panic: kernel diagnostic assertion "refs != ~0" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_synch.c", line 951 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8346c5e4) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff83414971,ffffffff8341db09,3b7,ffffffff8341db8c) at __assert+0x29 sys/kern/subr_prf.c:-1 refcnt_finalize(ffff80003c4417b8,ffffffff833601d2) at refcnt_finalize+0x1db sys/kern/kern_synch.c:952 pppx_if_destroy(205b9a,ffff80003c4417b0) at pppx_if_destroy+0x3d sys/net/if_pppx.c:806 pppxclose(205b9a,1,2000,ffff80003bc1a560) at pppxclose+0xa0 sys/net/if_pppx.c:553 spec_close(ffff80002a3a7060) at spec_close+0x412 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80656b6368,1,fffffd80097fb000,ffff80003bc1a560) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806c06f220,ffff80003bc1a560) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806c06f220,ffff80003bc1a560) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806c06f220,ffff80003bc1a560) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806c06f220,ffff80003bc1a560) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003bc1a560) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003bc1a560,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80003bc1a560,ffff80002a3a73d0,ffff80002a3a7320) at sys_exit+0x1a sys/kern/kern_exit.c:-1 end trace frame: 0xffff80002a3a73c0, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: kernel diagnostic assertion "refs != ~0" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_synch.c", line 951 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8346c5e4) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff83414971,ffffffff8341db09,3b7,ffffffff8341db8c) at __assert+0x29 sys/kern/subr_prf.c:-1 refcnt_finalize(ffff80003c4417b8,ffffffff833601d2) at refcnt_finalize+0x1db sys/kern/kern_synch.c:952 pppx_if_destroy(205b9a,ffff80003c4417b0) at pppx_if_destroy+0x3d sys/net/if_pppx.c:806 pppxclose(205b9a,1,2000,ffff80003bc1a560) at pppxclose+0xa0 sys/net/if_pppx.c:553 spec_close(ffff80002a3a7060) at spec_close+0x412 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80656b6368,1,fffffd80097fb000,ffff80003bc1a560) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806c06f220,ffff80003bc1a560) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806c06f220,ffff80003bc1a560) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806c06f220,ffff80003bc1a560) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806c06f220,ffff80003bc1a560) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003bc1a560) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003bc1a560,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80003bc1a560,ffff80002a3a73d0,ffff80002a3a7320) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a3a73d0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3a73d0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e6e07b14ba0, count: -16 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a3a6e30 rbx 0xffffffff83846dd7 cpu_info_full_primary+0x2dd7 rdx 0 rcx 0xffff80003bc1a560 rax 0xffffffff83845ff0 cpu_info_full_primary+0x1ff0 r8 0 r9 0x8080808080808080 r10 0xa186fb455677212e r11 0x63a9a29b0c6d98f5 r12 0xffffffff83846bd8 cpu_info_full_primary+0x2bd8 r13 0 r14 0 r15 0x1 rip 0xffffffff816c61d5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a3a6e20 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=142072 pid=84101 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003bc1a560 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003bc1a7f0,0xffff80003bc1a050 process=0xffff80002a279388 user=0xffff80002a3a2000, vmspace=0xfffffd806c2095b8 estcpu=36, cpticks=4, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 80317 299274 10735 0 2 0 syz-executor 80317 42631 10735 0 3 0x4000080 fsleep syz-executor 21772 113923 7771 0 2 0 syz-executor 21772 280892 7771 0 3 0x4000000 smrbar syz-executor 21772 56514 7771 0 3 0x4000080 fsleep syz-executor 8057 257621 32862 0 2 0 syz-executor 8057 94818 32862 0 3 0x4000080 fsleep syz-executor 41646 208885 75899 0 2 0 syz-executor 41646 460305 75899 0 3 0x4000080 kqpoll syz-executor 41646 43453 75899 0 2 0x4000000 syz-executor 48756 163799 22359 0 2 0x2 ndp 26474 292802 92783 0 2 0 syz-executor 26474 422125 92783 0 3 0x4000080 fsleep syz-executor 26474 394168 92783 0 3 0x4000080 fsleep syz-executor 26474 476688 92783 0 3 0x4000080 fsleep syz-executor 22359 322117 20497 0 3 0x10008a sigsusp sh 20497 411701 3472 0 3 0x82 wait syz-executor 22726 345064 1 0 3 0x100083 ttyin getty 59153 308580 0 0 3 0x14200 acct acct 32862 3486 3472 0 2 0xc82 syz-executor 91953 379407 33617 0 3 0x82 sbwait sshd-session 92783 407695 3472 0 2 0xc82 syz-executor 44644 311784 3472 0 2 0x2 syz-executor 28963 371302 0 0 3 0x14280 nfsidl nfsio 93982 264868 0 0 3 0x14280 nfsidl nfsio 45242 450546 0 0 3 0x14280 nfsidl nfsio 25244 444698 0 0 3 0x14280 nfsidl nfsio 83984 404655 0 0 3 0x14280 nfsidl nfsio 48520 197469 0 0 3 0x14280 nfsidl nfsio 68829 509308 0 0 3 0x14280 nfsidl nfsio 16259 465494 0 0 3 0x14280 nfsidl nfsio 44865 372850 0 0 3 0x14280 nfsidl nfsio 70110 249316 0 0 3 0x14280 nfsidl nfsio 12944 452123 0 0 3 0x14280 nfsidl nfsio 91378 77184 0 0 3 0x14280 nfsidl nfsio 22517 16096 0 0 3 0x14280 nfsidl nfsio 95993 8502 0 0 3 0x14280 nfsidl nfsio 58216 153202 0 0 3 0x14280 nfsidl nfsio 27025 43708 0 0 3 0x14280 nfsidl nfsio 1401 114555 0 0 3 0x14280 nfsidl nfsio 81532 380624 0 0 3 0x14280 nfsidl nfsio 3996 77618 0 0 3 0x14280 nfsidl nfsio 94642 16315 0 0 3 0x14280 nfsidl nfsio 75899 211584 3472 0 2 0xc82 syz-executor 86464 197121 0 0 3 0x14200 bored sosplice 7771 267131 3472 0 3 0x82 nanoslp syz-executor 82266 274295 3472 0 3 0x82 nanoslp syz-executor 10735 484314 3472 0 3 0x82 nanoslp syz-executor 3472 226961 87474 0 3 0x82 kqread syz-executor 87474 219428 61864 0 3 0x10008a sigsusp ksh 61864 328274 78042 0 3 0x98 kqread sshd-session 78042 285600 33617 0 3 0x92 kqread sshd-session 33617 172063 1 0 3 0x88 kqread sshd 32848 361544 41752 74 3 0x1100092 bpf pflogd 41752 353273 1 0 3 0x80 sbwait pflogd 13236 251003 56790 73 3 0x1100090 kqread syslogd 56790 316431 1 0 3 0x100082 sbwait syslogd 80177 84466 1 0 3 0x100080 kqread resolvd 47049 385019 76639 77 3 0x100092 kqread dhcpleased 91944 107865 76639 77 3 0x100092 kqread dhcpleased 76639 419725 1 0 3 0x80 kqread dhcpleased 89202 15525 0 0 3 0x14200 bored smr 44238 252796 0 0 2 0x14200 zerothread 9236 507589 0 0 3 0x14200 aiodoned aiodoned 53093 115248 0 0 3 0x14200 syncer update 9672 495915 0 0 3 0x14200 cleaner cleaner 66461 96932 0 0 2 0x14200 reaper 98040 430787 0 0 3 0x14200 pgdaemon pagedaemon 50905 291408 0 0 3 0x14200 bored viomb 50707 257512 0 0 3 0x40014200 acpi0 acpi0 37085 109177 0 0 7 0x40014200 idle1 69079 46421 0 0 3 0x14200 bored softnet3 39018 325921 0 0 3 0x14200 bored softnet2 69954 89907 0 0 3 0x14200 bored softnet1 8580 4937 0 0 3 0x14200 bored softnet0 7910 36015 0 0 3 0x14200 bored systqmp 90853 391256 0 0 3 0x14200 bored systq 87465 388892 0 0 3 0x14200 tmoslp softclockmp 35458 362488 0 0 2 0x40014200 softclock 96714 226556 0 0 3 0x40014200 idle0 1 523857 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 41646 (syz-executor) thread 0xffff80002a296540 (43453) exclusive rwlock fdlock r = 0 (0xffff800037c038d0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x377 sys/kern/kern_rwlock.c:310 #2 doopenat+0x173 sys/kern/vfs_syscalls.c:-1 #3 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #3 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #4 Xsyscall+0x128 Process 44644 (syz-executor) thread 0xffff800037c0f220 (311784) exclusive rrwlock inode r = 0 (0xfffffd807e2cf0a0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x377 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:605 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 ufs_ihashins+0x4f ufs_ihash sys/ufs/ufs/ufs_ihash.c:-1 [inline] #4 ufs_ihashins+0x4f sys/ufs/ufs/ufs_ihash.c:159 #5 ffs_vget+0x187 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ffs_inode_alloc+0x283 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0x113 sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x102 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3109 #10 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e0532f8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x377 sys/kern/kern_rwlock.c:310 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:605 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_lookup+0x109 sys/kern/vfs_lookup.c:418 #6 namei+0x7aa sys/kern/vfs_lookup.c:250 #7 domkdirat+0x8b sys/kern/vfs_syscalls.c:3094 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #9 Xsyscall+0x128 Process 66461 (reaper) thread 0xffff8000ffffd1f8 (96932) exclusive rwlock kmmaplk r = 0 (0xffffffff83963ba0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x377 sys/kern/kern_rwlock.c:310 #2 vm_map_lock_ln+0x12e sys/uvm/uvm_map.c:5168 #3 uvm_unmap+0x81 sys/uvm/uvm_map.c:1792 #4 km_free+0x87 sys/uvm/uvm_km.c:831 #5 uvm_uarea_free+0x4f sys/uvm/uvm_glue.c:285 #6 reaper+0x1cb sys/kern/kern_exit.c:493 #7 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10242 11244K 12327K 166960K 16403 0 pcb 18 16K 18K 166960K 604 0 rtable 211 10K 10K 166960K 800 0 pf 42 18K 21K 166960K 285 0 ifaddr 43 7K 8K 166960K 181 0 ifgroup 66 2K 2K 166960K 332 0 sysctl 4 1K 9K 166960K 27 0 counters 78 37K 37K 166960K 316 0 ioctlops 0 0K 8K 166960K 1995 0 iov 0 0K 28K 166960K 183 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1522 96K 96K 166960K 4438 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 44 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 163 0 dirhash 15 2K 3K 166960K 75 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 2780 0 sigio 0 0K 0K 166960K 42 0 proc 73 91K 127K 166960K 998 0 subproc 72 4K 4K 166960K 138 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 467 0 in_multi 72 5K 7K 166960K 288 0 ether_multi 1 0K 0K 166960K 24 0 mrt 1 0K 0K 166960K 18 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 97 440K 440K 166960K 97 0 exec 0 0K 1K 166960K 891 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 4K 166960K 11 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 266 170K 182K 166960K 25965 0 UVM aobj 18 2K 2K 166960K 19 0 pinsyscall 46 92K 102K 166960K 4086 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 136 0 NDP 17 0K 2K 166960K 123 0 temp 76 8692K 8828K 166960K 160982 0 kqueue 14 22K 36K 166960K 479 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> 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 120 273 0 270 3 2 1 2 0 8 0 rtentry 176 251 0 165 6 0 6 6 0 8 0 unpcb 144 1742 0 1723 19 15 4 6 0 8 3 syncache 336 16 0 16 7 7 0 1 0 8 0 tcpqe 32 11 0 11 6 6 0 1 0 8 0 tcpcb 736 971 0 962 20 18 2 7 0 8 0 arp 128 42 0 21 1 0 1 1 0 8 0 inpcb 328 2854 0 2839 38 32 6 12 0 8 3 nd6 144 50 0 34 2 1 1 2 0 8 0 pkpcb 40 35 0 35 5 5 0 1 0 8 0 kcovpl 48 15 0 7 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 81 0 78 4 3 1 1 0 8 0 pppxif 1504 20 0 18 7 6 1 1 0 8 0 pffrag 232 11 0 7 1 0 1 1 0 482 0 pffrnode 88 11 0 7 1 0 1 1 0 8 0 pffrent 40 52 0 47 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 2 0 2 2 2 0 1 0 8 0 pfanchor 1288 4 0 0 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 165 0 108 1 0 1 1 0 8 0 pfstkey 128 165 0 108 3 0 3 3 0 8 0 pfstate 384 165 0 108 7 0 7 7 0 8 0 pfrule 1344 36 0 18 3 1 2 2 0 8 0 rttmr 136 4 0 4 4 4 0 1 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 1082 0 750 35 13 22 29 0 8 0 art_table 32 1086 0 750 4 0 4 4 0 8 0 art_node 16 239 0 169 1 0 1 1 0 8 0 sysvmsgpl 40 11 0 6 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 159 0 149 1 0 1 1 0 8 0 shmpl 112 16 0 1 1 0 1 1 0 8 0 dirhash 1024 59 0 40 3 0 3 3 0 8 0 dino2pl 256 6558 0 5042 96 0 96 96 0 8 0 ffsino 288 6558 0 5042 109 0 109 109 0 8 0 nchpl 144 10388 0 8681 64 0 64 64 0 8 0 rtmask 32 13 0 13 6 5 1 1 0 8 1 uvmvnodes 80 5628 0 0 115 0 115 115 0 8 0 vnodes 216 5628 0 0 313 0 313 313 0 8 0 namei 1024 36890 0 36889 3 2 1 2 0 8 0 percpumem 16 173 0 119 1 0 1 1 0 8 0 kstatmem 264 190 0 156 5 2 3 3 0 8 0 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 11 0 11 7 7 0 1 0 8 0 scxspl 216 34740 0 34740 14 13 1 8 1 8 1 plimitpl 152 536 0 519 1 0 1 1 0 8 0 sigapl 424 3076 0 3003 10 1 9 9 0 8 0 knotepl 120 602 0 0 17 0 17 17 0 8 0 kqueuepl 224 1039 0 1028 16 13 3 5 0 8 2 pipepl 336 398 0 371 3 0 3 3 0 8 0 fdescpl 520 3034 0 3001 3 0 3 3 0 8 0 filepl 160 20885 0 20656 43 29 14 20 0 8 1 lockfpl 104 904 0 901 1 0 1 1 0 8 0 lockfspl 48 377 0 374 1 0 1 1 0 8 0 sessionpl 144 44 0 34 1 0 1 1 0 8 0 pgrppl 48 104 0 86 1 0 1 1 0 8 0 ucredpl 104 3079 0 3066 1 0 1 1 0 8 0 zombiepl 144 3838 0 3837 1 0 1 1 0 8 0 processpl 1240 3076 0 3003 6 0 6 6 0 8 0 procpl 656 7212 0 7127 9 1 8 8 0 8 0 srpgc 96 18 0 18 7 6 1 1 0 8 1 sosppl 168 12 0 12 6 6 0 1 0 8 0 sockpl 728 4953 0 4902 50 38 12 20 0 8 6 mcl64k 65536 3 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 1 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 121 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 42 0 0 4 0 4 4 0 8 0 mtagpl 96 121 0 0 3 0 3 3 0 8 0 mbufpl 256 1242 0 0 75 0 75 75 0 8 0 bufpl 280 9777 0 3635 440 1 439 440 0 8 0 anonpl 32 15807 0 0 127 0 127 127 0 246 0 amapchunkpl 152 88397 0 87775 54 24 30 32 0 158 3 amappl16 200 9789 0 9370 86 54 32 35 0 8 2 amappl15 192 9 0 9 1 1 0 1 0 8 0 amappl14 184 153 0 139 1 0 1 1 0 8 0 amappl13 176 9 0 9 2 2 0 1 0 8 0 amappl12 168 3797 0 3764 4 2 2 3 0 8 0 amappl11 160 51 0 36 1 0 1 1 0 8 0 amappl10 152 8 0 7 1 0 1 1 0 8 0 amappl9 144 247 0 247 1 1 0 1 0 8 0 amappl8 136 24 0 21 1 0 1 1 0 8 0 amappl7 128 138 0 123 1 0 1 1 0 8 0 amappl6 120 278 0 272 1 0 1 1 0 8 0 amappl5 112 153 0 143 1 0 1 1 0 8 0 amappl4 104 395 0 374 1 0 1 1 0 8 0 amappl3 96 18531 0 18410 5 1 4 4 0 8 0 amappl2 88 850 0 777 2 0 2 2 0 8 0 amappl1 80 22623 0 21921 18 3 15 16 0 8 0 amappl 88 24641 0 24457 5 0 5 5 0 92 0 dma4096 4096 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 128 259 0 259 5 5 0 1 0 8 0 dma64 64 7 0 7 2 2 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 20 0 19 1 0 1 1 0 8 0 aobjpl 72 18 0 1 1 0 1 1 0 8 0 uaddrrnd 24 3034 0 3001 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3034 0 3001 1 0 1 1 0 8 0 vmmpekpl 168 24399 0 24337 4 1 3 4 0 8 0 vmmpepl 168 196845 0 194277 168 41 127 127 0 357 9 vmsppl 480 3033 0 3001 5 0 5 5 0 8 0 rwobjpl 72 55776 0 48650 136 4 132 134 0 8 0 pdppl 4096 6075 0 6002 119 44 75 83 0 8 2 pvpl 32 24685 0 0 199 1 198 198 0 265 0 pmappl 256 3033 0 3001 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 504 0 88 12 0 12 12 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8346c5e4) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff83414971,ffffffff8341db09,3b7,ffffffff8341db8c) at __assert+0x29 sys/kern/subr_prf.c:-1 refcnt_finalize(ffff80003c4417b8,ffffffff833601d2) at refcnt_finalize+0x1db sys/kern/kern_synch.c:952 pppx_if_destroy(205b9a,ffff80003c4417b0) at pppx_if_destroy+0x3d sys/net/if_pppx.c:806 pppxclose(205b9a,1,2000,ffff80003bc1a560) at pppxclose+0xa0 sys/net/if_pppx.c:553 spec_close(ffff80002a3a7060) at spec_close+0x412 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd80656b6368,1,fffffd80097fb000,ffff80003bc1a560) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806c06f220,ffff80003bc1a560) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806c06f220,ffff80003bc1a560) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806c06f220,ffff80003bc1a560) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806c06f220,ffff80003bc1a560) at closef+0x192 sys/kern/kern_descrip.c:1251 fdfree(ffff80003bc1a560) at fdfree+0x116 sys/kern/kern_descrip.c:1182 exit1(ffff80003bc1a560,0,0,1) at exit1+0x59c sys/kern/kern_exit.c:215 sys_exit(ffff80003bc1a560,ffff80002a3a73d0,ffff80002a3a7320) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80002a3a73d0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a3a73d0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e6e07b14ba0, count: -16 ddb{0}> machine ddbcpu 1