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 *242955 38964 0 0 0 0 syz-executor.3 db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff82547535) at panic+0x161 sys/kern/subr_prf.c:202 __assert(ffffffff825bcce5,ffffffff82570c58,90,ffffffff82525102) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_pagealloc_pg(fffffd8006955b80,fffffd806a920a38,d985000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline] uvm_pagealloc_pg(fffffd8006955b80,fffffd806a920a38,d985000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:710 uvm_pagealloc(fffffd806a920a38,d985000,0,3) at uvm_pagealloc+0x1e8 sys/uvm/uvm_page.c:918 pmap_get_ptp(fffffd806a920a28,1b30b21000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1183 pmap_enter(fffffd806a920a28,1b30b21000,71ccd000,3,20) at pmap_enter+0x2a0 uvm_fault_lower_lookup(ffff8000299951e0,ffff800029995218,ffff800029995160) at uvm_fault_lower_lookup+0x263 sys/uvm/uvm_fault.c:1183 uvm_fault_lower(ffff8000299951e0,ffff800029995218,ffff800029995160,0) at uvm_fault_lower+0x5f sys/uvm/uvm_fault.c:1218 uvm_fault(fffffd807cca6118,1b30b20000,0,2) at uvm_fault+0x21d upageflttrap(ffff800029995350,1b30b2003c) at upageflttrap+0x79 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff800029995350) at usertrap+0x198 sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffc4e50, 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:440 panic(ffffffff82547535) at panic+0x161 sys/kern/subr_prf.c:202 __assert(ffffffff825bcce5,ffffffff82570c58,90,ffffffff82525102) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_pagealloc_pg(fffffd8006955b80,fffffd806a920a38,d985000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline] uvm_pagealloc_pg(fffffd8006955b80,fffffd806a920a38,d985000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:710 uvm_pagealloc(fffffd806a920a38,d985000,0,3) at uvm_pagealloc+0x1e8 sys/uvm/uvm_page.c:918 pmap_get_ptp(fffffd806a920a28,1b30b21000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1183 pmap_enter(fffffd806a920a28,1b30b21000,71ccd000,3,20) at pmap_enter+0x2a0 uvm_fault_lower_lookup(ffff8000299951e0,ffff800029995218,ffff800029995160) at uvm_fault_lower_lookup+0x263 sys/uvm/uvm_fault.c:1183 uvm_fault_lower(ffff8000299951e0,ffff800029995218,ffff800029995160,0) at uvm_fault_lower+0x5f sys/uvm/uvm_fault.c:1218 uvm_fault(fffffd807cca6118,1b30b20000,0,2) at uvm_fault+0x21d upageflttrap(ffff800029995350,1b30b2003c) at upageflttrap+0x79 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff800029995350) at usertrap+0x198 sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffc4e50, count: -13 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff800029994c60 rbx 0 rdx 0 rcx 0 rax 0xffff80002370e000 r8 0x101010101010101 r9 0x8080808080808080 r10 0xe453eca1c5b6549c r11 0xeb980462c69a4296 r12 0 r13 0xd985000 __kernel_phys_end+0xad85000 r14 0 r15 0x1 rip 0xffffffff824289a8 db_enter+0x18 cs 0x8 rflags 0x246 rsp 0xffff800029994c50 ss 0 db_enter+0x18: addq $0x8,%rsp ddb> show proc PROC (syz-executor.3) pid=242955 stat=onproc flags process=0 proc=0 pri=84, usrpri=84, nice=20 forw=0xffffffffffffffff, list=0xffff80002370e2a0,0xffff80002370ea90 process=0xffff800027f26028 user=0xffff800029990000, vmspace=0xfffffd807cca6118 estcpu=34, cpticks=2, pctcpu=0.0 user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 26115 123965 87263 0 2 0 syz-executor.1 26115 440372 87263 0 3 0x4000080 fsleep syz-executor.1 26115 203141 87263 0 3 0x4000080 fsleep syz-executor.1 93504 309132 34271 0 2 0 syz-executor.5 93504 204653 34271 0 3 0x4000080 fsleep syz-executor.5 37469 454054 81793 0 2 0 syz-executor.6 37469 293196 81793 0 3 0x4000080 fsleep syz-executor.6 78183 263208 60845 0 2 0 syz-executor.2 78183 253194 60845 0 3 0x4000080 fsleep syz-executor.2 64554 351918 78581 0 2 0 syz-executor.0 64554 287280 78581 0 3 0x4000080 fsleep syz-executor.0 *38964 242955 92367 0 7 0 syz-executor.3 38964 19671 92367 0 3 0x4000080 fsleep syz-executor.3 75633 440865 6500 0 2 0 syz-executor.7 75633 152037 6500 0 3 0x4000080 fsleep syz-executor.7 82818 76252 0 0 3 0x14280 nfsidl nfsio 64704 517782 0 0 3 0x14280 nfsidl nfsio 58935 137014 0 0 3 0x14280 nfsidl nfsio 240 327004 0 0 3 0x14280 nfsidl nfsio 48263 517873 0 0 3 0x14280 nfsidl nfsio 43774 360788 0 0 3 0x14280 nfsidl nfsio 39851 493873 0 0 3 0x14280 nfsidl nfsio 28462 401483 0 0 3 0x14280 nfsidl nfsio 24970 69524 0 0 3 0x14280 nfsidl nfsio 42665 326014 0 0 3 0x14280 nfsidl nfsio 68370 426019 0 0 3 0x14280 nfsidl nfsio 72762 194950 0 0 3 0x14280 nfsidl nfsio 87008 213143 0 0 3 0x14280 nfsidl nfsio 62467 517883 0 0 3 0x14280 nfsidl nfsio 99615 68925 0 0 3 0x14280 nfsidl nfsio 1409 258251 0 0 3 0x14280 nfsidl nfsio 84242 403228 0 0 3 0x14280 nfsidl nfsio 32204 259001 0 0 3 0x14280 nfsidl nfsio 81729 465851 0 0 3 0x14280 nfsidl nfsio 98714 64936 0 0 3 0x14280 nfsidl nfsio 60845 264622 79284 0 3 0x82 nanoslp syz-executor.2 81793 485127 79284 0 3 0x82 nanoslp syz-executor.6 92367 21362 79284 0 3 0x82 nanoslp syz-executor.3 90991 490125 0 0 3 0x14200 bored sosplice 34271 523387 79284 0 3 0x82 nanoslp syz-executor.5 52314 516756 79284 0 3 0x82 nanoslp syz-executor.4 6500 303481 79284 0 3 0x82 nanoslp syz-executor.7 87263 75795 79284 0 3 0x82 nanoslp syz-executor.1 78581 391443 79284 0 3 0x82 nanoslp syz-executor.0 79284 189491 54617 0 3 0x82 thrsleep syz-fuzzer 79284 222052 54617 0 3 0x4000082 thrsleep syz-fuzzer 79284 134463 54617 0 3 0x4000082 thrsleep syz-fuzzer 79284 22238 54617 0 3 0x4000082 thrsleep syz-fuzzer 79284 441297 54617 0 3 0x4000082 thrsleep syz-fuzzer 79284 253324 54617 0 3 0x4000082 kqread syz-fuzzer 79284 206067 54617 0 3 0x4000082 thrsleep syz-fuzzer 79284 151796 54617 0 3 0x4000082 thrsleep syz-fuzzer 54617 353141 21150 0 3 0x10008a sigsusp ksh 21150 459122 4913 0 3 0x9a kqread sshd 11966 242767 1 0 3 0x100083 ttyin getty 4913 413145 1 0 3 0x88 kqread sshd 41124 517819 93815 73 3 0x1100090 kqread syslogd 93815 182362 1 0 3 0x100082 netio syslogd 96794 42692 1 0 3 0x100080 kqread resolvd 76784 497532 61886 77 3 0x100092 kqread dhcpleased 52370 87538 61886 77 3 0x100092 kqread dhcpleased 61886 232350 1 0 3 0x80 kqread dhcpleased 24814 184420 0 0 3 0x14200 bored smr 54738 204216 0 0 2 0x14200 zerothread 39010 227816 0 0 3 0x14200 aiodoned aiodoned 150 303118 0 0 3 0x14200 syncer update 57834 516458 0 0 3 0x14200 cleaner cleaner 67033 53614 0 0 3 0x14200 reaper reaper 47197 405992 0 0 3 0x14200 pgdaemon pagedaemon 24673 273385 0 0 3 0x14200 bored viomb 17216 262406 0 0 3 0x40014200 acpi0 acpi0 7178 485364 0 0 3 0x14200 bored softnet 41552 38998 0 0 3 0x14200 bored systqmp 98435 221099 0 0 3 0x14200 bored systq 56423 148283 0 0 3 0x40014200 bored softclock 84891 503018 0 0 3 0x40014200 idle0 1 32266 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 10175 6487K 7573K 78643K 68351 0 pcb 13 16K 17K 78643K 1223 0 rtable 247 8K 9K 78643K 569 0 ifaddr 88 18K 19K 78643K 201 0 sysctl 2 0K 0K 78643K 2 0 counters 27 17K 17K 78643K 39 0 ioctlops 0 0K 4K 78643K 2264 0 iov 0 0K 12K 78643K 381 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1399 87K 87K 78643K 13263 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 2 1K 5K 78643K 108 0 VM map 2 0K 0K 78643K 2 0 sem 12 0K 1K 78643K 826 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 17 61K 85K 78643K 29065 0 sigio 0 0K 0K 78643K 129 0 proc 58 55K 87K 78643K 753 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 160 0 in_multi 99 6K 6K 78643K 246 0 ether_multi 1 0K 0K 78643K 31 0 mrt 0 0K 0K 78643K 8 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 2K 78643K 1010 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 465 116K 705K 78643K 347748 0 UVM aobj 131 8K 8K 78643K 132 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 177 0 NDP 11 0K 2K 78643K 53 0 temp 134 4707K 4777K 78643K 87618 0 kqueue 12 18K 22K 78643K 236 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 98 0 95 1 0 1 1 0 8 0 rtentry 112 182 0 70 4 0 4 4 0 8 0 unpcb 136 1445 0 1432 17 16 1 5 0 8 0 syncache 296 23 0 23 6 6 0 1 0 8 0 tcpqe 32 38 0 38 5 5 0 1 0 8 0 tcpcb 736 607 0 603 18 17 1 13 0 8 0 arp 88 28 0 10 1 0 1 1 0 8 0 ipq 40 1 0 1 1 1 0 1 0 8 0 ipqe 40 1 0 1 1 1 0 1 0 8 0 inpcb 304 3049 0 3042 48 47 1 17 0 8 0 rttmr 72 1 0 1 1 1 0 1 0 8 0 nd6 48 51 0 18 1 0 1 1 0 8 0 pkpcb 40 4 0 4 2 2 0 1 0 8 0 kcovpl 48 12 0 4 1 0 1 1 0 8 0 ppxss 1152 1 0 1 1 1 0 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 117 0 117 7 7 0 4 0 482 0 pffrnode 88 94 0 94 4 4 0 1 0 8 0 pffrent 40 1352 0 1352 5 5 0 1 0 8 0 pfosfp 40 5 0 4 2 1 1 1 0 8 0 pfosfpen 112 5 0 1 2 1 1 1 0 8 0 pfrktable 1344 7 0 5 2 1 1 1 0 8 0 pftag 88 9 0 4 1 0 1 1 0 8 0 pfstitem 24 2 0 2 1 1 0 1 0 8 0 pfstkey 112 2 0 2 1 1 0 1 0 8 0 pfstate 320 1 1 1 1 1 0 1 0 8 0 pfrule 1360 40 0 31 2 1 1 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 760 0 261 33 1 32 32 0 8 0 art_table 32 761 0 261 5 0 5 5 0 8 0 art_node 16 181 0 82 1 0 1 1 0 8 0 sysvmsgpl 40 25 0 11 1 0 1 1 0 8 0 semupl 112 6 0 6 1 1 0 1 0 8 0 semapl 112 824 0 814 1 0 1 1 0 8 0 shmpl 112 129 0 1 4 0 4 4 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 31609 0 30179 90 0 90 90 0 8 0 ffsino 240 31609 0 30179 85 0 85 85 0 8 0 nchpl 144 63214 0 61590 62 0 62 62 0 8 0 uvmvnodes 80 5926 0 0 121 0 121 121 0 8 0 vnodes 224 5926 0 0 349 0 349 349 0 8 0 namei 1024 162169 0 162169 3 2 1 2 0 8 1 vcpupl 1984 3 0 2 1 0 1 1 0 8 0 vmpool 528 6 0 5 1 0 1 1 0 8 0 pfiaddrpl 120 4 0 1 2 1 1 1 0 8 0 scsiplug 72 2 0 2 2 2 0 1 0 8 0 scxspl 216 191711 0 191711 9 8 1 8 0 8 1 plimitpl 152 141 0 127 1 0 1 1 0 8 0 sigapl 424 29360 0 29297 9 1 8 8 0 8 1 futexpl 64 133783 0 133775 2 1 1 1 0 8 0 knotepl 120 239442 0 239362 9 5 4 9 0 8 0 kqueuepl 184 643 0 635 5 4 1 4 0 8 0 pipepl 304 1592 0 1564 53 45 8 8 0 8 5 fdescpl 432 29326 0 29298 4 0 4 4 0 8 0 filepl 120 71938 0 71698 159 147 12 15 0 8 4 lockfpl 104 1381 0 1379 1 0 1 1 0 8 0 lockfspl 48 485 0 483 1 0 1 1 0 8 0 sessionpl 144 27 0 11 1 0 1 1 0 8 0 pgrppl 48 182 0 166 1 0 1 1 0 8 0 ucredpl 96 3646 0 3636 1 0 1 1 0 8 0 zombiepl 144 29298 0 29297 1 0 1 1 0 8 0 processpl 1000 29360 0 29297 8 0 8 8 0 8 0 procpl 672 64977 0 64899 59 52 7 8 0 8 0 sosppl 168 34 0 34 8 8 0 1 0 8 0 sockpl 448 4670 0 4647 126 123 3 26 0 8 0 mcl64k 65536 404 0 404 52 52 0 1 0 8 0 mcl16k 16384 66 0 66 23 23 0 1 0 8 0 mcl12k 12288 506 0 506 52 51 1 1 0 8 1 mcl9k 9216 384 0 384 48 48 0 1 0 8 0 mcl8k 8192 2699 0 2699 34 33 1 1 0 8 1 mcl4k 4096 1506 0 1506 26 25 1 1 0 8 1 mcl2k2 2112 125 0 125 49 48 1 1 0 8 1 mcl2k 2048 134739 0 134497 131 99 32 32 0 8 1 mtagpl 96 17040 0 15675 108 74 34 34 0 8 0 mbufpl 256 371293 0 369759 281 184 97 97 0 8 0 bufpl 288 35314 0 28903 459 0 459 459 0 8 0 anonpl 24 7401775 0 7381204 207 78 129 154 0 188 0 amapchunkpl 152 841345 0 840482 410 375 35 346 0 158 0 amappl16 200 61157 0 60444 88 49 39 51 0 8 0 amappl15 192 96 0 92 1 0 1 1 0 8 0 amappl14 184 4981 0 4974 1 0 1 1 0 8 0 amappl13 176 3713 0 3707 1 0 1 1 0 8 0 amappl12 168 7307 0 7302 2 1 1 1 0 8 0 amappl11 160 276 0 265 1 0 1 1 0 8 0 amappl10 152 3430 0 3425 1 0 1 1 0 8 0 amappl9 144 3816 0 3810 1 0 1 1 0 8 0 amappl8 136 7397 0 7225 6 0 6 6 0 8 0 amappl7 128 6170 0 6156 1 0 1 1 0 8 0 amappl6 120 3563 0 3538 2 1 1 2 0 8 0 amappl5 112 25424 0 25409 1 0 1 1 0 8 0 amappl4 104 1210 0 1173 2 0 2 2 0 8 0 amappl3 96 11847 0 11832 1 0 1 1 0 8 0 amappl2 88 8400 0 8348 3 1 2 3 0 8 0 amappl1 80 485194 0 484616 18 5 13 18 0 8 0 amappl 88 347079 0 346807 10 3 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 72 131 0 1 3 0 3 3 0 8 0 uaddrrnd 24 29332 0 29303 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 29332 0 29303 1 0 1 1 0 8 0 vmmpekpl 168 162801 0 162758 3 0 3 3 0 8 0 vmmpepl 168 2510574 0 2507741 317 189 128 143 0 357 1 vmsppl 272 29331 0 29303 5 2 3 3 0 8 0 rwobjpl 24 546273 0 538435 48 0 48 48 0 8 0 pdppl 4096 58670 0 58607 975 910 65 74 0 8 2 pvpl 32 12314025 0 12288867 385 178 207 244 0 265 0 pmappl 216 29331 0 29303 2 0 2 2 0 8 0 extentpl 40 58 0 38 1 0 1 1 0 8 0 phpool 112 2350 0 1474 26 0 26 26 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:440 panic(ffffffff82547535) at panic+0x161 sys/kern/subr_prf.c:202 __assert(ffffffff825bcce5,ffffffff82570c58,90,ffffffff82525102) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_pagealloc_pg(fffffd8006955b80,fffffd806a920a38,d985000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline] uvm_pagealloc_pg(fffffd8006955b80,fffffd806a920a38,d985000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:710 uvm_pagealloc(fffffd806a920a38,d985000,0,3) at uvm_pagealloc+0x1e8 sys/uvm/uvm_page.c:918 pmap_get_ptp(fffffd806a920a28,1b30b21000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1183 pmap_enter(fffffd806a920a28,1b30b21000,71ccd000,3,20) at pmap_enter+0x2a0 uvm_fault_lower_lookup(ffff8000299951e0,ffff800029995218,ffff800029995160) at uvm_fault_lower_lookup+0x263 sys/uvm/uvm_fault.c:1183 uvm_fault_lower(ffff8000299951e0,ffff800029995218,ffff800029995160,0) at uvm_fault_lower+0x5f sys/uvm/uvm_fault.c:1218 uvm_fault(fffffd807cca6118,1b30b20000,0,2) at uvm_fault+0x21d upageflttrap(ffff800029995350,1b30b2003c) at upageflttrap+0x79 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff800029995350) at usertrap+0x198 sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffc4e50, count: -13 ddb> machine ddbcpu 1 No such command ddb> trace db_enter() at db_enter+0x18 sys/arch/amd64/amd64/db_interface.c:440 panic(ffffffff82547535) at panic+0x161 sys/kern/subr_prf.c:202 __assert(ffffffff825bcce5,ffffffff82570c58,90,ffffffff82525102) at __assert+0x25 sys/kern/subr_prf.c:161 uvm_pagealloc_pg(fffffd8006955b80,fffffd806a920a38,d985000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline] uvm_pagealloc_pg(fffffd8006955b80,fffffd806a920a38,d985000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:710 uvm_pagealloc(fffffd806a920a38,d985000,0,3) at uvm_pagealloc+0x1e8 sys/uvm/uvm_page.c:918 pmap_get_ptp(fffffd806a920a28,1b30b21000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1183 pmap_enter(fffffd806a920a28,1b30b21000,71ccd000,3,20) at pmap_enter+0x2a0 uvm_fault_lower_lookup(ffff8000299951e0,ffff800029995218,ffff800029995160) at uvm_fault_lower_lookup+0x263 sys/uvm/uvm_fault.c:1183 uvm_fault_lower(ffff8000299951e0,ffff800029995218,ffff800029995160,0) at uvm_fault_lower+0x5f sys/uvm/uvm_fault.c:1218 uvm_fault(fffffd807cca6118,1b30b20000,0,2) at uvm_fault+0x21d upageflttrap(ffff800029995350,1b30b2003c) at upageflttrap+0x79 sys/arch/amd64/amd64/trap.c:181 usertrap(ffff800029995350) at usertrap+0x198 sys/arch/amd64/amd64/trap.c:403 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x7f7ffffc4e50, count: -13