panic: kernel diagnostic assertion "refs != ~0" failed: file "/syzkaller/managers/multicore/kernel/sys/kern/kern_synch.c", line 953 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 523253 33611 0 0x100000 0 0 sh db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833728a0) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833b0072,ffffffff833bc121,3b9,ffffffff833e5e53) at __assert+0x29 sys/kern/subr_prf.c:-1 refcnt_finalize(ffff80002a386950,ffffffff833692c3) at refcnt_finalize+0x1db sys/kern/kern_synch.c:954 pppx_if_destroy(205b9a,ffff80002a386948) at pppx_if_destroy+0x3d sys/net/if_pppx.c:794 pppxclose(205b9a,2,2000,ffff80003c458fb8) at pppxclose+0xa0 sys/net/if_pppx.c:541 spec_close(ffff80003c47b5e0) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805d8c82a0,2,fffffd80097fb138,ffff80003c458fb8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805fe31ed0,ffff80003c458fb8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805fe31ed0,ffff80003c458fb8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805fe31ed0,ffff80003c458fb8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805fe31ed0,ffff80003c458fb8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c458fb8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c458fb8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c458fb8,ffff80003c47b950,ffff80003c47b8a0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 end trace frame: 0xffff80003c47b940, 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 953 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833728a0) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833b0072,ffffffff833bc121,3b9,ffffffff833e5e53) at __assert+0x29 sys/kern/subr_prf.c:-1 refcnt_finalize(ffff80002a386950,ffffffff833692c3) at refcnt_finalize+0x1db sys/kern/kern_synch.c:954 pppx_if_destroy(205b9a,ffff80002a386948) at pppx_if_destroy+0x3d sys/net/if_pppx.c:794 pppxclose(205b9a,2,2000,ffff80003c458fb8) at pppxclose+0xa0 sys/net/if_pppx.c:541 spec_close(ffff80003c47b5e0) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805d8c82a0,2,fffffd80097fb138,ffff80003c458fb8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805fe31ed0,ffff80003c458fb8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805fe31ed0,ffff80003c458fb8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805fe31ed0,ffff80003c458fb8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805fe31ed0,ffff80003c458fb8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c458fb8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c458fb8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c458fb8,ffff80003c47b950,ffff80003c47b8a0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c47b950) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c47b950) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x74bf7951c910, count: -16 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c47b3b0 rbx 0xffff8000299eeddf rdx 0 rcx 0xffff80003c458fb8 rax 0xffff8000299edff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x4bb43d1bcf040cc7 r11 0xc07e0c526fe9951d r12 0xffff8000299eebe0 r13 0 r14 0 r15 0x1 rip 0xffffffff830fde05 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c47b3a0 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=463443 pid=53248 tcnt=0 stat=onproc flags process=1008 proc=2000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0xffff80003c458fb8 scnt=-1 ecnt=1 forw=0xffffffffffffffff, list=0xffff80003c4594e8,0xffff80003c458038 process=0xffff80002a2a79d0 user=0xffff80003c476000, vmspace=0xfffffd806b9b7d70 estcpu=36, cpticks=3, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 33611 523253 30449 0 7 0x100000 sh 31046 401312 95219 0 2 0 syz-executor 31046 184582 95219 0 3 0x4000080 ttyout syz-executor 31046 515101 95219 0 3 0x4000080 fsleep syz-executor 30449 429752 90871 0 3 0x10008a sigsusp sh 52759 7586 94791 0 2 0 syz-executor 52759 307898 94791 0 3 0x4000080 kqpoll syz-executor 52759 336616 94791 0 2 0x4000000 syz-executor 28735 153399 36156 0 3 0x80 nanoslp syz-executor 28735 85305 36156 0 3 0x4000000 physio syz-executor 2531 31061 65979 0 3 0x80 nanoslp syz-executor 2531 16743 65979 0 3 0x4000000 smrbar syz-executor 2531 326058 65979 0 3 0x4000080 fsleep syz-executor 50699 277333 96770 0 2 0 syz-executor 50699 7638 96770 0 3 0x4000080 fsleep syz-executor 50699 392225 96770 0 3 0x4000080 fsleep syz-executor 50699 223568 96770 0 3 0x4000080 piperd syz-executor 50699 354684 96770 0 3 0x4000080 fsleep syz-executor 90871 114802 76284 0 3 0x82 wait syz-executor 18751 314335 76284 0 3 0x2 biowait syz-executor 94791 64063 76284 0 3 0x82 nanoslp syz-executor 36156 393485 76284 0 3 0x82 nanoslp syz-executor 95219 468496 76284 0 3 0x82 nanoslp syz-executor 65979 463829 76284 0 3 0x82 nanoslp syz-executor 46699 473553 76284 0 3 0x82 nanoslp syz-executor 86565 100221 1 0 3 0x100083 ttyin getty 12318 57297 0 0 3 0x14200 bored sosplice 96770 64177 76284 0 3 0x82 nanoslp syz-executor 76284 313330 30995 0 3 0x82 kqread syz-executor 30995 218733 26080 0 3 0x10008a sigsusp ksh 26080 512822 76800 0 3 0x98 kqread sshd-session 76800 398214 82397 0 3 0x92 kqread sshd-session 82397 145380 1 0 3 0x88 kqread sshd 2903 415303 25218 74 3 0x1100092 bpf pflogd 25218 476359 1 0 3 0x80 sbwait pflogd 78530 436847 26921 73 3 0x1100090 kqread syslogd 26921 242095 1 0 3 0x100082 sbwait syslogd 7686 252853 1 0 3 0x100080 kqread resolvd 98975 66862 74681 77 3 0x100092 kqread dhcpleased 34294 160437 74681 77 3 0x100092 kqread dhcpleased 74681 23446 1 0 3 0x80 kqread dhcpleased 56419 353999 0 0 3 0x14200 bored smr 7760 376676 0 0 2 0x14200 zerothread 96920 172036 0 0 3 0x14200 aiodoned aiodoned 95060 289327 0 0 3 0x14200 syncer update 48770 234340 0 0 3 0x14200 cleaner cleaner 48779 215046 0 0 3 0x14200 reaper reaper 59937 268692 0 0 3 0x14200 pgdaemon pagedaemon 54758 87008 0 0 3 0x14200 bored viomb 99247 496793 0 0 3 0x40014200 acpi0 acpi0 51207 436600 0 0 3 0x40014200 idle1 64546 490799 0 0 3 0x14200 bored softnet7 49912 458704 0 0 3 0x14200 bored softnet6 51550 238683 0 0 3 0x14200 bored softnet5 37941 3141 0 0 3 0x14200 bored softnet4 24138 413270 0 0 3 0x14200 bored softnet3 55173 505209 0 0 3 0x14200 bored softnet2 85061 474482 0 0 3 0x14200 bored softnet1 44849 223185 0 0 3 0x14200 bored softnet0 98821 405983 0 0 3 0x14200 bored systqmp 37153 265291 0 0 3 0x14200 bored systq 45852 399914 0 0 3 0x14200 tmoslp softclockmp 60476 423590 0 0 3 0x40014200 tmoslp softclock 28189 16573 0 0 3 0x40014200 idle0 1 256735 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 33611 (sh) thread 0xffff80003c452d28 (523253) exclusive rwlock uobjlk r = 0 (0xfffffd800b045518) #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_lower_lookup+0x53 sys/uvm/uvm_fault.c:1236 #3 uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1370 #4 uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 #7 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd806b9b76d0) #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 28735 (syz-executor) thread 0xffff800035c09778 (85305) shared rwlock vmmaplk r = 0 (0xfffffd806b3d4128) #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 uvm_vslock_device+0x149 sys/uvm/uvm_glue.c:173 #3 physio+0x257 sys/kern/kern_physio.c:139 #4 spec_read+0x14b sys/kern/spec_vnops.c:215 #5 VOP_READ+0x101 sys/kern/vfs_vops.c:227 #6 vn_read+0x17b sys/kern/vfs_vnops.c:369 #7 dofilereadv+0x25a sys/kern/sys_generic.c:252 #8 sys_pread+0xae sys/kern/vfs_syscalls.c:3307 #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 Process 18751 (syz-executor) thread 0xffff80003c453258 (314335) exclusive rrwlock inode r = 0 (0xfffffd806b9946a8) #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 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:1232 #6 ffs_inode_alloc+0x279 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0xfc sys/ufs/ufs/ufs_vnops.c:1112 #8 VOP_MKDIR+0x101 sys/kern/vfs_vops.c:394 #9 domkdirat+0x179 sys/kern/vfs_syscalls.c:3113 #10 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806ea54238) #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 domkdirat+0x8b sys/kern/vfs_syscalls.c:3098 #8 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #8 syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10254 11120K 11780K 166960K 15657 0 pcb 18 18K 20K 166960K 650 0 rtable 205 12K 12K 166960K 1008 0 pf 44 19K 83K 166960K 336 0 ifaddr 40 7K 7K 166960K 245 0 ifgroup 67 2K 3K 166960K 398 0 sysctl 4 1K 9K 166960K 23 0 counters 74 37K 38K 166960K 514 0 ioctlops 0 0K 4K 166960K 1868 0 iov 0 0K 18K 166960K 107 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1516 95K 96K 166960K 4314 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 46 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 89 0 dirhash 12 2K 2K 166960K 48 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 240K 166960K 2699 0 sigio 0 0K 0K 166960K 64 0 proc 72 115K 180K 166960K 1421 0 subproc 72 4K 4K 166960K 272 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 280 0 in_multi 69 5K 7K 166960K 406 0 ether_multi 1 0K 0K 166960K 17 0 mrt 0 0K 0K 166960K 10 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 235 1049K 1049K 166960K 235 0 exec 0 0K 1K 166960K 863 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 243 161K 174K 166960K 24905 0 UVM aobj 131 7K 7K 166960K 137 0 pinsyscall 43 86K 104K 166960K 4398 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 183 0 NDP 14 0K 2K 166960K 177 0 temp 115 8652K 8780K 166960K 88571 0 kqueue 15 24K 33K 166960K 437 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 120 231 0 228 2 1 1 2 0 8 0 rtentry 176 384 0 313 5 0 5 5 0 8 0 unpcb 144 1526 0 1508 14 13 1 6 0 8 0 syncache 336 13 0 13 6 5 1 1 0 8 1 tcpqe 32 6 0 6 4 4 0 1 0 8 0 tcpcb 736 1126 0 1117 25 23 2 10 0 8 1 arp 128 40 0 28 1 0 1 1 0 8 0 inpcb 328 3185 0 3170 28 23 5 12 0 8 2 nd6 144 75 0 65 1 0 1 1 0 8 0 pkpcb 40 58 0 58 4 3 1 1 0 8 1 kcovpl 48 30 0 22 1 0 1 1 0 8 0 mppekey 1024 2 0 2 2 2 0 1 0 8 0 ppxss 1192 172 0 171 2 1 1 1 0 8 0 pppxif 1504 79 0 78 6 5 1 1 0 8 0 pfstscr 40 6 0 4 1 0 1 1 0 8 0 pffrag 232 15 0 9 2 1 1 1 0 482 0 pffrnode 88 10 0 6 2 1 1 1 0 8 0 pffrent 40 26 0 20 2 1 1 1 0 8 0 pfosfp 40 1435 0 1009 5 0 5 5 0 8 0 pfosfpen 112 1435 0 715 21 0 21 21 0 8 0 pfrktable 1344 1 0 1 1 1 0 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 186 0 129 1 0 1 1 0 8 0 pfstkey 128 195 0 139 3 0 3 3 0 8 0 pfstate 384 191 0 136 10 2 8 9 0 8 0 pfrule 1344 35 0 29 2 1 1 2 0 8 0 art_heap8 4096 6 0 2 6 2 4 5 0 8 0 art_heap4 256 1723 0 1395 33 10 23 28 0 8 2 art_table 40 1729 0 1397 5 0 5 5 0 8 0 art_node 32 347 0 286 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 2 1 0 1 1 0 8 0 semupl 112 3 0 3 2 2 0 1 0 8 0 semapl 112 84 0 74 1 0 1 1 0 8 0 shmpl 112 134 0 6 4 0 4 4 0 8 0 dirhash 1024 43 0 26 3 0 3 3 0 8 0 dino2pl 256 6130 0 4580 98 0 98 98 0 8 0 ffsino 296 6130 0 4580 120 0 120 120 0 8 0 nchpl 144 9414 0 7652 66 0 66 66 0 8 0 rtmask 32 28 0 28 4 3 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 34680 0 34679 1 0 1 1 0 8 0 percpumem 16 272 0 220 1 0 1 1 0 8 0 kstatmem 264 244 0 210 3 0 3 3 0 8 0 acpiwqpl 32 2 0 2 1 0 1 1 1 8 1 scsiplug 72 9 0 9 5 5 0 1 0 8 0 scxspl 216 51566 0 51564 12 11 1 8 1 8 0 plimitpl 152 493 0 474 1 0 1 1 0 8 0 sigapl 424 2969 0 2914 7 0 7 7 0 8 0 knotepl 120 838 0 0 25 0 25 25 0 8 0 kqueuepl 224 1069 0 1056 15 14 1 9 0 8 0 pipepl 344 496 0 466 15 12 3 9 0 8 0 fdescpl 528 2939 0 2907 3 0 3 3 0 8 0 filepl 160 19637 0 19407 33 20 13 20 0 8 0 lockfpl 104 1457 0 1453 2 1 1 2 0 8 0 lockfspl 48 662 0 658 1 0 1 1 0 8 0 sessionpl 144 52 0 43 1 0 1 1 0 8 0 pgrppl 48 110 0 93 1 0 1 1 0 8 0 ucredpl 104 3752 0 3739 1 0 1 1 0 8 0 zombiepl 144 3657 0 3656 1 0 1 1 0 8 0 processpl 1232 2969 0 2914 5 0 5 5 0 8 0 procpl 664 6801 0 6735 7 0 7 7 0 8 0 sosppl 168 15 0 15 4 4 0 1 0 8 0 sockpl 752 5109 0 5073 44 36 8 23 0 8 3 mcl64k 65536 21 0 0 3 0 3 3 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 6 0 0 1 0 1 1 0 8 0 mcl4k 4096 128 0 0 16 0 16 16 0 8 0 mcl2k2 2112 2 0 0 1 0 1 1 0 8 0 mcl2k 2048 34 0 0 5 0 5 5 0 8 0 mtagpl 96 23 0 0 1 0 1 1 0 8 0 mbufpl 256 1192 0 0 75 0 75 75 0 8 0 bufpl 280 20457 0 14313 440 0 440 440 0 8 0 anonpl 32 11508 0 0 93 0 93 93 0 246 0 amapchunkpl 152 82756 0 82258 43 20 23 31 0 158 1 amappl16 200 7792 0 7715 48 38 10 27 0 8 3 amappl15 192 12 0 12 2 2 0 1 0 8 0 amappl14 184 176 0 164 1 0 1 1 0 8 0 amappl13 176 3 0 3 1 1 0 1 0 8 0 amappl12 168 3948 0 3916 3 1 2 2 0 8 0 amappl11 160 49 0 35 1 0 1 1 0 8 0 amappl10 152 6 0 5 1 0 1 1 0 8 0 amappl9 144 247 0 247 1 1 0 1 0 8 0 amappl8 136 23 0 20 1 0 1 1 0 8 0 amappl7 128 172 0 160 1 0 1 1 0 8 0 amappl6 120 474 0 470 1 0 1 1 0 8 0 amappl5 112 213 0 202 1 0 1 1 0 8 0 amappl4 104 358 0 337 1 0 1 1 0 8 0 amappl3 96 17369 0 17258 5 1 4 4 0 8 0 amappl2 88 1037 0 965 2 0 2 2 0 8 0 amappl1 80 21872 0 21263 20 5 15 15 0 8 0 amappl 88 23480 0 23313 5 0 5 5 0 92 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 dma512 512 1 0 1 1 1 0 1 0 8 0 dma256 256 8 0 8 3 3 0 1 0 8 0 dma128 128 257 0 257 4 4 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 19 0 18 1 0 1 1 0 8 0 aobjpl 72 136 0 6 3 0 3 3 0 8 0 uaddrrnd 24 2939 0 2907 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2939 0 2907 1 0 1 1 0 8 0 vmmpekpl 168 23338 0 23282 3 0 3 3 0 8 0 vmmpepl 168 187090 0 184987 114 11 103 112 0 357 0 vmsppl 488 2938 0 2907 6 1 5 5 0 8 0 rwobjpl 80 53994 0 46937 149 0 149 149 0 8 0 pdppl 4096 5886 0 5814 145 71 74 88 0 8 2 pvpl 32 18921 0 0 154 1 153 153 0 265 0 pmappl 256 2938 0 2907 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 431 0 120 10 0 10 10 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff837a7ff0) 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(ffffffff839c86e0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839c86e0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 intr_handler(ffff80003c4d7150,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x38 sys/dev/kcov.c:-1 PHYS_TO_VM_PAGE(6f9f5000) at PHYS_TO_VM_PAGE+0x127 vm_physseg_find sys/uvm/uvm_page.c:1178 [inline] PHYS_TO_VM_PAGE(6f9f5000) at PHYS_TO_VM_PAGE+0x127 sys/uvm/uvm_page.c:1198 pmap_enter(fffffd800b102100,bf6b25d4000,6f9f5000,4,20) at pmap_enter+0x818 sys/arch/amd64/amd64/pmap.c:-1 uvm_fault_lower_lookup(ffff80003c4d75b0,ffff80003c4d75e8,ffff80003c4d7530) at uvm_fault_lower_lookup+0x3d6 sys/uvm/uvm_fault.c:-1 uvm_fault_lower(ffff80003c4d75b0,ffff80003c4d75e8,ffff80003c4d7530) at uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1370 uvm_fault(fffffd806b9b75d0,bf6b25d3000,0,4) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c4d7740,bf6b25d3f5a) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003c4d7740) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 end trace frame: 0xffff80003c4d77c0, count: 0 ddb{0}> trace x86_ipi_db(ffffffff837a7ff0) 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(ffffffff839c86e0) at __mp_lock+0x1a3 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff839c86e0) at __mp_lock+0x1a3 sys/kern/kern_lock.c:165 intr_handler(ffff80003c4d7150,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __sanitizer_cov_trace_pc() at __sanitizer_cov_trace_pc+0x38 sys/dev/kcov.c:-1 PHYS_TO_VM_PAGE(6f9f5000) at PHYS_TO_VM_PAGE+0x127 vm_physseg_find sys/uvm/uvm_page.c:1178 [inline] PHYS_TO_VM_PAGE(6f9f5000) at PHYS_TO_VM_PAGE+0x127 sys/uvm/uvm_page.c:1198 pmap_enter(fffffd800b102100,bf6b25d4000,6f9f5000,4,20) at pmap_enter+0x818 sys/arch/amd64/amd64/pmap.c:-1 uvm_fault_lower_lookup(ffff80003c4d75b0,ffff80003c4d75e8,ffff80003c4d7530) at uvm_fault_lower_lookup+0x3d6 sys/uvm/uvm_fault.c:-1 uvm_fault_lower(ffff80003c4d75b0,ffff80003c4d75e8,ffff80003c4d7530) at uvm_fault_lower+0x89 sys/uvm/uvm_fault.c:1370 uvm_fault(fffffd806b9b75d0,bf6b25d3000,0,4) at uvm_fault+0x274 sys/uvm/uvm_fault.c:-1 upageflttrap(ffff80003c4d7740,bf6b25d3f5a) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 usertrap(ffff80003c4d7740) at usertrap+0x3c6 sys/arch/amd64/amd64/trap.c:605 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7cef76784980, count: -15 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(ffffffff833728a0) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833b0072,ffffffff833bc121,3b9,ffffffff833e5e53) at __assert+0x29 sys/kern/subr_prf.c:-1 refcnt_finalize(ffff80002a386950,ffffffff833692c3) at refcnt_finalize+0x1db sys/kern/kern_synch.c:954 pppx_if_destroy(205b9a,ffff80002a386948) at pppx_if_destroy+0x3d sys/net/if_pppx.c:794 pppxclose(205b9a,2,2000,ffff80003c458fb8) at pppxclose+0xa0 sys/net/if_pppx.c:541 spec_close(ffff80003c47b5e0) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805d8c82a0,2,fffffd80097fb138,ffff80003c458fb8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805fe31ed0,ffff80003c458fb8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805fe31ed0,ffff80003c458fb8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805fe31ed0,ffff80003c458fb8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805fe31ed0,ffff80003c458fb8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c458fb8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c458fb8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c458fb8,ffff80003c47b950,ffff80003c47b8a0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 end trace frame: 0xffff80003c47b940, count: 0 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833728a0) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff833b0072,ffffffff833bc121,3b9,ffffffff833e5e53) at __assert+0x29 sys/kern/subr_prf.c:-1 refcnt_finalize(ffff80002a386950,ffffffff833692c3) at refcnt_finalize+0x1db sys/kern/kern_synch.c:954 pppx_if_destroy(205b9a,ffff80002a386948) at pppx_if_destroy+0x3d sys/net/if_pppx.c:794 pppxclose(205b9a,2,2000,ffff80003c458fb8) at pppxclose+0xa0 sys/net/if_pppx.c:541 spec_close(ffff80003c47b5e0) at spec_close+0x417 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805d8c82a0,2,fffffd80097fb138,ffff80003c458fb8) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd805fe31ed0,ffff80003c458fb8) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd805fe31ed0,ffff80003c458fb8) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd805fe31ed0,ffff80003c458fb8) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd805fe31ed0,ffff80003c458fb8) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80003c458fb8) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80003c458fb8,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80003c458fb8,ffff80003c47b950,ffff80003c47b8a0) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003c47b950) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c47b950) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x74bf7951c910, count: -16