uvm_fault(0xfffffd807dcf4758, 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 106505 52687 0 0 0 0 syz-executor.1 igmp_leavegroup(ffff800000c7bd00) at igmp_leavegroup+0x80 sys/netinet/igmp.c:521 in_delmulti(ffff800000c7bd00) at in_delmulti+0xb7 sys/netinet/in.c:920 ip_freemoptions(ffff800000c249a0) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1764 in_pcbdetach(fffffd8079207140) at in_pcbdetach+0xf3 sys/netinet/in_pcb.c:584 udp_detach(fffffd806e4063d8) at udp_detach+0x3b sys/netinet/udp_usrreq.c:1263 soclose(fffffd806e4063d8,0) at soclose+0x255 sys/kern/uipc_socket.c:361 soo_close(fffffd807c889260,ffff800024680550) at soo_close+0x40 fdrop(fffffd807c889260,ffff800024680550) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd807c889260,ffff800024680550) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800024680550) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff800024680550,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202 sys_exit(ffff800024680550,ffff80002120a070,ffff80002120a0d0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff80002120a140) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002120a140) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffb7c0, 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(0xfffffd807dcf4758, 0x4, 0, 1) -> e ddb{1}> trace igmp_leavegroup(ffff800000c7bd00) at igmp_leavegroup+0x80 sys/netinet/igmp.c:521 in_delmulti(ffff800000c7bd00) at in_delmulti+0xb7 sys/netinet/in.c:920 ip_freemoptions(ffff800000c249a0) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1764 in_pcbdetach(fffffd8079207140) at in_pcbdetach+0xf3 sys/netinet/in_pcb.c:584 udp_detach(fffffd806e4063d8) at udp_detach+0x3b sys/netinet/udp_usrreq.c:1263 soclose(fffffd806e4063d8,0) at soclose+0x255 sys/kern/uipc_socket.c:361 soo_close(fffffd807c889260,ffff800024680550) at soo_close+0x40 fdrop(fffffd807c889260,ffff800024680550) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd807c889260,ffff800024680550) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800024680550) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff800024680550,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202 sys_exit(ffff800024680550,ffff80002120a070,ffff80002120a0d0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff80002120a140) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002120a140) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffb7c0, count: -14 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff800021209cf0 rbx 0 rdx 0 rcx 0x1 rax 0 r8 0 r9 0x1 r10 0x39e0380dabf08641 r11 0x2ed6e3ed651e962c r12 0 r13 0x3 r14 0xffff800000689000 r15 0xffff800000c7bd00 rip 0xffffffff81c87d40 igmp_leavegroup+0x80 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800021209cc0 ss 0x10 igmp_leavegroup+0x80: movl 0x4(%rax),%r12d ddb{1}> show proc PROC (syz-executor.6) pid=513893 stat=onproc flags process=1008 proc=2000 pri=32, usrpri=83, nice=20 forw=0xffffffffffffffff, list=0xffff800024681a50,0xffff8000ffff47f0 process=0xffff80002ad2c868 user=0xffff800021205000, vmspace=0xfffffd807dcf4758 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 23706 521456 95361 0 2 0 syz-executor.2 23706 80032 95361 0 2 0x4000000 syz-executor.2 49710 37520 35682 0 2 0 syz-executor.3 49710 165613 35682 0 2 0x4000000 syz-executor.3 73554 424876 39764 0 2 0 syz-executor.0 73554 43442 39764 0 2 0x4000000 syz-executor.0 52687 106505 95353 0 7 0 syz-executor.1 52687 146518 95353 0 3 0x4000080 fsleep syz-executor.1 52687 147202 95353 0 3 0x4000080 fsleep syz-executor.1 52687 127779 95353 0 2 0x4000000 syz-executor.1 52687 486289 95353 0 2 0x4000000 syz-executor.1 26540 441382 50003 0 2 0 syz-executor.5 26540 385252 50003 0 2 0x4000000 syz-executor.5 94597 499652 63624 0 2 0 syz-executor.7 94597 378945 63624 0 3 0x4000080 fsleep syz-executor.7 79891 147764 89271 0 3 0x82 nanoslp syz-executor.6 63624 222398 89271 0 3 0x82 nanoslp syz-executor.7 95353 466134 89271 0 3 0x82 nanoslp syz-executor.1 50003 379100 89271 0 2 0x2 syz-executor.5 78786 486512 1 0 3 0x100083 ttyopn getty 35682 167913 89271 0 3 0x82 nanoslp syz-executor.3 71510 366361 89271 0 3 0x2 biowait syz-executor.4 39764 367234 89271 0 3 0x82 nanoslp syz-executor.0 4524 498367 0 0 3 0x14280 nfsidl nfsio 26397 507166 0 0 3 0x14280 nfsidl nfsio 61069 42988 0 0 3 0x14280 nfsidl nfsio 7411 92628 0 0 3 0x14280 nfsidl nfsio 31847 132401 0 0 3 0x14280 nfsidl nfsio 11120 488569 0 0 3 0x14280 nfsidl nfsio 52095 289354 0 0 3 0x14280 nfsidl nfsio 17668 164450 0 0 3 0x14280 nfsidl nfsio 31323 452250 0 0 3 0x14280 nfsidl nfsio 81891 42102 0 0 3 0x14280 nfsidl nfsio 1860 184336 0 0 3 0x14280 nfsidl nfsio 66689 308067 0 0 3 0x14280 nfsidl nfsio 38355 371888 0 0 3 0x14280 nfsidl nfsio 13779 36018 0 0 3 0x14280 nfsidl nfsio 16492 301624 0 0 3 0x14280 nfsidl nfsio 73115 60570 0 0 3 0x14280 nfsidl nfsio 43581 491017 0 0 3 0x14280 nfsidl nfsio 17460 243317 0 0 3 0x14280 nfsidl nfsio 23430 109821 0 0 3 0x14280 nfsidl nfsio 76180 480376 0 0 3 0x14280 nfsidl nfsio 95361 79061 89271 0 3 0x82 nanoslp syz-executor.2 31295 203025 0 0 3 0x14200 bored sosplice 89271 85127 33067 0 3 0x82 thrsleep syz-fuzzer 89271 403919 33067 0 3 0x4000082 nanoslp syz-fuzzer 89271 507774 33067 0 3 0x4000082 thrsleep syz-fuzzer 89271 309707 33067 0 3 0x4000082 thrsleep syz-fuzzer 89271 326856 33067 0 3 0x4000082 thrsleep syz-fuzzer 89271 217418 33067 0 3 0x4000082 thrsleep syz-fuzzer 89271 368993 33067 0 3 0x4000082 thrsleep syz-fuzzer 89271 111911 33067 0 3 0x4000082 thrsleep syz-fuzzer 89271 475358 33067 0 3 0x4000082 kqread syz-fuzzer 33067 448580 69793 0 3 0x10008a sigsusp ksh 69793 3400 92976 0 3 0x9a kqread sshd 92976 423717 1 0 3 0x88 kqread sshd 56653 88446 39127 74 3 0x100092 bpf pflogd 39127 326735 1 0 3 0x80 netio pflogd 60492 335398 82346 73 3 0x100090 kqread syslogd 82346 510055 1 0 3 0x100082 netio syslogd 7735 401967 1 0 3 0x100080 kqread resolvd 13300 524259 36696 77 3 0x100092 kqread dhcpleased 64300 154472 36696 77 3 0x100092 kqread dhcpleased 36696 35276 1 0 3 0x80 kqread dhcpleased 28847 519237 0 0 3 0x14200 bored smr 98672 184991 0 0 2 0x14200 zerothread 24805 247816 0 0 3 0x14200 aiodoned aiodoned 25343 235053 0 0 3 0x14200 syncer update 17968 40697 0 0 3 0x14200 cleaner cleaner 62041 148235 0 0 3 0x14200 reaper reaper 73639 208495 0 0 3 0x14200 pgdaemon pagedaemon 2191 317604 0 0 3 0x14200 bored viomb 83482 284120 0 0 3 0x40014200 acpi0 acpi0 33146 332541 0 0 3 0x40014200 idle1 40800 212004 0 0 3 0x14200 bored softnet 96321 475228 0 0 3 0x14200 bored systqmp 43958 330417 0 0 3 0x14200 bored systq 61775 175828 0 0 3 0x40014200 bored softclock 46484 69373 0 0 3 0x40014200 idle0 1 106582 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 71510 (syz-executor.4) thread 0xffff800021157268 (366361) exclusive rrwlock inode r = 0 (0xfffffd80668d53c8) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 ufs_ihashins+0x42 sys/ufs/ufs/ufs_ihash.c:140 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1347 #6 ffs_inode_alloc+0x1be sys/ufs/ffs/ffs_alloc.c:394 #7 ufs_mkdir+0xf4 sys/ufs/ufs/ufs_vnops.c:1162 #8 VOP_MKDIR+0xbf sys/kern/vfs_vops.c:404 #9 domkdirat+0x121 sys/kern/vfs_syscalls.c:3100 #10 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #10 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd807e43c810) #0 witness_lock+0x44d #1 rw_enter+0x3e1 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0x8b sys/kern/kern_rwlock.c:461 #3 VOP_LOCK+0x87 sys/kern/vfs_vops.c:534 #4 vn_lock+0x84 sys/kern/vfs_vnops.c:579 #5 vfs_lookup+0xd1 sys/kern/vfs_lookup.c:413 #6 namei+0x36a sys/kern/vfs_lookup.c:245 #7 domkdirat+0x75 sys/kern/vfs_syscalls.c:3085 #8 syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] #8 syscall+0x489 sys/arch/amd64/amd64/trap.c:585 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10231 6525K 6991K 78643K 38223 0 pcb 13 20K 25K 78643K 4132 0 rtable 244 23K 26K 78643K 4703 0 ifaddr 111 25K 26K 78643K 1996 0 sysctl 3 1K 1K 78643K 3 0 counters 58 35K 36K 78643K 520 0 ioctlops 0 0K 6K 78643K 4355 0 iov 0 0K 28K 78643K 1558 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 5 0 vnodes 1423 89K 89K 78643K 11113 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 151 0 VM map 2 1K 1K 78643K 2 0 sem 11 1K 1K 78643K 15 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 17 61K 93K 78643K 20519 0 sigio 0 0K 0K 78643K 353 0 proc 73 87K 136K 78643K 3755 0 subproc 104 6K 6K 78643K 1173 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 2 0K 0K 78643K 2371 0 in_multi 78 5K 6K 78643K 1669 0 ether_multi 1 0K 0K 78643K 179 0 mrt 1 0K 0K 78643K 31 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 253 1129K 1129K 78643K 253 0 exec 0 0K 2K 78643K 5127 0 pfkey data 0 0K 0K 78643K 78 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 677 1528K 1529K 78643K 259696 0 UVM aobj 131 4K 4K 78643K 133 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 1011 0 NDP 16 0K 2K 78643K 441 0 temp 157 4724K 8820K 78643K 302294 0 kqueue 12 18K 30K 78643K 1154 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 1655 0 1652 20 19 1 3 0 8 0 rtentry 112 1234 0 1146 4 0 4 4 0 8 0 unpcb 136 28992 0 28976 206 203 3 10 0 8 2 syncache 296 204 0 204 20 20 0 1 0 8 0 tcpqe 32 36 0 36 8 8 0 1 0 8 0 tcpcb 736 7976 0 7959 218 213 5 17 0 8 2 arp 120 218 0 201 1 0 1 1 0 8 0 inpcb 304 19670 0 19652 198 191 7 12 0 8 5 rttmr 72 7 0 7 2 2 0 1 0 8 0 nd6 48 302 0 281 1 0 1 1 0 8 0 pkpcb 40 317 0 317 18 18 0 2 0 8 0 kcovpl 48 90 0 82 1 0 1 1 0 8 0 ppxss 1248 60 0 60 16 16 0 1 0 8 0 pfstscr 40 30 0 30 6 5 1 1 0 8 1 pffrag 232 135 0 134 6 5 1 1 0 482 0 pffrnode 88 135 0 134 6 5 1 1 0 8 0 pffrent 40 512 0 511 6 5 1 1 0 8 0 pfosfp 40 1441 0 1015 5 0 5 5 0 8 0 pfosfpen 112 1441 0 716 21 0 21 21 0 8 0 pfrke_plain 168 6 0 6 1 1 0 1 0 8 0 pfrktable 1344 380 0 366 4 2 2 2 0 8 0 pftag 88 46 0 39 1 0 1 1 0 8 0 pfstitem 24 52 0 50 1 0 1 1 0 8 0 pfstkey 112 92 0 90 1 0 1 1 0 8 0 pfstate 320 70 0 68 3 2 1 3 0 8 0 pfsrctr 152 1 0 1 1 1 0 1 0 8 0 pfrule 1360 946 0 861 16 8 8 10 0 8 0 art_heap8 4096 7 0 5 6 3 3 3 0 8 1 art_heap4 256 5053 0 4706 42 14 28 32 0 8 0 art_table 32 5060 0 4711 5 1 4 5 0 8 0 art_node 16 1231 0 1154 1 0 1 1 0 8 0 sysvmsgpl 40 177 0 137 1 0 1 1 0 8 0 semupl 112 5 0 5 1 1 0 1 0 8 0 semapl 112 12 0 3 1 0 1 1 0 8 0 shmpl 112 130 0 2 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 27868 0 26347 96 0 96 96 0 8 0 ffsino 272 27868 0 26347 102 0 102 102 0 8 0 nchpl 144 55255 0 53629 63 0 63 63 0 8 0 rtmask 32 12 0 12 1 1 0 1 0 8 0 uvmvnodes 80 7014 0 0 144 0 144 144 0 8 0 vnodes 224 7014 0 0 413 0 413 413 0 8 0 namei 1024 199103 0 199102 9 8 1 2 0 8 0 percpumem 16 272 0 231 1 0 1 1 0 8 0 vcpupl 2048 232 0 0 29 0 29 29 0 8 0 vmpool 560 283 0 51 18 1 17 17 0 8 0 pfiaddrpl 120 174 0 149 1 0 1 1 0 8 0 scsiplug 72 16 0 16 6 6 0 1 0 8 0 scxspl 216 157923 0 157922 50 49 1 8 0 8 0 plimitpl 152 2129 0 2114 1 0 1 1 0 8 0 sigapl 424 20697 0 20632 11 3 8 8 0 8 0 futexpl 64 189500 0 189497 3 2 1 1 0 8 0 knotepl 120 1060 0 0 11 1 10 11 0 8 0 kqueuepl 216 4635 0 4627 68 67 1 5 0 8 0 pipepl 336 4230 0 4202 117 111 6 13 0 8 3 fdescpl 496 20641 0 20611 9 5 4 5 0 8 0 filepl 152 152671 0 152426 259 243 16 22 0 8 5 lockfpl 104 4986 0 4984 9 8 1 2 0 8 0 lockfspl 48 1570 0 1568 1 0 1 1 0 8 0 sessionpl 144 107 0 90 1 0 1 1 0 8 0 pgrppl 48 299 0 282 1 0 1 1 0 8 0 ucredpl 96 16057 0 16040 1 0 1 1 0 8 0 zombiepl 144 20633 0 20632 4 3 1 1 0 8 0 processpl 1064 20697 0 20632 6 1 5 5 0 8 0 procpl 672 59611 0 59529 45 36 9 9 0 8 1 srpgc 96 104 0 104 19 19 0 1 0 8 0 sosppl 168 132 0 132 27 26 1 1 0 8 1 sockpl 480 50653 0 50616 1000 987 13 41 0 8 8 mcl64k 65536 44 0 0 3 0 3 3 0 8 0 mcl16k 16384 25 0 0 4 1 3 3 0 8 0 mcl12k 12288 25 0 0 2 0 2 2 0 8 0 mcl9k 9216 41 0 0 2 0 2 2 0 8 0 mcl8k 8192 52 0 0 3 0 3 3 0 8 0 mcl4k 4096 57 0 0 4 1 3 3 0 8 0 mcl2k2 2112 15 0 0 1 0 1 1 0 8 0 mcl2k 2048 434 0 0 30 2 28 28 0 8 0 mtagpl 96 1127 0 0 21 0 21 21 0 8 0 mbufpl 256 2046 0 0 102 1 101 101 0 8 0 bufpl 288 36125 0 29110 502 0 502 502 0 8 0 anonpl 24 5845406 0 5823726 338 189 149 171 0 186 0 amapchunkpl 152 640404 0 639481 131 89 42 49 0 158 4 amappl16 200 56209 0 55433 210 168 42 58 0 8 0 amappl15 192 2670 0 2657 1 0 1 1 0 8 0 amappl14 184 287 0 281 1 0 1 1 0 8 0 amappl13 176 4809 0 4805 1 0 1 1 0 8 0 amappl12 168 3300 0 3294 1 0 1 1 0 8 0 amappl11 160 1860 0 1846 1 0 1 1 0 8 0 amappl10 152 2938 0 2924 1 0 1 1 0 8 0 amappl9 144 3241 0 3237 1 0 1 1 0 8 0 amappl8 136 4707 0 4555 7 1 6 6 0 8 0 amappl7 128 2610 0 2598 1 0 1 1 0 8 0 amappl6 120 3290 0 3260 2 1 1 2 0 8 0 amappl5 112 18876 0 18850 1 0 1 1 0 8 0 amappl4 104 6268 0 6227 4 2 2 2 0 8 0 amappl3 96 6326 0 6314 1 0 1 1 0 8 0 amappl2 88 7866 0 7787 3 1 2 3 0 8 0 amappl1 80 370981 0 370377 19 5 14 19 0 8 0 amappl 88 257449 0 257072 10 0 10 10 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 72 132 0 2 3 0 3 3 0 8 0 uaddrrnd 24 20924 0 20662 2 0 2 2 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 20924 0 20662 2 0 2 2 0 8 0 vmmpekpl 168 157369 0 157271 5 0 5 5 0 8 0 vmmpepl 168 1902259 0 1898794 493 329 164 173 0 357 8 vmsppl 368 20923 0 20662 27 3 24 24 0 8 0 rwobjpl 56 458073 0 448908 154 24 130 130 0 8 0 pdppl 4096 41855 0 41556 1175 874 301 301 0 8 2 pvpl 32 9779333 0 9754319 607 390 217 262 0 265 0 pmappl 248 20923 0 20662 18 1 17 17 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 2491 0 1241 36 0 36 36 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp x86_ipi_db(ffffffff82901ff0) 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(ffffffff82b5bd20) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82b5bd20) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff80002e1564d0,ffff80000004ad00) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f end of kernel end trace frame: 0x7f7fffffb7c0, count: 9 ddb{0}> trace x86_ipi_db(ffffffff82901ff0) 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(ffffffff82b5bd20) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82b5bd20) at __mp_lock+0x122 sys/kern/kern_lock.c:147 intr_handler(ffff80002e1564d0,ffff80000004ad00) at intr_handler+0x5e sys/arch/amd64/amd64/intr.c:532 Xintr_ioapic_edge21_untramp() at Xintr_ioapic_edge21_untramp+0x18f end of kernel end trace frame: 0x7f7fffffb7c0, count: -6 ddb{0}> machine ddbcpu 1 Stopped at igmp_leavegroup+0x80: movl 0x4(%rax),%r12d igmp_leavegroup(ffff800000c7bd00) at igmp_leavegroup+0x80 sys/netinet/igmp.c:521 in_delmulti(ffff800000c7bd00) at in_delmulti+0xb7 sys/netinet/in.c:920 ip_freemoptions(ffff800000c249a0) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1764 in_pcbdetach(fffffd8079207140) at in_pcbdetach+0xf3 sys/netinet/in_pcb.c:584 udp_detach(fffffd806e4063d8) at udp_detach+0x3b sys/netinet/udp_usrreq.c:1263 soclose(fffffd806e4063d8,0) at soclose+0x255 sys/kern/uipc_socket.c:361 soo_close(fffffd807c889260,ffff800024680550) at soo_close+0x40 fdrop(fffffd807c889260,ffff800024680550) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd807c889260,ffff800024680550) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800024680550) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff800024680550,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202 sys_exit(ffff800024680550,ffff80002120a070,ffff80002120a0d0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff80002120a140) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002120a140) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffb7c0, count: 1 ddb{1}> trace igmp_leavegroup(ffff800000c7bd00) at igmp_leavegroup+0x80 sys/netinet/igmp.c:521 in_delmulti(ffff800000c7bd00) at in_delmulti+0xb7 sys/netinet/in.c:920 ip_freemoptions(ffff800000c249a0) at ip_freemoptions+0x4d sys/netinet/ip_output.c:1764 in_pcbdetach(fffffd8079207140) at in_pcbdetach+0xf3 sys/netinet/in_pcb.c:584 udp_detach(fffffd806e4063d8) at udp_detach+0x3b sys/netinet/udp_usrreq.c:1263 soclose(fffffd806e4063d8,0) at soclose+0x255 sys/kern/uipc_socket.c:361 soo_close(fffffd807c889260,ffff800024680550) at soo_close+0x40 fdrop(fffffd807c889260,ffff800024680550) at fdrop+0xc7 sys/kern/kern_descrip.c:1279 closef(fffffd807c889260,ffff800024680550) at closef+0x11c sys/kern/kern_descrip.c:1263 fdfree(ffff800024680550) at fdfree+0xf4 sys/kern/kern_descrip.c:1195 exit1(ffff800024680550,0,0,1) at exit1+0x37d sys/kern/kern_exit.c:202 sys_exit(ffff800024680550,ffff80002120a070,ffff80002120a0d0) at sys_exit+0x16 sys/kern/kern_exit.c:95 syscall(ffff80002120a140) at syscall+0x489 mi_syscall sys/sys/syscall_mi.h:102 [inline] syscall(ffff80002120a140) at syscall+0x489 sys/arch/amd64/amd64/trap.c:585 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffffb7c0, count: -14