panic: kernel diagnostic assertion "refs != ~0" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_synch.c", line 944 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 256160 18380 0 0 0 0 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8343fe55) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833ea525,ffffffff833eea67,3b0,ffffffff833eeaaf) at __assert+0x29 refcnt_finalize(ffff80003c4eb3d0,ffffffff8332f76d) at refcnt_finalize+0x1c8 sys/kern/kern_synch.c:945 pppx_if_destroy(205b9a,ffff80003c4eb3c8) at pppx_if_destroy+0x3d sys/net/if_pppx.c:806 pppxclose(205b9a,1,2000,ffff80003c4e14a8) at pppxclose+0xa0 sys/net/if_pppx.c:553 spec_close(ffff80003b0cbf30) at spec_close+0x412 VOP_CLOSE(fffffd806bb70620,1,fffffd807f7d2340,ffff80003c4e14a8) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806be5a130,ffff80003c4e14a8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806be5a130,ffff80003c4e14a8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806be5a130,ffff80003c4e14a8) at fdrop+0x126 sys/kern/kern_descrip.c:1265 closef(fffffd806be5a130,ffff80003c4e14a8) at closef+0x192 sys/kern/kern_descrip.c:1249 fdfree(ffff80003c4e14a8) at fdfree+0x116 sys/kern/kern_descrip.c:1181 exit1(ffff80003c4e14a8,0,0,1) at exit1+0x58f sys/kern/kern_exit.c:216 sys_exit(ffff80003c4e14a8,ffff80003b0cc2a0,ffff80003b0cc1f0) at sys_exit+0x1a end trace frame: 0xffff80003b0cc290, 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: kernel diagnostic assertion "refs != ~0" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_synch.c", line 944 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8343fe55) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833ea525,ffffffff833eea67,3b0,ffffffff833eeaaf) at __assert+0x29 refcnt_finalize(ffff80003c4eb3d0,ffffffff8332f76d) at refcnt_finalize+0x1c8 sys/kern/kern_synch.c:945 pppx_if_destroy(205b9a,ffff80003c4eb3c8) at pppx_if_destroy+0x3d sys/net/if_pppx.c:806 pppxclose(205b9a,1,2000,ffff80003c4e14a8) at pppxclose+0xa0 sys/net/if_pppx.c:553 spec_close(ffff80003b0cbf30) at spec_close+0x412 VOP_CLOSE(fffffd806bb70620,1,fffffd807f7d2340,ffff80003c4e14a8) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806be5a130,ffff80003c4e14a8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806be5a130,ffff80003c4e14a8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806be5a130,ffff80003c4e14a8) at fdrop+0x126 sys/kern/kern_descrip.c:1265 closef(fffffd806be5a130,ffff80003c4e14a8) at closef+0x192 sys/kern/kern_descrip.c:1249 fdfree(ffff80003c4e14a8) at fdfree+0x116 sys/kern/kern_descrip.c:1181 exit1(ffff80003c4e14a8,0,0,1) at exit1+0x58f sys/kern/kern_exit.c:216 sys_exit(ffff80003c4e14a8,ffff80003b0cc2a0,ffff80003b0cc1f0) at sys_exit+0x1a syscall(ffff80003b0cc2a0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003b0cc2a0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a01c9362180, count: -16 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80003b0cbd00 rbx 0xffff800029aacdc7 rdx 0 rcx 0xffff80003c4e14a8 rax 0xffff800029aabff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xd8c7273abbb21d61 r11 0x66d5d41f2db0b707 r12 0xffff800029aacbc8 r13 0 r14 0 r15 0x1 rip 0xffffffff8136a795 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003b0cbcf0 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=273461 pid=64157 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c4e14a8 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c4e02b8,0xffff80002a38af90 process=0xffff8000ffff2e18 user=0xffff80003b0c7000, vmspace=0xfffffd806bbc2740 estcpu=36, cpticks=6, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 18380 256160 67840 0 7 0 syz-executor 18380 397719 67840 0 3 0x4000080 fsleep syz-executor 16576 40553 99095 0 2 0 syz-executor 16576 302602 99095 0 3 0x4000000 biowait syz-executor 33067 477395 93416 0 2 0 syz-executor 33067 351559 93416 0 3 0x4000000 smrbar syz-executor 44901 50195 83487 0 3 0x82 nanoslp syz-executor 8710 201829 0 0 3 0x14200 bored sosplice 61113 455906 0 0 3 0x14200 acct acct 99095 26441 83487 0 3 0x82 nanoslp syz-executor 53698 338397 83487 0 3 0x82 nanoslp syz-executor 67840 431781 83487 0 3 0x82 nanoslp syz-executor 59499 384208 83487 0 3 0x2 biowait syz-executor 55107 145150 83487 0 3 0x82 nanoslp syz-executor 83813 374431 83487 0 3 0x2 biowait syz-executor 93416 20208 83487 0 3 0x82 nanoslp syz-executor 83487 138001 78170 0 3 0x82 kqread syz-executor 78170 429583 41698 0 3 0x10008a sigsusp ksh 41698 263689 81957 0 3 0x98 kqread sshd-session 81957 209865 10607 0 3 0x92 kqread sshd-session 21706 51123 1 0 3 0x100083 ttyopn getty 10607 19787 1 0 3 0x88 kqread sshd 24090 314875 24235 74 3 0x1100092 bpf pflogd 24235 218945 1 0 3 0x80 sbwait pflogd 30065 451213 66751 73 3 0x1100090 kqread syslogd 66751 164946 1 0 3 0x100082 sbwait syslogd 12811 310529 1 0 3 0x100080 kqread resolvd 68575 307624 8972 77 3 0x100092 kqread dhcpleased 534 382783 8972 77 3 0x100092 kqread dhcpleased 8972 389341 1 0 3 0x80 kqread dhcpleased 59600 449545 0 0 3 0x14200 bored smr 31275 270382 0 0 2 0x14200 zerothread 28272 180821 0 0 3 0x14200 aiodoned aiodoned 24142 94301 0 0 3 0x14200 syncer update 32063 354669 0 0 3 0x14200 cleaner cleaner 17121 135675 0 0 3 0x14200 reaper reaper 57807 146337 0 0 3 0x14200 pgdaemon pagedaemon 98717 22970 0 0 3 0x14200 bored viomb 77355 399512 0 0 3 0x40014200 acpi0 acpi0 91469 5645 0 0 3 0x40014200 idle1 84675 139958 0 0 3 0x14200 bored softnet3 34995 311245 0 0 3 0x14200 bored softnet2 14667 144582 0 0 3 0x14200 bored softnet1 95070 347098 0 0 3 0x14200 bored softnet0 43178 401694 0 0 3 0x14200 bored systqmp 56856 243626 0 0 3 0x14200 bored systq 96361 220315 0 0 3 0x14200 tmoslp softclockmp 45915 256667 0 0 3 0x40014200 tmoslp softclock 85396 436775 0 0 3 0x40014200 idle0 1 453934 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 16576 (syz-executor) thread 0xffff80003c4e0cf8 (302602) exclusive rrwlock inode r = 0 (0xfffffd806e619870) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd sys/kern/vfs_subr.c:694 #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_relookup+0xd4 sys/kern/vfs_lookup.c:787 #11 ufs_rename+0x15e4 sys/ufs/ufs/ufs_vnops.c:1007 #12 VOP_RENAME+0x13c sys/kern/vfs_vops.c:376 #13 dorenameat+0x3f8 sys/kern/vfs_syscalls.c:3038 #14 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #14 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #15 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806ac3aa78) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vfs_relookup+0x5c sys/kern/vfs_lookup.c:778 #6 ufs_rename+0x15e4 sys/ufs/ufs/ufs_vnops.c:1007 #7 VOP_RENAME+0x13c sys/kern/vfs_vops.c:376 #8 dorenameat+0x3f8 sys/kern/vfs_syscalls.c:3038 #9 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #9 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #10 Xsyscall+0x128 Process 59499 (syz-executor) thread 0xffff80002a387728 (384208) exclusive rrwlock inode r = 0 (0xfffffd8077ab0ba0) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2bd sys/kern/vfs_subr.c:694 #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:1866 #13 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806c297538) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #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:1866 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 83813 (syz-executor) thread 0xffff80002a3867c8 (374431) exclusive rrwlock inode r = 0 (0xfffffd806e36f0b8) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #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:3117 #10 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8077df0760) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_do_enter_write+0x3ea sys/kern/kern_rwlock.c:316 #2 rrw_enter+0xc6 sys/kern/kern_rwlock.c:616 #3 VOP_LOCK+0xa6 sys/kern/vfs_vops.c:524 #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:3102 #8 syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10219 11155K 11288K 166960K 11695 0 pcb 18 15K 17K 166960K 113 0 rtable 233 8K 8K 166960K 657 0 pf 37 18K 18K 166960K 64 0 ifaddr 42 7K 7K 166960K 60 0 ifgroup 58 2K 2K 166960K 82 0 sysctl 1 1K 1K 166960K 1 0 counters 70 36K 37K 166960K 90 0 ioctlops 0 0K 4K 166960K 1519 0 iov 0 0K 20K 166960K 28 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1345 85K 85K 166960K 1643 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 8 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 31 0 dirhash 15 2K 2K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 89K 166960K 521 0 sigio 0 0K 0K 166960K 10 0 proc 72 91K 140K 166960K 628 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 70 0 in_multi 89 6K 7K 166960K 120 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 121 546K 546K 166960K 121 0 exec 0 0K 1K 166960K 420 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 219 72K 86K 166960K 6332 0 UVM aobj 8 2K 2K 166960K 10 0 pinsyscall 41 82K 102K 166960K 1635 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 18 0 NDP 13 0K 2K 166960K 39 0 temp 50 8637K 8701K 166960K 16085 0 kqueue 14 22K 30K 166960K 80 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 66 0 63 1 0 1 1 0 8 0 rtentry 112 197 0 92 4 0 4 4 0 8 0 unpcb 144 253 0 235 2 0 2 2 0 8 1 syncache 336 5 0 5 1 1 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 808 159 0 154 7 6 1 7 0 8 0 arp 120 21 0 5 1 0 1 1 0 8 0 inpcb 376 569 0 559 17 6 11 11 0 8 9 nd6 136 29 0 6 1 0 1 1 0 8 0 pkpcb 40 2 0 2 2 1 1 1 0 8 1 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1168 10 0 7 2 1 1 1 0 8 0 pppxif 1472 2 0 1 2 1 1 1 0 8 0 pffrag 232 2 0 0 1 0 1 1 0 482 0 pffrnode 88 2 0 0 1 0 1 1 0 8 0 pffrent 40 2 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 42 0 0 1 0 1 1 0 8 0 pfstkey 128 42 0 0 2 0 2 2 0 8 0 pfstate 376 42 0 0 5 0 5 5 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 3 0 0 3 0 3 3 0 8 0 art_heap4 256 524 0 96 29 2 27 29 0 8 0 art_table 32 527 0 96 4 0 4 4 0 8 0 art_node 16 131 0 36 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 8 2 1 1 1 0 8 1 semapl 112 29 0 19 1 0 1 1 0 8 0 shmpl 112 7 0 2 1 0 1 1 0 8 0 dirhash 1024 23 0 4 3 0 3 3 0 8 0 dino2pl 256 2286 0 773 95 0 95 95 0 8 0 ffsino 280 2286 0 773 109 0 109 109 0 8 0 nchpl 144 3023 0 1325 65 1 64 64 0 8 0 rtmask 32 1 0 0 1 0 1 1 0 8 0 uvmvnodes 80 2513 0 0 52 0 52 52 0 8 0 vnodes 216 2513 0 0 140 0 140 140 0 8 0 namei 1024 9980 0 9977 2 1 1 1 0 8 0 percpumem 16 59 0 10 1 0 1 1 0 8 0 kstatmem 264 40 0 14 2 0 2 2 0 8 0 acpiwqpl 32 2 0 2 1 0 1 1 1 8 1 scxspl 216 9127 0 9124 5 2 3 3 1 8 2 plimitpl 152 96 0 78 1 0 1 1 0 8 0 sigapl 424 821 0 771 7 1 6 7 0 8 0 futexpl 64 6105 0 6104 1 0 1 1 0 8 0 knotepl 120 310 0 0 10 0 10 10 0 8 0 kqueuepl 216 214 0 203 5 4 1 5 0 8 0 pipepl 328 181 0 154 6 0 6 6 0 8 3 fdescpl 504 801 0 771 5 0 5 5 0 8 0 filepl 152 4282 0 4054 16 3 13 13 0 8 2 lockfpl 104 207 0 205 2 1 1 2 0 8 0 lockfspl 48 54 0 52 1 0 1 1 0 8 0 sessionpl 144 25 0 16 1 0 1 1 0 8 0 pgrppl 48 39 0 22 1 0 1 1 0 8 0 ucredpl 104 533 0 519 1 0 1 1 0 8 0 zombiepl 144 774 0 771 1 0 1 1 0 8 0 processpl 1176 821 0 771 6 1 5 5 0 8 0 procpl 656 1440 0 1387 6 0 6 6 0 8 0 srpgc 96 4 0 4 1 1 0 1 0 8 0 sosppl 168 1 0 1 1 1 0 1 0 8 0 sockpl 688 899 0 868 17 5 12 12 0 8 8 mcl64k 65536 2 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 mcl8k 8192 4 0 0 1 0 1 1 0 8 0 mcl4k 4096 116 0 0 15 0 15 15 0 8 0 mcl2k 2048 20 0 0 3 0 3 3 0 8 0 mtagpl 96 13 0 0 1 0 1 1 0 8 0 mbufpl 256 172 0 0 11 0 11 11 0 8 0 bufpl 280 3001 0 133 205 0 205 205 0 8 0 anonpl 24 127880 0 124300 38 4 34 34 0 184 11 amapchunkpl 152 20005 0 19525 29 4 25 27 0 158 4 amappl16 200 2166 0 2131 7 4 3 5 0 8 0 amappl15 192 8 0 8 1 1 0 1 0 8 0 amappl14 184 113 0 101 1 0 1 1 0 8 0 amappl13 176 28 0 28 1 1 0 1 0 8 0 amappl12 168 1459 0 1429 3 1 2 3 0 8 0 amappl11 160 48 0 34 1 0 1 1 0 8 0 amappl10 152 4 0 4 1 1 0 1 0 8 0 amappl9 144 250 0 250 1 1 0 1 0 8 0 amappl8 136 25 0 22 1 0 1 1 0 8 0 amappl7 128 164 0 152 1 0 1 1 0 8 0 amappl6 120 205 0 202 1 0 1 1 0 8 0 amappl5 112 127 0 117 1 0 1 1 0 8 0 amappl4 104 325 0 304 1 0 1 1 0 8 0 amappl3 96 3769 0 3661 4 0 4 4 0 8 0 amappl2 88 683 0 621 2 0 2 2 0 8 0 amappl1 80 9409 0 8842 14 0 14 14 0 8 0 amappl 88 5926 0 5763 5 0 5 5 0 92 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 9 0 2 1 0 1 1 0 8 0 uaddrrnd 24 801 0 771 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 801 0 771 1 0 1 1 0 8 0 vmmpekpl 168 8228 0 8186 3 0 3 3 0 8 0 vmmpepl 168 54774 0 52944 89 3 86 89 0 357 1 vmsppl 456 800 0 771 5 0 5 5 0 8 1 rwobjpl 64 19625 0 16177 56 0 56 56 0 8 0 pdppl 4096 1610 0 1542 104 32 72 84 0 8 4 pvpl 32 12443 0 0 102 1 101 101 0 265 0 pmappl 248 800 0 771 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 286 0 45 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837e4ff0) 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(ffffffff8398f500) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8398f500) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff80003c4faff0,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f pmap_write_protect(fffffd806bbc18c8,1d90e02000,1d91201000,3) at pmap_write_protect+0x411 sys/arch/amd64/amd64/pmap.c:2211 uvm_map_protect(fffffd806bbc2908,1d90e01000,1d91201000,3,0,0,9fc1bd7ebe488093) at uvm_map_protect+0xbcd pmap_protect machine/pmap.h:482 [inline] uvm_map_protect(fffffd806bbc2908,1d90e01000,1d91201000,3,0,0,9fc1bd7ebe488093) at uvm_map_protect+0xbcd sys/uvm/uvm_map.c:3184 sys_mprotect(ffff80002a38aa60,ffff80003c4fb350,ffff80003c4fb2a0) at sys_mprotect+0x34c sys/uvm/uvm_mmap.c:590 syscall(ffff80003c4fb350) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4fb350) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e55b9b28110, count: 4 ddb{0}> trace x86_ipi_db(ffffffff837e4ff0) 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(ffffffff8398f500) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff8398f500) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff80003c4faff0,ffff800000079f00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f pmap_write_protect(fffffd806bbc18c8,1d90e02000,1d91201000,3) at pmap_write_protect+0x411 sys/arch/amd64/amd64/pmap.c:2211 uvm_map_protect(fffffd806bbc2908,1d90e01000,1d91201000,3,0,0,9fc1bd7ebe488093) at uvm_map_protect+0xbcd pmap_protect machine/pmap.h:482 [inline] uvm_map_protect(fffffd806bbc2908,1d90e01000,1d91201000,3,0,0,9fc1bd7ebe488093) at uvm_map_protect+0xbcd sys/uvm/uvm_map.c:3184 sys_mprotect(ffff80002a38aa60,ffff80003c4fb350,ffff80003c4fb2a0) at sys_mprotect+0x34c sys/uvm/uvm_mmap.c:590 syscall(ffff80003c4fb350) at syscall+0xbc6 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c4fb350) at syscall+0xbc6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7e55b9b28110, 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(ffffffff8343fe55) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833ea525,ffffffff833eea67,3b0,ffffffff833eeaaf) at __assert+0x29 refcnt_finalize(ffff80003c4eb3d0,ffffffff8332f76d) at refcnt_finalize+0x1c8 sys/kern/kern_synch.c:945 pppx_if_destroy(205b9a,ffff80003c4eb3c8) at pppx_if_destroy+0x3d sys/net/if_pppx.c:806 pppxclose(205b9a,1,2000,ffff80003c4e14a8) at pppxclose+0xa0 sys/net/if_pppx.c:553 spec_close(ffff80003b0cbf30) at spec_close+0x412 VOP_CLOSE(fffffd806bb70620,1,fffffd807f7d2340,ffff80003c4e14a8) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806be5a130,ffff80003c4e14a8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806be5a130,ffff80003c4e14a8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806be5a130,ffff80003c4e14a8) at fdrop+0x126 sys/kern/kern_descrip.c:1265 closef(fffffd806be5a130,ffff80003c4e14a8) at closef+0x192 sys/kern/kern_descrip.c:1249 fdfree(ffff80003c4e14a8) at fdfree+0x116 sys/kern/kern_descrip.c:1181 exit1(ffff80003c4e14a8,0,0,1) at exit1+0x58f sys/kern/kern_exit.c:216 sys_exit(ffff80003c4e14a8,ffff80003b0cc2a0,ffff80003b0cc1f0) at sys_exit+0x1a end trace frame: 0xffff80003b0cc290, count: 0 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff8343fe55) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833ea525,ffffffff833eea67,3b0,ffffffff833eeaaf) at __assert+0x29 refcnt_finalize(ffff80003c4eb3d0,ffffffff8332f76d) at refcnt_finalize+0x1c8 sys/kern/kern_synch.c:945 pppx_if_destroy(205b9a,ffff80003c4eb3c8) at pppx_if_destroy+0x3d sys/net/if_pppx.c:806 pppxclose(205b9a,1,2000,ffff80003c4e14a8) at pppxclose+0xa0 sys/net/if_pppx.c:553 spec_close(ffff80003b0cbf30) at spec_close+0x412 VOP_CLOSE(fffffd806bb70620,1,fffffd807f7d2340,ffff80003c4e14a8) at VOP_CLOSE+0x133 sys/kern/vfs_vops.c:156 vn_closefile(fffffd806be5a130,ffff80003c4e14a8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd806be5a130,ffff80003c4e14a8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd806be5a130,ffff80003c4e14a8) at fdrop+0x126 sys/kern/kern_descrip.c:1265 closef(fffffd806be5a130,ffff80003c4e14a8) at closef+0x192 sys/kern/kern_descrip.c:1249 fdfree(ffff80003c4e14a8) at fdfree+0x116 sys/kern/kern_descrip.c:1181 exit1(ffff80003c4e14a8,0,0,1) at exit1+0x58f sys/kern/kern_exit.c:216 sys_exit(ffff80003c4e14a8,ffff80003b0cc2a0,ffff80003b0cc1f0) at sys_exit+0x1a syscall(ffff80003b0cc2a0) at syscall+0xb08 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003b0cc2a0) at syscall+0xb08 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7a01c9362180, count: -16