panic: kernel diagnostic assertion "sc->sc_dev == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/net/if_tun.c", line 316 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 48125 48089 0 0 0x4000000 1K syz-executor 116108 71295 77 0x100012 0x1 0 dhcpleased db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833716c8) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833afcda,ffffffff833fcb82,13c,ffffffff832f0942) at __assert+0x29 sys/kern/subr_prf.c:-1 tun_clone_destroy(ffff80000148c800) at tun_clone_destroy+0x38a if_clone_destroy(ffff800037c3d6a0) at if_clone_destroy+0x1d5 sys/net/if.c:1389 ifioctl(ffff800001427a80,80206979,ffff800037c3d6a0,ffff80003c477a28) at ifioctl+0x59d sys/net/if.c:2066 sys_ioctl(ffff80003c477a28,ffff800037c3d880,ffff800037c3d7d0) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff800037c3d880) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800037c3d880) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdb8c9fe7700, count: 6 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: kernel diagnostic assertion "sc->sc_dev == 0" failed: file "/syzkaller/managers/multicore/kernel/sys/net/if_tun.c", line 316 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833716c8) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833afcda,ffffffff833fcb82,13c,ffffffff832f0942) at __assert+0x29 sys/kern/subr_prf.c:-1 tun_clone_destroy(ffff80000148c800) at tun_clone_destroy+0x38a if_clone_destroy(ffff800037c3d6a0) at if_clone_destroy+0x1d5 sys/net/if.c:1389 ifioctl(ffff800001427a80,80206979,ffff800037c3d6a0,ffff80003c477a28) at ifioctl+0x59d sys/net/if.c:2066 sys_ioctl(ffff80003c477a28,ffff800037c3d880,ffff800037c3d7d0) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff800037c3d880) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800037c3d880) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdb8c9fe7700, count: -9 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800037c3d450 rbx 0xffff8000299feddf rdx 0xffff8000015cb240 rcx 0xffff80003c477a28 rax 0xffff8000299fdff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x75f109fdd52d8f26 r11 0xdc9e30954b8229cd r12 0xffff8000299febe0 r13 0 r14 0 r15 0x1 rip 0xffffffff821fabb5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800037c3d440 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=48125 pid=48089 tcnt=2 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c4762d0,0xffff80003c476048 process=0xffff80002a2b4e80 user=0xffff800037c38000, vmspace=0xfffffd8073a61b88 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 40161 61231 48920 0 2 0 syz-executor 40161 292704 48920 0 2 0x4000000 syz-executor 73940 247162 2988 0 2 0 syz-executor 73940 61742 2988 0 3 0x4000080 fsleep syz-executor 48089 518384 36092 0 2 0 syz-executor *48089 48125 36092 0 7 0x4000000 syz-executor 78756 392498 77824 0 2 0x100002 sh 55153 373785 28127 0 2 0 syz-executor 55153 510973 28127 0 2 0x4000000 syz-executor 14979 229384 69365 0 2 0 syz-executor 14979 23993 69365 0 2 0x4000000 syz-executor 77824 336940 11462 0 3 0x82 wait syz-executor 75812 494553 59654 0 3 0x3000 suspend syz-executor 75812 161739 59654 0 3 0x4081000 biowait syz-executor 75812 366892 59654 0 3 0x4081000 inode syz-executor 75812 69347 59654 0 3 0x4081000 fltagain2 syz-executor 75812 517258 59654 0 3 0x4081000 pipecl syz-executor 36092 297452 11462 0 3 0x82 nanoslp syz-executor 88735 319706 0 0 3 0x14200 acct acct 48920 475715 11462 0 3 0x82 nanoslp syz-executor 22004 107205 1 0 3 0x100083 ttyin getty 69365 116684 11462 0 2 0x2 syz-executor 11017 333936 0 0 3 0x14200 bored sosplice 28127 209851 11462 0 2 0x2 syz-executor 2988 314179 11462 0 3 0x82 nanoslp syz-executor 59654 255995 11462 0 3 0x82 wait syz-executor 79490 225309 11462 0 3 0x2 biowait syz-executor 11462 505898 92413 0 3 0x82 kqread syz-executor 92413 389276 88193 0 3 0x10008a sigsusp ksh 88193 93870 74131 0 3 0x98 kqread sshd-session 74131 71207 1170 0 3 0x92 kqread sshd-session 1170 282549 1 0 3 0x88 kqread sshd 67412 329420 13312 74 3 0x1100092 bpf pflogd 13312 516114 1 0 3 0x80 sbwait pflogd 83169 133459 77370 73 3 0x1100090 kqread syslogd 77370 14482 1 0 3 0x100082 sbwait syslogd 56282 488350 1 0 3 0x100080 kqread resolvd 71295 116108 31361 77 7 0x100013 dhcpleased 11497 136832 31361 77 3 0x100092 kqread dhcpleased 31361 286450 1 0 3 0x80 kqread dhcpleased 54849 77722 0 0 3 0x14200 bored smr 81817 84739 0 0 2 0x14200 zerothread 53291 132198 0 0 3 0x14200 aiodoned aiodoned 25457 150363 0 0 3 0x14200 syncer update 50542 372499 0 0 3 0x14200 cleaner cleaner 53557 18483 0 0 3 0x14200 reaper reaper 13994 492100 0 0 3 0x14200 pgdaemon pagedaemon 42078 142711 0 0 3 0x14200 bored viomb 18219 85860 0 0 3 0x40014200 acpi0 acpi0 61194 65250 0 0 3 0x40014200 idle1 58721 256832 0 0 3 0x14200 bored softnet7 38479 210808 0 0 3 0x14200 bored softnet6 6019 406189 0 0 3 0x14200 bored softnet5 42361 356779 0 0 3 0x14200 bored softnet4 98574 382422 0 0 3 0x14200 bored softnet3 56556 182770 0 0 3 0x14200 bored softnet2 67677 489750 0 0 3 0x14200 bored softnet1 11628 315267 0 0 3 0x14200 bored softnet0 31394 160173 0 0 3 0x14200 bored systqmp 70928 251319 0 0 3 0x14200 bored systq 2274 106476 0 0 3 0x14200 tmoslp softclockmp 97649 176113 0 0 3 0x40014200 tmoslp softclock 52341 443650 0 0 3 0x40014200 idle0 1 397834 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 48089 (syz-executor) thread 0xffff80003c477a28 (48125) exclusive rwlock clonelk r = 0 (0xffffffff8377f188) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 if_clone_destroy+0x67 sys/net/if.c:-1 #3 ifioctl+0x59d sys/net/if.c:2066 #4 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #5 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #5 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #6 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83960410) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 ifioctl+0x58c sys/net/if.c:2066 #2 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #3 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #4 Xsyscall+0x128 Process 75812 (syz-executor) thread 0xffff80002a332fd8 (161739) exclusive rrwlock inode r = 0 (0xfffffd806e3975c0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vn_write+0x18f sys/kern/vfs_vnops.c:405 #6 dofilewritev+0x242 sys/kern/sys_generic.c:380 #7 sys_write+0xa2 sys/kern/sys_generic.c:300 #8 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 #9 Xsyscall+0x128 Process 79490 (syz-executor) thread 0xffff80002a2c9a08 (225309) exclusive rrwlock inode r = 0 (0xfffffd806ea24b78) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2a2 sys/kern/vfs_subr.c:693 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203 #8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x93a sys/kern/vfs_lookup.c:566 #11 namei+0x7ca sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1868 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806cf78570) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xa3 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x11c sys/kern/vfs_lookup.c:-1 #6 namei+0x7ca sys/kern/vfs_lookup.c:250 #7 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1868 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:746 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10230 11120K 11759K 166960K 13443 0 pcb 17 16K 32K 166960K 664 0 rtable 233 11K 11K 166960K 685 0 pf 39 18K 131089K 166960K 457 0 ifaddr 39 8K 9K 166960K 196 0 ifgroup 59 2K 2K 166960K 386 0 sysctl 4 1K 9K 166960K 20 0 counters 70 37K 37K 166960K 416 0 ioctlops 0 0K 4K 166960K 2252 0 iov 0 0K 32K 166960K 186 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1424 90K 90K 166960K 3443 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 19 0 VM map 2 1K 1K 166960K 2 0 sem 25 11K 11K 166960K 116 0 dirhash 12 2K 2K 166960K 69 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 110K 166960K 2642 0 sigio 0 0K 0K 166960K 79 0 proc 72 115K 180K 166960K 1030 0 subproc 72 4K 4K 166960K 199 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 434 0 in_multi 78 5K 7K 166960K 267 0 ether_multi 1 0K 0K 166960K 32 0 mrt 0 0K 0K 166960K 18 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 103 466K 466K 166960K 103 0 exec 0 0K 1K 166960K 1488 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 6 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 244 177K 194K 166960K 25441 0 UVM aobj 48 2K 4K 166960K 54 0 pinsyscall 42 84K 104K 166960K 3925 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 201 0 NDP 13 0K 1K 166960K 155 0 temp 84 8652K 8905K 166960K 82434 0 kqueue 14 22K 33K 166960K 565 0 SYN cache 2 16K 16K 166960K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 26 0 0 1 0 1 1 0 8 0 rtpcb 120 221 0 218 1 0 1 1 0 8 0 rtentry 176 224 0 132 5 0 5 5 0 8 0 unpcb 144 2446 0 2428 21 16 5 6 0 8 4 syncache 336 11 0 11 5 5 0 1 0 8 0 tcpqe 32 3 0 3 1 1 0 1 0 8 0 tcpcb 736 1067 0 1061 15 14 1 7 0 8 0 arp 136 21 0 10 1 0 1 1 0 8 0 inpcb 328 3271 0 3260 33 29 4 12 0 8 2 nd6 144 38 0 18 1 0 1 1 0 8 0 pkpcb 40 19 0 19 5 5 0 1 0 8 0 kcovpl 48 14 0 6 1 0 1 1 0 8 0 mppekey 1024 7 0 7 4 4 0 1 0 8 0 ppxss 1192 137 0 137 3 3 0 1 0 8 0 pppxif 1504 12 0 12 4 4 0 1 0 8 0 pffrag 232 31 0 24 1 0 1 1 0 482 0 pffrnode 88 27 0 22 1 0 1 1 0 8 0 pffrent 40 149 0 142 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 pfrktable 1344 4 0 4 4 4 0 1 0 8 0 pfstitem 24 158 0 60 1 0 1 1 0 8 0 pfstkey 128 158 0 60 4 0 4 4 0 8 0 pfstate 384 156 0 60 11 0 11 11 0 8 0 pfrule 1344 26 0 21 2 1 1 2 0 8 0 rttmr 136 2 0 2 1 1 0 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 883 0 493 35 9 26 31 0 8 0 art_table 40 886 0 493 5 0 5 5 0 8 0 art_node 32 220 0 136 1 0 1 1 0 8 0 sysvmsgpl 40 18 0 9 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 107 0 84 1 0 1 1 0 8 0 shmpl 112 51 0 6 2 0 2 2 0 8 0 dirhash 1024 56 0 39 3 0 3 3 0 8 0 dino2pl 256 6477 0 4965 97 1 96 96 0 8 0 ffsino 296 6477 0 4965 117 0 117 117 0 8 0 nchpl 144 10083 0 8379 64 0 64 64 0 8 0 rtmask 32 28 0 28 5 5 0 1 0 8 0 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 36500 0 36500 6 5 1 3 0 8 1 percpumem 16 223 0 173 1 0 1 1 0 8 0 kstatmem 264 260 0 230 7 5 2 3 0 8 0 scsiplug 72 8 0 8 5 5 0 1 0 8 0 scxspl 216 58039 0 58037 12 11 1 8 1 8 0 plimitpl 152 689 0 671 1 0 1 1 0 8 0 sigapl 424 2967 0 2912 9 2 7 9 0 8 0 knotepl 120 558 0 0 17 0 17 17 0 8 0 kqueuepl 224 1050 0 1040 11 10 1 7 0 8 0 pipepl 344 501 0 471 12 9 3 9 0 8 0 fdescpl 528 2909 0 2878 3 0 3 3 0 8 0 filepl 160 20441 0 20218 39 24 15 22 0 8 4 lockfpl 104 1126 0 1123 1 0 1 1 0 8 0 lockfspl 48 416 0 413 1 0 1 1 0 8 0 sessionpl 144 39 0 30 1 0 1 1 0 8 0 pgrppl 48 97 0 80 1 0 1 1 0 8 0 ucredpl 104 3650 0 3637 1 0 1 1 0 8 0 zombiepl 144 3569 0 3568 3 2 1 1 0 8 0 processpl 1232 2967 0 2912 6 1 5 6 0 8 0 procpl 664 7035 0 6971 10 3 7 8 0 8 0 sosppl 168 12 0 12 5 5 0 1 0 8 0 sockpl 752 6090 0 6058 69 58 11 17 0 8 7 mcl64k 65536 6 0 0 1 0 1 1 0 8 0 mcl16k 16384 5 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 112 0 0 14 0 14 14 0 8 0 mcl2k 2048 65 0 0 7 1 6 7 0 8 0 mtagpl 96 4 0 0 1 0 1 1 0 8 0 mbufpl 256 1162 0 0 72 0 72 72 0 8 0 bufpl 280 21871 0 15727 440 0 440 440 0 8 0 anonpl 32 14500 0 0 118 1 117 117 0 246 0 amapchunkpl 152 88509 0 87951 61 31 30 39 0 158 5 amappl16 200 10105 0 9891 69 57 12 37 0 8 0 amappl15 192 15 0 15 3 3 0 1 0 8 0 amappl14 184 206 0 194 1 0 1 1 0 8 0 amappl13 176 8 0 8 1 1 0 1 0 8 0 amappl12 168 3663 0 3631 3 1 2 2 0 8 0 amappl11 160 50 0 36 1 0 1 1 0 8 0 amappl10 152 8 0 8 1 1 0 1 0 8 0 amappl9 144 262 0 261 3 2 1 1 0 8 0 amappl8 136 30 0 27 1 0 1 1 0 8 0 amappl7 128 151 0 138 1 0 1 1 0 8 0 amappl6 120 267 0 262 1 0 1 1 0 8 0 amappl5 112 157 0 147 1 0 1 1 0 8 0 amappl4 104 350 0 329 1 0 1 1 0 8 0 amappl3 96 15605 0 15511 4 1 3 3 0 8 0 amappl2 88 3238 0 3157 2 0 2 2 0 8 0 amappl1 80 20521 0 19922 16 1 15 15 0 8 0 amappl 88 24167 0 24000 6 1 5 5 0 92 0 dma32768 32768 1 0 1 1 1 0 1 0 8 0 dma16384 16384 1 0 1 1 1 0 1 0 8 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 8 0 8 3 3 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 53 0 6 1 0 1 1 0 8 0 uaddrrnd 24 2909 0 2878 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2909 0 2878 1 0 1 1 0 8 0 vmmpekpl 168 24271 0 24216 3 0 3 3 0 8 0 vmmpepl 168 187580 0 185374 134 29 105 120 0 357 0 vmsppl 488 2908 0 2878 6 1 5 5 0 8 0 rwobjpl 80 54943 0 47833 148 2 146 147 0 8 0 pdppl 4096 5825 0 5756 124 53 71 85 0 8 2 pvpl 32 20546 0 0 166 0 166 166 0 265 0 pmappl 256 2908 0 2878 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 396 0 96 9 0 9 9 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83823ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff83960208) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83960208) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80002a2a9a80,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff83960208) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83960208) at __mp_lock+0x192 sys/kern/kern_lock.c:165 ktrstruct(ffff8000ffff3a00,ffffffff83393f1b,ffff80002a2a9c60,20) at ktrstruct+0xdf sys/kern/kern_ktrace.c:313 sys_kevent(ffff8000ffff3a00,ffff80002a2a9fe0,ffff80002a2a9f30) at sys_kevent+0x7bf sys/kern/kern_event.c:1327 syscall(ffff80002a2a9fe0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2a9fe0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x717cd41acaf0, count: 4 ddb{0}> trace x86_ipi_db(ffffffff83823ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 x86_ipi_handler() at x86_ipi_handler+0xd9 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff83960208) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83960208) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80002a2a9a80,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff83960208) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83960208) at __mp_lock+0x192 sys/kern/kern_lock.c:165 ktrstruct(ffff8000ffff3a00,ffffffff83393f1b,ffff80002a2a9c60,20) at ktrstruct+0xdf sys/kern/kern_ktrace.c:313 sys_kevent(ffff8000ffff3a00,ffff80002a2a9fe0,ffff80002a2a9f30) at sys_kevent+0x7bf sys/kern/kern_event.c:1327 syscall(ffff80002a2a9fe0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2a9fe0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x717cd41acaf0, count: -11 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833716c8) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833afcda,ffffffff833fcb82,13c,ffffffff832f0942) at __assert+0x29 sys/kern/subr_prf.c:-1 tun_clone_destroy(ffff80000148c800) at tun_clone_destroy+0x38a if_clone_destroy(ffff800037c3d6a0) at if_clone_destroy+0x1d5 sys/net/if.c:1389 ifioctl(ffff800001427a80,80206979,ffff800037c3d6a0,ffff80003c477a28) at ifioctl+0x59d sys/net/if.c:2066 sys_ioctl(ffff80003c477a28,ffff800037c3d880,ffff800037c3d7d0) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff800037c3d880) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800037c3d880) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdb8c9fe7700, count: 6 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833716c8) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833afcda,ffffffff833fcb82,13c,ffffffff832f0942) at __assert+0x29 sys/kern/subr_prf.c:-1 tun_clone_destroy(ffff80000148c800) at tun_clone_destroy+0x38a if_clone_destroy(ffff800037c3d6a0) at if_clone_destroy+0x1d5 sys/net/if.c:1389 ifioctl(ffff800001427a80,80206979,ffff800037c3d6a0,ffff80003c477a28) at ifioctl+0x59d sys/net/if.c:2066 sys_ioctl(ffff80003c477a28,ffff800037c3d880,ffff800037c3d7d0) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff800037c3d880) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff800037c3d880) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:746 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xdb8c9fe7700, count: -9