panic: bad arg kind: goroutine 28 [running]: github.com/google/syzkaller/prog.clone(0x0, 0x0, 0xc001073250, 0xc001eff7d0, 0xc001072e98) /syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:79 +0x91b github.com/google/syzkaller/prog.clone(0x9b07e0, 0xc000627f60, 0xc001073250, 0x0, 0xc001072f98) /syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:57 +0x18d github.com/google/syzkaller/prog.clone(0x9b0820, 0xc00051ec00, 0xc001073250, 0x9b0760, 0xc001f10b40) /syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:44 +0x567 github.com/google/syzkaller/prog.clone(0x9b07e0, 0xc000627f80, 0xc001073250, 0xc0010732d8, 0xc001073198) /syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:57 +0x18d github.com/google/syzkaller/prog.clone(0x9b0820, 0xc00051ec30, 0xc001073250, 0x9b0760, 0xc001f10b20) /syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:44 +0x567 github.com/google/syzkaller/prog.(*Prog).Clone(0xc000421d80, 0x8fe58d) /syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:24 +0x279 github.com/google/syzkaller/prog.(*randGen).resourceCentric(0xc002547640, 0xc002a68960, 0xca88e0, 0x0, 0x8973a0, 0x1, 0xc001b89200, 0xc0026094f0, 0x792919) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:845 +0xc2 github.com/google/syzkaller/prog.(*ResourceType).generate(0xca88e0, 0xc002547640, 0xc002a68960, 0x0, 0x9b0760, 0xc001b89200, 0x0, 0x0, 0x0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:675 +0x27c github.com/google/syzkaller/prog.(*randGen).generateArgImpl(0xc002547640, 0xc002a68960, 0x9b6a20, 0xca88e0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:664 +0x450 github.com/google/syzkaller/prog.(*randGen).generateArg(...) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:614 github.com/google/syzkaller/prog.(*randGen).generateArgs(0xc002547640, 0xc002a68960, 0xd36f80, 0xc, 0xc, 0xaaaaaaaaaaaaaa00, 0x38, 0x8, 0x5, 0x6, ...) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:602 +0x116 github.com/google/syzkaller/prog.(*StructType).generate(0xcb1fa0, 0xc002547640, 0xc002a68960, 0x0, 0xd6efe0, 0x40be26, 0xc000b60680, 0x20, 0x20) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:786 +0x7c github.com/google/syzkaller/prog.(*randGen).generateArgImpl(0xc002547640, 0xc002a68960, 0x9b6ae0, 0xcb1fa0, 0x760000, 0x0, 0x0, 0x0, 0x0, 0x0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:664 +0x450 github.com/google/syzkaller/prog.(*randGen).generateArg(...) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:614 github.com/google/syzkaller/prog.(*randGen).generateArgs(0xc002547640, 0xc002a68960, 0xcb2120, 0x2, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, ...) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:602 +0x116 github.com/google/syzkaller/prog.(*StructType).generate(0xcb20e0, 0xc002547640, 0xc002a68960, 0x0, 0xd6efe0, 0x78b7c1, 0xc0025474c0, 0x21, 0x2) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:786 +0x7c github.com/google/syzkaller/prog.(*randGen).generateArgImpl(0xc002547640, 0xc002a68960, 0x9b6ae0, 0xcb20e0, 0xd60000, 0x0, 0x0, 0x0, 0x0, 0x0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:664 +0x450 github.com/google/syzkaller/prog.(*randGen).generateArg(...) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:614 github.com/google/syzkaller/prog.(*UnionType).mutate(0xcab520, 0xc002547640, 0xc002a68960, 0x9b08a0, 0xc0025475e0, 0xc002547508, 0xcb0f20, 0x2, 0x2, 0xc0013818f0, ...) /syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:474 +0x178 github.com/google/syzkaller/prog.(*Target).mutateArg(0xc0000fe000, 0xc002547640, 0xc002a68960, 0x9b08a0, 0xc0025475e0, 0xc002547508, 0xcb0f20, 0x2, 0x2, 0xc0013818f0, ...) /syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:246 +0xe3 github.com/google/syzkaller/prog.(*mutator).mutateArg(0xc001073ec0, 0xa) /syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:183 +0x322 github.com/google/syzkaller/prog.(*Prog).Mutate(0xc0009bc600, 0x9a9ba0, 0xc001e78e10, 0x14, 0xc001e2da40, 0xc00229e000, 0x1fde, 0x2400) /syzkaller/gopath/src/github.com/google/syzkaller/prog/mutation.go:47 +0x32c main.(*Proc).loop(0xc001e2da80) /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:95 +0x434 created by main.main /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:258 +0x1155 "" OpenBSD/amd64 (ci-openbsd-multicore-2.c.syzkaller.internal) (tty00) login: uvm_fault(0xfffffd807f0008a0, 0xd, 0, 1) -> e kernel: page fault trap, code=0 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic kernel page fault uvm_fault(0xfffffd807f0008a0, 0xd, 0, 1) -> e in_delmulti(1) at in_delmulti+0x8d sys/netinet/in.c:914 end trace frame: 0xffff800020f6ae00, count: 0 ddb{1}> trace in_delmulti(1) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000a42b00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff8000009d6000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff8000009d6000) at if_detach+0x140 sys/net/if.c:1149 tun_clone_destroy(ffff8000009d6000) at tun_clone_destroy+0x1f2 sys/net/if_tun.c:329 tun_dev_close(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:480 spec_close(ffff800020f6afe0) at spec_close+0x311 sys/kern/spec_vnops.c:555 VOP_CLOSE(fffffd806e2ec008,7,fffffd807f7bf3c0,ffff800020e6dd48) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8068bf5ac8,ffff800020e6dd48) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8068bf5ac8,ffff800020e6dd48) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8068bf5ac8,ffff800020e6dd48) at fdrop+0xc2 sys/kern/kern_descrip.c:1276 closef(fffffd8068bf5ac8,ffff800020e6dd48) at closef+0x11c sys/kern/kern_descrip.c:1260 fdfree(ffff800020e6dd48) at fdfree+0x101 sys/kern/kern_descrip.c:1192 exit1(ffff800020e6dd48,0,d,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800020e6dd48,d) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800020e6dd48,d) at postsig+0x4ed sys/kern/kern_sig.c:1415 userret(ffff800020e6dd48) at userret+0x199 sys/kern/kern_sig.c:1867 syscall(ffff800020f6b460) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800020f6b460) at syscall+0x55f sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff13a0, count: -17 ddb{1}> show registers rdi 0x2 rsi 0 rbp 0xffff800020f6adb0 rbx 0 rdx 0xffff800020e6dd48 rcx 0 rax 0 r8 0xffffffff821244c3 rt_ifa_purge+0x153 r9 0x5 r10 0x2f r11 0x47818fc0d63160e9 r12 0 r13 0x3 r14 0x1 r15 0x1 rip 0xffffffff81280bbd in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff800020f6ad50 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> show proc PROC (syz-executor.0) pid=156131 stat=onproc flags process=a proc=2000 pri=32, usrpri=77, nice=20 forw=0xffffffffffffffff, list=0xffff800020ed1d50,0xffff800020ec7af8 process=0xffff800020e80f70 user=0xffff800020f66000, vmspace=0xfffffd807f0008a0 estcpu=36, cpticks=3, pctcpu=0.0 user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 92233 79689 1 0 3 0x100083 ttyin getty 79600 330454 0 0 3 0x14200 acct acct 13125 119770 0 0 3 0x14200 bored sosplice 89056 165464 38219 0 2 0x100002 ksh 38219 378493 19472 0 3 0x92 select sshd 19472 26166 1 0 3 0x80 select sshd 21647 367916 14572 74 3 0x100092 bpf pflogd 14572 158234 1 0 3 0x80 netio pflogd 68449 246458 33737 73 3 0x100090 kqread syslogd 33737 484628 1 0 3 0x100082 netio syslogd 85166 175778 1 77 2 0x100090 dhclient 19872 162881 1 0 3 0x80 poll dhclient 41210 430509 0 0 3 0x14200 bored smr 90112 405823 0 0 2 0x14200 zerothread 23202 388298 0 0 3 0x14200 aiodoned aiodoned 94554 102047 0 0 3 0x14200 syncer update 76713 364905 0 0 3 0x14200 cleaner cleaner 41035 305705 0 0 3 0x14200 reaper reaper 73055 458529 0 0 3 0x14200 pgdaemon pagedaemon 36912 407462 0 0 3 0x14200 bored crynlk 12980 477372 0 0 3 0x14200 bored crypto 5933 463883 0 0 3 0x40014200 acpi0 acpi0 41687 309340 0 0 3 0x40014200 idle1 65225 66896 0 0 3 0x14200 bored softnet 57759 380041 0 0 2 0x14200 systqmp 83154 266266 0 0 3 0x14200 bored systq 19457 382267 0 0 3 0x40014200 bored softclock 21939 81226 0 0 3 0x40014200 idle0 1 297224 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 9493 6407K 7053K 78643K 11248 0 pcb 13 8K 8K 78643K 95 0 rtable 88 3K 4K 78643K 272 0 ifaddr 68 15K 15K 78643K 122 0 counters 43 33K 34K 78643K 63 0 ioctlops 0 0K 4K 78643K 1481 0 iov 0 0K 16K 78643K 22 0 mount 1 1K 1K 78643K 1 0 vnodes 1224 77K 77K 78643K 1408 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 7 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 32 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1823 197K 290K 78643K 12980 0 file desc 3 8K 25K 78643K 311 0 sigio 0 0K 0K 78643K 2 0 proc 62 63K 95K 78643K 457 0 subproc 14 0K 2K 78643K 34 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 54 0 in_multi 74 3K 3K 78643K 143 0 ether_multi 1 0K 0K 78643K 15 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 37 175K 175K 78643K 37 0 exec 0 0K 1K 78643K 227 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 78 68K 72K 78643K 2067 0 UVM aobj 15 4K 4K 78643K 15 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 74 0 NDP 9 0K 0K 78643K 24 0 temp 107 3046K 3110K 78643K 9996 0 kqueue 2 2K 20K 78643K 27 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 7 0 3 1 0 1 1 0 8 0 plcache 128 20 0 0 1 0 1 1 0 8 0 rtpcb 80 45 0 43 1 0 1 1 0 8 0 rtentry 112 51 0 17 2 0 2 2 0 8 0 unpcb 120 505 0 495 1 0 1 1 0 8 0 syncache 264 12 0 12 2 1 1 1 0 8 1 tcpqe 32 183 0 183 2 2 0 1 0 8 0 tcpcb 544 154 0 151 1 0 1 1 0 8 0 inpcb 280 459 0 453 3 1 2 2 0 8 1 nd6 48 7 0 4 1 0 1 1 0 8 0 ppxss 1128 7 0 7 1 1 0 1 0 8 0 pffrag 232 2 0 2 1 1 0 1 0 482 0 pffrnode 88 2 0 2 1 1 0 1 0 8 0 pffrent 40 6 0 6 1 1 0 1 0 8 0 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 39 0 7 1 0 1 1 0 8 0 pfstkey 112 39 0 7 1 0 1 1 0 8 0 pfstate 328 39 0 7 3 0 3 3 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 219 0 64 13 0 13 13 0 8 0 art_table 32 221 0 64 2 0 2 2 0 8 0 art_node 16 50 0 14 1 0 1 1 0 8 0 sysvmsgpl 40 59 0 28 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 30 0 20 1 0 1 1 0 8 0 shmpl 112 13 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1813 0 406 89 0 89 89 0 8 0 ffsino 272 1813 0 406 95 0 95 95 0 8 0 nchpl 144 2531 0 926 60 0 60 60 0 8 0 uvmvnodes 72 2004 0 0 37 0 37 37 0 8 0 vnodes 208 2004 0 0 106 0 106 106 0 8 0 namei 1024 6807 0 6807 1 0 1 1 0 8 1 percpumem 16 42 0 10 1 0 1 1 0 8 0 vcpupl 1984 5 0 0 1 0 1 1 0 8 0 vmpool 560 6 0 1 1 0 1 1 0 8 0 scxspl 192 6674 0 6674 9 7 2 7 0 8 2 plimitpl 152 36 0 28 1 0 1 1 0 8 0 sigapl 424 529 0 498 4 0 4 4 0 8 0 futexpl 56 5335 0 5335 1 0 1 1 0 8 1 knotepl 112 106 0 101 2 1 1 2 0 8 0 kqueuepl 144 71 0 70 1 0 1 1 0 8 0 pipelkpl 48 123 0 115 1 0 1 1 0 8 0 pipepl 120 246 0 235 1 0 1 1 0 8 0 fdescpl 496 512 0 498 3 0 3 3 0 8 0 filepl 152 3415 0 3347 6 1 5 6 0 8 1 lockfpl 104 86 0 85 1 0 1 1 0 8 0 lockfspl 48 30 0 29 1 0 1 1 0 8 0 sessionpl 112 19 0 8 1 0 1 1 0 8 0 pgrppl 48 25 0 14 1 0 1 1 0 8 0 ucredpl 96 266 0 257 1 0 1 1 0 8 0 zombiepl 144 500 0 498 1 0 1 1 0 8 0 processpl 984 529 0 498 5 0 5 5 0 8 0 procpl 624 1276 0 1245 4 0 4 4 0 8 0 sosppl 128 14 0 14 2 2 0 1 0 8 0 sockpl 400 1015 0 997 6 2 4 5 0 8 2 mcl64k 65536 4 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 9 0 0 2 0 2 2 0 8 0 mcl2k2 2112 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 233 0 0 29 0 29 29 0 8 0 mtagpl 80 41 0 0 1 0 1 1 0 8 0 mbufpl 256 527 0 0 32 0 32 32 0 8 0 bufpl 280 3950 0 132 273 0 273 273 0 8 0 anonpl 16 63328 0 62030 78 6 72 72 0 124 56 amapchunkpl 152 2829 0 2790 8 2 6 8 0 158 3 amappl16 192 2528 0 2512 58 20 38 49 0 8 32 amappl15 184 2 0 2 2 1 1 1 0 8 1 amappl14 176 25 0 22 1 0 1 1 0 8 0 amappl13 168 33 0 31 1 0 1 1 0 8 0 amappl12 160 17 0 14 2 1 1 1 0 8 0 amappl11 152 196 0 180 1 0 1 1 0 8 0 amappl10 144 156 0 153 1 0 1 1 0 8 0 amappl9 136 382 0 381 1 0 1 1 0 8 0 amappl8 128 351 0 349 2 0 2 2 0 8 1 amappl7 120 256 0 247 1 0 1 1 0 8 0 amappl6 112 170 0 170 1 0 1 1 0 8 1 amappl5 104 418 0 400 1 0 1 1 0 8 0 amappl4 96 500 0 473 1 0 1 1 0 8 0 amappl3 88 105 0 99 1 0 1 1 0 8 0 amappl2 80 3154 0 3093 2 0 2 2 0 8 0 amappl1 72 21586 0 21167 24 14 10 18 0 8 0 amappl 80 1521 0 1492 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 14 0 0 1 0 1 1 0 8 0 uaddrrnd 24 518 0 499 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 518 0 499 1 0 1 1 0 8 0 vmmpekpl 168 8353 0 8319 2 0 2 2 0 8 0 vmmpepl 168 69230 0 68269 111 12 99 99 0 357 40 vmsppl 368 517 0 499 3 0 3 3 0 8 1 pdppl 4096 1044 0 1003 7 0 7 7 0 8 1 pvpl 32 198082 0 194934 180 5 175 175 0 265 129 pmappl 232 517 0 499 2 0 2 2 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 294 0 5 9 0 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1a: addq $0x8,%rsp ddb{0}> trace x86_ipi_db(ffffffff8248cff0) 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 __mp_lock(ffffffff82662600) at __mp_lock+0x12e __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82662600) at __mp_lock+0x12e sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82662600,2) at __mp_acquire_count+0x51 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x392 sys/kern/sched_bsd.c:435 sleep_finish(ffff800023190fd8,1) at sleep_finish+0x113 sys/kern/kern_synch.c:418 cond_wait(ffff800023191058,ffffffff821f34c0) at cond_wait+0x76 sys/kern/kern_synch.c:907 smr_barrier_impl(0) at smr_barrier_impl+0xf9 sys/kern/kern_smr.c:271 tun_clone_destroy(ffff800000a2a000) at tun_clone_destroy+0x136 sys/net/if_tun.c:312 tun_dev_close(5d01,7) at tun_dev_close+0x160 sys/net/if_tun.c:480 spec_close(ffff8000231911c0) at spec_close+0x311 sys/kern/spec_vnops.c:555 VOP_CLOSE(fffffd806e2ec0d8,7,fffffd807f7bf3c0,ffff800020ec7ae8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8068bf5bf8,ffff800020ec7ae8) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8068bf5bf8,ffff800020ec7ae8) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8068bf5bf8,ffff800020ec7ae8) at fdrop+0xc2 sys/kern/kern_descrip.c:1276 closef(fffffd8068bf5bf8,ffff800020ec7ae8) at closef+0x11c sys/kern/kern_descrip.c:1260 fdfree(ffff800020ec7ae8) at fdfree+0x101 sys/kern/kern_descrip.c:1192 exit1(ffff800020ec7ae8,0,d,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800020ec7ae8,d) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800020ec7ae8,d) at postsig+0x4ed sys/kern/kern_sig.c:1415 userret(ffff800020ec7ae8) at userret+0x199 sys/kern/kern_sig.c:1867 syscall(ffff800023191640) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800023191640) at syscall+0x55f sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff22b0, count: -22 ddb{0}> machine ddbcpu 1 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb{1}> trace in_delmulti(1) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000a42b00) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff8000009d6000) at in_ifdetach+0x74 sys/netinet/in.c:971 if_detach(ffff8000009d6000) at if_detach+0x140 sys/net/if.c:1149 tun_clone_destroy(ffff8000009d6000) at tun_clone_destroy+0x1f2 sys/net/if_tun.c:329 tun_dev_close(5d00,7) at tun_dev_close+0x160 sys/net/if_tun.c:480 spec_close(ffff800020f6afe0) at spec_close+0x311 sys/kern/spec_vnops.c:555 VOP_CLOSE(fffffd806e2ec008,7,fffffd807f7bf3c0,ffff800020e6dd48) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:174 vn_closefile(fffffd8068bf5ac8,ffff800020e6dd48) at vn_closefile+0xd7 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8068bf5ac8,ffff800020e6dd48) at vn_closefile+0xd7 sys/kern/vfs_vnops.c:614 fdrop(fffffd8068bf5ac8,ffff800020e6dd48) at fdrop+0xc2 sys/kern/kern_descrip.c:1276 closef(fffffd8068bf5ac8,ffff800020e6dd48) at closef+0x11c sys/kern/kern_descrip.c:1260 fdfree(ffff800020e6dd48) at fdfree+0x101 sys/kern/kern_descrip.c:1192 exit1(ffff800020e6dd48,0,d,1) at exit1+0x32c sys/kern/kern_exit.c:197 postsig(ffff800020e6dd48,d) at postsig+0x4ed sigexit sys/kern/kern_sig.c:1483 [inline] postsig(ffff800020e6dd48,d) at postsig+0x4ed sys/kern/kern_sig.c:1415 userret(ffff800020e6dd48) at userret+0x199 sys/kern/kern_sig.c:1867 syscall(ffff800020f6b460) at syscall+0x55f mi_syscall_return sys/sys/syscall_mi.h:129 [inline] syscall(ffff800020f6b460) at syscall+0x55f sys/arch/amd64/amd64/trap.c:592 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7fffff13a0, count: -17