panic: kernel diagnostic assertion "refs != ~0" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_synch.c", line 995 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 288594 25818 0 0 0x4000000 0 syz-executor *390801 97229 0 0 0x4000000 1 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834653c8) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff83411804,ffffffff83414777,3e3,ffffffff834147bf) at __assert+0x29 sys/kern/subr_prf.c:-1 refcnt_finalize(ffff80002f3db4f0,ffffffff8335a6a1) at refcnt_finalize+0x1c8 sys/kern/kern_synch.c:996 pppx_if_destroy(ffff8000327f5000,ffff80002f3db4e8) at pppx_if_destroy+0x3d sys/net/if_pppx.c:806 pppxclose(205b9a,1,2000,ffff8000317f2028) at pppxclose+0xa0 sys/net/if_pppx.c:553 spec_close(ffff80002a321d30) at spec_close+0x412 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805e1368b0,1,fffffd80097fb548,ffff8000317f2028) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806ac02e08,ffff8000317f2028) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806ac02e08,ffff8000317f2028) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806ac02e08,ffff8000317f2028) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806ac02e08,ffff8000317f2028) at closef+0x192 sys/kern/kern_descrip.c:1251 syscall(ffff80002a321f90) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a321f90) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5d65a393de0, count: 2 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 "refs != ~0" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_synch.c", line 995 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834653c8) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff83411804,ffffffff83414777,3e3,ffffffff834147bf) at __assert+0x29 sys/kern/subr_prf.c:-1 refcnt_finalize(ffff80002f3db4f0,ffffffff8335a6a1) at refcnt_finalize+0x1c8 sys/kern/kern_synch.c:996 pppx_if_destroy(ffff8000327f5000,ffff80002f3db4e8) at pppx_if_destroy+0x3d sys/net/if_pppx.c:806 pppxclose(205b9a,1,2000,ffff8000317f2028) at pppxclose+0xa0 sys/net/if_pppx.c:553 spec_close(ffff80002a321d30) at spec_close+0x412 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805e1368b0,1,fffffd80097fb548,ffff8000317f2028) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806ac02e08,ffff8000317f2028) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806ac02e08,ffff8000317f2028) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806ac02e08,ffff8000317f2028) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806ac02e08,ffff8000317f2028) at closef+0x192 sys/kern/kern_descrip.c:1251 syscall(ffff80002a321f90) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a321f90) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5d65a393de0, count: -13 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a321b00 rbx 0xffff8000299dedd7 rdx 0xffff80000147d400 rcx 0xffff8000317f2028 rax 0xffff8000299ddff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x59f15f2c929b80dc r11 0xe950606a56435ec9 r12 0xffff8000299debd8 r13 0 r14 0 r15 0x1 rip 0xffffffff820a7645 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80002a321af0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=390801 pid=97229 tcnt=4 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=85, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffff0540,0xffffffff83a03a48 process=0xffff8000fffe2130 user=0xffff80002a31d000, vmspace=0xfffffd806ef071e8 estcpu=35, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 25818 451196 76074 0 2 0 syz-executor 25818 288594 76074 0 7 0x4000000 syz-executor 25818 74273 76074 0 3 0x4000080 fsleep syz-executor 97229 306710 4527 0 2 0 syz-executor 97229 213263 4527 0 3 0x4000080 ttyretype syz-executor 97229 172119 4527 0 3 0x4000000 smrbar syz-executor *97229 390801 4527 0 7 0x4000000 syz-executor 74229 411435 48106 0 3 0x80 nanoslp syz-executor 74229 172966 48106 0 3 0x4000080 kqpoll syz-executor 74229 311720 48106 0 3 0x4000080 fsleep syz-executor 19052 517842 38609 0 3 0x80 nanoslp syz-executor 19052 502476 38609 0 3 0x4000080 ttyout syz-executor 19052 138388 38609 0 3 0x4000080 ttyout syz-executor 19052 329869 38609 0 3 0x4000080 fsleep syz-executor 62760 121679 0 0 3 0x14200 acct acct 968 508172 85863 0 2 0x2 syz-executor 40094 329035 0 0 3 0x14280 nfsidl nfsio 3555 78794 0 0 3 0x14280 nfsidl nfsio 80394 10308 0 0 3 0x14280 nfsidl nfsio 81827 300544 0 0 3 0x14280 nfsidl nfsio 74940 249385 0 0 3 0x14280 nfsidl nfsio 39637 406475 0 0 3 0x14280 nfsidl nfsio 20827 39164 0 0 3 0x14280 nfsidl nfsio 65047 415678 0 0 3 0x14280 nfsidl nfsio 2383 229633 0 0 3 0x14280 nfsidl nfsio 4013 492837 0 0 3 0x14280 nfsidl nfsio 65067 75976 0 0 3 0x14280 nfsidl nfsio 19878 292457 0 0 3 0x14280 nfsidl nfsio 42298 418118 0 0 3 0x14280 nfsidl nfsio 44904 157570 0 0 3 0x14280 nfsidl nfsio 92950 145936 0 0 3 0x14280 nfsidl nfsio 19558 21058 0 0 3 0x14280 nfsidl nfsio 71858 125451 0 0 3 0x14280 nfsidl nfsio 4921 192623 0 0 3 0x14280 nfsidl nfsio 43854 120429 0 0 3 0x14280 nfsidl nfsio 69577 128158 0 0 3 0x14280 nfsidl nfsio 38609 514745 85863 0 3 0x82 nanoslp syz-executor 84686 288703 1 0 3 0x100083 ttyin getty 42037 483796 0 0 3 0x14200 bored sosplice 85985 236554 85863 0 3 0x82 wait syz-executor 38814 464982 85863 0 3 0x82 wait syz-executor 76074 145696 85863 0 3 0x82 nanoslp syz-executor 4527 262849 85863 0 3 0x82 nanoslp syz-executor 2603 192431 85863 0 3 0x2 biowait syz-executor 48106 383310 85863 0 3 0x82 nanoslp syz-executor 85863 314940 29682 0 3 0x82 kqread syz-executor 29682 309489 62305 0 3 0x10008a sigsusp ksh 62305 189881 78427 0 3 0x98 kqread sshd-session 78427 243315 90882 0 3 0x92 kqread sshd-session 90882 120801 1 0 3 0x88 kqread sshd 58676 198583 97255 74 3 0x1100092 bpf pflogd 97255 116720 1 0 3 0x80 sbwait pflogd 24752 52632 99900 73 3 0x1100090 kqread syslogd 99900 26157 1 0 3 0x100082 sbwait syslogd 4159 468070 1 0 3 0x100080 kqread resolvd 48524 50179 82254 77 3 0x100092 kqread dhcpleased 21455 228065 82254 77 3 0x100092 kqread dhcpleased 82254 104408 1 0 3 0x80 kqread dhcpleased 42104 135642 0 0 3 0x14200 bored smr 59633 511733 0 0 3 0x14200 pgzero zerothread 27359 306376 0 0 3 0x14200 aiodoned aiodoned 92152 60183 0 0 3 0x14200 syncer update 59152 129281 0 0 3 0x14200 cleaner cleaner 18951 341252 0 0 3 0x14200 reaper reaper 79841 288295 0 0 3 0x14200 pgdaemon pagedaemon 49251 445311 0 0 3 0x14200 bored viomb 64143 82088 0 0 3 0x40014200 acpi0 acpi0 77311 231430 0 0 3 0x40014200 idle1 33309 267301 0 0 3 0x14200 bored softnet3 24202 512905 0 0 3 0x14200 bored softnet2 58889 129955 0 0 3 0x14200 bored softnet1 35366 426921 0 0 3 0x14200 bored softnet0 34704 513364 0 0 3 0x14200 bored systqmp 54495 155493 0 0 3 0x14200 bored systq 84401 306361 0 0 3 0x14200 tmoslp softclockmp 58984 358091 0 0 3 0x40014200 tmoslp softclock 29845 139773 0 0 3 0x40014200 idle0 1 96442 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 97229 (syz-executor) thread 0xffff8000317f2028 (390801) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff838df080) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1160 #1 vn_closefile+0x41 sys/kern/vfs_vnops.c:608 #2 fdrop+0x126 sys/kern/kern_descrip.c:1267 #3 closef+0x192 sys/kern/kern_descrip.c:1251 #4 syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] #4 syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 #5 Xsyscall+0x128 Process 968 (syz-executor) thread 0xffff80002a299498 (508172) exclusive rrwlock inode r = 0 (0xfffffd806e148650) #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+0x367 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:606 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd 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:1201 #8 ufs_lookup+0x19f8 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x8fa sys/kern/vfs_lookup.c:566 #11 namei+0x7aa sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1864 #13 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb08 sys/arch/amd64/amd64/trap.c:579 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806e0621c0) #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+0x367 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:606 #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 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1864 #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 2603 (syz-executor) thread 0xffff80002a299728 (192431) exclusive rrwlock inode r = 0 (0xfffffd806d80d9c8) #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+0x367 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:606 #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 (0xfffffd806cb7f678) #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+0x367 sys/kern/kern_rwlock.c:311 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:606 #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 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10216 11086K 11409K 166960K 12455 0 pcb 17 15K 17K 166960K 248 0 rtable 231 10K 11K 166960K 560 0 pf 38 18K 18K 166960K 95 0 ifaddr 40 7K 7K 166960K 80 0 ifgroup 63 2K 2K 166960K 123 0 sysctl 4 1K 9K 166960K 46 0 counters 72 37K 37K 166960K 148 0 ioctlops 0 0K 4K 166960K 1703 0 iov 0 0K 16K 166960K 46 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1426 90K 90K 166960K 2191 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 17 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 27 0 dirhash 12 2K 3K 166960K 30 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 106K 166960K 912 0 sigio 0 0K 0K 166960K 27 0 proc 73 91K 140K 166960K 666 0 subproc 72 4K 4K 166960K 90 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 151 0 in_multi 79 5K 7K 166960K 138 0 ether_multi 1 0K 0K 166960K 6 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 91 413K 413K 166960K 91 0 exec 0 0K 1K 166960K 605 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 249 168K 177K 166960K 10017 0 UVM aobj 22 4K 4K 166960K 23 0 pinsyscall 41 82K 104K 166960K 2069 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 43 0 NDP 13 0K 2K 166960K 54 0 temp 75 8684K 8812K 166960K 24804 0 kqueue 15 24K 30K 166960K 167 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 120 118 0 115 2 0 2 2 0 8 1 rtentry 176 151 0 53 6 0 6 6 0 8 0 unpcb 144 464 0 446 3 1 2 2 0 8 1 syncache 336 9 0 9 3 2 1 1 0 8 1 tcpqe 32 4 0 4 3 2 1 1 0 8 1 tcpcb 808 314 0 306 15 7 8 8 0 8 7 arp 128 25 0 10 1 0 1 1 0 8 0 inpcb 384 1074 0 1061 28 18 10 16 0 8 8 nd6 144 33 0 12 1 0 1 1 0 8 0 pkpcb 40 7 0 7 3 2 1 1 0 8 1 kcovpl 48 10 0 2 1 0 1 1 0 8 0 mppekey 1024 1 0 1 1 1 0 1 0 8 0 ppxss 1192 32 0 31 1 0 1 1 0 8 0 pppxif 1504 2 0 1 2 1 1 1 0 8 0 pffrag 232 11 0 4 1 0 1 1 0 482 0 pffrnode 88 7 0 1 1 0 1 1 0 8 0 pffrent 40 19 0 12 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 61 0 21 1 0 1 1 0 8 0 pfstkey 128 61 0 21 2 0 2 2 0 8 0 pfstate 384 61 0 21 5 0 5 5 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 602 0 187 31 2 29 30 0 8 2 art_table 32 605 0 187 4 0 4 4 0 8 0 art_node 16 150 0 64 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 1 1 1 0 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 24 0 14 1 0 1 1 0 8 0 shmpl 112 20 0 1 1 0 1 1 0 8 0 dirhash 1024 29 0 12 3 0 3 3 0 8 0 dino2pl 256 3064 0 1554 95 0 95 95 0 8 0 ffsino 288 3064 0 1554 109 0 109 109 0 8 0 nchpl 144 4309 0 2608 64 0 64 64 0 8 0 rtmask 32 5 0 5 2 2 0 1 0 8 0 uvmvnodes 80 3667 0 0 75 0 75 75 0 8 0 vnodes 216 3667 0 0 204 0 204 204 0 8 0 namei 1024 14333 0 14332 3 2 1 2 0 8 0 percpumem 16 89 0 38 1 0 1 1 0 8 0 kstatmem 264 72 0 42 3 0 3 3 0 8 0 scsiplug 72 2 0 2 2 1 1 1 0 8 1 scxspl 216 13123 0 13122 10 9 1 8 1 8 0 plimitpl 152 207 0 189 1 0 1 1 0 8 0 sigapl 424 1228 0 1158 10 1 9 9 0 8 0 knotepl 120 579 0 0 18 0 18 18 0 8 0 kqueuepl 224 370 0 358 6 3 3 5 0 8 2 pipepl 336 179 0 152 3 0 3 3 0 8 0 fdescpl 520 1188 0 1158 3 0 3 3 0 8 0 filepl 160 7032 0 6801 32 13 19 19 0 8 8 lockfpl 104 214 0 211 1 0 1 1 0 8 0 lockfspl 48 93 0 90 1 0 1 1 0 8 0 sessionpl 144 31 0 22 1 0 1 1 0 8 0 pgrppl 48 43 0 26 1 0 1 1 0 8 0 ucredpl 104 907 0 892 1 0 1 1 0 8 0 zombiepl 144 1160 0 1158 2 1 1 1 0 8 0 processpl 1208 1228 0 1158 6 0 6 6 0 8 0 procpl 656 2496 0 2416 8 0 8 8 0 8 0 srpgc 96 7 0 7 2 1 1 1 0 8 1 sosppl 168 7 0 7 2 1 1 1 0 8 1 sockpl 728 1678 0 1644 29 17 12 17 0 8 8 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 3 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 128 0 0 16 0 16 16 0 8 0 mcl2k 2048 30 0 0 4 0 4 4 0 8 0 mtagpl 96 55 0 0 2 0 2 2 0 8 0 mbufpl 256 1396 0 0 87 0 87 87 0 8 0 bufpl 280 3543 0 130 244 0 244 244 0 8 0 anonpl 32 6599 0 0 54 0 54 54 0 246 0 amapchunkpl 152 32014 0 31467 33 4 29 29 0 158 4 amappl16 200 2557 0 2515 6 3 3 5 0 8 0 amappl15 192 5 0 5 3 3 0 1 0 8 0 amappl14 184 128 0 116 1 0 1 1 0 8 0 amappl13 176 34 0 33 1 0 1 1 0 8 0 amappl12 168 1865 0 1835 3 1 2 2 0 8 0 amappl11 160 54 0 40 1 0 1 1 0 8 0 amappl10 152 5 0 5 1 1 0 1 0 8 0 amappl9 144 245 0 244 1 0 1 1 0 8 0 amappl8 136 23 0 20 1 0 1 1 0 8 0 amappl7 128 141 0 129 1 0 1 1 0 8 0 amappl6 120 205 0 201 1 0 1 1 0 8 0 amappl5 112 135 0 126 1 0 1 1 0 8 0 amappl4 104 356 0 336 1 0 1 1 0 8 0 amappl3 96 6356 0 6245 4 0 4 4 0 8 0 amappl2 88 700 0 637 2 0 2 2 0 8 0 amappl1 80 12766 0 12171 16 1 15 15 0 8 1 amappl 88 9134 0 8959 5 0 5 5 0 92 0 dma65536 65536 1 0 1 1 1 0 1 0 8 0 dma16384 16384 1 0 1 1 1 0 1 0 8 0 dma4096 4096 2 0 2 2 2 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 2 2 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 22 0 1 1 0 1 1 0 8 0 uaddrrnd 24 1188 0 1158 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1188 0 1158 1 0 1 1 0 8 0 vmmpekpl 168 10842 0 10792 3 0 3 3 0 8 0 vmmpepl 168 80655 0 78695 105 9 96 97 0 357 1 vmsppl 480 1187 0 1158 5 0 5 5 0 8 0 rwobjpl 72 26005 0 21363 87 0 87 87 0 8 0 pdppl 4096 2383 0 2316 105 32 73 83 0 8 6 pvpl 32 14201 0 0 116 1 115 115 0 265 0 pmappl 256 1187 0 1158 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 490 0 51 13 0 13 13 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8382fff0) 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(ffffffff838dee78) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:128 [inline] __mp_lock(ffffffff838dee78) at __mp_lock+0x192 sys/kern/kern_lock.c:159 intr_handler(ffff80003c510110,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff838dee78) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:128 [inline] __mp_lock(ffffffff838dee78) at __mp_lock+0x192 sys/kern/kern_lock.c:159 softintr_dispatch(0) at softintr_dispatch+0x12a sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:840 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff838dee78) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:128 [inline] __mp_lock(ffffffff838dee78) at __mp_lock+0x192 sys/kern/kern_lock.c:159 syscall(ffff80003c510470) at syscall+0xae6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c510470) at syscall+0xae6 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x12014d15470, count: 2 ddb{0}> trace x86_ipi_db(ffffffff8382fff0) 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(ffffffff838dee78) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:128 [inline] __mp_lock(ffffffff838dee78) at __mp_lock+0x192 sys/kern/kern_lock.c:159 intr_handler(ffff80003c510110,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_lock(ffffffff838dee78) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:128 [inline] __mp_lock(ffffffff838dee78) at __mp_lock+0x192 sys/kern/kern_lock.c:159 softintr_dispatch(0) at softintr_dispatch+0x12a sys/kern/kern_softintr.c:83 dosoftint(0) at dosoftint+0x54 sys/arch/amd64/amd64/intr.c:840 Xsoftclock() at Xsoftclock+0x27 __mp_lock(ffffffff838dee78) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:128 [inline] __mp_lock(ffffffff838dee78) at __mp_lock+0x192 sys/kern/kern_lock.c:159 syscall(ffff80003c510470) at syscall+0xae6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c510470) at syscall+0xae6 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x12014d15470, count: -13 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(ffffffff834653c8) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff83411804,ffffffff83414777,3e3,ffffffff834147bf) at __assert+0x29 sys/kern/subr_prf.c:-1 refcnt_finalize(ffff80002f3db4f0,ffffffff8335a6a1) at refcnt_finalize+0x1c8 sys/kern/kern_synch.c:996 pppx_if_destroy(ffff8000327f5000,ffff80002f3db4e8) at pppx_if_destroy+0x3d sys/net/if_pppx.c:806 pppxclose(205b9a,1,2000,ffff8000317f2028) at pppxclose+0xa0 sys/net/if_pppx.c:553 spec_close(ffff80002a321d30) at spec_close+0x412 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805e1368b0,1,fffffd80097fb548,ffff8000317f2028) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806ac02e08,ffff8000317f2028) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806ac02e08,ffff8000317f2028) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806ac02e08,ffff8000317f2028) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806ac02e08,ffff8000317f2028) at closef+0x192 sys/kern/kern_descrip.c:1251 syscall(ffff80002a321f90) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a321f90) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5d65a393de0, count: 2 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff834653c8) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff83411804,ffffffff83414777,3e3,ffffffff834147bf) at __assert+0x29 sys/kern/subr_prf.c:-1 refcnt_finalize(ffff80002f3db4f0,ffffffff8335a6a1) at refcnt_finalize+0x1c8 sys/kern/kern_synch.c:996 pppx_if_destroy(ffff8000327f5000,ffff80002f3db4e8) at pppx_if_destroy+0x3d sys/net/if_pppx.c:806 pppxclose(205b9a,1,2000,ffff8000317f2028) at pppxclose+0xa0 sys/net/if_pppx.c:553 spec_close(ffff80002a321d30) at spec_close+0x412 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805e1368b0,1,fffffd80097fb548,ffff8000317f2028) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806ac02e08,ffff8000317f2028) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806ac02e08,ffff8000317f2028) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806ac02e08,ffff8000317f2028) at fdrop+0x126 sys/kern/kern_descrip.c:1267 closef(fffffd806ac02e08,ffff8000317f2028) at closef+0x192 sys/kern/kern_descrip.c:1251 syscall(ffff80002a321f90) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a321f90) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:579 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x5d65a393de0, count: -13