panic: bad arg kind: goroutine 24 [running]: github.com/google/syzkaller/prog.clone(0x0, 0x0, 0xc00056f770, 0xc002234450, 0xc002221940) /syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:79 +0x954 github.com/google/syzkaller/prog.(*Prog).Clone(0xc000119c80, 0x8f4571) /syzkaller/gopath/src/github.com/google/syzkaller/prog/clone.go:24 +0x279 github.com/google/syzkaller/prog.resourceCentric(0xcb4120, 0xc001f465a0, 0xc0020a1340, 0x8f1501, 0xc00056f9f0, 0x448dce, 0xc001dff030) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:817 +0xbf github.com/google/syzkaller/prog.(*ResourceType).generate(0xcb4120, 0xc0020a1340, 0xc001f465a0, 0x40, 0x879220, 0xc0020a12e0, 0xc000040380, 0x40) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:650 +0x920 github.com/google/syzkaller/prog.(*randGen).generateArgImpl(0xc0020a1340, 0xc001f465a0, 0x9ae620, 0xcb4120, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:643 +0x506 github.com/google/syzkaller/prog.(*randGen).generateArg(...) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:592 github.com/google/syzkaller/prog.(*randGen).generateArgs(0xc0020a1340, 0xc001f465a0, 0xca6bc0, 0x4, 0x4, 0xc00056fd40, 0x4eeea3, 0xc001954000, 0x4ad6cb3222d8bacb, 0xc00056fd68, ...) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:580 +0x107 github.com/google/syzkaller/prog.(*randGen).generateParticularCall(0xc0020a1340, 0xc001f465a0, 0xceae80, 0x6, 0xc001f465a0, 0xc002086740) /syzkaller/gopath/src/github.com/google/syzkaller/prog/rand.go:524 +0xc6 OpenBSD/amd64 (ci-openbsd-main-7.c.syzkaller.internal) (tty00) login: kernel: protection fault trap, code=0 Stopped at in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic the kernel did not panic ddb> trace in_delmulti(ffbffffffeffffff) at in_delmulti+0x8d sys/netinet/in.c:914 in_purgeaddr(ffff800000a02800) at in_purgeaddr+0x156 sys/netinet/in.c:760 in_ifdetach(ffff8000009ef800) at in_ifdetach+0x74 sys/netinet/in.c:969 if_detach(ffff8000009ef800) at if_detach+0x140 sys/net/if.c:1151 tun_clone_destroy(ffff8000009ef800) at tun_clone_destroy+0x14c sys/net/if_tun.c:320 spec_close(ffff80001d41fde0) at spec_close+0x311 sys/kern/spec_vnops.c:555 VOP_CLOSE(fffffd8062aead00,7,fffffd806c3bea80,ffff8000ffff84f8) at VOP_CLOSE+0xc0 sys/kern/vfs_vops.c:175 vn_closefile(fffffd8055e7cd30,ffff8000ffff84f8) at vn_closefile+0xd3 vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffd8055e7cd30,ffff8000ffff84f8) at vn_closefile+0xd3 sys/kern/vfs_vnops.c:610 fdrop(fffffd8055e7cd30,ffff8000ffff84f8) at fdrop+0xc2 sys/kern/kern_descrip.c:1271 closef(fffffd8055e7cd30,ffff8000ffff84f8) at closef+0x118 sys/kern/kern_descrip.c:1255 fdfree(ffff8000ffff84f8) at fdfree+0x100 sys/kern/kern_descrip.c:1187 exit1(ffff8000ffff84f8,0,d,1) at exit1+0x334 sys/kern/kern_exit.c:196 postsig(ffff8000ffff84f8,d) at postsig+0x4a8 sigexit sys/kern/kern_sig.c:1476 [inline] postsig(ffff8000ffff84f8,d) at postsig+0x4a8 sys/kern/kern_sig.c:1408 userret(ffff8000ffff84f8) at userret+0x159 sys/kern/kern_sig.c:1866 syscall(ffff80001d420260) at syscall+0x42e mi_syscall_return sys/sys/syscall_mi.h:115 [inline] syscall(ffff80001d420260) at syscall+0x42e sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7f7ffffe0930, count: -16 ddb> show registers rdi 0x2 rsi 0 rbp 0xffff80001d41fc10 rbx 0 rdx 0x3 rcx 0x1 rax 0 r8 0xffff800000a02800 r9 0x5 r10 0x9e016ccf8c01eb00 r11 0x5e38eaf7db06ea70 r12 0 r13 0x3 r14 0xffbffffffeffffff r15 0x1 rip 0xffffffff813d2b9d in_delmulti+0x8d cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80001d41fbb0 ss 0x10 in_delmulti+0x8d: movl 0xc(%r14),%r15d ddb> show proc PROC (syz-executor.0) pid=141434 stat=onproc flags process=a proc=2000 pri=50, usrpri=50, nice=20 forw=0xffffffffffffffff, list=0xffff8000ffff4778,0xffff8000ffff2028 process=0xffff80001d39a6d8 user=0xffff80001d41b000, vmspace=0xfffffd806bc09330 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 33763 373137 0 0 3 0x14200 bored sosplice 6178 241276 79507 0 2 0x12 sshd 82204 99662 1 0 3 0x100083 ttyin getty 79507 140841 1 0 3 0x80 select sshd 61135 186862 16383 73 3 0x100090 kqread syslogd 16383 368105 1 0 3 0x100082 netio syslogd 99650 509910 1 77 2 0x100010 dhclient 58367 466636 1 0 3 0x80 poll dhclient 62495 342978 0 0 2 0x14200 zerothread 44669 47619 0 0 3 0x14200 aiodoned aiodoned 30368 492557 0 0 3 0x14200 syncer update 41028 60738 0 0 3 0x14200 cleaner cleaner 32394 382006 0 0 3 0x14200 reaper reaper 91211 317903 0 0 3 0x14200 pgdaemon pagedaemon 61638 412181 0 0 3 0x14200 bored crynlk 72662 436929 0 0 3 0x14200 bored crypto 29727 305248 0 0 3 0x40014200 acpi0 acpi0 93184 397995 0 0 2 0x14200 softnet 14755 149697 0 0 2 0x14200 systqmp 94658 341486 0 0 3 0x14200 bored systq 17721 383093 0 0 2 0x40014200 softclock 52438 65815 0 0 3 0x40014200 idle0 36747 494652 0 0 3 0x14200 bored smr 1 462199 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 9480 6335K 7040K 78643K 10972 0 pcb 13 8K 8K 78643K 29 0 rtable 80 3K 4K 78643K 231 0 ifaddr 56 11K 13K 78643K 88 0 counters 19 16K 16K 78643K 19 0 ioctlops 0 0K 2K 78643K 19 0 iov 0 0K 16K 78643K 27 0 mount 1 1K 1K 78643K 1 0 vnodes 1221 77K 77K 78643K 1328 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 4 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 0K 78643K 43 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1794 195K 288K 78643K 12646 0 file desc 2 4K 25K 78643K 147 0 proc 49 38K 63K 78643K 372 0 subproc 7 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 1K 78643K 33 0 in_multi 34 1K 2K 78643K 51 0 ether_multi 1 0K 0K 78643K 2 0 mrt 0 0K 0K 78643K 2 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 43 201K 201K 78643K 43 0 exec 0 0K 1K 78643K 185 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 61 10K 21K 78643K 1189 0 UVM aobj 20 2K 2K 78643K 20 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 8 0 NDP 9 0K 0K 78643K 17 0 temp 78 2999K 3076K 78643K 8346 0 kqueue 2 2K 18K 78643K 42 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle arp 64 6 0 4 1 0 1 1 0 8 0 rtpcb 80 19 0 17 1 0 1 1 0 8 0 rtentry 112 46 0 16 2 0 2 2 0 8 0 unpcb 120 75 0 67 1 0 1 1 0 8 0 syncache 264 4 0 4 1 1 0 1 0 8 0 tcpqe 32 58 0 58 1 1 0 1 0 8 0 tcpcb 544 56 0 52 1 0 1 1 0 8 0 inpcb 280 297 0 291 2 1 1 2 0 8 0 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 4 0 2 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 ppxss 1128 3 0 3 2 1 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 213 0 43 14 0 14 14 0 8 1 art_table 32 214 0 43 2 0 2 2 0 8 0 art_node 16 45 0 14 1 0 1 1 0 8 0 sysvmsgpl 40 26 0 19 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 41 0 31 1 0 1 1 0 8 0 shmpl 112 18 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino1pl 128 1609 0 210 46 0 46 46 0 8 0 ffsino 240 1609 0 210 83 0 83 83 0 8 0 nchpl 144 2020 0 412 60 0 60 60 0 8 0 uvmvnodes 72 1736 0 0 32 0 32 32 0 8 0 vnodes 208 1736 0 0 92 0 92 92 0 8 0 namei 1024 5161 0 5161 1 0 1 1 0 8 1 scxspl 192 5532 0 5532 1 0 1 1 0 8 1 plimitpl 152 22 0 16 1 0 1 1 0 8 0 sigapl 432 318 0 309 2 0 2 2 0 8 0 futexpl 56 3433 0 3433 1 0 1 1 0 8 1 knotepl 112 104 0 99 1 0 1 1 0 8 0 kqueuepl 104 58 0 57 1 0 1 1 0 8 0 pipepl 112 210 0 204 1 0 1 1 0 8 0 fdescpl 432 319 0 309 2 0 2 2 0 8 0 filepl 120 2016 0 1966 4 0 4 4 0 8 1 lockfpl 104 36 0 35 1 0 1 1 0 8 0 lockfspl 48 17 0 16 1 0 1 1 0 8 0 sessionpl 112 17 0 8 1 0 1 1 0 8 0 pgrppl 48 19 0 10 1 0 1 1 0 8 0 ucredpl 96 149 0 142 1 0 1 1 0 8 0 zombiepl 144 310 0 308 1 0 1 1 0 8 0 processpl 864 334 0 308 4 0 4 4 0 8 0 procpl 632 498 0 472 4 0 4 4 0 8 0 sockpl 384 398 0 382 5 2 3 4 0 8 1 mcl64k 65536 11 0 11 2 1 1 1 0 8 1 mcl16k 16384 1 0 1 1 1 0 1 0 8 0 mcl12k 12288 2 0 2 1 1 0 1 0 8 0 mcl9k 9216 2 0 2 1 1 0 1 0 8 0 mcl8k 8192 8 0 8 2 1 1 1 0 8 1 mcl4k 4096 28 0 28 3 2 1 1 0 8 1 mcl2k 2048 60817 0 60773 15 9 6 13 0 8 0 mtagpl 80 9 0 4 2 1 1 1 0 8 0 mbufpl 256 97094 0 96994 12 3 9 9 0 8 1 bufpl 280 6370 0 1326 361 0 361 361 0 8 0 anonpl 16 46704 0 45567 74 1 73 73 0 107 59 amapchunkpl 152 1331 0 1296 7 1 6 7 0 158 3 amappl16 192 1602 0 1595 50 0 50 50 0 8 47 amappl15 184 50 0 46 1 0 1 1 0 8 0 amappl14 176 91 0 91 1 0 1 1 0 8 1 amappl13 168 9 0 8 1 0 1 1 0 8 0 amappl12 160 6 0 6 1 1 0 1 0 8 0 amappl11 152 47 0 36 1 0 1 1 0 8 0 amappl10 144 13 0 13 1 0 1 1 0 8 1 amappl9 136 593 0 590 1 0 1 1 0 8 0 amappl8 128 156 0 152 1 0 1 1 0 8 0 amappl7 120 92 0 84 1 0 1 1 0 8 0 amappl6 112 54 0 51 1 0 1 1 0 8 0 amappl5 104 170 0 162 1 0 1 1 0 8 0 amappl4 96 538 0 511 1 0 1 1 0 8 0 amappl3 88 181 0 173 1 0 1 1 0 8 0 amappl2 80 1754 0 1701 3 1 2 3 0 8 0 amappl1 72 15401 0 15040 25 15 10 20 0 8 0 amappl 80 724 0 705 2 1 1 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 19 0 0 1 0 1 1 0 8 0 uaddrrnd 24 319 0 309 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 319 0 309 1 0 1 1 0 8 0 vmmpekpl 168 6266 0 6247 2 0 2 2 0 8 0 vmmpepl 168 45622 0 44835 105 13 92 101 0 357 46 vmsppl 272 318 0 309 2 1 1 2 0 8 0 pdppl 4096 644 0 618 6 1 5 6 0 8 0 pvpl 32 152255 0 149536 179 0 179 179 0 265 144 pmappl 200 318 0 309 1 0 1 1 0 8 0 extentpl 40 46 0 29 1 0 1 1 0 8 0 phpool 112 148 0 21 4 0 4 4 0 8 0