uvm_fault(0xfffffd805b0a0300, 0x4, 0, 1) -> e kernel: page fault trap, code=0 Stopped at igmp_leavegroup+0x80: movl 0x4(%rax),%r12d TID PID UID PRFLAGS PFLAGS CPU COMMAND 253516 29017 0 0x14000 0x200 0 reaper igmp_leavegroup(ffff800000cf2d80) at igmp_leavegroup+0x80 sys/netinet/igmp.c:521 in_delmulti(ffff800000cf2d80) at in_delmulti+0xb7 sys/netinet/in.c:917 ip_freemoptions(ffff800000c1c5f0) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1764 in_pcbdetach(fffffd806f67fe40) at in_pcbdetach+0xf3 sys/netinet/in_pcb.c:580 udp_detach(fffffd806d4965b8) at udp_detach+0x3b sys/netinet/udp_usrreq.c:1249 soclose(fffffd806d4965b8,0) at soclose+0x255 sys/kern/uipc_socket.c:351 soo_close(fffffd8064b829a0,ffff8000260f2fc0) at soo_close+0x40 fdrop(fffffd8064b829a0,ffff8000260f2fc0) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd8064b829a0,ffff8000260f2fc0) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff8000260f2fc0) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff8000260f2fc0,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202 sys_exit(ffff8000260f2fc0,ffff800024e8a210,ffff800024e8a270) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800024e8a2e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800024e8a2e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcbf50, count: 1 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 *cpu1: uvm_fault(0xfffffd805b0a0300, 0x4, 0, 1) -> e ddb{1}> trace igmp_leavegroup(ffff800000cf2d80) at igmp_leavegroup+0x80 sys/netinet/igmp.c:521 in_delmulti(ffff800000cf2d80) at in_delmulti+0xb7 sys/netinet/in.c:917 ip_freemoptions(ffff800000c1c5f0) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1764 in_pcbdetach(fffffd806f67fe40) at in_pcbdetach+0xf3 sys/netinet/in_pcb.c:580 udp_detach(fffffd806d4965b8) at udp_detach+0x3b sys/netinet/udp_usrreq.c:1249 soclose(fffffd806d4965b8,0) at soclose+0x255 sys/kern/uipc_socket.c:351 soo_close(fffffd8064b829a0,ffff8000260f2fc0) at soo_close+0x40 fdrop(fffffd8064b829a0,ffff8000260f2fc0) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd8064b829a0,ffff8000260f2fc0) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff8000260f2fc0) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff8000260f2fc0,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202 sys_exit(ffff8000260f2fc0,ffff800024e8a210,ffff800024e8a270) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800024e8a2e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800024e8a2e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcbf50, count: -14 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800024e89e90 rbx 0 rdx 0 rcx 0x1 rax 0 r8 0 r9 0x1 r10 0x35e2752b52527ac4 r11 0xbcc2e41b754b94eb r12 0 r13 0x3 r14 0xffff800000689000 r15 0xffff800000cf2d80 rip 0xffffffff81ffc9f0 igmp_leavegroup+0x80 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800024e89e60 ss 0x10 igmp_leavegroup+0x80: movl 0x4(%rax),%r12d ddb{1}> show proc PROC (syz-executor.5) pid=352657 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=83, nice=20 forw=0xffffffffffffffff, list=0xffff8000260f3260,0xffff80002e401a50 process=0xffff8000ffff8430 user=0xffff800024e85000, vmspace=0xfffffd805b0a0300 estcpu=36, cpticks=2, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 63663 486192 54138 0 2 0 syz-executor.6 63663 431897 54138 0 2 0x4000000 syz-executor.6 10265 420925 51135 0 2 0 syz-executor.4 10265 31704 51135 0 2 0x4000000 syz-executor.4 65069 124959 7254 0 3 0x3000 suspend syz-executor.7 65069 229548 7254 0 2 0x4081080 syz-executor.7 287 179490 73272 0 2 0 syz-executor.3 287 93620 73272 0 3 0x4000080 fsleep syz-executor.3 76217 483008 69001 0 3 0x80 nanoslp syz-executor.2 76217 379712 69001 0 3 0x4000080 fsleep syz-executor.2 60897 230524 29054 0 2 0x2 syz-executor.0 62355 397476 0 0 3 0x14200 acct acct 73272 310284 29054 0 3 0x82 nanoslp syz-executor.3 54138 116635 29054 0 3 0x82 nanoslp syz-executor.6 51135 340874 29054 0 3 0x82 nanoslp syz-executor.4 17421 45521 0 0 3 0x14200 bored sosplice 69001 182769 29054 0 3 0x82 nanoslp syz-executor.2 7254 363497 29054 0 3 0x82 nanoslp syz-executor.7 7307 296952 29054 0 2 0x2 syz-executor.1 67164 164818 0 0 3 0x14280 nfsidl nfsio 85634 277602 0 0 3 0x14280 nfsidl nfsio 58679 355113 0 0 3 0x14280 nfsidl nfsio 40787 194779 0 0 3 0x14280 nfsidl nfsio 87775 511132 0 0 3 0x14280 nfsidl nfsio 11808 491717 0 0 3 0x14280 nfsidl nfsio 26663 397550 0 0 3 0x14280 nfsidl nfsio 17645 125835 0 0 3 0x14280 nfsidl nfsio 16314 167924 0 0 3 0x14280 nfsidl nfsio 35383 392735 0 0 3 0x14280 nfsidl nfsio 32024 208045 0 0 3 0x14280 nfsidl nfsio 21585 185587 0 0 3 0x14280 nfsidl nfsio 38243 158212 0 0 3 0x14280 nfsidl nfsio 81484 381504 0 0 3 0x14280 nfsidl nfsio 56659 78221 0 0 3 0x14280 nfsidl nfsio 15026 147320 0 0 3 0x14280 nfsidl nfsio 5564 223705 0 0 3 0x14280 nfsidl nfsio 55225 226693 0 0 3 0x14280 nfsidl nfsio 59827 105776 0 0 3 0x14280 nfsidl nfsio 34964 143481 0 0 3 0x14280 nfsidl nfsio 24886 442923 29054 0 3 0x82 nanoslp syz-executor.5 29054 229738 58143 0 3 0x82 thrsleep syz-fuzzer 29054 482715 58143 0 3 0x4000082 nanoslp syz-fuzzer 29054 296049 58143 0 3 0x4000082 thrsleep syz-fuzzer 29054 227553 58143 0 3 0x4000082 thrsleep syz-fuzzer 29054 424726 58143 0 3 0x4000082 thrsleep syz-fuzzer 29054 105880 58143 0 3 0x4000082 thrsleep syz-fuzzer 29054 58095 58143 0 3 0x4000082 thrsleep syz-fuzzer 29054 15314 58143 0 3 0x4000082 kqread syz-fuzzer 29054 453023 58143 0 3 0x4000082 thrsleep syz-fuzzer 29054 428556 58143 0 3 0x4000082 thrsleep syz-fuzzer 29054 390385 58143 0 3 0x4000082 thrsleep syz-fuzzer 58143 98683 69527 0 3 0x10008a sigsusp ksh 69527 14056 68615 0 3 0x9a kqread sshd 20980 410603 1 0 3 0x100083 ttyopn getty 68615 392611 1 0 3 0x88 kqread sshd 69430 18830 38927 74 3 0x1100092 bpf pflogd 38927 451251 1 0 3 0x80 netio pflogd 44577 60360 27077 73 3 0x1100090 kqread syslogd 27077 152894 1 0 3 0x100082 netio syslogd 28619 389238 1 0 3 0x100080 kqread resolvd 63262 452472 19449 77 3 0x100092 kqread dhcpleased 53942 219284 19449 77 3 0x100092 kqread dhcpleased 19449 307462 1 0 3 0x80 kqread dhcpleased 23650 511483 0 0 3 0x14200 bored smr 55858 235462 0 0 2 0x14200 zerothread 84399 271849 0 0 3 0x14200 aiodoned aiodoned 19991 237062 0 0 3 0x14200 syncer update 49767 93739 0 0 3 0x14200 cleaner cleaner 29017 253516 0 0 7 0x14200 reaper 4776 426994 0 0 3 0x14200 pgdaemon pagedaemon 99283 98020 0 0 3 0x14200 bored viomb 76877 397408 0 0 3 0x40014200 acpi0 acpi0 83318 108453 0 0 3 0x40014200 idle1 53927 499115 0 0 3 0x14200 bored softnet 18582 221407 0 0 3 0x14200 bored systqmp 67333 392061 0 0 3 0x14200 bored systq 73815 410293 0 0 3 0x40014200 bored softclock 18994 102049 0 0 3 0x40014200 idle0 1 95762 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10201 6556K 6873K 78643K 20807 0 pcb 13 16K 18K 78643K 483 0 rtable 226 9K 10K 78643K 1098 0 ifaddr 89 20K 20K 78643K 494 0 sysctl 2 0K 0K 78643K 2 0 counters 56 35K 36K 78643K 208 0 ioctlops 0 0K 4K 78643K 3511 0 iov 0 0K 16K 78643K 347 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1328 83K 84K 78643K 4452 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 40 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 131 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 16 57K 89K 78643K 5037 0 sigio 0 0K 0K 78643K 89 0 proc 89 88K 112K 78643K 1010 0 subproc 104 6K 6K 78643K 277 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 2 0K 0K 78643K 1182 0 in_multi 98 6K 6K 78643K 654 0 ether_multi 1 0K 0K 78643K 43 0 mrt 1 0K 0K 78643K 7 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 163 731K 731K 78643K 163 0 exec 0 0K 2K 78643K 1244 0 tdb 3 0K 0K 78643K 3 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 449 435K 436K 78643K 64850 0 UVM aobj 96 7K 7K 78643K 107 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 207 0 NDP 12 0K 1K 78643K 136 0 temp 131 4709K 8798K 78643K 39159 0 kqueue 12 18K 28K 78643K 308 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 plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 339 0 336 6 5 1 3 0 8 0 rtentry 112 303 0 206 4 0 4 4 0 8 0 unpcb 136 4116 0 4101 40 32 8 8 0 8 7 syncache 296 25 0 25 6 6 0 1 0 8 0 tcpqe 32 2 0 2 2 2 0 1 0 8 0 tcpcb 736 1343 0 1336 48 40 8 13 0 8 7 arp 120 52 0 34 1 0 1 1 0 8 0 inpcb 304 4416 0 4407 54 48 6 11 0 8 5 nd6 48 70 0 50 1 0 1 1 0 8 0 pkpcb 40 12 0 12 3 3 0 1 0 8 0 kcovpl 48 21 0 13 1 0 1 1 0 8 0 ppxss 1248 26 0 26 4 4 0 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 29 0 27 4 3 1 1 0 482 0 pffrnode 88 29 0 27 4 3 1 1 0 8 0 pffrent 40 70 0 68 4 3 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 25 0 20 1 0 1 1 0 8 0 pfstitem 24 23 0 21 1 0 1 1 0 8 0 pfstkey 112 27 0 25 1 0 1 1 0 8 0 pfstate 320 25 0 23 2 1 1 2 0 8 0 pfrule 1360 113 0 86 4 1 3 3 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 1259 0 831 37 10 27 30 0 8 0 art_table 32 1260 0 831 4 0 4 4 0 8 0 art_node 16 299 0 213 1 0 1 1 0 8 0 sysvmsgpl 40 21 0 11 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 126 0 116 1 0 1 1 0 8 0 shmpl 112 104 0 11 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 7626 0 6182 91 0 91 91 0 8 0 ffsino 272 7626 0 6182 97 0 97 97 0 8 0 nchpl 144 14023 0 12398 63 0 63 63 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 48751 0 48751 5 4 1 2 0 8 1 percpumem 16 116 0 76 1 0 1 1 0 8 0 vcpupl 2048 23 0 0 3 0 3 3 0 8 0 vmpool 560 28 0 5 2 0 2 2 0 8 0 pfiaddrpl 120 13 0 3 4 3 1 1 0 8 0 scsiplug 72 7 0 7 2 2 0 1 0 8 0 scxspl 216 42422 0 42422 13 12 1 8 0 8 1 plimitpl 152 438 0 423 1 0 1 1 0 8 0 sigapl 424 5336 0 5270 8 0 8 8 0 8 0 futexpl 64 48222 0 48219 2 1 1 1 0 8 0 knotepl 120 290 0 0 7 0 7 7 0 8 0 kqueuepl 216 678 0 670 13 12 1 5 0 8 0 pipepl 336 1134 0 1106 31 28 3 10 0 8 0 fdescpl 496 5300 0 5271 5 1 4 5 0 8 0 filepl 152 32863 0 32623 68 49 19 19 0 8 9 lockfpl 104 1256 0 1254 4 2 2 2 0 8 1 lockfspl 48 364 0 362 1 0 1 1 0 8 0 sessionpl 144 37 0 20 1 0 1 1 0 8 0 pgrppl 48 287 0 270 1 0 1 1 0 8 0 ucredpl 96 3431 0 3419 1 0 1 1 0 8 0 zombiepl 144 5273 0 5270 1 0 1 1 0 8 0 processpl 1064 5336 0 5270 5 0 5 5 0 8 0 procpl 672 14152 0 14070 12 4 8 9 0 8 0 srpgc 96 18 0 18 8 8 0 1 0 8 0 sosppl 168 12 0 12 2 1 1 1 0 8 1 sockpl 480 8890 0 8863 202 170 32 32 0 8 28 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 17 0 0 3 0 3 3 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 17 0 0 2 0 2 2 0 8 0 mcl8k 8192 18 0 0 3 0 3 3 0 8 0 mcl4k 4096 25 0 0 4 1 3 3 0 8 0 mcl2k2 2112 8 0 0 1 0 1 1 0 8 0 mcl2k 2048 198 0 0 22 0 22 22 0 8 0 mtagpl 96 303 0 0 7 0 7 7 0 8 0 mbufpl 256 719 0 0 35 0 35 35 0 8 0 bufpl 288 10421 0 4086 453 0 453 453 0 8 0 anonpl 24 1426580 0 1406305 227 81 146 192 0 186 16 amapchunkpl 152 155662 0 154730 86 45 41 65 0 158 3 amappl16 200 11790 0 11189 52 15 37 45 0 8 4 amappl15 192 1126 0 1121 1 0 1 1 0 8 0 amappl14 184 694 0 692 1 0 1 1 0 8 0 amappl13 176 459 0 453 1 0 1 1 0 8 0 amappl12 168 54 0 49 1 0 1 1 0 8 0 amappl11 160 657 0 641 1 0 1 1 0 8 0 amappl10 152 856 0 847 1 0 1 1 0 8 0 amappl9 144 1170 0 1164 1 0 1 1 0 8 0 amappl8 136 2295 0 2191 4 0 4 4 0 8 0 amappl7 128 1538 0 1519 1 0 1 1 0 8 0 amappl6 120 975 0 947 2 1 1 2 0 8 0 amappl5 112 4514 0 4494 1 0 1 1 0 8 0 amappl4 104 3017 0 2987 2 1 1 2 0 8 0 amappl3 96 668 0 657 1 0 1 1 0 8 0 amappl2 88 1246 0 1191 3 1 2 3 0 8 0 amappl1 80 97660 0 97082 22 9 13 19 0 8 0 amappl 88 64059 0 63758 10 2 8 8 0 92 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 1 0 0 1 0 1 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 72 106 0 11 2 0 2 2 0 8 0 uaddrrnd 24 5328 0 5276 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 5328 0 5276 1 0 1 1 0 8 0 vmmpekpl 168 43702 0 43641 3 0 3 3 0 8 0 vmmpepl 168 479341 0 476666 184 55 129 145 0 357 2 vmsppl 368 5327 0 5276 5 0 5 5 0 8 0 rwobjpl 56 119892 0 112202 114 3 111 113 0 8 0 pdppl 4096 10663 0 10575 317 225 92 92 0 8 4 pvpl 32 2505559 0 2480589 418 181 237 323 0 265 27 pmappl 248 5327 0 5276 4 0 4 4 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 1168 0 311 25 0 25 25 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff828ebff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82b26688) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82b26688) at __mp_lock+0x122 sys/kern/kern_lock.c:147 reaper(ffff8000210f9500) at reaper+0x150 sys/kern/kern_exit.c:445 end trace frame: 0x0, count: 10 ddb{0}> trace x86_ipi_db(ffffffff828ebff0) at x86_ipi_db+0x1a sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x23 __mp_lock(ffffffff82b26688) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82b26688) at __mp_lock+0x122 sys/kern/kern_lock.c:147 reaper(ffff8000210f9500) at reaper+0x150 sys/kern/kern_exit.c:445 end trace frame: 0x0, count: -5 ddb{0}> machine ddbcpu 1 Stopped at igmp_leavegroup+0x80: movl 0x4(%rax),%r12d igmp_leavegroup(ffff800000cf2d80) at igmp_leavegroup+0x80 sys/netinet/igmp.c:521 in_delmulti(ffff800000cf2d80) at in_delmulti+0xb7 sys/netinet/in.c:917 ip_freemoptions(ffff800000c1c5f0) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1764 in_pcbdetach(fffffd806f67fe40) at in_pcbdetach+0xf3 sys/netinet/in_pcb.c:580 udp_detach(fffffd806d4965b8) at udp_detach+0x3b sys/netinet/udp_usrreq.c:1249 soclose(fffffd806d4965b8,0) at soclose+0x255 sys/kern/uipc_socket.c:351 soo_close(fffffd8064b829a0,ffff8000260f2fc0) at soo_close+0x40 fdrop(fffffd8064b829a0,ffff8000260f2fc0) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd8064b829a0,ffff8000260f2fc0) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff8000260f2fc0) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff8000260f2fc0,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202 sys_exit(ffff8000260f2fc0,ffff800024e8a210,ffff800024e8a270) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800024e8a2e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800024e8a2e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcbf50, count: 1 ddb{1}> trace igmp_leavegroup(ffff800000cf2d80) at igmp_leavegroup+0x80 sys/netinet/igmp.c:521 in_delmulti(ffff800000cf2d80) at in_delmulti+0xb7 sys/netinet/in.c:917 ip_freemoptions(ffff800000c1c5f0) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1764 in_pcbdetach(fffffd806f67fe40) at in_pcbdetach+0xf3 sys/netinet/in_pcb.c:580 udp_detach(fffffd806d4965b8) at udp_detach+0x3b sys/netinet/udp_usrreq.c:1249 soclose(fffffd806d4965b8,0) at soclose+0x255 sys/kern/uipc_socket.c:351 soo_close(fffffd8064b829a0,ffff8000260f2fc0) at soo_close+0x40 fdrop(fffffd8064b829a0,ffff8000260f2fc0) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd8064b829a0,ffff8000260f2fc0) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff8000260f2fc0) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff8000260f2fc0,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202 sys_exit(ffff8000260f2fc0,ffff800024e8a210,ffff800024e8a270) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff800024e8a2e0) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff800024e8a2e0) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffcbf50, count: -14