login: panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/main/kernel/sys/uvm/uvm_page.c", line 144 Stopped at db_enter+0x18: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *397346 74675 0 0x2 0 0 syz-executor.3 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82570166) at panic+0x161 sys/kern/subr_prf.c:202 __assert(ffffffff825e477b,ffffffff825965f7,90,ffffffff8254a7a2) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_pagealloc_pg(fffffd80065d0e00,fffffd806660fa78,d977000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline] uvm_pagealloc_pg(fffffd80065d0e00,fffffd806660fa78,d977000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709 uvm_pagealloc(fffffd806660fa78,d977000,0,3) at uvm_pagealloc+0x1e8 sys/uvm/uvm_page.c:917 pmap_get_ptp(fffffd806660fa68,1b2ef21000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1183 pmap_enter(fffffd806660fa68,1b2ef21000,68375000,3,20) at pmap_enter+0x2a0 uvm_fault_lower_lookup(ffff80002895da10,ffff80002895da48,ffff80002895d990) at uvm_fault_lower_lookup+0x263 sys/uvm/uvm_fault.c:1183 uvm_fault_lower(ffff80002895da10,ffff80002895da48,ffff80002895d990,0) at uvm_fault_lower+0x5f sys/uvm/uvm_fault.c:1218 uvm_fault(fffffd807bad6330,1b2ef20000,0,1) at uvm_fault+0x21d upageflttrap(ffff80002895db80,1b2ef20000) at upageflttrap+0x79 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff80002895db80) at usertrap+0x198 sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7fffffb840, 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> ddb> set $lines = 0 ddb> set $maxwidth = 0 ddb> show panic *cpu0: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/main/kernel/sys/uvm/uvm_page.c", line 144 ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82570166) at panic+0x161 sys/kern/subr_prf.c:202 __assert(ffffffff825e477b,ffffffff825965f7,90,ffffffff8254a7a2) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_pagealloc_pg(fffffd80065d0e00,fffffd806660fa78,d977000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline] uvm_pagealloc_pg(fffffd80065d0e00,fffffd806660fa78,d977000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709 uvm_pagealloc(fffffd806660fa78,d977000,0,3) at uvm_pagealloc+0x1e8 sys/uvm/uvm_page.c:917 pmap_get_ptp(fffffd806660fa68,1b2ef21000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1183 pmap_enter(fffffd806660fa68,1b2ef21000,68375000,3,20) at pmap_enter+0x2a0 uvm_fault_lower_lookup(ffff80002895da10,ffff80002895da48,ffff80002895d990) at uvm_fault_lower_lookup+0x263 sys/uvm/uvm_fault.c:1183 uvm_fault_lower(ffff80002895da10,ffff80002895da48,ffff80002895d990,0) at uvm_fault_lower+0x5f sys/uvm/uvm_fault.c:1218 uvm_fault(fffffd807bad6330,1b2ef20000,0,1) at uvm_fault+0x21d upageflttrap(ffff80002895db80,1b2ef20000) at upageflttrap+0x79 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff80002895db80) at usertrap+0x198 sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7fffffb840, count: -13 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80002895d490 rbx 0 rdx 0 rcx 0 rax 0xffff8000230c1260 r8 0x101010101010101 r9 0x8080808080808080 r10 0xe9cb08229fc4c58d r11 0x6f9539f043b86ec4 r12 0 r13 0xd977000 __kernel_phys_end+0xad77000 r14 0 r15 0x1 rip 0xffffffff8178e6f8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff80002895d480 ss 0 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor.3) pid=397346 stat=onproc flags process=2 proc=0 pri=32, usrpri=83, nice=20 forw=0xffffffffffffffff, list=0xffff8000230c0540,0xffff80002169ad38 process=0xffff800024b06fd0 user=0xffff800028958000, vmspace=0xfffffd807bad6330 estcpu=36, cpticks=1, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 35734 519674 29715 0 2 0 syz-executor.6 35734 69326 29715 0 2 0x4000000 syz-executor.6 48441 165709 89019 0 2 0 syz-executor.1 48441 85642 89019 0 3 0x4000080 fsleep syz-executor.1 86697 373865 80541 0 3 0x82 nanoslp syz-executor.7 *74675 397346 80541 0 7 0x2 syz-executor.3 37581 152147 1 0 3 0x100083 ttyin getty 91803 240026 0 0 3 0x14200 acct acct 89019 382730 80541 0 2 0x482 syz-executor.1 29715 192179 80541 0 3 0x82 nanoslp syz-executor.6 45996 449119 80541 0 3 0x82 piperd syz-executor.4 117 283111 80541 0 2 0x482 syz-executor.5 12871 335013 80541 0 3 0x82 piperd syz-executor.2 38950 31380 80541 0 3 0x82 piperd syz-executor.0 76312 371484 0 0 3 0x14280 nfsidl nfsio 59215 25745 0 0 3 0x14280 nfsidl nfsio 60028 186117 0 0 3 0x14280 nfsidl nfsio 9550 13940 0 0 3 0x14280 nfsidl nfsio 57886 239159 0 0 3 0x14280 nfsidl nfsio 84279 206188 0 0 3 0x14280 nfsidl nfsio 97159 397092 0 0 3 0x14280 nfsidl nfsio 3311 383524 0 0 3 0x14280 nfsidl nfsio 66104 447263 0 0 3 0x14280 nfsidl nfsio 60776 383492 0 0 3 0x14280 nfsidl nfsio 64935 248701 0 0 3 0x14280 nfsidl nfsio 15494 231698 0 0 3 0x14280 nfsidl nfsio 13383 75769 0 0 3 0x14280 nfsidl nfsio 36536 491685 0 0 3 0x14280 nfsidl nfsio 34033 158217 0 0 3 0x14200 bored sosplice 87219 462300 0 0 3 0x14280 nfsidl nfsio 77796 258918 0 0 3 0x14280 nfsidl nfsio 75108 430112 0 0 3 0x14280 nfsidl nfsio 65164 312528 0 0 3 0x14280 nfsidl nfsio 76172 119816 0 0 3 0x14280 nfsidl nfsio 281 89958 0 0 3 0x14280 nfsidl nfsio 80541 451923 81651 0 3 0x82 thrsleep syz-fuzzer 80541 186166 81651 0 3 0x4000082 nanoslp syz-fuzzer 80541 167784 81651 0 3 0x4000082 thrsleep syz-fuzzer 80541 386828 81651 0 2 0x4000002 syz-fuzzer 80541 397408 81651 0 3 0x4000082 thrsleep syz-fuzzer 80541 320164 81651 0 3 0x4000082 thrsleep syz-fuzzer 80541 445637 81651 0 3 0x4000082 thrsleep syz-fuzzer 80541 436770 81651 0 3 0x4000082 thrsleep syz-fuzzer 80541 120166 81651 0 3 0x4000082 thrsleep syz-fuzzer 81651 259697 49716 0 3 0x10008a sigsusp ksh 49716 295549 47040 0 3 0x9a kqread sshd 47040 133411 1 0 3 0x88 kqread sshd 78116 357563 97104 73 3 0x1100090 kqread syslogd 97104 200658 1 0 3 0x100082 netio syslogd 36701 434901 1 0 3 0x100080 kqread resolvd 75490 270825 91538 77 3 0x100092 kqread dhcpleased 73386 11469 91538 77 3 0x100092 kqread dhcpleased 91538 252007 1 0 3 0x80 kqread dhcpleased 39188 455684 0 0 3 0x14200 bored smr 24566 27611 0 0 2 0x14200 zerothread 13184 343328 0 0 3 0x14200 aiodoned aiodoned 38874 173742 0 0 3 0x14200 syncer update 60109 375296 0 0 3 0x14200 cleaner cleaner 21035 503912 0 0 3 0x14200 reaper reaper 45441 23600 0 0 3 0x14200 pgdaemon pagedaemon 57370 204595 0 0 3 0x14200 bored viomb 64221 353981 0 0 3 0x40014200 acpi0 acpi0 88124 453114 0 0 3 0x14200 bored softnet 66254 96732 0 0 3 0x14200 bored softnet 61327 277671 0 0 3 0x14200 bored softnet 21753 108852 0 0 3 0x14200 bored softnet 51362 42072 0 0 3 0x14200 bored systqmp 27849 215839 0 0 3 0x14200 bored systq 2301 171292 0 0 3 0x40014200 bored softclock 90144 350090 0 0 3 0x40014200 idle0 1 287565 0 0 3 0x80082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb> show all locks No such command ddb> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10191 6426K 10585K 78643K 98163 0 pcb 13 14K 16K 78643K 2791 0 rtable 261 23K 23K 78643K 5909 0 ifaddr 99 28K 29K 78643K 2034 0 sysctl 3 1K 3K 78643K 14 0 counters 27 17K 17K 78643K 318 0 ioctlops 0 0K 4K 78643K 5881 0 iov 0 0K 32K 78643K 2739 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1519 95K 96K 78643K 25131 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 9K 78643K 233 0 VM map 2 0K 0K 78643K 2 0 sem 16 16K 16K 78643K 3401 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 12 41K 85K 78643K 21040 0 sigio 0 0K 0K 78643K 343 0 proc 62 59K 83K 78643K 4405 0 subproc 104 6K 6K 78643K 1534 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1021 0 in_multi 95 6K 6K 78643K 1768 0 ether_multi 1 0K 0K 78643K 73 0 mrt 1 0K 0K 78643K 512 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 181 811K 811K 78643K 181 0 exec 0 0K 2K 78643K 6551 0 pfkey data 0 0K 0K 78643K 49 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 7 26K 26K 78643K 7 0 UVM amap 559 1593K 1593K 78643K 116662 0 UVM aobj 131 8K 8K 78643K 146 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 707 0 NDP 14 0K 2K 78643K 579 0 temp 192 4854K 21238K 78643K 253362 0 kqueue 12 18K 26K 78643K 1447 0 SYN cache 2 16K 16K 78643K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 1656 0 1653 23 22 1 5 0 8 0 rtentry 112 1776 0 1674 5 2 3 4 0 8 0 unpcb 136 11317 0 11304 119 114 5 10 0 8 4 syncache 296 74 0 74 17 17 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 55 57 55 1 1 0 1 0 8 0 tcpcb 736 6111 0 6097 189 181 8 14 0 8 5 arp 88 258 0 240 1 0 1 1 0 8 0 ipq 40 14 0 14 5 4 1 1 0 8 1 ipqe 40 22 0 22 5 4 1 1 0 8 1 inpcb 312 17619 0 17608 221 214 7 11 0 8 5 ip6q 72 17 0 16 8 7 1 1 0 8 0 ip6af 40 33 0 33 7 7 0 1 0 8 0 nd6 48 419 0 395 1 0 1 1 0 8 0 pkpcb 40 55 0 55 15 15 0 1 0 8 0 kcovpl 48 118 0 110 1 0 1 1 0 8 0 ppxss 1152 54 0 54 16 16 0 1 0 8 0 pfstscr 40 33 0 23 2 1 1 1 0 8 0 pfosfp 40 6 0 4 1 0 1 1 0 8 0 pfosfpen 112 6 0 3 1 0 1 1 0 8 0 pfrktable 1344 194 0 179 5 3 2 2 0 8 0 pftag 88 83 0 73 1 0 1 1 0 8 0 pfqueue 264 10 0 10 3 3 0 1 0 8 0 pfstitem 24 20 0 6 1 0 1 1 0 8 0 pfstkey 112 54 0 52 3 2 1 1 0 8 0 pfstate 336 27 0 20 3 2 1 1 0 8 0 pfrule 1360 469 0 386 9 2 7 8 0 8 0 rttmr 64 194 0 194 13 13 0 1 0 8 0 art_heap8 4096 3 0 2 3 2 1 2 0 8 0 art_heap4 256 11865 0 11405 95 66 29 31 0 8 0 art_table 32 11868 0 11407 9 5 4 4 0 8 0 art_node 16 1772 0 1682 1 0 1 1 0 8 0 sysvmsgpl 40 11 0 5 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 3397 0 3383 1 0 1 1 0 8 0 shmpl 112 143 0 15 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 29638 0 28030 101 0 101 101 0 8 0 ffsino 240 29638 0 28030 95 0 95 95 0 8 0 nchpl 144 60895 0 59264 63 0 63 63 0 8 0 uvmvnodes 80 6242 0 0 128 0 128 128 0 8 0 vnodes 224 6242 0 0 368 0 368 368 0 8 0 namei 1024 241525 0 241525 15 14 1 2 0 8 1 vcpupl 1984 361 0 1 46 0 46 46 0 8 0 vmpool 528 420 0 60 27 3 24 25 0 8 0 pfiaddrpl 120 92 0 51 3 1 2 2 0 8 0 kstatmem 264 606 0 582 2 0 2 2 0 8 0 scsiplug 72 12 0 12 4 4 0 1 0 8 0 scxspl 216 176577 0 176577 41 40 1 8 0 8 1 plimitpl 152 3045 0 3031 1 0 1 1 0 8 0 sigapl 424 21140 0 21076 8 0 8 8 0 8 0 futexpl 64 226248 0 226247 9 8 1 1 0 8 0 knotepl 120 285684 0 285604 122 117 5 15 0 8 0 kqueuepl 184 4918 0 4910 74 73 1 7 0 8 0 pipepl 304 4304 0 4276 104 101 3 8 0 8 0 fdescpl 432 21086 0 21063 5 1 4 4 0 8 0 filepl 120 159704 0 159470 198 184 14 20 0 8 6 lockfpl 104 7034 0 7032 13 12 1 3 0 8 0 lockfspl 48 1774 0 1772 1 0 1 1 0 8 0 sessionpl 144 136 0 120 1 0 1 1 0 8 0 pgrppl 48 291 0 275 1 0 1 1 0 8 0 ucredpl 96 23096 0 23086 1 0 1 1 0 8 0 zombiepl 144 21079 0 21076 4 3 1 1 0 8 0 processpl 1000 21140 0 21076 12 3 9 9 0 8 0 procpl 672 52633 0 52559 40 32 8 9 0 8 0 sosppl 168 197 0 197 33 32 1 1 0 8 1 sockpl 448 30806 0 30774 537 524 13 33 0 8 8 mcl64k 65536 780 0 780 47 46 1 1 0 8 1 mcl16k 16384 248 0 248 42 41 1 1 0 8 1 mcl12k 12288 583 0 583 47 46 1 1 0 8 1 mcl9k 9216 271 0 271 45 44 1 1 0 8 1 mcl8k 8192 1429 0 1429 39 38 1 1 0 8 1 mcl4k 4096 2514 0 2514 25 24 1 1 0 8 1 mcl2k2 2112 165 0 165 52 51 1 1 0 8 1 mcl2k 2048 109863 0 109697 100 78 22 25 0 8 0 mtagpl 96 20218 0 18750 108 70 38 39 0 8 0 mbufpl 256 339038 0 337365 1118 1006 112 476 0 8 3 bufpl 288 40277 0 33986 458 0 458 458 0 8 0 anonpl 24 4166582 0 4150357 333 217 116 159 0 188 0 amapchunkpl 152 362954 0 362368 165 133 32 41 0 158 0 amappl16 200 55880 0 55183 224 186 38 60 0 8 0 amappl15 192 4165 0 4162 2 1 1 1 0 8 0 amappl14 184 1493 0 1488 1 0 1 1 0 8 0 amappl13 176 2764 0 2762 1 0 1 1 0 8 0 amappl12 168 1690 0 1688 1 0 1 1 0 8 0 amappl11 160 3823 0 3806 1 0 1 1 0 8 0 amappl10 152 2096 0 2090 1 0 1 1 0 8 0 amappl9 144 3872 0 3868 1 0 1 1 0 8 0 amappl8 136 5065 0 4954 4 0 4 4 0 8 0 amappl7 128 2897 0 2886 1 0 1 1 0 8 0 amappl6 120 4336 0 4309 2 1 1 2 0 8 0 amappl5 112 17793 0 17776 1 0 1 1 0 8 0 amappl4 104 8890 0 8858 2 0 2 2 0 8 0 amappl3 96 64091 0 64047 2 0 2 2 0 8 0 amappl2 88 25447 0 25374 3 1 2 3 0 8 0 amappl1 80 572574 0 572000 36 20 16 19 0 8 0 amappl 88 113979 0 113733 8 1 7 7 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 72 145 0 15 3 0 3 3 0 8 0 uaddrrnd 24 21506 0 21123 3 0 3 3 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 21506 0 21123 3 0 3 3 0 8 0 vmmpekpl 168 137320 0 137235 5 0 5 5 0 8 0 vmmpepl 168 2446905 0 2443592 510 330 180 201 0 357 5 vmsppl 272 21505 0 21123 28 2 26 26 0 8 0 rwobjpl 24 574177 0 566005 56 5 51 52 0 8 0 pdppl 4096 43018 0 42606 1597 1180 417 424 0 8 5 pvpl 32 8122794 0 8102910 609 414 195 256 0 265 0 pmappl 216 21505 0 21123 23 1 22 22 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 4728 0 3422 56 18 38 46 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82570166) at panic+0x161 sys/kern/subr_prf.c:202 __assert(ffffffff825e477b,ffffffff825965f7,90,ffffffff8254a7a2) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_pagealloc_pg(fffffd80065d0e00,fffffd806660fa78,d977000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline] uvm_pagealloc_pg(fffffd80065d0e00,fffffd806660fa78,d977000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709 uvm_pagealloc(fffffd806660fa78,d977000,0,3) at uvm_pagealloc+0x1e8 sys/uvm/uvm_page.c:917 pmap_get_ptp(fffffd806660fa68,1b2ef21000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1183 pmap_enter(fffffd806660fa68,1b2ef21000,68375000,3,20) at pmap_enter+0x2a0 uvm_fault_lower_lookup(ffff80002895da10,ffff80002895da48,ffff80002895d990) at uvm_fault_lower_lookup+0x263 sys/uvm/uvm_fault.c:1183 uvm_fault_lower(ffff80002895da10,ffff80002895da48,ffff80002895d990,0) at uvm_fault_lower+0x5f sys/uvm/uvm_fault.c:1218 uvm_fault(fffffd807bad6330,1b2ef20000,0,1) at uvm_fault+0x21d upageflttrap(ffff80002895db80,1b2ef20000) at upageflttrap+0x79 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff80002895db80) at usertrap+0x198 sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7fffffb840, count: -13 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82570166) at panic+0x161 sys/kern/subr_prf.c:202 __assert(ffffffff825e477b,ffffffff825965f7,90,ffffffff8254a7a2) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_pagealloc_pg(fffffd80065d0e00,fffffd806660fa78,d977000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline] uvm_pagealloc_pg(fffffd80065d0e00,fffffd806660fa78,d977000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709 uvm_pagealloc(fffffd806660fa78,d977000,0,3) at uvm_pagealloc+0x1e8 sys/uvm/uvm_page.c:917 pmap_get_ptp(fffffd806660fa68,1b2ef21000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1183 pmap_enter(fffffd806660fa68,1b2ef21000,68375000,3,20) at pmap_enter+0x2a0 uvm_fault_lower_lookup(ffff80002895da10,ffff80002895da48,ffff80002895d990) at uvm_fault_lower_lookup+0x263 sys/uvm/uvm_fault.c:1183 uvm_fault_lower(ffff80002895da10,ffff80002895da48,ffff80002895d990,0) at uvm_fault_lower+0x5f sys/uvm/uvm_fault.c:1218 uvm_fault(fffffd807bad6330,1b2ef20000,0,1) at uvm_fault+0x21d upageflttrap(ffff80002895db80,1b2ef20000) at upageflttrap+0x79 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff80002895db80) at usertrap+0x198 sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7fffffb840, count: -13