panic: free: size too large 100 > 16 (0xffff800000c40c40) type rtable Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 174354 87501 0 0x2 0 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834fed06) at panic+0x1e5 sys/kern/subr_prf.c:198 free(ffff800000c40c40,5,64) at free+0x690 sys/kern/kern_malloc.c:387 rtfree(fffffc006a2c5e80) at rtfree+0x367 sys/net/route.c:646 rt_ifa_del(ffff800001611200,800100,ffff800001611268,0) at rt_ifa_del+0x45f sys/net/route.c:-1 in_purgeaddr(ffff800001611200) at in_purgeaddr+0x129 in_remove_prefix sys/netinet/in.c:810 [inline] in_purgeaddr(ffff800001611200) at in_purgeaddr+0x129 in_ifscrub sys/netinet/in.c:636 [inline] in_purgeaddr(ffff800001611200) at in_purgeaddr+0x129 sys/netinet/in.c:751 in_ifdetach(ffff800001598000) at in_ifdetach+0x7e sys/netinet/in.c:1015 if_detach(ffff800001598000) at if_detach+0x2fe sys/net/if.c:1311 tun_clone_destroy(ffff800001598000) at tun_clone_destroy+0x2ce sys/net/if_tun.c:343 if_clone_destroy(ffff80002a2cff90) at if_clone_destroy+0x205 sys/net/if.c:1479 tun_dev_close(5d01,7) at tun_dev_close+0x1d9 sys/net/if_tun.c:526 spec_close(ffff80002a2d0050) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffc00708c3e88,7,fffffc00097fd000,ffff80002a24c018) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffc006cd6a180,ffff80002a24c018) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffc006cd6a180,ffff80002a24c018) at vn_closefile+0x12b sys/kern/vfs_vnops.c:621 end trace frame: 0xffff80002a2d0170, count: 0 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: free: size too large 100 > 16 (0xffff800000c40c40) type rtable ddb{1}> show kasan No such command ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834fed06) at panic+0x1e5 sys/kern/subr_prf.c:198 free(ffff800000c40c40,5,64) at free+0x690 sys/kern/kern_malloc.c:387 rtfree(fffffc006a2c5e80) at rtfree+0x367 sys/net/route.c:646 rt_ifa_del(ffff800001611200,800100,ffff800001611268,0) at rt_ifa_del+0x45f sys/net/route.c:-1 in_purgeaddr(ffff800001611200) at in_purgeaddr+0x129 in_remove_prefix sys/netinet/in.c:810 [inline] in_purgeaddr(ffff800001611200) at in_purgeaddr+0x129 in_ifscrub sys/netinet/in.c:636 [inline] in_purgeaddr(ffff800001611200) at in_purgeaddr+0x129 sys/netinet/in.c:751 in_ifdetach(ffff800001598000) at in_ifdetach+0x7e sys/netinet/in.c:1015 if_detach(ffff800001598000) at if_detach+0x2fe sys/net/if.c:1311 tun_clone_destroy(ffff800001598000) at tun_clone_destroy+0x2ce sys/net/if_tun.c:343 if_clone_destroy(ffff80002a2cff90) at if_clone_destroy+0x205 sys/net/if.c:1479 tun_dev_close(5d01,7) at tun_dev_close+0x1d9 sys/net/if_tun.c:526 spec_close(ffff80002a2d0050) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffc00708c3e88,7,fffffc00097fd000,ffff80002a24c018) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffc006cd6a180,ffff80002a24c018) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffc006cd6a180,ffff80002a24c018) at vn_closefile+0x12b sys/kern/vfs_vnops.c:621 fdrop(fffffc006cd6a180,ffff80002a24c018) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffc006cd6a180,ffff80002a24c018) at closef+0x192 sys/kern/kern_descrip.c:1265 fdfree(ffff80002a24c018) at fdfree+0x116 sys/kern/kern_descrip.c:1196 exit1(ffff80002a24c018,43,0,1) at exit1+0x595 sys/kern/kern_exit.c:215 sys_exit(ffff80002a24c018,ffff80002a2d03c0,ffff80002a2d0310) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a2d03c0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2d03c0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7177d49b0c70, count: -21 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a2cfaf0 rbx 0xffff80002999ee0f rdx 0 rcx 0xffff80002a24c018 rax 0xffff80002999dff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x20f7f8cfaee880d r11 0x26dfe32973b86bc4 r12 0xffff80002999ec10 r13 0 r14 0 r15 0x1 rip 0xffffffff81dc0295 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a2cfae0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=334069 pid=75002 tcnt=0 stat=onproc flags process=a proc=2000 runpri=32, usrpri=85, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=1 forw=0xffffffffffffffff, list=0xffff80002a24c7e0,0xffff80002a24ca88 process=0xffff800045ff74f8 user=0xffff80002a2cb000, vmspace=0xfffffc0070896010 estcpu=35, cpticks=8, pctcpu=0.3, user=0, sys=2, intr=0 ddb{1}> ps PID TID PPID UID S PRLAGS PFLAGS WAIT COMMAND 65111 455956 85445 0 3 0 0x80 nanoslp syz-executor 65111 470298 85445 0 3 0 0x4000080 msgwait syz-executor 65111 43693 85445 0 3 0 0x4000080 fsleep syz-executor 96958 302540 85608 0 3 0x2 0 clonelk syz-executor 17171 336885 85608 0 3 0x2 0 clonelk syz-executor 23357 74226 85608 0 3 0x2 0x80 piperd syz-executor 69568 161973 85608 0 3 0x2 0x80 piperd syz-executor 27513 186797 85608 0 3 0x2 0x80 piperd syz-executor 85445 184048 85608 0 3 0x2 0x80 nanoslp syz-executor 87501 174354 85608 0 7 0x2 0 syz-executor 85608 425212 10413 0 3 0x2 0x80 wait syz-executor 10413 179997 89722 0 3 0x100002 0x88 sigsusp ksh 89722 398680 60745 0 3 0x10 0x88 kqread sshd-session 60745 65977 71785 0 3 0x12 0x80 kqread sshd-session 19912 101688 1 0 3 0x100003 0x80 ttyin getty 71785 444938 1 0 3 0 0x88 kqread sshd 25136 399172 80943 74 3 0x1100012 0x80 bpf pflogd 80943 516570 1 0 3 0 0x80 sbwait pflogd 1356 253487 84569 73 3 0x1100010 0x80 kqread syslogd 84569 433265 1 0 3 0x100002 0x80 sbwait syslogd 20694 312420 1 0 3 0x100000 0x80 kqread resolvd 86625 49719 36611 77 3 0x100012 0x80 kqread dhcpleased 3228 4875 36611 77 3 0x100012 0x80 kqread dhcpleased 36611 459212 1 0 3 0 0x80 kqread dhcpleased 78230 402929 0 0 3 0x14000 0x200 bored smr 29591 221232 0 0 3 0x14000 0x200 pgzero zerothread 45281 391910 0 0 3 0x14000 0x200 aiodoned aiodoned 32442 237625 0 0 3 0x14000 0x200 syncer update 71938 331079 0 0 3 0x14000 0x200 cleaner cleaner 93135 195895 0 0 3 0x14000 0x200 reaper reaper 42457 108787 0 0 3 0x14000 0x200 pgdaemon pagedaemon 40372 73899 0 0 3 0x14000 0x200 bored viomb 34992 289378 0 0 3 0x14000 0x40000200 acpi0 acpi0 29184 426885 0 0 3 0x14000 0x40000200 idle1 90226 208497 0 0 3 0x14000 0x200 bored softnet1 95947 401390 0 0 3 0x14000 0x200 bored softnet0 61799 48910 0 0 2 0x14000 0x200 systqmp 32968 362363 0 0 3 0x14000 0x200 bored systq 90257 263955 0 0 3 0x14000 0x200 tmoslp softclockmp 84400 143569 0 0 3 0x14000 0x40000200 tmoslp softclock 76740 270544 0 0 3 0x14000 0x40000200 idle0 1 435545 0 0 3 0x2 0x80 wait init 0 0 -1 0 3 0x10000 0x200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex /syzkaller/managers/multicore/kernel/sys/kern/kern_malloc.c:96 r = 0 (0xffffffff8398e968) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 mtx_enter+0x4b4 sys/kern/kern_lock.c:487 #2 free+0x9f sys/kern/kern_malloc.c:393 #3 rtfree+0x367 sys/net/route.c:646 #4 rt_ifa_del+0x45f sys/net/route.c:-1 #5 in_purgeaddr+0x129 in_remove_prefix sys/netinet/in.c:810 [inline] #5 in_purgeaddr+0x129 in_ifscrub sys/netinet/in.c:636 [inline] #5 in_purgeaddr+0x129 sys/netinet/in.c:751 #6 in_ifdetach+0x7e sys/netinet/in.c:1015 #7 if_detach+0x2fe sys/net/if.c:1311 #8 tun_clone_destroy+0x2ce sys/net/if_tun.c:343 #9 if_clone_destroy+0x205 sys/net/if.c:1479 #10 tun_dev_close+0x1d9 sys/net/if_tun.c:526 #11 spec_close+0x417 sys/kern/spec_vnops.c:-1 #12 VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 #13 vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:298 [inline] #13 vn_closefile+0x12b sys/kern/vfs_vnops.c:621 #14 fdrop+0x121 sys/kern/kern_descrip.c:1281 #15 closef+0x192 sys/kern/kern_descrip.c:1265 #16 fdfree+0x116 sys/kern/kern_descrip.c:1196 #17 exit1+0x595 sys/kern/kern_exit.c:215 #18 sys_exit+0x1a sys/kern/kern_exit.c:-1 Process 87501 (syz-executor) thread 0xffff80002a24ca78 (174354) exclusive rwlock amaplk r = 0 (0xfffffc006e158b80) #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_check+0x8a9 sys/uvm/uvm_fault.c:834 #3 uvm_fault+0x106 sys/uvm/uvm_fault.c:627 #4 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:194 #5 usertrap+0x430 sys/arch/amd64/amd64/trap.c:648 #6 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffc006fb97108) #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:1880 #3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:693 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:627 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:194 #6 usertrap+0x430 sys/arch/amd64/amd64/trap.c:648 #7 recall_trap+0x8 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11048 12080K 12154K 166960K 12187 0 pcb 17 12K 12K 166960K 26 0 rtable 196 6K 7K 166960K 453 0 pf 29 16K 18K 166960K 65 0 ifaddr 35 6K 8K 166960K 67 0 ifgroup 44 1K 2K 166960K 87 0 sysctl 1 1K 9K 166960K 5 0 counters 66 36K 38K 166960K 94 0 ioctlops 0 0K 4K 166960K 1494 0 iov 0 0K 0K 166960K 1 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1289 81K 81K 166960K 1429 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 4 0 VM map 2 1K 1K 166960K 2 0 sem 7 0K 0K 166960K 7 0 dirhash 12 2K 2K 166960K 15 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 11 37K 93K 166960K 227 0 sigio 0 0K 0K 166960K 1 0 proc 71 115K 180K 166960K 654 0 subproc 72 4K 4K 166960K 117 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 3 0 in_multi 77 5K 6K 166960K 135 0 ether_multi 1 0K 0K 166960K 1 0 mrt 0 0K 0K 166960K 8 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 55 254K 254K 166960K 55 0 exec 0 0K 1K 166960K 430 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 185 158K 168K 166960K 3669 0 UVM aobj 6 2K 2K 166960K 6 0 pinsyscall 36 72K 104K 166960K 1469 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 7 0 NDP 14 0K 2K 166960K 43 0 temp 35 9114K 9120K 166960K 4422 0 kqueue 13 20K 24K 166960K 31 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 28 0 0 1 0 1 1 0 8 0 rtpcb 120 41 0 38 1 0 1 1 0 8 0 rtentry 176 147 0 59 6 0 6 6 0 8 1 unpcb 144 67 0 50 1 0 1 1 0 8 0 syncache 336 5 0 5 1 0 1 1 0 8 1 tcpcb 736 14 0 10 1 0 1 1 0 8 0 arp 136 24 0 10 1 0 1 1 0 8 0 inpcb 328 141 0 134 4 0 4 4 0 8 3 nd6 152 33 0 15 1 0 1 1 0 8 0 pkpcb 40 2 0 2 1 0 1 1 0 8 1 kcovpl 48 13 0 5 1 0 1 1 0 8 0 ppxss 1192 6 0 6 1 0 1 1 0 8 1 pppxif 1576 2 0 2 1 0 1 1 0 8 1 pffrag 232 1 0 0 1 0 1 1 0 482 0 pffrnode 88 1 0 0 1 0 1 1 0 8 0 pffrent 40 1 0 0 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 29 0 0 1 0 1 1 0 8 0 pfstkey 128 29 0 0 1 0 1 1 0 8 0 pfstate 448 29 0 0 4 0 4 4 0 8 0 pfrule 1360 21 0 16 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 0 1 1 0 8 1 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 597 0 229 29 0 29 29 0 8 6 art_table 40 598 0 229 5 0 5 5 0 8 0 art_node 32 147 0 67 1 0 1 1 0 8 0 semapl 72 5 0 0 1 0 1 1 0 8 0 shmpl 112 3 0 0 1 0 1 1 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 1657 0 178 93 0 93 93 0 8 0 ffsino 296 1657 0 178 114 0 114 114 0 8 0 nchpl 144 1895 0 176 64 0 64 64 0 8 0 vnodes 216 1795 0 0 100 0 100 100 0 8 0 namei 1024 7057 0 7057 3 1 2 2 0 8 2 percpumem 16 63 0 14 1 0 1 1 0 8 0 kstatmem 264 45 0 22 3 0 3 3 0 8 1 scxspl 216 8481 0 8481 4 3 1 3 1 8 1 plimitpl 152 41 0 24 1 0 1 1 0 8 0 sigapl 424 534 0 493 7 0 7 7 0 8 1 knotepl 120 364 0 0 12 0 12 12 0 8 0 kqueuepl 224 34 0 24 1 0 1 1 0 8 0 pipepl 344 144 0 117 3 0 3 3 0 8 0 fdescpl 528 518 0 493 3 0 3 3 0 8 0 filepl 160 1968 0 1759 11 0 11 11 0 8 0 lockfpl 104 22 0 20 1 0 1 1 0 8 0 lockfspl 48 11 0 9 1 0 1 1 0 8 0 sessionpl 144 35 0 26 1 0 1 1 0 8 0 pgrppl 48 51 0 34 1 0 1 1 0 8 0 ucredpl 104 153 0 140 1 0 1 1 0 8 0 zombiepl 144 494 0 493 1 0 1 1 0 8 0 processpl 1232 534 0 493 5 0 5 5 0 8 0 procpl 664 619 0 576 6 0 6 6 0 8 0 sockpl 752 317 0 290 7 0 7 7 0 8 4 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 139 0 0 18 0 18 18 0 8 0 mcl2k 2048 18 0 0 3 0 3 3 0 8 0 mextrefs 64 18 0 0 1 0 1 1 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 172 0 0 11 0 11 11 0 8 0 bufpl 272 3393 0 105 220 0 220 220 0 8 0 anonpl 32 7130 0 0 58 0 58 58 0 247 0 amapchunkpl 152 9943 0 9616 22 1 21 21 0 158 2 amappl16 200 1842 0 1829 15 1 14 14 0 8 10 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 469 0 468 1 0 1 1 0 8 0 amappl13 176 133 0 121 1 0 1 1 0 8 0 amappl12 168 787 0 763 2 0 2 2 0 8 0 amappl11 160 3 0 3 1 1 0 1 0 8 0 amappl10 152 67 0 53 1 0 1 1 0 8 0 amappl9 144 275 0 275 1 1 0 1 0 8 0 amappl8 136 110 0 108 1 0 1 1 0 8 0 amappl7 128 155 0 141 1 0 1 1 0 8 0 amappl6 120 196 0 195 1 0 1 1 0 8 0 amappl5 112 96 0 86 1 0 1 1 0 8 0 amappl4 104 299 0 279 1 0 1 1 0 8 0 amappl3 96 1776 0 1710 3 0 3 3 0 8 0 amappl2 88 624 0 553 2 0 2 2 0 8 0 amappl1 80 11015 0 10425 15 0 15 15 0 8 1 amappl 88 2886 0 2772 4 0 4 4 0 92 0 uvmvnodes 80 98 0 0 2 0 2 2 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 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 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 518 0 493 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 518 0 493 1 0 1 1 0 8 0 vmmpekpl 168 6351 0 6296 3 0 3 3 0 8 0 vmmpepl 168 42629 0 41046 95 0 95 95 0 357 7 vmsppl 488 517 0 493 5 0 5 5 0 8 0 rwobjpl 80 15735 0 14764 28 0 28 28 0 8 2 pdppl 4096 1043 0 986 105 28 77 85 0 8 20 pvpl 32 14425 0 0 118 1 117 118 0 265 0 pmappl 256 517 0 493 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 503 0 32 14 0 14 14 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83989ff0) 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(ffffffff83b1dbc0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83b1dbc0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 syscall(ffff80002a2ee630) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80002a2ee630) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7188b60ddb40, count: 9 ddb{0}> trace x86_ipi_db(ffffffff83989ff0) 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(ffffffff83b1dbc0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83b1dbc0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 syscall(ffff80002a2ee630) at syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] syscall(ffff80002a2ee630) at syscall+0xaf4 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7188b60ddb40, count: -6 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(ffffffff834fed06) at panic+0x1e5 sys/kern/subr_prf.c:198 free(ffff800000c40c40,5,64) at free+0x690 sys/kern/kern_malloc.c:387 rtfree(fffffc006a2c5e80) at rtfree+0x367 sys/net/route.c:646 rt_ifa_del(ffff800001611200,800100,ffff800001611268,0) at rt_ifa_del+0x45f sys/net/route.c:-1 in_purgeaddr(ffff800001611200) at in_purgeaddr+0x129 in_remove_prefix sys/netinet/in.c:810 [inline] in_purgeaddr(ffff800001611200) at in_purgeaddr+0x129 in_ifscrub sys/netinet/in.c:636 [inline] in_purgeaddr(ffff800001611200) at in_purgeaddr+0x129 sys/netinet/in.c:751 in_ifdetach(ffff800001598000) at in_ifdetach+0x7e sys/netinet/in.c:1015 if_detach(ffff800001598000) at if_detach+0x2fe sys/net/if.c:1311 tun_clone_destroy(ffff800001598000) at tun_clone_destroy+0x2ce sys/net/if_tun.c:343 if_clone_destroy(ffff80002a2cff90) at if_clone_destroy+0x205 sys/net/if.c:1479 tun_dev_close(5d01,7) at tun_dev_close+0x1d9 sys/net/if_tun.c:526 spec_close(ffff80002a2d0050) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffc00708c3e88,7,fffffc00097fd000,ffff80002a24c018) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffc006cd6a180,ffff80002a24c018) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffc006cd6a180,ffff80002a24c018) at vn_closefile+0x12b sys/kern/vfs_vnops.c:621 end trace frame: 0xffff80002a2d0170, count: 0 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834fed06) at panic+0x1e5 sys/kern/subr_prf.c:198 free(ffff800000c40c40,5,64) at free+0x690 sys/kern/kern_malloc.c:387 rtfree(fffffc006a2c5e80) at rtfree+0x367 sys/net/route.c:646 rt_ifa_del(ffff800001611200,800100,ffff800001611268,0) at rt_ifa_del+0x45f sys/net/route.c:-1 in_purgeaddr(ffff800001611200) at in_purgeaddr+0x129 in_remove_prefix sys/netinet/in.c:810 [inline] in_purgeaddr(ffff800001611200) at in_purgeaddr+0x129 in_ifscrub sys/netinet/in.c:636 [inline] in_purgeaddr(ffff800001611200) at in_purgeaddr+0x129 sys/netinet/in.c:751 in_ifdetach(ffff800001598000) at in_ifdetach+0x7e sys/netinet/in.c:1015 if_detach(ffff800001598000) at if_detach+0x2fe sys/net/if.c:1311 tun_clone_destroy(ffff800001598000) at tun_clone_destroy+0x2ce sys/net/if_tun.c:343 if_clone_destroy(ffff80002a2cff90) at if_clone_destroy+0x205 sys/net/if.c:1479 tun_dev_close(5d01,7) at tun_dev_close+0x1d9 sys/net/if_tun.c:526 spec_close(ffff80002a2d0050) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffc00708c3e88,7,fffffc00097fd000,ffff80002a24c018) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffc006cd6a180,ffff80002a24c018) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:298 [inline] vn_closefile(fffffc006cd6a180,ffff80002a24c018) at vn_closefile+0x12b sys/kern/vfs_vnops.c:621 fdrop(fffffc006cd6a180,ffff80002a24c018) at fdrop+0x121 sys/kern/kern_descrip.c:1281 closef(fffffc006cd6a180,ffff80002a24c018) at closef+0x192 sys/kern/kern_descrip.c:1265 fdfree(ffff80002a24c018) at fdfree+0x116 sys/kern/kern_descrip.c:1196 exit1(ffff80002a24c018,43,0,1) at exit1+0x595 sys/kern/kern_exit.c:215 sys_exit(ffff80002a24c018,ffff80002a2d03c0,ffff80002a2d0310) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a2d03c0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2d03c0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:791 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7177d49b0c70, count: -21