login: panic: pmap_remove_ptes: unmanaged page marked PG_PVLIST: va 0xebfdd860000, opte 0x3efff Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *293493 69888 0 0x14000 0x200 1 reaper 263791 63647 0 0x14000 0x40000200 0 softclock db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff828f0d20) at panic+0x17b sys/kern/subr_prf.c:198 pmap_remove_ptes(fffffd807df3c2e8,fffffd8008529ba0,7f875feec268,ebfdd84d000,ebfdd861000,0,7ddea3e27f9ac10f) at pmap_remove_ptes+0x33e pmap_do_remove(fffffd807df3c2e8,ebfdd84d000,ebfdd861000,0) at pmap_do_remove+0x410 sys/arch/amd64/amd64/pmap.c:1896 uvm_unmap_kill_entry_withlock(fffffd8064871530,fffffd806b69c8c0,0) at uvm_unmap_kill_entry_withlock+0x1b1 sys/uvm/uvm_map.c:1897 uvm_map_teardown(fffffd8064871530) at uvm_map_teardown+0x1c7 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd8064871530) at uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2534 uvmspace_free(fffffd8064871530) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3461 reaper(ffff80002a149488) at reaper+0x197 sys/kern/kern_exit.c:463 end trace frame: 0x0, count: 7 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: pmap_remove_ptes: unmanaged page marked PG_PVLIST: va 0xebfdd860000, opte 0x3efff ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff828f0d20) at panic+0x17b sys/kern/subr_prf.c:198 pmap_remove_ptes(fffffd807df3c2e8,fffffd8008529ba0,7f875feec268,ebfdd84d000,ebfdd861000,0,7ddea3e27f9ac10f) at pmap_remove_ptes+0x33e pmap_do_remove(fffffd807df3c2e8,ebfdd84d000,ebfdd861000,0) at pmap_do_remove+0x410 sys/arch/amd64/amd64/pmap.c:1896 uvm_unmap_kill_entry_withlock(fffffd8064871530,fffffd806b69c8c0,0) at uvm_unmap_kill_entry_withlock+0x1b1 sys/uvm/uvm_map.c:1897 uvm_map_teardown(fffffd8064871530) at uvm_map_teardown+0x1c7 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd8064871530) at uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2534 uvmspace_free(fffffd8064871530) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3461 reaper(ffff80002a149488) at reaper+0x197 sys/kern/kern_exit.c:463 end trace frame: 0x0, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a155920 rbx 0xffff800029ceccdf rdx 0 rcx 0xffff80002a149488 rax 0xffff800029cebff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x6562e8858117fafd r11 0x5a6f7cea8ec68f03 r12 0xffff800029cecae0 r13 0 r14 0 r15 0x1 rip 0xffffffff8283b48c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002a155910 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (reaper) tid=293493 pid=69888 tcnt=1 stat=onproc flags process=14000 proc=200 runpri=4, usrpri=58, slppri=4, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a149718,0xffff80002a149208 process=0xffff80002a15b9b8 user=0xffff80002a150000, vmspace=0xffffffff82da0858 estcpu=8, cpticks=7, pctcpu=6.36, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 54771 383294 12955 0 2 0x8000000 syz-executor.6 54771 62848 12955 0 3 0xc000080 fsleep syz-executor.6 32342 313273 17998 0 2 0x8000000 syz-executor.2 32342 379928 17998 0 3 0xc000080 fsleep syz-executor.2 22307 492121 72846 0 2 0x8000000 syz-executor.0 22307 11054 72846 0 3 0xc000080 netcon syz-executor.0 43184 357685 77228 0 2 0x8000000 syz-executor.3 43184 188285 77228 0 3 0xc000080 fsleep syz-executor.3 43184 43888 77228 0 2 0xc000000 syz-executor.3 93703 173567 48316 0 2 0x8000000 syz-executor.1 93703 184269 48316 0 3 0xc000080 fsleep syz-executor.1 3853 369336 90604 0 2 0x8000010 syz-executor.4 3853 185675 90604 0 3 0xc000090 netcon2 syz-executor.4 84251 26201 79998 0 2 0x8000000 syz-executor.7 84251 226925 79998 0 3 0xc000080 ttyout syz-executor.7 84251 373693 79998 0 3 0xc000080 fsleep syz-executor.7 72846 342933 19378 0 2 0x8000002 syz-executor.0 81828 441108 19378 0 2 0x8000482 syz-executor.5 51927 56924 1 0 3 0x18100083 ttyin getty 79998 303864 19378 0 2 0x8000002 syz-executor.7 48316 258370 19378 0 2 0x8000482 syz-executor.1 77228 63535 19378 0 2 0x8000482 syz-executor.3 90604 135200 19378 0 2 0x8000002 syz-executor.4 17998 144023 19378 0 2 0x8000482 syz-executor.2 12955 288050 19378 0 3 0x8000082 nanoslp syz-executor.6 23874 41946 0 0 3 0x14280 nfsidl nfsio 67720 145778 0 0 3 0x14280 nfsidl nfsio 26180 438256 0 0 3 0x14280 nfsidl nfsio 19534 203485 0 0 3 0x14280 nfsidl nfsio 52872 520651 0 0 3 0x14280 nfsidl nfsio 70470 30076 0 0 3 0x14280 nfsidl nfsio 44826 288195 0 0 3 0x14280 nfsidl nfsio 26275 261153 0 0 3 0x14280 nfsidl nfsio 98636 83591 0 0 3 0x14280 nfsidl nfsio 94728 282159 0 0 3 0x14280 nfsidl nfsio 27917 74508 0 0 3 0x14280 nfsidl nfsio 81667 382681 0 0 3 0x14280 nfsidl nfsio 57711 497150 0 0 3 0x14280 nfsidl nfsio 56871 325981 0 0 3 0x14280 nfsidl nfsio 66917 66591 0 0 3 0x14280 nfsidl nfsio 70721 379224 0 0 3 0x14280 nfsidl nfsio 76509 87557 0 0 3 0x14280 nfsidl nfsio 96167 485796 0 0 3 0x14280 nfsidl nfsio 42887 491378 0 0 3 0x14280 nfsidl nfsio 41197 349335 0 0 3 0x14280 nfsidl nfsio 22258 512079 0 0 3 0x14200 bored sosplice 19378 204523 37685 0 3 0x1a000082 thrsleep syz-fuzzer 19378 182104 37685 0 3 0x1e000082 thrsleep syz-fuzzer 19378 97697 37685 0 3 0x1e000082 thrsleep syz-fuzzer 19378 28390 37685 0 3 0x1e000082 wait syz-fuzzer 19378 418363 37685 0 3 0x1e000082 thrsleep syz-fuzzer 19378 425772 37685 0 3 0x1e000082 wait syz-fuzzer 19378 380333 37685 0 3 0x1e000082 wait syz-fuzzer 19378 139293 37685 0 3 0x1e000082 wait syz-fuzzer 19378 87604 37685 0 3 0x1e000082 thrsleep syz-fuzzer 19378 84957 37685 0 3 0x1e000082 kqread syz-fuzzer 19378 187181 37685 0 3 0x1e000082 thrsleep syz-fuzzer 19378 479045 37685 0 3 0x1e000082 wait syz-fuzzer 19378 236039 37685 0 3 0x1e000082 thrsleep syz-fuzzer 19378 180205 37685 0 3 0x1e000082 wait syz-fuzzer 19378 436931 37685 0 3 0x1e000082 wait syz-fuzzer 19378 493389 37685 0 3 0x1e000082 wait syz-fuzzer 37685 312621 4283 0 3 0x810008a sigsusp ksh 4283 3862 88559 0 3 0x1800009a kqread sshd 88559 157792 1 0 3 0x18000088 kqread sshd 59150 131574 61705 74 3 0x19100092 bpf pflogd 61705 180555 1 0 3 0x18000080 sbwait pflogd 48128 80469 71985 73 3 0x19100090 kqread syslogd 71985 136519 1 0 3 0x18100082 sbwait syslogd 54704 384090 1 0 3 0x18100080 kqread resolvd 23371 284530 8511 77 3 0x18100092 kqread dhcpleased 3170 20279 8511 77 3 0x18100092 kqread dhcpleased 8511 504121 1 0 3 0x18000080 kqread dhcpleased 62116 183607 0 0 3 0x14200 bored smr 19294 308743 0 0 2 0x14200 zerothread 60083 142805 0 0 3 0x14200 aiodoned aiodoned 60503 487016 0 0 3 0x14200 syncer update 13395 19312 0 0 3 0x14200 cleaner cleaner *69888 293493 0 0 7 0x14200 reaper 23618 425219 0 0 3 0x14200 pgdaemon pagedaemon 39832 428627 0 0 3 0x14200 bored viomb 89499 233489 0 0 3 0x40014200 acpi0 acpi0 54045 62276 0 0 3 0x40014200 idle1 43899 503905 0 0 3 0x14200 bored softnet3 94213 473181 0 0 3 0x14200 bored softnet2 61956 197377 0 0 3 0x14200 bored softnet1 68516 85373 0 0 3 0x14200 bored softnet0 83153 228958 0 0 3 0x14200 bored systqmp 52967 489697 0 0 3 0x14200 bored systq 55076 31780 0 0 3 0x14200 tmoslp softclockmp 63647 263791 0 0 7 0x40014200 softclock 76411 421455 0 0 3 0x40014200 idle0 1 49351 0 0 3 0x8080082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &pmap->pm_mtx r = 0 (0xfffffd807df3c2f8) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 mtx_enter_try+0x103 #2 mtx_enter+0x4e sys/kern/kern_lock.c:266 #3 pmap_do_remove+0x99 rcr3 machine/cpufunc.h:141 [inline] #3 pmap_do_remove+0x99 pmap_map_ptes sys/arch/amd64/amd64/pmap.c:425 [inline] #3 pmap_do_remove+0x99 sys/arch/amd64/amd64/pmap.c:1800 #4 uvm_unmap_kill_entry_withlock+0x1b1 sys/uvm/uvm_map.c:1897 #5 uvm_map_teardown+0x1c7 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] #5 uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2534 #6 uvmspace_free+0xa6 sys/uvm/uvm_map.c:3461 #7 reaper+0x197 sys/kern/kern_exit.c:463 #8 proc_trampoline+0x10 Process 69888 (reaper) thread 0xffff80002a149488 (293493) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10210 6630K 6760K 166960K 12527 0 pcb 17 12K 12K 166960K 215 0 rtable 243 8K 8K 166960K 1106 0 pf 34 9K 10K 166960K 148 0 ifaddr 46 16K 16K 166960K 154 0 ifgroup 59 2K 2K 166960K 240 0 sysctl 4 1K 1K 166960K 6 0 counters 66 36K 36K 166960K 152 0 ioctlops 0 0K 4K 166960K 1565 0 iov 0 0K 16K 166960K 113 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1427 90K 90K 166960K 2632 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 45 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 1K 166960K 192 0 dirhash 12 2K 2K 166960K 24 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 17 61K 85K 166960K 1830 0 sigio 0 0K 0K 166960K 108 0 proc 71 91K 128K 166960K 1207 0 subproc 104 6K 6K 166960K 354 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 2 0K 0K 166960K 232 0 in_multi 100 7K 7K 166960K 365 0 ether_multi 1 0K 0K 166960K 10 0 mrt 1 0K 0K 166960K 6 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 845 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 350 129K 134K 166960K 18298 0 UVM aobj 131 4K 4K 166960K 139 0 pinsyscall 41 82K 108K 166960K 3553 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 1K 166960K 126 0 NDP 13 0K 1K 166960K 110 0 temp 75 6816K 6892K 166960K 40672 0 kqueue 12 18K 28K 166960K 259 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 120 200 0 197 1 0 1 1 0 8 0 rtentry 112 371 0 260 5 1 4 4 0 8 0 unpcb 144 1374 0 1357 10 8 2 6 0 8 1 syncache 336 19 0 19 7 6 1 1 0 8 1 tcpqe 32 62 0 62 4 4 0 1 0 8 0 tcpcb 808 696 0 677 19 17 2 8 0 8 0 arp 120 71 0 53 1 0 1 1 0 8 0 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 3 0 3 1 1 0 1 0 8 0 inpcb 392 2029 0 2003 29 25 4 9 0 8 0 nd6 136 91 0 65 1 0 1 1 0 8 0 pkpcb 40 4 0 4 4 3 1 1 0 8 1 kcovpl 48 27 0 19 1 0 1 1 0 8 0 ppxss 1168 4 0 4 4 4 0 1 0 8 0 pffrag 232 11 0 5 1 0 1 1 0 482 0 pffrnode 88 11 0 5 1 0 1 1 0 8 0 pffrent 40 58 0 52 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 24 157 0 92 1 0 1 1 0 8 0 pfstkey 128 157 0 92 3 0 3 3 0 8 0 pfstate 376 157 0 92 7 0 7 7 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 1368 0 903 40 10 30 30 0 8 0 art_table 32 1370 0 903 4 0 4 4 0 8 0 art_node 16 367 0 266 1 0 1 1 0 8 0 semupl 112 3 0 3 1 1 0 1 0 8 0 semapl 112 190 0 180 1 0 1 1 0 8 0 shmpl 112 136 0 8 4 0 4 4 0 8 0 dirhash 1024 25 0 8 3 0 3 3 0 8 0 dino2pl 256 4280 0 2756 96 0 96 96 0 8 0 ffsino 272 4280 0 2756 103 0 103 103 0 8 0 nchpl 144 6854 0 5112 67 0 67 67 0 8 0 uvmvnodes 80 5073 0 0 104 0 104 104 0 8 0 vnodes 216 5073 0 0 282 0 282 282 0 8 0 namei 1024 24564 0 24564 4 3 1 2 0 8 1 percpumem 16 90 0 43 1 0 1 1 0 8 0 vcpupl 3904 9 0 2 2 0 2 2 0 8 0 vmpool 696 11 0 4 1 0 1 1 0 8 0 kstatmem 264 112 0 86 2 0 2 2 0 8 0 scsiplug 72 6 0 6 4 3 1 1 0 8 1 scxspl 216 37390 0 37390 12 11 1 8 1 8 1 plimitpl 152 264 0 247 1 0 1 1 0 8 0 sigapl 424 2139 0 2069 8 0 8 8 0 8 0 futexpl 64 22323 0 22318 3 2 1 1 0 8 0 knotepl 120 628 0 0 18 0 18 18 0 8 0 kqueuepl 216 580 0 572 8 7 1 5 0 8 0 pipepl 320 338 0 310 3 0 3 3 0 8 0 fdescpl 496 2099 0 2069 8 3 5 5 0 8 0 filepl 152 13326 0 13069 34 19 15 17 0 8 3 lockfpl 104 576 0 574 2 1 1 2 0 8 0 lockfspl 48 242 0 240 1 0 1 1 0 8 0 sessionpl 144 46 0 29 1 0 1 1 0 8 0 pgrppl 48 65 0 48 1 0 1 1 0 8 0 ucredpl 104 2718 0 2705 1 0 1 1 0 8 0 zombiepl 144 2070 0 2069 2 1 1 1 0 8 0 processpl 1136 2139 0 2069 6 0 6 6 0 8 0 procpl 656 4176 0 4082 9 0 9 9 0 8 0 srpgc 96 16 0 16 3 3 0 1 0 8 0 sosppl 168 47 0 44 6 5 1 1 0 8 0 sockpl 664 3690 0 3643 35 30 5 14 0 8 0 mcl64k 65536 7 0 0 1 0 1 1 0 8 0 mcl16k 16384 7 0 0 1 0 1 1 0 8 0 mcl12k 12288 6 0 0 1 0 1 1 0 8 0 mcl9k 9216 3 0 0 1 0 1 1 0 8 0 mcl8k 8192 10 0 0 2 0 2 2 0 8 0 mcl4k 4096 23 0 0 3 0 3 3 0 8 0 mcl2k2 2112 7 0 0 1 0 1 1 0 8 0 mcl2k 2048 314 0 0 40 0 40 40 0 8 0 mtagpl 96 79 0 0 2 0 2 2 0 8 0 mbufpl 256 1143 0 0 65 0 65 65 0 8 0 bufpl 280 9302 0 3047 448 0 448 448 0 8 0 anonpl 24 381833 0 375275 111 56 55 86 0 186 0 amapchunkpl 152 58974 0 58246 57 26 31 42 0 158 2 amappl16 200 8932 0 8791 66 55 11 21 0 8 0 amappl15 192 10 0 10 1 1 0 1 0 8 0 amappl14 184 221 0 207 2 1 1 2 0 8 0 amappl13 176 11 0 11 1 1 0 1 0 8 0 amappl12 168 3072 0 3038 4 2 2 3 0 8 0 amappl11 160 75 0 61 1 0 1 1 0 8 0 amappl10 152 60 0 48 1 0 1 1 0 8 0 amappl9 144 177 0 176 4 3 1 1 0 8 0 amappl8 136 409 0 319 4 0 4 4 0 8 0 amappl7 128 59 0 44 1 0 1 1 0 8 0 amappl6 120 648 0 628 2 1 1 2 0 8 0 amappl5 112 280 0 265 1 0 1 1 0 8 0 amappl4 104 741 0 702 3 1 2 3 0 8 0 amappl3 96 11494 0 11399 3 0 3 3 0 8 0 amappl2 88 2649 0 2564 5 3 2 4 0 8 0 amappl1 80 17340 0 16790 23 10 13 23 0 8 0 amappl 88 17436 0 17218 6 0 6 6 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 72 138 0 8 3 0 3 3 0 8 0 uaddrrnd 24 2110 0 2073 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2110 0 2073 1 0 1 1 0 8 0 vmmpekpl 168 19018 0 18948 4 0 4 4 0 8 0 vmmpepl 168 151398 0 149234 164 52 112 121 0 357 7 vmsppl 440 2109 0 2072 6 1 5 5 0 8 0 rwobjpl 56 48098 0 41645 97 5 92 92 0 8 0 pdppl 4096 4227 0 4151 187 111 76 79 0 8 0 pvpl 32 48745 0 0 397 3 394 395 0 265 0 pmappl 248 2109 0 2072 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 580 0 153 13 0 13 13 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82d27ff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff82db3828) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82db3828) at __mp_lock+0x122 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82db3828,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x491 sys/kern/sched_bsd.c:470 sleep_finish(0,1) at sleep_finish+0x19a sys/kern/kern_synch.c:414 msleep(ffffffff82db5740,ffffffff82cf0500,0,ffffffff82958151,0) at msleep+0xeb sys/kern/kern_synch.c:249 softclock_thread(ffff8000ffffecd0) at softclock_thread+0xcf sys/kern/kern_timeout.c:810 end trace frame: 0x0, count: 6 ddb{0}> trace x86_ipi_db(ffffffff82d27ff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __mp_lock(ffffffff82db3828) at __mp_lock+0x122 __mp_lock_spin sys/kern/kern_lock.c:116 [inline] __mp_lock(ffffffff82db3828) at __mp_lock+0x122 sys/kern/kern_lock.c:147 __mp_acquire_count(ffffffff82db3828,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 mi_switch() at mi_switch+0x491 sys/kern/sched_bsd.c:470 sleep_finish(0,1) at sleep_finish+0x19a sys/kern/kern_synch.c:414 msleep(ffffffff82db5740,ffffffff82cf0500,0,ffffffff82958151,0) at msleep+0xeb sys/kern/kern_synch.c:249 softclock_thread(ffff8000ffffecd0) at softclock_thread+0xcf sys/kern/kern_timeout.c:810 end trace frame: 0x0, count: -9 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x1c: addq $0x8,%rsp db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff828f0d20) at panic+0x17b sys/kern/subr_prf.c:198 pmap_remove_ptes(fffffd807df3c2e8,fffffd8008529ba0,7f875feec268,ebfdd84d000,ebfdd861000,0,7ddea3e27f9ac10f) at pmap_remove_ptes+0x33e pmap_do_remove(fffffd807df3c2e8,ebfdd84d000,ebfdd861000,0) at pmap_do_remove+0x410 sys/arch/amd64/amd64/pmap.c:1896 uvm_unmap_kill_entry_withlock(fffffd8064871530,fffffd806b69c8c0,0) at uvm_unmap_kill_entry_withlock+0x1b1 sys/uvm/uvm_map.c:1897 uvm_map_teardown(fffffd8064871530) at uvm_map_teardown+0x1c7 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd8064871530) at uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2534 uvmspace_free(fffffd8064871530) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3461 reaper(ffff80002a149488) at reaper+0x197 sys/kern/kern_exit.c:463 end trace frame: 0x0, count: 7 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff828f0d20) at panic+0x17b sys/kern/subr_prf.c:198 pmap_remove_ptes(fffffd807df3c2e8,fffffd8008529ba0,7f875feec268,ebfdd84d000,ebfdd861000,0,7ddea3e27f9ac10f) at pmap_remove_ptes+0x33e pmap_do_remove(fffffd807df3c2e8,ebfdd84d000,ebfdd861000,0) at pmap_do_remove+0x410 sys/arch/amd64/amd64/pmap.c:1896 uvm_unmap_kill_entry_withlock(fffffd8064871530,fffffd806b69c8c0,0) at uvm_unmap_kill_entry_withlock+0x1b1 sys/uvm/uvm_map.c:1897 uvm_map_teardown(fffffd8064871530) at uvm_map_teardown+0x1c7 uvm_map_addr_RBT_LEFT sys/uvm/uvm_map.h:176 [inline] uvm_map_teardown(fffffd8064871530) at uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2534 uvmspace_free(fffffd8064871530) at uvmspace_free+0xa6 sys/uvm/uvm_map.c:3461 reaper(ffff80002a149488) at reaper+0x197 sys/kern/kern_exit.c:463 end trace frame: 0x0, count: -8