys/netinet/tcp_input.c:3871 tcp_input(ffff800020e395d8,ffff800020e395e4,6,18) at tcp_input+0x3c67 sys/netinet/tcp_input.c:830 ip_deliver(ffff800020e395d8,ffff800020e395e4,6,18) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip6_input_if(ffff800020e395d8,ffff800020e395e4,29,0,ffff80000067a800) at ip6_input_if+0x17e1 ip6_ours sys/netinet6/ip6_input.c:538 [inline] ip6_input_if(ffff800020e395d8,ffff800020e395e4,29,0,ffff80000067a800) at ip6_input_if+0x17e1 sys/netinet6/ip6_input.c:471 ipv6_input(ffff80000067a800,fffffd807f01ec00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff80000067a800,fffffd807f01ec00,18) at if_input_local+0x121 sys/net/if.c:781 loinput(ffff80000067a800,fffffd807f01ec00,0) at loinput+0x4f sys/net/if_loop.c:239 if_input_process(ffff80000067a800,ffff800020e39748) at if_input_process+0x10b if_ih_input sys/net/if.c:910 [inline] if_input_process(ffff80000067a800,ffff800020e39748) at if_input_process+0x10b sys/net/if.c:944 ifiq_process(ffff80000067abf8) at ifiq_process+0x80 sys/net/ifq.c:646 taskq_thread(ffff80000002b080) at taskq_thread+0x9c sys/kern/kern_task.c:369 end trace frame: 0x0, count: 2 ddb{1}> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:398 panic(ffffffff821e4f24) at panic+0x15c sys/kern/subr_prf.c:207 syn_cache_insert(fffffd80648e9d70,ffff800000a0a660) at syn_cache_insert+0x9d4 sys/netinet/tcp_input.c:3235 syn_cache_add(ffff800020e392c0,ffff800020e39270,fffffd807f01ecd8,28,fffffd806490e030,fffffd807f01ec00) at syn_cache_add+0x6e9 tcpstat_inc sys/netinet/tcp_var.h:645 [inline] syn_cache_add(ffff800020e392c0,ffff800020e39270,fffffd807f01ecd8,28,fffffd806490e030,fffffd807f01ec00) at syn_cache_add+0x6e9 sys/netinet/tcp_input.c:3871 tcp_input(ffff800020e395d8,ffff800020e395e4,6,18) at tcp_input+0x3c67 sys/netinet/tcp_input.c:830 ip_deliver(ffff800020e395d8,ffff800020e395e4,6,18) at ip_deliver+0x353 sys/netinet/ip_input.c:668 ip6_input_if(ffff800020e395d8,ffff800020e395e4,29,0,ffff80000067a800) at ip6_input_if+0x17e1 ip6_ours sys/netinet6/ip6_input.c:538 [inline] ip6_input_if(ffff800020e395d8,ffff800020e395e4,29,0,ffff80000067a800) at ip6_input_if+0x17e1 sys/netinet6/ip6_input.c:471 ipv6_input(ffff80000067a800,fffffd807f01ec00) at ipv6_input+0x48 sys/netinet6/ip6_input.c:171 if_input_local(ffff80000067a800,fffffd807f01ec00,18) at if_input_local+0x121 sys/net/if.c:781 loinput(ffff80000067a800,fffffd807f01ec00,0) at loinput+0x4f sys/net/if_loop.c:239 if_input_process(ffff80000067a800,ffff800020e39748) at if_input_process+0x10b if_ih_input sys/net/if.c:910 [inline] if_input_process(ffff80000067a800,ffff800020e39748) at if_input_process+0x10b sys/net/if.c:944 ifiq_process(ffff80000067abf8) at ifiq_process+0x80 sys/net/ifq.c:646 taskq_thread(ffff80000002b080) at taskq_thread+0x9c sys/kern/kern_task.c:369 end trace frame: 0x0, count: -13