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 300938 71284 0 0 0 0 syz-executor *196282 82270 0 0 0x4000000 1K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83375699) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833b13d6,ffffffff833f8b77,13c,ffffffff832ec94a) at __assert+0x29 sys/kern/subr_prf.c:-1 tun_clone_destroy(ffff800001475000) at tun_clone_destroy+0x38a if_clone_destroy(ffff80002a3bf2c0) at if_clone_destroy+0x1d5 sys/net/if.c:1389 ifioctl(ffff8000016509f8,80206979,ffff80002a3bf2c0,ffff80002a340d48) at ifioctl+0x59d sys/net/if.c:2066 sys_ioctl(ffff80002a340d48,ffff80002a3bf4a0,ffff80002a3bf3f0) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff80002a3bf4a0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3bf4a0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbd33e5b6f0, 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(ffffffff83375699) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833b13d6,ffffffff833f8b77,13c,ffffffff832ec94a) at __assert+0x29 sys/kern/subr_prf.c:-1 tun_clone_destroy(ffff800001475000) at tun_clone_destroy+0x38a if_clone_destroy(ffff80002a3bf2c0) at if_clone_destroy+0x1d5 sys/net/if.c:1389 ifioctl(ffff8000016509f8,80206979,ffff80002a3bf2c0,ffff80002a340d48) at ifioctl+0x59d sys/net/if.c:2066 sys_ioctl(ffff80002a340d48,ffff80002a3bf4a0,ffff80002a3bf3f0) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff80002a3bf4a0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3bf4a0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbd33e5b6f0, count: -9 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a3bf070 rbx 0xffff8000299eeddf rdx 0 rcx 0xffff80002a340d48 rax 0xffff8000299edff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x34729ce1a77ef15b r11 0x2095ebe6a80e6aa9 r12 0xffff8000299eebe0 r13 0 r14 0 r15 0x1 rip 0xffffffff81ad4195 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a3bf060 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=196282 pid=82270 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80002a341a40,0xffff80002a341288 process=0xffff800036825830 user=0xffff80002a3ba000, vmspace=0xfffffd805f5505e0 estcpu=36, cpticks=2, pctcpu=0.0, user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 71284 300938 39935 0 7 0 syz-executor 71284 78184 39935 0 3 0x4000080 fsleep syz-executor 70 429445 36609 60929 2 0x10 syz-executor 70 504134 36609 60929 3 0x4000090 fsleep syz-executor 70 440200 36609 60929 3 0x4000090 fsleep syz-executor 70 262853 36609 60929 3 0x4000090 fsleep syz-executor 82270 265323 50145 0 2 0 syz-executor 82270 7453 50145 0 3 0x4000080 kqsel syz-executor *82270 196282 50145 0 7 0x4000000 syz-executor 967 257695 56970 0 3 0x80 nanoslp syz-executor 967 353580 56970 0 3 0x4000080 ttyin syz-executor 967 224199 56970 0 3 0x4000000 inode syz-executor 967 53431 56970 0 3 0x4000080 fsleep syz-executor 967 441260 56970 0 3 0x4000080 fsleep syz-executor 31589 425481 0 0 3 0x14200 acct acct 23901 180729 51380 0 3 0x82 nanoslp syz-executor 80456 176596 51380 0 3 0x82 nanoslp syz-executor 39935 416944 51380 0 3 0x82 nanoslp syz-executor 89484 497486 51380 0 3 0x82 nanoslp syz-executor 16458 393961 0 0 3 0x14200 bored sosplice 36609 370269 51380 0 3 0x82 nanoslp syz-executor 56970 471988 51380 0 3 0x82 nanoslp syz-executor 48835 410525 51380 0 3 0x82 nanoslp syz-executor 50145 266049 51380 0 3 0x82 nanoslp syz-executor 51380 160690 96868 0 3 0x82 kqread syz-executor 96868 248474 80246 0 3 0x10008a sigsusp ksh 80246 377591 82998 0 3 0x98 kqread sshd-session 82998 325184 8724 0 3 0x92 kqread sshd-session 26739 494232 1 0 3 0x100083 ttyin getty 8724 159624 1 0 3 0x88 kqread sshd 2375 180723 65390 74 3 0x1100092 bpf pflogd 65390 142162 1 0 3 0x80 sbwait pflogd 15344 198605 81952 73 3 0x1100090 kqread syslogd 81952 291683 1 0 3 0x100082 sbwait syslogd 39379 226257 1 0 3 0x100080 kqread resolvd 25012 325257 74317 77 2 0x100092 dhcpleased 88297 367090 74317 77 3 0x100092 kqread dhcpleased 74317 490711 1 0 3 0x80 kqread dhcpleased 61071 510916 0 0 3 0x14200 bored smr 91536 397812 0 0 3 0x14200 pgzero zerothread 13969 320640 0 0 3 0x14200 aiodoned aiodoned 75221 457362 0 0 3 0x14200 syncer update 89678 294727 0 0 3 0x14200 cleaner cleaner 41366 218777 0 0 3 0x14200 reaper reaper 19092 174133 0 0 3 0x14200 pgdaemon pagedaemon 58469 16160 0 0 3 0x14200 bored viomb 36346 22850 0 0 3 0x40014200 acpi0 acpi0 4338 346746 0 0 3 0x40014200 idle1 9264 279382 0 0 3 0x14200 bored softnet7 25616 1539 0 0 3 0x14200 bored softnet6 96378 383077 0 0 3 0x14200 bored softnet5 11120 520846 0 0 3 0x14200 bored softnet4 49042 109431 0 0 3 0x14200 bored softnet3 74102 266793 0 0 3 0x14200 bored softnet2 47237 48962 0 0 3 0x14200 bored softnet1 39071 448507 0 0 3 0x14200 bored softnet0 20698 468326 0 0 3 0x14200 bored systqmp 71925 147982 0 0 3 0x14200 bored systq 35070 143127 0 0 3 0x14200 tmoslp softclockmp 6855 247396 0 0 3 0x40014200 tmoslp softclock 19450 493637 0 0 3 0x40014200 idle0 1 14633 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 71284 (syz-executor) thread 0xffff80002a341278 (300938) exclusive rwlock uobjlk r = 0 (0xfffffd805d1a6028) #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 uvm_fault+0x1e5 sys/uvm/uvm_fault.c:699 #3 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #4 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 #5 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd805f550c98) #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_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1924 #3 uvm_fault_check+0x4a sys/uvm/uvm_fault.c:741 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:677 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 #7 recall_trap+0x8 Process 82270 (syz-executor) thread 0xffff80002a340d48 (196282) exclusive rwlock clonelk r = 0 (0xffffffff837dca28) #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:748 #6 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff8387d388) #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:748 #4 Xsyscall+0x128 Process 967 (syz-executor) thread 0xffff800033008fb0 (353580) exclusive rrwlock inode r = 0 (0xfffffd805de62a28) #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 spec_open+0x2f2 sys/kern/spec_vnops.c:151 #6 VOP_OPEN+0x8b sys/kern/vfs_vops.c:138 #7 vn_open+0x6a0 sys/kern/vfs_vnops.c:177 #8 vndioctl+0xc45 sys/dev/vnd.c:457 #9 VOP_IOCTL+0xac sys/kern/vfs_vops.c:264 #10 vn_ioctl+0xf8 sys/kern/vfs_vnops.c:531 #11 sys_ioctl+0x674 sys/kern/sys_generic.c:-1 #12 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 #13 Xsyscall+0x128 Process 967 (syz-executor) thread 0xffff80002a340580 (224199) exclusive rrwlock inode r = 0 (0xfffffd806e3b75c0) #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 vn_open+0x15a sys/kern/vfs_vnops.c:140 #8 doopenat+0x35b sys/kern/vfs_syscalls.c:1138 #9 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 #10 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10259 11126K 12391K 166960K 14978 0 pcb 17 15K 17K 166960K 655 0 rtable 177 10K 11K 166960K 675 0 pf 43 19K 67486K 166960K 257 0 ifaddr 41 7K 8K 166960K 174 0 ifgroup 67 2K 2K 166960K 294 0 sysctl 4 1K 9K 166960K 29 0 counters 78 38K 38K 166960K 310 0 ioctlops 0 0K 4K 166960K 1901 0 iov 0 0K 32K 166960K 231 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1519 95K 96K 166960K 3740 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 5K 5K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 28 10K 11K 166960K 50 0 dirhash 15 2K 3K 166960K 54 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 236K 166960K 2330 0 sigio 0 0K 0K 166960K 61 0 proc 72 115K 164K 166960K 851 0 subproc 72 4K 4K 166960K 109 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 410 0 in_multi 69 4K 7K 166960K 226 0 ether_multi 1 0K 0K 166960K 19 0 mrt 1 0K 0K 166960K 19 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 241 1076K 1076K 166960K 241 0 exec 0 0K 1K 166960K 641 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 2 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 258 169K 183K 166960K 21692 0 UVM aobj 196 9K 9K 166960K 203 0 pinsyscall 43 86K 100K 166960K 3458 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 143 0 NDP 16 0K 2K 166960K 122 0 temp 84 8652K 8896K 166960K 92309 0 kqueue 14 22K 31K 166960K 455 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 120 205 0 202 2 1 1 2 0 8 0 rtentry 176 211 0 147 5 0 5 5 0 8 0 unpcb 144 1616 0 1592 15 11 4 6 0 8 3 syncache 336 7 0 7 4 4 0 1 0 8 0 tcpqe 32 2 0 2 2 2 0 1 0 8 0 tcpcb 736 715 0 711 16 15 1 7 0 8 0 arp 128 27 0 19 1 0 1 1 0 8 0 inpcb 328 2596 0 2589 25 18 7 12 0 8 6 nd6 144 36 0 21 1 0 1 1 0 8 0 pkpcb 40 20 0 20 4 3 1 1 0 8 1 kcovpl 48 12 0 4 1 0 1 1 0 8 0 ppxss 1192 96 0 93 1 0 1 1 0 8 0 pppxif 1504 5 0 5 4 4 0 1 0 8 0 pffrag 232 18 0 6 1 0 1 1 0 482 0 pffrnode 88 16 0 5 1 0 1 1 0 8 0 pffrent 40 66 0 54 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 pfstitem 24 26 0 22 1 0 1 1 0 8 0 pfstkey 128 26 0 22 1 0 1 1 0 8 0 pfstate 384 26 0 22 3 0 3 3 0 8 0 pfrule 1344 30 0 24 2 1 1 2 0 8 0 rttmr 136 4 0 4 2 1 1 1 0 8 1 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 1025 0 699 35 9 26 30 0 8 0 art_table 40 1029 0 699 5 0 5 5 0 8 0 art_node 32 210 0 156 1 0 1 1 0 8 0 sysvmsgpl 40 13 0 6 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 40 0 14 1 0 1 1 0 8 0 shmpl 112 200 0 7 6 0 6 6 0 8 0 dirhash 1024 45 0 26 3 0 3 3 0 8 0 dino2pl 256 5673 0 4159 96 0 96 96 0 8 0 ffsino 296 5673 0 4159 118 0 118 118 0 8 0 nchpl 144 8931 0 8311 64 39 25 64 0 8 0 rtmask 32 11 0 11 5 4 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 30777 0 30776 1 0 1 1 0 8 0 percpumem 16 170 0 116 1 0 1 1 0 8 0 kstatmem 264 202 0 164 4 1 3 3 0 8 0 scsiplug 72 24 0 24 5 4 1 1 0 8 1 scxspl 216 48121 0 48121 9 8 1 4 1 8 1 plimitpl 152 653 0 633 1 0 1 1 0 8 0 sigapl 424 2592 0 2536 9 2 7 9 0 8 0 knotepl 120 789 0 0 23 0 23 23 0 8 0 kqueuepl 224 1191 0 1179 14 11 3 5 0 8 2 pipepl 344 357 0 326 7 3 4 6 0 8 0 fdescpl 528 2544 0 2512 3 0 3 3 0 8 0 filepl 160 17919 0 17674 28 13 15 19 0 8 2 lockfpl 104 1079 0 1075 1 0 1 1 0 8 0 lockfspl 48 472 0 468 1 0 1 1 0 8 0 sessionpl 144 27 0 18 1 0 1 1 0 8 0 pgrppl 48 108 0 91 1 0 1 1 0 8 0 ucredpl 104 3001 0 2985 1 0 1 1 0 8 0 zombiepl 144 2540 0 2536 1 0 1 1 0 8 0 processpl 1232 2592 0 2536 6 1 5 6 0 8 0 procpl 664 6229 0 6163 11 4 7 8 0 8 0 sosppl 168 7 0 7 3 3 0 1 0 8 0 sockpl 752 4504 0 4470 47 36 11 17 0 8 7 mcl64k 65536 19 0 0 3 0 3 3 0 8 0 mcl16k 16384 2 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 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 113 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 72 0 0 7 0 7 7 0 8 0 mtagpl 96 54 0 0 2 0 2 2 0 8 0 mbufpl 256 340 0 0 20 0 20 20 0 8 0 bufpl 280 19055 0 12912 439 0 439 439 0 8 0 anonpl 32 14473 0 0 118 1 117 118 0 246 0 amapchunkpl 152 75015 0 74458 44 18 26 30 0 158 4 amappl16 200 9334 0 9051 73 50 23 34 0 8 8 amappl15 192 52 0 51 1 0 1 1 0 8 0 amappl14 184 118 0 106 1 0 1 1 0 8 0 amappl13 176 7 0 7 1 1 0 1 0 8 0 amappl12 168 3251 0 3219 3 1 2 2 0 8 0 amappl11 160 49 0 35 1 0 1 1 0 8 0 amappl10 152 85 0 84 3 2 1 1 0 8 0 amappl9 144 252 0 251 1 0 1 1 0 8 0 amappl8 136 27 0 25 1 0 1 1 0 8 0 amappl7 128 137 0 124 1 0 1 1 0 8 0 amappl6 120 225 0 222 1 0 1 1 0 8 0 amappl5 112 140 0 130 1 0 1 1 0 8 0 amappl4 104 302 0 281 1 0 1 1 0 8 0 amappl3 96 15442 0 15316 5 1 4 4 0 8 0 amappl2 88 709 0 642 2 0 2 2 0 8 0 amappl1 80 17791 0 17176 16 1 15 15 0 8 0 amappl 88 20571 0 20390 5 0 5 5 0 92 0 dma8192 8192 1 0 1 1 1 0 1 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 1 0 1 1 1 0 1 0 8 0 dma1024 1024 2 0 1 1 0 1 1 0 8 0 dma256 256 7 0 7 2 2 0 1 0 8 0 dma128 128 263 0 263 6 5 1 1 0 8 1 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 72 202 0 7 4 0 4 4 0 8 0 uaddrrnd 24 2544 0 2512 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2544 0 2512 1 0 1 1 0 8 0 vmmpekpl 168 19439 0 19381 3 0 3 3 0 8 0 vmmpepl 168 163831 0 161452 133 19 114 118 0 357 10 vmsppl 488 2543 0 2512 6 1 5 5 0 8 0 rwobjpl 80 48359 0 41011 156 1 155 155 0 8 4 pdppl 4096 5096 0 5024 108 36 72 84 0 8 0 pvpl 32 24679 0 0 200 1 199 199 0 265 0 pmappl 256 2543 0 2512 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 323 0 69 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83841ff0) 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(ffffffff8387d180) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8387d180) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff8387d180) at __mp_lock+0x190 __mp_lock_spin sys/kern/kern_lock.c:135 [inline] __mp_lock(ffffffff8387d180) at __mp_lock+0x190 sys/kern/kern_lock.c:165 uvm_fault(fffffd805f550b98,5f88d629000,0,1) at uvm_fault+0x1ea sys/uvm/uvm_fault.c:700 upageflttrap(ffff80002a3d33c0,5f88d629000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80002a3d33c0) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7d103a490e00, count: 3 ddb{0}> trace x86_ipi_db(ffffffff83841ff0) 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(ffffffff8387d180) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff8387d180) at __mp_lock+0x192 sys/kern/kern_lock.c:165 softintr_dispatch(0) at softintr_dispatch+0x125 sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:847 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff8387d180) at __mp_lock+0x190 __mp_lock_spin sys/kern/kern_lock.c:135 [inline] __mp_lock(ffffffff8387d180) at __mp_lock+0x190 sys/kern/kern_lock.c:165 uvm_fault(fffffd805f550b98,5f88d629000,0,1) at uvm_fault+0x1ea sys/uvm/uvm_fault.c:700 upageflttrap(ffff80002a3d33c0,5f88d629000) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80002a3d33c0) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7d103a490e00, count: -12 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(ffffffff83375699) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833b13d6,ffffffff833f8b77,13c,ffffffff832ec94a) at __assert+0x29 sys/kern/subr_prf.c:-1 tun_clone_destroy(ffff800001475000) at tun_clone_destroy+0x38a if_clone_destroy(ffff80002a3bf2c0) at if_clone_destroy+0x1d5 sys/net/if.c:1389 ifioctl(ffff8000016509f8,80206979,ffff80002a3bf2c0,ffff80002a340d48) at ifioctl+0x59d sys/net/if.c:2066 sys_ioctl(ffff80002a340d48,ffff80002a3bf4a0,ffff80002a3bf3f0) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff80002a3bf4a0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3bf4a0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbd33e5b6f0, count: 6 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff83375699) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833b13d6,ffffffff833f8b77,13c,ffffffff832ec94a) at __assert+0x29 sys/kern/subr_prf.c:-1 tun_clone_destroy(ffff800001475000) at tun_clone_destroy+0x38a if_clone_destroy(ffff80002a3bf2c0) at if_clone_destroy+0x1d5 sys/net/if.c:1389 ifioctl(ffff8000016509f8,80206979,ffff80002a3bf2c0,ffff80002a340d48) at ifioctl+0x59d sys/net/if.c:2066 sys_ioctl(ffff80002a340d48,ffff80002a3bf4a0,ffff80002a3bf3f0) at sys_ioctl+0x674 sys/kern/sys_generic.c:-1 syscall(ffff80002a3bf4a0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3bf4a0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbd33e5b6f0, count: -9