panic: kernel diagnostic assertion "dupe == NULL" failed: file "/syzkaller/managers/main/kernel/sys/uvm/uvm_page.c", line 144 Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 80468 41518 0 0 0 0 syz-executor.1 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827875bd) at panic+0x165 sys/kern/subr_prf.c:198 __assert(ffffffff82801481,ffffffff827b0ace,90,ffffffff8275fad6) at __assert+0x29 sys/kern/subr_prf.c:157 uvm_pagealloc_pg(fffffd8006a78700,fffffd806b3cc018,3e698bf000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline] uvm_pagealloc_pg(fffffd8006a78700,fffffd806b3cc018,3e698bf000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709 uvm_pagealloc(fffffd806b3cc018,3e698bf000,0,3) at uvm_pagealloc+0x1ec sys/uvm/uvm_page.c:917 pmap_get_ptp(fffffd806b3cc008,7cd317fe7000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1209 pmap_enter(fffffd806b3cc008,7cd317fe7000,6804a000,1,20) at pmap_enter+0x29d sys/arch/amd64/amd64/pmap.c:2716 uvm_fault_upper_lookup(ffff80002ba0c480,ffff80002ba0c4b8,ffff80002ba0c380,ffff80002ba0c400) at uvm_fault_upper_lookup+0x2a1 sys/uvm/uvm_fault.c:895 uvm_fault(fffffd806cb64a28,7cd317fe8000,0,1) at uvm_fault+0x109 sys/uvm/uvm_fault.c:605 upageflttrap(ffff80002ba0c600,7cd317fe8a20) at upageflttrap+0x80 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002ba0c600) at usertrap+0x20d sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7cd317fe8a50, count: 3 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+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827875bd) at panic+0x165 sys/kern/subr_prf.c:198 __assert(ffffffff82801481,ffffffff827b0ace,90,ffffffff8275fad6) at __assert+0x29 sys/kern/subr_prf.c:157 uvm_pagealloc_pg(fffffd8006a78700,fffffd806b3cc018,3e698bf000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline] uvm_pagealloc_pg(fffffd8006a78700,fffffd806b3cc018,3e698bf000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709 uvm_pagealloc(fffffd806b3cc018,3e698bf000,0,3) at uvm_pagealloc+0x1ec sys/uvm/uvm_page.c:917 pmap_get_ptp(fffffd806b3cc008,7cd317fe7000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1209 pmap_enter(fffffd806b3cc008,7cd317fe7000,6804a000,1,20) at pmap_enter+0x29d sys/arch/amd64/amd64/pmap.c:2716 uvm_fault_upper_lookup(ffff80002ba0c480,ffff80002ba0c4b8,ffff80002ba0c380,ffff80002ba0c400) at uvm_fault_upper_lookup+0x2a1 sys/uvm/uvm_fault.c:895 uvm_fault(fffffd806cb64a28,7cd317fe8000,0,1) at uvm_fault+0x109 sys/uvm/uvm_fault.c:605 upageflttrap(ffff80002ba0c600,7cd317fe8a20) at upageflttrap+0x80 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002ba0c600) at usertrap+0x20d sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7cd317fe8a50, count: -12 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80002ba0bf90 rbx 0 rdx 0 rcx 0 rax 0xffff8000299d0aa0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x680335a9788762f7 r11 0x223382c6ba0a995d r12 0 r13 0x3e698bf000 r14 0 r15 0x1 rip 0xffffffff824aca5c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002ba0bf80 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb> show proc PROC (syz-executor.1) tid=80468 pid=41518 tcnt=2 stat=onproc flags process=0 proc=0 runpri=81, usrpri=81, slppri=16, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff8000299cf560,0xffff8000299cf818 process=0xffff8000ffff0bd0 user=0xffff80002ba07000, vmspace=0xfffffd806cb64a28 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 76250 239338 55012 0 2 0 syz-executor.2 76250 60534 55012 0 3 0x4000080 fsleep syz-executor.2 25342 11083 53677 0 2 0 syz-executor.0 25342 173496 53677 0 3 0x4000080 fsleep syz-executor.0 23326 211534 71742 0 2 0 syz-executor.4 23326 433664 71742 0 3 0x4000080 fsleep syz-executor.4 23326 6095 71742 0 3 0x4000080 fsleep syz-executor.4 52999 63057 14578 0 2 0 syz-executor.6 52999 219791 14578 0 2 0x4000000 syz-executor.6 374 120462 12348 0 2 0 syz-executor.7 374 368360 12348 0 3 0x4000080 fsleep syz-executor.7 21691 33913 54114 0 2 0 syz-executor.5 21691 44706 54114 0 3 0x4000080 fsleep syz-executor.5 *41518 80468 95986 0 7 0 syz-executor.1 41518 31948 95986 0 3 0x4000080 fsleep syz-executor.1 12348 397590 56437 0 3 0x82 nanoslp syz-executor.7 55012 227384 56437 0 3 0x82 nanoslp syz-executor.2 3466 58588 56437 0 2 0x2 syz-executor.3 91399 510825 0 0 3 0x14200 bored sosplice 83120 186376 0 0 3 0x14280 nfsidl nfsio 45495 72033 0 0 3 0x14280 nfsidl nfsio 81716 275515 0 0 3 0x14280 nfsidl nfsio 9402 103262 0 0 3 0x14280 nfsidl nfsio 35671 61017 0 0 3 0x14280 nfsidl nfsio 49780 319249 0 0 3 0x14280 nfsidl nfsio 4539 342193 0 0 3 0x14280 nfsidl nfsio 39661 414651 0 0 3 0x14280 nfsidl nfsio 85822 234816 0 0 3 0x14280 nfsidl nfsio 7824 214863 0 0 3 0x14280 nfsidl nfsio 50003 35656 0 0 3 0x14280 nfsidl nfsio 74551 445076 0 0 3 0x14280 nfsidl nfsio 69656 233894 0 0 3 0x14280 nfsidl nfsio 53120 465879 0 0 3 0x14280 nfsidl nfsio 69801 150404 0 0 3 0x14280 nfsidl nfsio 14763 512865 0 0 3 0x14280 nfsidl nfsio 49820 225949 0 0 3 0x14280 nfsidl nfsio 54877 126620 0 0 3 0x14280 nfsidl nfsio 48959 215791 0 0 3 0x14280 nfsidl nfsio 88340 237052 0 0 3 0x14280 nfsidl nfsio 35557 195177 0 0 3 0x14200 acct acct 14578 299801 56437 0 3 0x82 nanoslp syz-executor.6 71742 3106 56437 0 3 0x82 nanoslp syz-executor.4 54114 107599 56437 0 3 0x82 nanoslp syz-executor.5 53677 48010 56437 0 3 0x82 nanoslp syz-executor.0 95986 420654 56437 0 3 0x82 nanoslp syz-executor.1 56437 199662 92721 0 3 0x2000082 thrsleep syz-fuzzer 56437 444419 92721 0 3 0x6000082 thrsleep syz-fuzzer 56437 454660 92721 0 3 0x6000082 thrsleep syz-fuzzer 56437 502001 92721 0 3 0x6000082 wait syz-fuzzer 56437 494021 92721 0 3 0x6000082 wait syz-fuzzer 56437 448675 92721 0 3 0x6000082 wait syz-fuzzer 56437 132156 92721 0 3 0x6000082 wait syz-fuzzer 56437 26781 92721 0 3 0x6000082 wait syz-fuzzer 56437 265176 92721 0 3 0x6000082 wait syz-fuzzer 56437 203573 92721 0 3 0x6000082 thrsleep syz-fuzzer 56437 73208 92721 0 3 0x6000082 thrsleep syz-fuzzer 56437 158131 92721 0 3 0x6000082 wait syz-fuzzer 56437 488718 92721 0 3 0x6000082 wait syz-fuzzer 56437 137326 92721 0 3 0x6000082 kqread syz-fuzzer 92721 44877 21272 0 3 0x10008a sigsusp ksh 21272 238691 90209 0 3 0x9a kqread sshd 78187 222573 1 0 3 0x100083 ttyopn getty 90209 368929 1 0 3 0x88 kqread sshd 97578 323432 50717 73 3 0x1100090 kqread syslogd 50717 190509 1 0 3 0x100082 netio syslogd 94174 173179 1 0 3 0x100080 kqread resolvd 58651 286741 42020 77 3 0x100092 kqread dhcpleased 78637 474482 42020 77 3 0x100092 kqread dhcpleased 42020 263744 1 0 3 0x80 kqread dhcpleased 77638 139218 0 0 3 0x14200 bored smr 75849 93240 0 0 2 0x14200 zerothread 22511 234713 0 0 3 0x14200 aiodoned aiodoned 75786 154276 0 0 3 0x14200 syncer update 29769 1604 0 0 3 0x14200 cleaner cleaner 96491 94661 0 0 3 0x14200 reaper reaper 52098 37068 0 0 3 0x14200 pgdaemon pagedaemon 61089 142721 0 0 3 0x14200 bored viomb 39594 58376 0 0 3 0x40014200 acpi0 acpi0 37666 19834 0 0 3 0x14200 bored softnet3 51626 379077 0 0 3 0x14200 bored softnet2 4414 22379 0 0 3 0x14200 bored softnet1 36671 478696 0 0 3 0x14200 bored softnet0 51723 430112 0 0 3 0x14200 bored systqmp 944 24487 0 0 3 0x14200 bored systq 55509 522695 0 0 3 0x40014200 tmoslp softclock 17212 221808 0 0 3 0x40014200 idle0 1 197922 0 0 3 0x82 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 10182 6467K 7046K 78643K 15195 0 pcb 13 10K 12K 78643K 252 0 rtable 237 7K 7K 78643K 502 0 pf 32 9K 9K 78643K 70 0 ifaddr 44 11K 11K 78643K 76 0 ifgroup 55 2K 2K 78643K 121 0 sysctl 3 0K 1K 78643K 7 0 counters 29 17K 17K 78643K 45 0 ioctlops 0 0K 2K 78643K 2071 0 iov 0 0K 16K 78643K 329 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1373 86K 86K 78643K 2466 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 32 0 VM map 2 1K 1K 78643K 2 0 sem 12 1K 1K 78643K 103 0 dirhash 12 2K 2K 78643K 15 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 17 61K 65K 78643K 6239 0 sigio 0 0K 0K 78643K 31 0 proc 58 59K 75K 78643K 672 0 subproc 104 6K 6K 78643K 156 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 239 0 in_multi 99 7K 7K 78643K 192 0 ether_multi 1 0K 0K 78643K 8 0 mrt 1 0K 0K 78643K 3 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 79 360K 360K 78643K 79 0 exec 0 0K 1K 78643K 764 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 8 62K 64K 78643K 10 0 UVM amap 380 142K 144K 78643K 57657 0 UVM aobj 131 4K 4K 78643K 132 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 63 0 NDP 12 0K 2K 78643K 52 0 temp 74 5912K 5977K 78643K 40122 0 kqueue 12 18K 24K 78643K 159 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 75 0 72 1 0 1 1 0 8 0 rtentry 112 156 0 46 4 0 4 4 0 8 0 unpcb 144 2358 0 2345 24 23 1 6 0 8 0 syncache 304 30 0 30 4 4 0 1 0 8 0 sackhl 24 1 0 1 1 1 0 1 0 8 0 tcpqe 32 252 0 252 4 4 0 1 0 8 0 tcpcb 808 418 0 406 14 12 2 9 0 8 0 arp 88 26 0 8 1 0 1 1 0 8 0 ipq 40 51 0 41 1 0 1 1 0 8 0 ipqe 40 2045 0 2033 1 0 1 1 0 8 0 inpcb 336 1320 0 1303 29 22 7 9 0 8 5 nd6 104 37 0 13 1 0 1 1 0 8 0 pkpcb 40 1 0 1 1 1 0 1 0 8 0 kcovpl 48 12 0 4 1 0 1 1 0 8 0 ppxss 1160 2 0 2 2 2 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 641 0 186 29 0 29 29 0 8 0 art_table 32 642 0 186 4 0 4 4 0 8 0 art_node 16 155 0 55 1 0 1 1 0 8 0 sysvmsgpl 40 21 0 16 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 92 0 82 1 0 1 1 0 8 0 shmpl 112 129 0 1 4 0 4 4 0 8 0 dirhash 1024 19 0 2 3 0 3 3 0 8 0 dino2pl 256 8171 0 6725 91 0 91 91 0 8 0 ffsino 240 8171 0 6725 86 0 86 86 0 8 0 nchpl 144 15431 0 13789 63 0 63 63 0 8 0 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 40635 0 40635 3 2 1 2 0 8 1 vcpupl 2048 9 0 1 2 0 2 2 0 8 0 vmpool 664 9 0 1 1 0 1 1 0 8 0 kstatmem 264 56 0 32 2 0 2 2 0 8 0 scxspl 216 44949 0 44949 12 11 1 8 1 8 1 plimitpl 152 177 0 162 1 0 1 1 0 8 0 sigapl 424 6551 0 6485 8 0 8 8 0 8 0 futexpl 64 34280 0 34273 1 0 1 1 0 8 0 knotepl 120 52675 0 52595 10 7 3 10 0 8 0 kqueuepl 184 382 0 374 8 7 1 4 0 8 0 pipepl 288 984 0 956 11 6 5 7 0 8 2 fdescpl 432 6513 0 6485 4 0 4 4 0 8 0 filepl 120 20864 0 20625 30 20 10 14 0 8 2 lockfpl 104 979 0 976 1 0 1 1 0 8 0 lockfspl 48 461 0 458 1 0 1 1 0 8 0 sessionpl 144 27 0 11 1 0 1 1 0 8 0 pgrppl 48 405 0 389 1 0 1 1 0 8 0 ucredpl 104 2178 0 2168 1 0 1 1 0 8 0 zombiepl 144 6485 0 6485 1 0 1 1 0 8 1 processpl 1008 6551 0 6485 10 1 9 9 0 8 0 procpl 680 14675 0 14588 10 1 9 9 0 8 1 sosppl 168 39 0 39 2 2 0 1 0 8 0 sockpl 456 3755 0 3722 117 104 13 32 0 8 8 mcl64k 65536 148 0 148 6 5 1 1 0 8 1 mcl16k 16384 58 0 58 9 8 1 1 0 8 1 mcl12k 12288 210 0 210 7 6 1 1 0 8 1 mcl9k 9216 152 0 152 9 8 1 1 0 8 1 mcl8k 8192 474 0 474 4 3 1 1 0 8 1 mcl4k 4096 456 0 456 4 3 1 1 0 8 1 mcl2k2 2112 32 0 32 6 5 1 1 0 8 1 mcl2k 2048 76094 0 76037 39 29 10 30 0 8 1 mtagpl 96 302 0 196 6 2 4 5 0 8 0 mbufpl 256 171162 0 170952 216 195 21 81 0 8 0 bufpl 288 10961 0 4564 458 0 458 458 0 8 0 anonpl 24 646682 0 632600 112 18 94 97 0 188 0 amapchunkpl 152 182045 0 181127 56 19 37 38 0 158 1 amappl16 200 12980 0 12495 43 17 26 30 0 8 0 amappl15 192 25 0 24 1 0 1 1 0 8 0 amappl14 184 159 0 148 2 1 1 2 0 8 0 amappl13 176 22 0 20 1 0 1 1 0 8 0 amappl12 168 7193 0 7162 2 0 2 2 0 8 0 amappl11 160 57 0 47 1 0 1 1 0 8 0 amappl10 152 36 0 26 1 0 1 1 0 8 0 amappl9 144 164 0 163 2 1 1 1 0 8 0 amappl8 136 338 0 250 4 0 4 4 0 8 0 amappl7 128 199 0 179 2 0 2 2 0 8 0 amappl6 120 305 0 297 1 0 1 1 0 8 0 amappl5 112 212 0 204 1 0 1 1 0 8 0 amappl4 104 461 0 437 2 1 1 2 0 8 0 amappl3 96 36664 0 36573 3 0 3 3 0 8 0 amappl2 88 7067 0 6994 3 1 2 3 0 8 0 amappl1 80 30880 0 30366 21 10 11 21 0 8 0 amappl 88 57044 0 56811 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 72 131 0 1 3 0 3 3 0 8 0 uaddrrnd 24 6522 0 6486 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 6522 0 6486 1 0 1 1 0 8 0 vmmpekpl 168 44405 0 44353 3 0 3 3 0 8 0 vmmpepl 168 379481 0 377099 155 48 107 115 0 357 3 vmsppl 368 6521 0 6486 4 0 4 4 0 8 0 rwobjpl 24 94567 0 86979 46 0 46 46 0 8 0 pdppl 4096 13050 0 12980 223 151 72 73 0 8 2 pvpl 32 1733931 0 1714595 342 174 168 285 0 265 0 pmappl 216 6521 0 6486 3 0 3 3 0 8 1 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1245 0 439 24 0 24 24 0 8 0 ddb> machine ddbcpu 0 No such command ddb> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827875bd) at panic+0x165 sys/kern/subr_prf.c:198 __assert(ffffffff82801481,ffffffff827b0ace,90,ffffffff8275fad6) at __assert+0x29 sys/kern/subr_prf.c:157 uvm_pagealloc_pg(fffffd8006a78700,fffffd806b3cc018,3e698bf000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline] uvm_pagealloc_pg(fffffd8006a78700,fffffd806b3cc018,3e698bf000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709 uvm_pagealloc(fffffd806b3cc018,3e698bf000,0,3) at uvm_pagealloc+0x1ec sys/uvm/uvm_page.c:917 pmap_get_ptp(fffffd806b3cc008,7cd317fe7000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1209 pmap_enter(fffffd806b3cc008,7cd317fe7000,6804a000,1,20) at pmap_enter+0x29d sys/arch/amd64/amd64/pmap.c:2716 uvm_fault_upper_lookup(ffff80002ba0c480,ffff80002ba0c4b8,ffff80002ba0c380,ffff80002ba0c400) at uvm_fault_upper_lookup+0x2a1 sys/uvm/uvm_fault.c:895 uvm_fault(fffffd806cb64a28,7cd317fe8000,0,1) at uvm_fault+0x109 sys/uvm/uvm_fault.c:605 upageflttrap(ffff80002ba0c600,7cd317fe8a20) at upageflttrap+0x80 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002ba0c600) at usertrap+0x20d sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7cd317fe8a50, count: -12 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff827875bd) at panic+0x165 sys/kern/subr_prf.c:198 __assert(ffffffff82801481,ffffffff827b0ace,90,ffffffff8275fad6) at __assert+0x29 sys/kern/subr_prf.c:157 uvm_pagealloc_pg(fffffd8006a78700,fffffd806b3cc018,3e698bf000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline] uvm_pagealloc_pg(fffffd8006a78700,fffffd806b3cc018,3e698bf000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709 uvm_pagealloc(fffffd806b3cc018,3e698bf000,0,3) at uvm_pagealloc+0x1ec sys/uvm/uvm_page.c:917 pmap_get_ptp(fffffd806b3cc008,7cd317fe7000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1209 pmap_enter(fffffd806b3cc008,7cd317fe7000,6804a000,1,20) at pmap_enter+0x29d sys/arch/amd64/amd64/pmap.c:2716 uvm_fault_upper_lookup(ffff80002ba0c480,ffff80002ba0c4b8,ffff80002ba0c380,ffff80002ba0c400) at uvm_fault_upper_lookup+0x2a1 sys/uvm/uvm_fault.c:895 uvm_fault(fffffd806cb64a28,7cd317fe8000,0,1) at uvm_fault+0x109 sys/uvm/uvm_fault.c:605 upageflttrap(ffff80002ba0c600,7cd317fe8a20) at upageflttrap+0x80 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002ba0c600) at usertrap+0x20d sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7cd317fe8a50, count: -12