panic: kernel diagnostic assertion "uvm_page_owner_locked_p(pg)" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 1248 Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 232061 55316 0 0 0 0 syz-executor *484380 26117 0 0x14000 0x200 1K reaper db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830e2798) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff8309ab51,ffffffff83040d77,4e0,ffffffff830f0000) at __assert+0x29 uvm_pageunwire(fffffd800848a0a0) at uvm_pageunwire+0x1dd sys/uvm/uvm_page.c:1248 uvm_fault_unwire_locked(fffffd806cc46018,50623e96000,50624095000) at uvm_fault_unwire_locked+0x33e sys/uvm/uvm_fault.c:1695 uvm_unmap_kill_entry_withlock(fffffd806cc46018,fffffd8069ca23c0,0) at uvm_unmap_kill_entry_withlock+0x86 sys/uvm/uvm_map.c:1862 uvm_map_teardown(fffffd806cc46018) at uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2498 uvmspace_free(fffffd806cc46018) at uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 reaper(ffff800029fd8f38) at reaper+0x246 sys/kern/kern_exit.c:477 end trace frame: 0x0, count: 6 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 "uvm_page_owner_locked_p(pg)" failed: file "/syzkaller/managers/multicore/kernel/sys/uvm/uvm_page.c", line 1248 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830e2798) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff8309ab51,ffffffff83040d77,4e0,ffffffff830f0000) at __assert+0x29 uvm_pageunwire(fffffd800848a0a0) at uvm_pageunwire+0x1dd sys/uvm/uvm_page.c:1248 uvm_fault_unwire_locked(fffffd806cc46018,50623e96000,50624095000) at uvm_fault_unwire_locked+0x33e sys/uvm/uvm_fault.c:1695 uvm_unmap_kill_entry_withlock(fffffd806cc46018,fffffd8069ca23c0,0) at uvm_unmap_kill_entry_withlock+0x86 sys/uvm/uvm_map.c:1862 uvm_map_teardown(fffffd806cc46018) at uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2498 uvmspace_free(fffffd806cc46018) at uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 reaper(ffff800029fd8f38) at reaper+0x246 sys/kern/kern_exit.c:477 end trace frame: 0x0, count: -9 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff800029fe4e90 rbx 0xffff800029b7cdbf rdx 0 rcx 0xffff800029fd8f38 rax 0xffff800029b7bff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x87e412babe68bcba r11 0x4f552595e7ae031f r12 0xffff800029b7cbc0 r13 0 r14 0 r15 0x1 rip 0xffffffff828f8af5 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff800029fe4e80 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (reaper) tid=484380 pid=26117 tcnt=1 stat=onproc flags process=14000 proc=200 runpri=86, usrpri=86, slppri=4, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800029fd91c0,0xffff800029fd87b0 process=0xffff800029feb668 user=0xffff800029fe0000, vmspace=0xffffffff834fce70 estcpu=36, cpticks=148, pctcpu=18.10, user=0, sys=13352, intr=24 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 55316 232061 96872 0 7 0 syz-executor 31160 316551 72272 0 3 0x82 wait syz-executor 66905 252640 72272 0 2 0x2 syz-executor 33888 377463 72272 0 3 0x82 wait syz-executor 34098 372011 72272 0 3 0x82 wait syz-executor 29721 136227 72272 0 3 0x82 wait syz-executor 96872 77476 72272 0 3 0x82 nanoslp syz-executor 78365 11935 72272 0 3 0x82 wait syz-executor 7310 66880 1 0 3 0x100083 ttyin getty 29949 524230 0 0 3 0x14280 nfsidl nfsio 18949 376595 0 0 3 0x14280 nfsidl nfsio 40227 519630 0 0 3 0x14280 nfsidl nfsio 18414 405972 0 0 3 0x14280 nfsidl nfsio 62241 202401 0 0 3 0x14280 nfsidl nfsio 36906 408229 0 0 3 0x14280 nfsidl nfsio 35116 175765 0 0 3 0x14280 nfsidl nfsio 88163 233827 0 0 3 0x14280 nfsidl nfsio 28403 91671 0 0 3 0x14280 nfsidl nfsio 45731 392857 0 0 3 0x14280 nfsidl nfsio 52526 426919 0 0 3 0x14280 nfsidl nfsio 80473 243323 0 0 3 0x14280 nfsidl nfsio 58697 439117 0 0 3 0x14280 nfsidl nfsio 97957 484680 0 0 3 0x14280 nfsidl nfsio 70162 485363 0 0 3 0x14280 nfsidl nfsio 51164 183952 0 0 3 0x14280 nfsidl nfsio 22706 290792 0 0 3 0x14280 nfsidl nfsio 22855 458861 0 0 3 0x14280 nfsidl nfsio 75932 299533 0 0 3 0x14280 nfsidl nfsio 71975 307178 0 0 3 0x14280 nfsidl nfsio 78557 181182 0 0 3 0x14200 bored sosplice 72272 26207 39912 0 3 0x82 wait syz-executor 39912 111030 57374 0 3 0x10008a sigsusp ksh 57374 321449 95169 0 3 0x98 kqread sshd-session 95169 70774 63386 0 3 0x92 kqread sshd-session 63386 233699 1 0 3 0x88 kqread sshd 57801 420152 50685 74 3 0x1100092 bpf pflogd 50685 524146 1 0 3 0x80 sbwait pflogd 20625 184919 91294 73 3 0x1100010 ffs_fsync syslogd 91294 424924 1 0 3 0x100082 sbwait syslogd 88276 502450 1 0 3 0x100080 kqread resolvd 11139 264431 20146 77 3 0x100092 kqread dhcpleased 13551 59805 20146 77 3 0x100092 kqread dhcpleased 20146 351353 1 0 3 0x80 kqread dhcpleased 48886 37161 0 0 3 0x14200 bored smr 90297 378568 0 0 3 0x14200 pgzero zerothread 65421 251989 0 0 3 0x14200 aiodoned aiodoned 96548 186893 0 0 3 0x14200 syncer update 18566 442904 0 0 3 0x14200 cleaner cleaner *26117 484380 0 0 7 0x14200 reaper 91664 17765 0 0 3 0x14200 pgdaemon pagedaemon 81720 475304 0 0 3 0x14200 bored viomb 19742 204874 0 0 3 0x40014200 acpi0 acpi0 31685 193294 0 0 3 0x40014200 idle1 96546 161481 0 0 3 0x14200 bored softnet3 20265 422665 0 0 3 0x14200 bored softnet2 25745 244949 0 0 3 0x14200 bored softnet1 73084 120482 0 0 3 0x14200 bored softnet0 89681 74951 0 0 3 0x14200 bored systqmp 48373 233218 0 0 3 0x14200 bored systq 53530 269926 0 0 3 0x14200 tmoslp softclockmp 64340 466821 0 0 3 0x40014200 tmoslp softclock 87745 210109 0 0 3 0x40014200 idle0 1 144380 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 1: exclusive mutex &uvm.pageqlock r = 0 (0xffffffff834f9790) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 mtx_enter_try+0x178 #2 mtx_enter+0x60 sys/kern/kern_lock.c:239 #3 uvm_fault_unwire_locked+0x32d sys/uvm/uvm_fault.c:1694 #4 uvm_unmap_kill_entry_withlock+0x86 sys/uvm/uvm_map.c:1862 #5 uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2498 #6 uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 #7 reaper+0x246 sys/kern/kern_exit.c:477 #8 proc_trampoline+0x10 Process 55316 (syz-executor) thread 0xffff80002ef7c030 (232061) Process 66905 (syz-executor) thread 0xffff8000367a7988 (252640) Process 20625 (syslogd) thread 0xffff8000ffffd960 (184919) Process 26117 (reaper) thread 0xffff800029fd8f38 (484380) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10203 11137K 11726K 166960K 14019 0 pcb 17 16K 18K 166960K 435 0 rtable 207 8K 9K 166960K 2622 0 pf 42 19K 26K 166960K 265 0 ifaddr 41 7K 8K 166960K 352 0 ifgroup 64 2K 3K 166960K 396 0 sysctl 3 0K 1K 166960K 10 0 counters 68 36K 37K 166960K 258 0 ioctlops 0 0K 4K 166960K 1797 0 iov 0 0K 24K 166960K 172 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1483 93K 94K 166960K 3951 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 13K 166960K 34 0 VM map 2 1K 1K 166960K 2 0 sem 30 10K 20K 166960K 205 0 dirhash 15 2K 3K 166960K 51 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 10 33K 89K 166960K 2979 0 sigio 0 0K 0K 166960K 39 0 proc 72 91K 128K 166960K 2552 0 subproc 91 5K 6K 166960K 962 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 275 0 in_multi 81 6K 7K 166960K 891 0 ether_multi 1 0K 0K 166960K 11 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 97 440K 440K 166960K 97 0 exec 0 0K 1K 166960K 1632 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 240 91K 92K 166960K 25488 0 UVM aobj 50 5K 6K 166960K 54 0 pinsyscall 35 70K 103K 166960K 5838 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 84 0 NDP 14 0K 1K 166960K 260 0 temp 75 6824K 6896K 166960K 118725 0 kqueue 13 20K 32K 166960K 403 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 120 472 0 469 5 4 1 3 0 8 0 rtentry 112 893 0 804 4 1 3 4 0 8 0 unpcb 144 1800 0 1783 22 20 2 6 0 8 1 syncache 336 17 0 17 7 7 0 1 0 8 0 tcpqe 32 4 0 4 3 3 0 1 0 8 0 tcpcb 808 1126 0 1122 37 31 6 8 0 8 5 arp 120 160 0 142 1 0 1 1 0 8 0 inpcb 336 3313 0 3306 43 38 5 13 0 8 4 nd6 136 240 0 220 1 0 1 1 0 8 0 pkpcb 40 15 0 15 6 6 0 1 0 8 0 kcovpl 48 74 0 67 1 0 1 1 0 8 0 ppxss 1168 24 0 24 9 9 0 1 0 8 0 pfstscr 40 4 0 4 3 3 0 1 0 8 0 pffrag 232 28 0 24 1 0 1 1 0 482 0 pffrnode 88 27 0 23 1 0 1 1 0 8 0 pffrent 40 90 0 86 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 24 217 0 172 1 0 1 1 0 8 0 pfstkey 128 222 0 177 2 0 2 2 0 8 0 pfstate 376 221 0 176 7 1 6 6 0 8 0 pfrule 1344 28 0 22 2 1 1 2 0 8 0 art_heap8 4096 3 0 1 3 1 2 3 0 8 0 art_heap4 256 3553 0 3186 36 8 28 29 0 8 0 art_table 32 3556 0 3187 4 0 4 4 0 8 0 art_node 16 887 0 809 1 0 1 1 0 8 0 sysvmsgpl 40 7 0 4 2 1 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 193 0 165 1 0 1 1 0 8 0 shmpl 112 51 0 4 2 0 2 2 0 8 0 dirhash 1024 43 0 24 3 0 3 3 0 8 0 dino2pl 256 5341 0 3710 103 0 103 103 0 8 0 ffsino 272 5341 0 3710 110 0 110 110 0 8 0 nchpl 144 8270 0 7640 67 3 64 67 0 8 35 uvmvnodes 80 7227 0 0 148 0 148 148 0 8 0 vnodes 216 7227 0 0 402 0 402 402 0 8 0 namei 1024 35038 0 35037 7 6 1 2 0 8 0 percpumem 16 143 0 95 1 0 1 1 0 8 0 kstatmem 264 218 0 190 7 5 2 3 0 8 0 scsiplug 72 5 0 5 2 2 0 1 0 8 0 scxspl 216 62654 0 62651 15 14 1 8 1 8 0 plimitpl 152 416 0 398 1 0 1 1 0 8 0 sigapl 424 3187 0 3117 10 1 9 9 0 8 0 futexpl 64 29173 0 29173 7 6 1 1 0 8 1 knotepl 120 670 0 0 18 0 18 18 0 8 0 kqueuepl 216 892 0 883 15 14 1 5 0 8 0 pipepl 320 499 0 472 6 3 3 6 0 8 0 fdescpl 496 3143 0 3119 8 3 5 5 0 8 0 filepl 152 19175 0 18953 51 38 13 20 0 8 2 lockfpl 104 1182 0 1180 2 1 1 2 0 8 0 lockfspl 48 413 0 411 1 0 1 1 0 8 0 sessionpl 144 103 0 94 1 0 1 1 0 8 0 pgrppl 48 259 0 242 1 0 1 1 0 8 0 ucredpl 104 2857 0 2844 1 0 1 1 0 8 0 zombiepl 144 3124 0 3117 2 1 1 1 0 8 0 processpl 1160 3187 0 3117 7 1 6 6 0 8 0 procpl 648 6424 0 6346 8 0 8 8 0 8 0 srpgc 96 22 0 22 6 6 0 1 0 8 0 sosppl 168 13 0 13 4 4 0 1 0 8 0 sockpl 664 5626 0 5599 53 45 8 14 0 8 5 mcl64k 65536 10 0 0 2 0 2 2 0 8 0 mcl16k 16384 6 0 0 1 0 1 1 0 8 0 mcl12k 12288 3 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 151 0 0 18 1 17 18 0 8 0 mcl2k 2048 64 0 0 5 0 5 5 0 8 0 mtagpl 96 16 0 0 1 0 1 1 0 8 0 mbufpl 256 398 0 0 22 0 22 22 0 8 0 bufpl 280 14961 0 7452 537 0 537 537 0 8 0 anonpl 24 396055 0 385372 117 28 89 92 0 185 24 amapchunkpl 152 80809 0 79984 54 18 36 39 0 158 3 amappl16 200 6419 0 6316 69 54 15 22 0 8 6 amappl15 192 7 0 7 2 2 0 1 0 8 0 amappl14 184 272 0 260 1 0 1 1 0 8 0 amappl13 176 5 0 5 3 3 0 1 0 8 0 amappl12 168 4846 0 4815 3 1 2 2 0 8 0 amappl11 160 52 0 38 1 0 1 1 0 8 0 amappl10 152 10 0 10 1 1 0 1 0 8 0 amappl9 144 215 0 215 1 1 0 1 0 8 0 amappl8 136 17 0 13 1 0 1 1 0 8 0 amappl7 128 245 0 232 1 0 1 1 0 8 0 amappl6 120 823 0 822 1 0 1 1 0 8 0 amappl5 112 409 0 396 1 0 1 1 0 8 0 amappl4 104 558 0 538 1 0 1 1 0 8 0 amappl3 96 16142 0 16029 4 0 4 4 0 8 0 amappl2 88 1724 0 1656 2 0 2 2 0 8 0 amappl1 80 23191 0 22617 15 1 14 15 0 8 0 amappl 88 24398 0 24222 6 1 5 5 0 92 0 dma32768 32768 1 0 1 1 1 0 1 0 8 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 7 0 7 2 2 0 1 0 8 0 dma128 128 254 0 254 2 2 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 53 0 4 1 0 1 1 0 8 0 uaddrrnd 24 3143 0 3113 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 3143 0 3113 1 0 1 1 0 8 0 vmmpekpl 168 25692 0 25619 4 0 4 4 0 8 0 vmmpepl 168 201299 0 199358 140 41 99 103 0 357 7 vmsppl 440 3142 0 3112 6 2 4 5 0 8 0 rwobjpl 56 59683 0 51391 118 1 117 117 0 8 0 pdppl 4096 6293 0 6224 179 109 70 83 0 8 1 pvpl 32 35956 0 0 289 0 289 289 0 265 0 pmappl 248 3142 0 3112 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 591 0 214 12 0 12 12 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8349dff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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(ffffffff835ad028) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835ad028) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff8000371d7ce0,ffff800000079e00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge25_untramp() at Xintr_ioapic_edge25_untramp+0x18f __mp_lock(ffffffff835ad028) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835ad028) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff8000371d7e40,ffff800000079f80) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f Xspllower() at Xspllower+0x1d uvm_fault_lower(ffff8000371d8110,ffff8000371d8148,ffff8000371d8090,0) at uvm_fault_lower+0xbfa sys/uvm/uvm_fault.c:1567 uvm_fault(fffffd806be00008,20000000,0,2) at uvm_fault+0x301 sys/uvm/uvm_fault.c:637 upageflttrap(ffff8000371d8290,20000040) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff8000371d8290) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 end trace frame: 0xffff8000371d8310, count: 0 ddb{0}> trace x86_ipi_db(ffffffff8349dff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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(ffffffff835ad028) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835ad028) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff8000371d7ce0,ffff800000079e00) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge25_untramp() at Xintr_ioapic_edge25_untramp+0x18f __mp_lock(ffffffff835ad028) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff835ad028) at __mp_lock+0x192 sys/kern/kern_lock.c:144 intr_handler(ffff8000371d7e40,ffff800000079f80) at intr_handler+0xe1 sys/arch/amd64/amd64/intr.c:553 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f Xspllower() at Xspllower+0x1d uvm_fault_lower(ffff8000371d8110,ffff8000371d8148,ffff8000371d8090,0) at uvm_fault_lower+0xbfa sys/uvm/uvm_fault.c:1567 uvm_fault(fffffd806be00008,20000000,0,2) at uvm_fault+0x301 sys/uvm/uvm_fault.c:637 upageflttrap(ffff8000371d8290,20000040) at upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff8000371d8290) at usertrap+0x2d8 sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7e5f3ec3e9e0, 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:437 panic(ffffffff830e2798) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff8309ab51,ffffffff83040d77,4e0,ffffffff830f0000) at __assert+0x29 uvm_pageunwire(fffffd800848a0a0) at uvm_pageunwire+0x1dd sys/uvm/uvm_page.c:1248 uvm_fault_unwire_locked(fffffd806cc46018,50623e96000,50624095000) at uvm_fault_unwire_locked+0x33e sys/uvm/uvm_fault.c:1695 uvm_unmap_kill_entry_withlock(fffffd806cc46018,fffffd8069ca23c0,0) at uvm_unmap_kill_entry_withlock+0x86 sys/uvm/uvm_map.c:1862 uvm_map_teardown(fffffd806cc46018) at uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2498 uvmspace_free(fffffd806cc46018) at uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 reaper(ffff800029fd8f38) at reaper+0x246 sys/kern/kern_exit.c:477 end trace frame: 0x0, count: 6 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830e2798) at panic+0x1e5 sys/kern/subr_prf.c:198 __assert(ffffffff8309ab51,ffffffff83040d77,4e0,ffffffff830f0000) at __assert+0x29 uvm_pageunwire(fffffd800848a0a0) at uvm_pageunwire+0x1dd sys/uvm/uvm_page.c:1248 uvm_fault_unwire_locked(fffffd806cc46018,50623e96000,50624095000) at uvm_fault_unwire_locked+0x33e sys/uvm/uvm_fault.c:1695 uvm_unmap_kill_entry_withlock(fffffd806cc46018,fffffd8069ca23c0,0) at uvm_unmap_kill_entry_withlock+0x86 sys/uvm/uvm_map.c:1862 uvm_map_teardown(fffffd806cc46018) at uvm_map_teardown+0x1c7 sys/uvm/uvm_map.c:2498 uvmspace_free(fffffd806cc46018) at uvmspace_free+0xcd sys/uvm/uvm_map.c:3422 reaper(ffff800029fd8f38) at reaper+0x246 sys/kern/kern_exit.c:477 end trace frame: 0x0, count: -9