uvm_fault(0xfffffd806e3a93a0, 0x4, 0, 1) -> e kernel: page fault trap, code=0 Stopped at igmp_leavegroup+0xaf: movl 0x4(%rax),%r12d TID PID UID PRFLAGS PFLAGS CPU COMMAND 369508 37068 0 0x14000 0x200 0 reaper igmp_leavegroup(ffff800000d15ec0,ffff8000006b8000) at igmp_leavegroup+0xaf sys/netinet/igmp.c:512 in_delmulti(ffff800000d15ec0) at in_delmulti+0xd8 sys/netinet/in.c:908 ip_freemoptions(ffff800000d41e80) at ip_freemoptions+0x5d sys/netinet/ip_output.c:1770 in_pcbdetach(fffffd806f54ccf0) at in_pcbdetach+0x97 sys/netinet/in_pcb.c:591 udp_detach(fffffd807e96e018) at udp_detach+0x3f sys/netinet/udp_usrreq.c:1113 soclose(fffffd807e96e018,0) at soclose+0x253 pru_detach sys/sys/protosw.h:281 [inline] soclose(fffffd807e96e018,0) at soclose+0x253 sys/kern/uipc_socket.c:397 soo_close(fffffd807e8be868,ffff80002129b5e8) at soo_close+0x44 fdrop(fffffd807e8be868,ffff80002129b5e8) at fdrop+0xcb sys/kern/kern_descrip.c:1274 closef(fffffd807e8be868,ffff80002129b5e8) at closef+0x120 sys/kern/kern_descrip.c:1258 fdfree(ffff80002129b5e8) at fdfree+0xf4 sys/kern/kern_descrip.c:1190 exit1(ffff80002129b5e8,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:197 sys_exit(ffff80002129b5e8,ffff80002450b160,ffff80002450b1b0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002450b230) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002450b230) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7eb7cf122fa0, 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(0xfffffd806e3a93a0, 0x4, 0, 1) -> e ddb{1}> trace igmp_leavegroup(ffff800000d15ec0,ffff8000006b8000) at igmp_leavegroup+0xaf sys/netinet/igmp.c:512 in_delmulti(ffff800000d15ec0) at in_delmulti+0xd8 sys/netinet/in.c:908 ip_freemoptions(ffff800000d41e80) at ip_freemoptions+0x5d sys/netinet/ip_output.c:1770 in_pcbdetach(fffffd806f54ccf0) at in_pcbdetach+0x97 sys/netinet/in_pcb.c:591 udp_detach(fffffd807e96e018) at udp_detach+0x3f sys/netinet/udp_usrreq.c:1113 soclose(fffffd807e96e018,0) at soclose+0x253 pru_detach sys/sys/protosw.h:281 [inline] soclose(fffffd807e96e018,0) at soclose+0x253 sys/kern/uipc_socket.c:397 soo_close(fffffd807e8be868,ffff80002129b5e8) at soo_close+0x44 fdrop(fffffd807e8be868,ffff80002129b5e8) at fdrop+0xcb sys/kern/kern_descrip.c:1274 closef(fffffd807e8be868,ffff80002129b5e8) at closef+0x120 sys/kern/kern_descrip.c:1258 fdfree(ffff80002129b5e8) at fdfree+0xf4 sys/kern/kern_descrip.c:1190 exit1(ffff80002129b5e8,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:197 sys_exit(ffff80002129b5e8,ffff80002450b160,ffff80002450b1b0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002450b230) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002450b230) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7eb7cf122fa0, count: -14 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80002450adf0 rbx 0x3 rdx 0 rcx 0x1 rax 0 r8 0 r9 0x1 r10 0x46f2572cb0247d59 r11 0x3a15798d46e6c75d r12 0 r13 0x3 r14 0xffff800000d15ec0 r15 0xffff8000006b8000 rip 0xffffffff818f367f igmp_leavegroup+0xaf cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002450adc0 ss 0x10 igmp_leavegroup+0xaf: movl 0x4(%rax),%r12d ddb{1}> show proc PROC (syz-executor.1) pid=258861 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=84, nice=20 forw=0xffffffffffffffff, list=0xffff8000212b25a0,0xffff8000212b2040 process=0xffff800021290ca8 user=0xffff800024506000, vmspace=0xfffffd806e3a93a0 estcpu=34, cpticks=3, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 74533 371270 26675 0 2 0 syz-executor.4 70946 69441 47372 0 2 0 syz-executor.0 70946 287177 47372 0 2 0x4000000 syz-executor.0 19164 233046 4560 0 3 0x2 biowait syz-executor.3 26441 139058 4560 0 3 0x82 nanoslp syz-executor.7 17199 508595 4560 0 3 0x82 nanoslp syz-executor.5 5421 456146 4560 0 3 0x82 nanoslp syz-executor.1 43526 455665 1 0 3 0x100083 ttyin getty 89219 367722 0 0 3 0x14200 bored sosplice 91230 383277 4560 0 3 0x2 biowait syz-executor.6 26675 521441 4560 0 3 0x82 nanoslp syz-executor.4 79330 278904 4560 0 3 0x2 biowait syz-executor.2 47372 190077 4560 0 3 0x82 nanoslp syz-executor.0 4560 173794 45030 0 3 0x82 thrsleep syz-fuzzer 4560 272708 45030 0 3 0x4000082 nanoslp syz-fuzzer 4560 29493 45030 0 3 0x4000082 wait syz-fuzzer 4560 329819 45030 0 3 0x4000082 wait syz-fuzzer 4560 144220 45030 0 3 0x4000082 wait syz-fuzzer 4560 235859 45030 0 3 0x4000082 thrsleep syz-fuzzer 4560 345840 45030 0 3 0x4000082 wait syz-fuzzer 4560 228787 45030 0 3 0x4000082 wait syz-fuzzer 4560 210288 45030 0 3 0x4000082 thrsleep syz-fuzzer 4560 180878 45030 0 3 0x4000082 wait syz-fuzzer 4560 222991 45030 0 3 0x4000082 thrsleep syz-fuzzer 4560 402175 45030 0 3 0x4000082 thrsleep syz-fuzzer 4560 482506 45030 0 3 0x4000082 thrsleep syz-fuzzer 4560 281012 45030 0 3 0x4000082 wait syz-fuzzer 4560 490528 45030 0 3 0x4000082 kqread syz-fuzzer 4560 98328 45030 0 3 0x4000082 wait syz-fuzzer 45030 38383 50778 0 3 0x10008a sigsusp ksh 50778 513843 30349 0 3 0x9a kqread sshd 30349 157165 1 0 3 0x88 kqread sshd 5499 411063 93799 74 3 0x1100092 bpf pflogd 93799 412645 1 0 3 0x80 netio pflogd 36602 309421 43408 73 3 0x1100090 kqread syslogd 43408 83290 1 0 3 0x100082 netio syslogd 48177 174912 1 0 3 0x100080 kqread resolvd 79291 285122 56369 77 3 0x100092 kqread dhcpleased 22422 484933 56369 77 3 0x100092 kqread dhcpleased 56369 386214 1 0 3 0x80 kqread dhcpleased 7385 453510 0 0 3 0x14200 bored smr 75011 215487 0 0 2 0x14200 zerothread 6331 101471 0 0 3 0x14200 aiodoned aiodoned 89882 383397 0 0 3 0x14200 syncer update 79102 458815 0 0 3 0x14200 cleaner cleaner 37068 369508 0 0 7 0x14200 reaper 57070 158147 0 0 3 0x14200 pgdaemon pagedaemon 50730 176448 0 0 3 0x14200 bored viomb 1884 193986 0 0 3 0x40014200 acpi0 acpi0 22194 375359 0 0 3 0x40014200 idle1 255 27930 0 0 3 0x14200 bored softnet 73434 5825 0 0 3 0x14200 bored softnet 99391 280428 0 0 3 0x14200 bored softnet 89160 137315 0 0 3 0x14200 bored softnet 42304 222751 0 0 3 0x14200 bored systqmp 64421 42506 0 0 3 0x14200 bored systq 7016 216915 0 0 3 0x40014200 bored softclock 9653 106475 0 0 3 0x40014200 idle0 1 187762 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 10209 6497K 6900K 78643K 13912 0 pcb 13 13K 14K 78643K 390 0 rtable 197 15K 15K 78643K 925 0 ifaddr 78 24K 26K 78643K 284 0 sysctl 2 0K 0K 78643K 2 0 counters 58 35K 36K 78643K 294 0 ioctlops 0 0K 4K 78643K 1715 0 iov 0 0K 48K 78643K 1022 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1438 90K 90K 78643K 2524 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 18 0 VM map 2 1K 1K 78643K 2 0 sem 11 1K 1K 78643K 20 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 13 45K 97K 78643K 2838 0 sigio 1 0K 0K 78643K 123 0 proc 71 91K 115K 78643K 887 0 subproc 104 6K 6K 78643K 210 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 2 0K 0K 78643K 2358 0 in_multi 72 5K 6K 78643K 522 0 ether_multi 1 0K 0K 78643K 18 0 mrt 1 0K 0K 78643K 18 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 157 705K 705K 78643K 157 0 exec 0 0K 1K 78643K 805 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 8 62K 64K 78643K 10 0 UVM amap 358 87K 90K 78643K 30171 0 UVM aobj 131 4K 4K 78643K 131 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 69 0 NDP 14 0K 0K 78643K 97 0 temp 137 5858K 6882K 78643K 18193 0 kqueue 12 18K 26K 78643K 201 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 120 206 0 203 3 0 3 3 0 8 2 rtentry 112 253 0 170 4 0 4 4 0 8 0 unpcb 144 3590 0 3574 19 18 1 6 0 8 0 syncache 296 18 0 18 5 5 0 1 0 8 0 tcpqe 32 267 0 267 5 5 0 1 0 8 0 tcpcb 776 1005 0 1001 26 22 4 8 0 8 3 arp 120 39 0 24 1 0 1 1 0 8 0 inpcb 368 4227 0 4219 29 20 9 14 0 8 8 nd6 136 56 0 38 1 0 1 1 0 8 0 pkpcb 40 4 0 4 1 1 0 1 0 8 0 kcovpl 48 16 0 8 1 0 1 1 0 8 0 ppxss 1256 94 0 94 5 4 1 1 0 8 1 pppxif 1456 7 0 7 2 1 1 1 0 8 1 pfstscr 40 4 0 4 1 1 0 1 0 8 0 pffrag 232 54 0 48 1 0 1 1 0 482 0 pffrnode 88 54 0 48 1 0 1 1 0 8 0 pffrent 40 110 0 104 1 0 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 pfanchor 1288 720 4 275 45 3 42 43 0 8 0 pfstitem 24 76 0 60 1 0 1 1 0 8 0 pfstkey 128 76 0 60 2 0 2 2 0 8 0 pfstate 384 72 0 56 6 1 5 6 0 8 0 pfrule 1344 21 0 20 2 1 1 2 0 8 0 rttmr 136 3 0 3 1 1 0 1 0 8 0 art_heap8 4096 6 0 4 5 3 2 3 0 8 0 art_heap4 256 1079 0 708 33 9 24 29 0 8 0 art_table 32 1085 0 712 4 0 4 4 0 8 0 art_node 16 251 0 177 1 0 1 1 0 8 0 sysvmsgpl 40 15 0 5 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 9 0 0 1 0 1 1 0 8 0 shmpl 112 128 0 0 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 4913 0 3455 92 0 92 92 0 8 0 ffsino 272 4913 0 3455 98 0 98 98 0 8 0 nchpl 144 8783 0 7132 63 0 63 63 0 8 0 rtmask 32 5 0 5 2 1 1 1 0 8 1 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 216 5926 0 0 330 0 330 330 0 8 0 namei 1024 29803 0 29800 3 2 1 3 0 8 0 percpumem 16 160 0 118 1 0 1 1 0 8 0 kstatmem 264 120 0 92 3 0 3 3 0 8 0 scxspl 216 25395 0 25392 13 12 1 8 0 8 0 plimitpl 152 774 0 758 1 0 1 1 0 8 0 sigapl 424 3135 0 3089 8 2 6 7 0 8 0 futexpl 64 25326 0 25326 1 0 1 1 0 8 1 knotepl 120 433 0 0 11 0 11 11 0 8 0 kqueuepl 216 436 0 428 7 6 1 5 0 8 0 pipepl 320 676 0 648 21 16 5 8 0 8 2 fdescpl 496 3117 0 3091 5 1 4 5 0 8 0 filepl 152 21102 0 20861 35 20 15 19 0 8 5 lockfpl 104 425 0 423 2 1 1 2 0 8 0 lockfspl 48 210 0 208 1 0 1 1 0 8 0 sessionpl 144 33 0 16 1 0 1 1 0 8 0 pgrppl 48 106 0 89 1 0 1 1 0 8 0 ucredpl 104 1605 0 1593 1 0 1 1 0 8 0 zombiepl 144 3092 0 3089 1 0 1 1 0 8 0 processpl 1072 3135 0 3089 4 0 4 4 0 8 0 procpl 696 8165 0 8098 12 4 8 8 0 8 1 srpgc 96 14 0 14 3 3 0 1 0 8 0 sosppl 168 23 0 23 4 4 0 1 0 8 0 sockpl 488 8063 0 8036 141 129 12 29 0 8 7 mcl64k 65536 17 0 0 3 0 3 3 0 8 0 mcl16k 16384 14 0 0 2 0 2 2 0 8 0 mcl12k 12288 17 0 0 2 0 2 2 0 8 0 mcl9k 9216 14 0 0 1 0 1 1 0 8 0 mcl8k 8192 17 0 0 3 1 2 3 0 8 0 mcl4k 4096 18 0 0 3 0 3 3 0 8 0 mcl2k2 2112 4 0 0 1 0 1 1 0 8 0 mcl2k 2048 497 0 0 62 0 62 62 0 8 0 mtagpl 96 90 0 0 3 0 3 3 0 8 0 mbufpl 256 1679 0 0 104 0 104 104 0 8 0 bufpl 288 8030 0 1710 452 0 452 452 0 8 0 anonpl 24 417025 0 401784 147 40 107 129 0 186 0 amapchunkpl 152 95587 0 94686 62 20 42 53 0 158 0 amappl16 200 9211 0 8743 55 29 26 41 0 8 1 amappl15 192 10 0 9 1 0 1 1 0 8 0 amappl14 184 180 0 165 2 1 1 2 0 8 0 amappl13 176 13 0 13 1 1 0 1 0 8 0 amappl12 168 3901 0 3872 4 2 2 3 0 8 0 amappl11 160 53 0 38 1 0 1 1 0 8 0 amappl10 152 40 0 30 1 0 1 1 0 8 0 amappl9 144 230 0 228 2 1 1 2 0 8 0 amappl8 136 312 0 237 3 0 3 3 0 8 0 amappl7 128 84 0 65 1 0 1 1 0 8 0 amappl6 120 338 0 319 2 1 1 2 0 8 0 amappl5 112 206 0 197 1 0 1 1 0 8 0 amappl4 104 788 0 745 3 1 2 3 0 8 0 amappl3 96 18789 0 18711 4 1 3 3 0 8 0 amappl2 88 3507 0 3443 3 1 2 3 0 8 0 amappl1 80 20063 0 19515 23 10 13 23 0 8 0 amappl 88 29527 0 29291 7 0 7 7 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 72 130 0 0 3 0 3 3 0 8 0 uaddrrnd 24 3117 0 3091 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3117 0 3091 1 0 1 1 0 8 0 vmmpekpl 168 29266 0 29197 4 0 4 4 0 8 0 vmmpepl 168 206268 0 203971 185 58 127 146 0 357 13 vmsppl 456 3116 0 3090 5 1 4 5 0 8 0 rwobjpl 56 61458 0 53819 114 5 109 109 0 8 0 pdppl 4096 6242 0 6180 252 182 70 86 0 8 8 pvpl 32 1046118 0 1025453 369 132 237 366 0 265 48 pmappl 248 3116 0 3090 3 1 2 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1152 0 223 27 0 27 27 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82bd8ff0) at x86_ipi_db+0x1e 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:578 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:148 __mp_lock(ffffffff82ccc088) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82ccc088) at __mp_lock+0x133 sys/kern/kern_lock.c:147 uvm_unmap_detach(ffff8000211b9d50,1) at uvm_unmap_detach+0x113 sys/uvm/uvm_map.c:1382 uvm_map_teardown(fffffd8069c7f1e0) at uvm_map_teardown+0x29d sys/uvm/uvm_map.c:2598 uvmspace_free(fffffd8069c7f1e0) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3516 reaper(ffff8000211acda0) at reaper+0x19a sys/kern/kern_exit.c:449 end trace frame: 0x0, count: 6 ddb{0}> trace x86_ipi_db(ffffffff82bd8ff0) at x86_ipi_db+0x1e 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 __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 kd_curproc sys/dev/kcov.c:578 [inline] __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x33 sys/dev/kcov.c:148 __mp_lock(ffffffff82ccc088) at __mp_lock+0x133 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82ccc088) at __mp_lock+0x133 sys/kern/kern_lock.c:147 uvm_unmap_detach(ffff8000211b9d50,1) at uvm_unmap_detach+0x113 sys/uvm/uvm_map.c:1382 uvm_map_teardown(fffffd8069c7f1e0) at uvm_map_teardown+0x29d sys/uvm/uvm_map.c:2598 uvmspace_free(fffffd8069c7f1e0) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3516 reaper(ffff8000211acda0) at reaper+0x19a sys/kern/kern_exit.c:449 end trace frame: 0x0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at igmp_leavegroup+0xaf: movl 0x4(%rax),%r12d igmp_leavegroup(ffff800000d15ec0,ffff8000006b8000) at igmp_leavegroup+0xaf sys/netinet/igmp.c:512 in_delmulti(ffff800000d15ec0) at in_delmulti+0xd8 sys/netinet/in.c:908 ip_freemoptions(ffff800000d41e80) at ip_freemoptions+0x5d sys/netinet/ip_output.c:1770 in_pcbdetach(fffffd806f54ccf0) at in_pcbdetach+0x97 sys/netinet/in_pcb.c:591 udp_detach(fffffd807e96e018) at udp_detach+0x3f sys/netinet/udp_usrreq.c:1113 soclose(fffffd807e96e018,0) at soclose+0x253 pru_detach sys/sys/protosw.h:281 [inline] soclose(fffffd807e96e018,0) at soclose+0x253 sys/kern/uipc_socket.c:397 soo_close(fffffd807e8be868,ffff80002129b5e8) at soo_close+0x44 fdrop(fffffd807e8be868,ffff80002129b5e8) at fdrop+0xcb sys/kern/kern_descrip.c:1274 closef(fffffd807e8be868,ffff80002129b5e8) at closef+0x120 sys/kern/kern_descrip.c:1258 fdfree(ffff80002129b5e8) at fdfree+0xf4 sys/kern/kern_descrip.c:1190 exit1(ffff80002129b5e8,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:197 sys_exit(ffff80002129b5e8,ffff80002450b160,ffff80002450b1b0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002450b230) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002450b230) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7eb7cf122fa0, count: 1 ddb{1}> trace igmp_leavegroup(ffff800000d15ec0,ffff8000006b8000) at igmp_leavegroup+0xaf sys/netinet/igmp.c:512 in_delmulti(ffff800000d15ec0) at in_delmulti+0xd8 sys/netinet/in.c:908 ip_freemoptions(ffff800000d41e80) at ip_freemoptions+0x5d sys/netinet/ip_output.c:1770 in_pcbdetach(fffffd806f54ccf0) at in_pcbdetach+0x97 sys/netinet/in_pcb.c:591 udp_detach(fffffd807e96e018) at udp_detach+0x3f sys/netinet/udp_usrreq.c:1113 soclose(fffffd807e96e018,0) at soclose+0x253 pru_detach sys/sys/protosw.h:281 [inline] soclose(fffffd807e96e018,0) at soclose+0x253 sys/kern/uipc_socket.c:397 soo_close(fffffd807e8be868,ffff80002129b5e8) at soo_close+0x44 fdrop(fffffd807e8be868,ffff80002129b5e8) at fdrop+0xcb sys/kern/kern_descrip.c:1274 closef(fffffd807e8be868,ffff80002129b5e8) at closef+0x120 sys/kern/kern_descrip.c:1258 fdfree(ffff80002129b5e8) at fdfree+0xf4 sys/kern/kern_descrip.c:1190 exit1(ffff80002129b5e8,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:197 sys_exit(ffff80002129b5e8,ffff80002450b160,ffff80002450b1b0) at sys_exit+0x1a sys/kern/kern_exit.c:89 syscall(ffff80002450b230) at syscall+0x5e2 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002450b230) at syscall+0x5e2 sys/arch/amd64/amd64/trap.c:632 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7eb7cf122fa0, count: -14