앹@B/<5!}>@ TQBle>m#&[!$GaZ"$lEάfGHu^ wNr7m_`[tO%Npanic: 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 *161464 49598 0 0 0 0 syz-executor.7 db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8284d98f) at panic+0x165 sys/kern/subr_prf.c:198 __assert(ffffffff828d2816,ffffffff82878a9a,90,ffffffff8282300b) at __assert+0x29 sys/kern/subr_prf.c:157 uvm_pagealloc_pg(fffffd800621e500,fffffd807f013a30,38b7cf8000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline] uvm_pagealloc_pg(fffffd800621e500,fffffd807f013a30,38b7cf8000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709 uvm_pagealloc(fffffd807f013a30,38b7cf8000,0,3) at uvm_pagealloc+0x1ec sys/uvm/uvm_page.c:917 pmap_get_ptp(fffffd807f013a20,716f9f04c000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1215 pmap_enter(fffffd807f013a20,716f9f04c000,77eb9000,1,20) at pmap_enter+0x29d sys/arch/amd64/amd64/pmap.c:2722 uvm_fault_upper_lookup(ffff80002db2afb0,ffff80002db2afe8,ffff80002db2aeb0,ffff80002db2af30) at uvm_fault_upper_lookup+0x2a1 sys/uvm/uvm_fault.c:895 uvm_fault(fffffd80623f9018,716f9f04d000,0,2) at uvm_fault+0x109 sys/uvm/uvm_fault.c:605 upageflttrap(ffff80002db2b130,716f9f04d7b0) at upageflttrap+0x80 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002db2b130) at usertrap+0x20d sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x716f9f04d910, 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(ffffffff8284d98f) at panic+0x165 sys/kern/subr_prf.c:198 __assert(ffffffff828d2816,ffffffff82878a9a,90,ffffffff8282300b) at __assert+0x29 sys/kern/subr_prf.c:157 uvm_pagealloc_pg(fffffd800621e500,fffffd807f013a30,38b7cf8000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline] uvm_pagealloc_pg(fffffd800621e500,fffffd807f013a30,38b7cf8000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709 uvm_pagealloc(fffffd807f013a30,38b7cf8000,0,3) at uvm_pagealloc+0x1ec sys/uvm/uvm_page.c:917 pmap_get_ptp(fffffd807f013a20,716f9f04c000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1215 pmap_enter(fffffd807f013a20,716f9f04c000,77eb9000,1,20) at pmap_enter+0x29d sys/arch/amd64/amd64/pmap.c:2722 uvm_fault_upper_lookup(ffff80002db2afb0,ffff80002db2afe8,ffff80002db2aeb0,ffff80002db2af30) at uvm_fault_upper_lookup+0x2a1 sys/uvm/uvm_fault.c:895 uvm_fault(fffffd80623f9018,716f9f04d000,0,2) at uvm_fault+0x109 sys/uvm/uvm_fault.c:605 upageflttrap(ffff80002db2b130,716f9f04d7b0) at upageflttrap+0x80 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002db2b130) at usertrap+0x20d sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x716f9f04d910, count: -12 ddb> show registers rdi 0 rsi 0x1 rbp 0xffff80002db2aac0 rbx 0 rdx 0 rcx 0 rax 0xffff80002a6782c0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x855042b157b054cc r11 0xcef0cf5fc10fc23b r12 0 r13 0x38b7cf8000 r14 0 r15 0x1 rip 0xffffffff82600fcc db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002db2aab0 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb> show proc PROC (syz-executor.7) tid=161464 pid=49598 tcnt=2 stat=onproc flags process=0 proc=0 runpri=74, usrpri=74, slppri=16, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a6d42b0,0xffff80002a678ac8 process=0xffff800035db0018 user=0xffff80002db26000, vmspace=0xfffffd80623f9018 estcpu=24, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb> ps PID TID PPID UID S FLAGS WAIT COMMAND 40165 297067 28194 0 2 0 syz-executor.6 28901 250810 25643 0 2 0 syz-executor.2 28901 337486 25643 0 2 0x4000000 syz-executor.2 28901 309676 25643 0 2 0x4000000 syz-executor.2 28901 99007 25643 0 2 0x4000000 syz-executor.2 68067 59217 51315 0 2 0 syz-executor.1 68067 268135 51315 0 2 0x4000000 syz-executor.1 89294 353847 81085 0 2 0 syz-executor.5 *49598 161464 1833 0 7 0 syz-executor.7 49598 246323 1833 0 3 0x4000080 fsleep syz-executor.7 92847 165994 11531 0 3 0x80 nanoslp syz-executor.4 92847 420370 11531 0 3 0x4000080 ttyout syz-executor.4 92847 135375 11531 0 3 0x4000080 ttyout syz-executor.4 92847 420642 11531 0 3 0x4000080 fsleep syz-executor.4 25643 445769 48869 0 3 0x82 nanoslp syz-executor.2 53247 174203 0 0 3 0x14280 nfsidl nfsio 75354 386283 0 0 3 0x14280 nfsidl nfsio 20260 492371 0 0 3 0x14280 nfsidl nfsio 41771 152951 0 0 3 0x14280 nfsidl nfsio 43158 456670 0 0 3 0x14280 nfsidl nfsio 96603 414688 0 0 3 0x14280 nfsidl nfsio 29590 157682 0 0 3 0x14280 nfsidl nfsio 71496 1156 0 0 3 0x14280 nfsidl nfsio 90765 498895 0 0 3 0x14280 nfsidl nfsio 97100 88717 0 0 3 0x14280 nfsidl nfsio 45684 489665 0 0 3 0x14280 nfsidl nfsio 80247 202157 0 0 3 0x14280 nfsidl nfsio 45371 488450 0 0 3 0x14280 nfsidl nfsio 29794 335185 0 0 3 0x14280 nfsidl nfsio 25045 168657 0 0 3 0x14280 nfsidl nfsio 70020 370555 0 0 3 0x14280 nfsidl nfsio 51038 46079 0 0 3 0x14280 nfsidl nfsio 43650 2458 0 0 3 0x14280 nfsidl nfsio 60712 78224 0 0 3 0x14280 nfsidl nfsio 5901 377319 0 0 3 0x14280 nfsidl nfsio 82126 170107 0 0 3 0x14200 bored sosplice 28194 143338 48869 0 3 0x82 nanoslp syz-executor.6 81085 142010 48869 0 3 0x82 nanoslp syz-executor.5 1833 46407 48869 0 3 0x82 nanoslp syz-executor.7 55285 85300 48869 0 3 0x2 biowait syz-executor.3 51315 346041 48869 0 3 0x82 nanoslp syz-executor.1 11531 126311 48869 0 3 0x82 nanoslp syz-executor.4 80096 397759 48869 0 3 0x82 nanoslp syz-executor.0 48869 223364 3587 0 3 0x2000082 thrsleep syz-fuzzer 48869 427024 3587 0 3 0x6000082 nanoslp syz-fuzzer 48869 348663 3587 0 3 0x6000082 wait syz-fuzzer 48869 33493 3587 0 3 0x6000082 thrsleep syz-fuzzer 48869 379096 3587 0 3 0x6000082 thrsleep syz-fuzzer 48869 66879 3587 0 3 0x6000082 wait syz-fuzzer 48869 76825 3587 0 3 0x6000082 wait syz-fuzzer 48869 137042 3587 0 3 0x6000082 wait syz-fuzzer 48869 126713 3587 0 3 0x6000082 wait syz-fuzzer 48869 307796 3587 0 3 0x6000082 thrsleep syz-fuzzer 48869 443395 3587 0 3 0x6000082 wait syz-fuzzer 48869 476178 3587 0 3 0x6000082 wait syz-fuzzer 48869 295880 3587 0 3 0x6000082 kqread syz-fuzzer 48869 499156 3587 0 3 0x6000082 wait syz-fuzzer 3587 426741 41169 0 3 0x10008a sigsusp ksh 41169 475425 29823 0 3 0x9a kqread sshd 89976 6669 1 0 3 0x100083 ttyin getty 29823 231402 1 0 3 0x88 kqread sshd 26897 504531 27299 73 3 0x1100090 kqread syslogd 27299 115111 1 0 3 0x100082 netio syslogd 21179 18248 1 0 3 0x100080 kqread resolvd 68094 146098 85960 77 3 0x100092 kqread dhcpleased 1082 403006 85960 77 3 0x100092 kqread dhcpleased 85960 256793 1 0 3 0x80 kqread dhcpleased 54004 376746 0 0 3 0x14200 bored smr 33124 481204 0 0 2 0x14200 zerothread 68682 143589 0 0 3 0x14200 aiodoned aiodoned 31797 321968 0 0 3 0x14200 syncer update 15690 471985 0 0 3 0x14200 cleaner cleaner 59788 213767 0 0 3 0x14200 reaper reaper 91138 304486 0 0 3 0x14200 pgdaemon pagedaemon 37741 417355 0 0 3 0x14200 bored viomb 9712 397793 0 0 3 0x40014200 acpi0 acpi0 10542 50740 0 0 3 0x14200 bored softnet3 1685 258897 0 0 3 0x14200 bored softnet2 53853 447434 0 0 3 0x14200 bored softnet1 96530 413113 0 0 3 0x14200 bored softnet0 59241 73974 0 0 3 0x14200 bored systqmp 72814 425542 0 0 3 0x14200 bored systq 14146 303569 0 0 3 0x40014200 tmoslp softclock 22654 337706 0 0 3 0x40014200 idle0 1 13295 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 10179 6410K 6938K 166960K 13002 0 pcb 15 10K 10K 166960K 37 0 rtable 204 14K 15K 166960K 424 0 pf 31 9K 9K 166960K 59 0 ifaddr 39 10K 11K 166960K 63 0 ifgroup 54 2K 2K 166960K 98 0 sysctl 2 0K 0K 166960K 2 0 counters 31 17K 17K 166960K 42 0 ioctlops 0 0K 2K 166960K 271 0 iov 1 0K 16K 166960K 105 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1346 84K 84K 166960K 1746 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 26 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 177 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 16 57K 69K 166960K 1104 0 sigio 0 0K 0K 166960K 56 0 proc 58 59K 83K 166960K 511 0 subproc 104 6K 6K 166960K 117 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 28 0 in_multi 83 6K 7K 166960K 116 0 ether_multi 1 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 67 307K 307K 166960K 67 0 exec 0 0K 1K 166960K 565 0 pfkey data 0 0K 0K 166960K 4 0 tdb 3 0K 0K 166960K 3 0 pagedep 1 8K 8K 166960K 1 0 inodedep 1 32K 32K 166960K 1 0 newblk 1 0K 0K 166960K 1 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 314 81K 86K 166960K 12366 0 UVM aobj 67 3K 3K 166960K 70 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 25 0 NDP 12 0K 2K 166960K 42 0 temp 74 6704K 6780K 166960K 8579 0 kqueue 13 20K 26K 166960K 118 0 SYN cache 2 16K 16K 166960K 2 0 ddb> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle rtpcb 120 62 0 59 1 0 1 1 0 8 0 rtentry 112 129 0 37 4 0 4 4 0 8 0 unpcb 144 651 0 638 9 8 1 6 0 8 0 syncache 312 7 0 7 2 1 1 1 0 8 1 tcpqe 32 239 0 239 3 2 1 1 0 8 1 tcpcb 808 328 0 319 17 15 2 7 0 8 0 arp 88 21 0 7 1 0 1 1 0 8 0 inpcb 336 671 0 660 20 18 2 7 0 8 0 nd6 104 28 0 9 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 1 0 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1072 3 0 3 1 1 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 545 0 136 29 1 28 29 0 8 0 art_table 32 546 0 136 4 0 4 4 0 8 0 art_node 16 128 0 44 1 0 1 1 0 8 0 sysvmsgpl 40 46 0 6 1 0 1 1 0 8 0 semapl 112 175 0 165 1 0 1 1 0 8 0 shmpl 112 67 0 3 2 0 2 2 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 2756 0 1316 91 0 91 91 0 8 0 ffsino 240 2756 0 1316 86 0 86 86 0 8 0 nchpl 144 4342 0 2698 63 0 63 63 0 8 0 uvmvnodes 80 3198 0 0 66 0 66 66 0 8 0 vnodes 216 3198 0 0 178 0 178 178 0 8 0 namei 1024 15231 0 15230 4 3 1 3 0 8 0 vcpupl 2048 10 0 1 2 0 2 2 0 8 0 vmpool 664 17 0 8 2 1 1 1 0 8 0 kstatmem 264 46 0 22 2 0 2 2 0 8 0 scxspl 216 14928 0 14927 17 16 1 8 1 8 0 plimitpl 152 166 0 151 1 0 1 1 0 8 0 sigapl 424 1418 0 1353 8 0 8 8 0 8 0 futexpl 64 9687 0 9685 1 0 1 1 0 8 0 knotepl 120 13276 0 13192 7 3 4 7 0 8 0 kqueuepl 184 250 0 241 6 5 1 4 0 8 0 pipepl 288 394 0 366 14 11 3 7 0 8 1 fdescpl 432 1381 0 1354 4 0 4 4 0 8 0 filepl 120 7536 0 7299 28 18 10 15 0 8 2 lockfpl 104 411 0 409 3 2 1 2 0 8 0 lockfspl 48 134 0 132 1 0 1 1 0 8 0 sessionpl 144 24 0 8 1 0 1 1 0 8 0 pgrppl 48 63 0 47 1 0 1 1 0 8 0 ucredpl 104 972 0 962 1 0 1 1 0 8 0 zombiepl 144 1354 0 1353 1 0 1 1 0 8 0 processpl 1072 1418 0 1353 5 0 5 5 0 8 0 procpl 680 2981 0 2895 11 2 9 9 0 8 1 sosppl 168 21 0 21 4 3 1 1 0 8 1 sockpl 456 1399 0 1372 48 43 5 21 0 8 1 mcl64k 65536 28 0 28 4 3 1 1 0 8 1 mcl16k 16384 19 0 19 5 4 1 1 0 8 1 mcl12k 12288 84 0 84 1 0 1 1 0 8 1 mcl9k 9216 19 0 19 4 4 0 1 0 8 0 mcl8k 8192 70 0 70 5 4 1 1 0 8 1 mcl4k 4096 134 0 134 3 2 1 1 0 8 1 mcl2k2 2112 3 0 3 1 1 0 1 0 8 0 mcl2k 2048 68613 0 68553 33 24 9 29 0 8 0 mtagpl 96 121 0 93 5 3 2 3 0 8 0 mbufpl 256 116352 0 116174 29 13 16 23 0 8 0 bufpl 288 6302 0 141 441 0 441 441 0 8 0 anonpl 24 268735 0 254998 93 0 93 93 0 188 0 amapchunkpl 152 40763 0 39948 53 16 37 45 0 158 2 amappl16 200 6537 0 6062 30 4 26 29 0 8 0 amappl15 192 6 0 6 1 1 0 1 0 8 0 amappl14 184 151 0 139 2 1 1 2 0 8 0 amappl13 176 26 0 25 1 0 1 1 0 8 0 amappl12 168 2017 0 1987 2 0 2 2 0 8 0 amappl11 160 49 0 39 1 0 1 1 0 8 0 amappl10 152 27 0 17 2 1 1 1 0 8 0 amappl9 144 154 0 152 1 0 1 1 0 8 0 amappl8 136 181 0 131 2 0 2 2 0 8 0 amappl7 128 173 0 153 2 0 2 2 0 8 0 amappl6 120 252 0 241 1 0 1 1 0 8 0 amappl5 112 131 0 123 1 0 1 1 0 8 0 amappl4 104 427 0 406 2 1 1 2 0 8 0 amappl3 96 8386 0 8306 3 0 3 3 0 8 0 amappl2 88 1844 0 1773 3 1 2 3 0 8 0 amappl1 80 12951 0 12447 22 11 11 22 0 8 0 amappl 88 11828 0 11622 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 69 0 3 2 0 2 2 0 8 0 uaddrrnd 24 1398 0 1362 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1398 0 1362 1 0 1 1 0 8 0 vmmpekpl 168 16115 0 16063 3 0 3 3 0 8 0 vmmpepl 168 102185 0 99957 140 36 104 123 0 357 1 vmsppl 352 1397 0 1362 4 0 4 4 0 8 0 rwobjpl 24 34435 0 29715 29 0 29 29 0 8 0 pdppl 4096 2802 0 2733 172 100 72 73 0 8 3 pvpl 32 625566 0 606366 347 179 168 342 0 265 0 pmappl 216 1397 0 1362 3 0 3 3 0 8 1 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 975 0 203 23 0 23 23 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(ffffffff8284d98f) at panic+0x165 sys/kern/subr_prf.c:198 __assert(ffffffff828d2816,ffffffff82878a9a,90,ffffffff8282300b) at __assert+0x29 sys/kern/subr_prf.c:157 uvm_pagealloc_pg(fffffd800621e500,fffffd807f013a30,38b7cf8000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline] uvm_pagealloc_pg(fffffd800621e500,fffffd807f013a30,38b7cf8000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709 uvm_pagealloc(fffffd807f013a30,38b7cf8000,0,3) at uvm_pagealloc+0x1ec sys/uvm/uvm_page.c:917 pmap_get_ptp(fffffd807f013a20,716f9f04c000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1215 pmap_enter(fffffd807f013a20,716f9f04c000,77eb9000,1,20) at pmap_enter+0x29d sys/arch/amd64/amd64/pmap.c:2722 uvm_fault_upper_lookup(ffff80002db2afb0,ffff80002db2afe8,ffff80002db2aeb0,ffff80002db2af30) at uvm_fault_upper_lookup+0x2a1 sys/uvm/uvm_fault.c:895 uvm_fault(fffffd80623f9018,716f9f04d000,0,2) at uvm_fault+0x109 sys/uvm/uvm_fault.c:605 upageflttrap(ffff80002db2b130,716f9f04d7b0) at upageflttrap+0x80 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002db2b130) at usertrap+0x20d sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x716f9f04d910, 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(ffffffff8284d98f) at panic+0x165 sys/kern/subr_prf.c:198 __assert(ffffffff828d2816,ffffffff82878a9a,90,ffffffff8282300b) at __assert+0x29 sys/kern/subr_prf.c:157 uvm_pagealloc_pg(fffffd800621e500,fffffd807f013a30,38b7cf8000,0) at uvm_pagealloc_pg+0x427 uvm_pageinsert sys/uvm/uvm_page.c:138 [inline] uvm_pagealloc_pg(fffffd800621e500,fffffd807f013a30,38b7cf8000,0) at uvm_pagealloc_pg+0x427 sys/uvm/uvm_page.c:709 uvm_pagealloc(fffffd807f013a30,38b7cf8000,0,3) at uvm_pagealloc+0x1ec sys/uvm/uvm_page.c:917 pmap_get_ptp(fffffd807f013a20,716f9f04c000) at pmap_get_ptp+0x18d sys/arch/amd64/amd64/pmap.c:1215 pmap_enter(fffffd807f013a20,716f9f04c000,77eb9000,1,20) at pmap_enter+0x29d sys/arch/amd64/amd64/pmap.c:2722 uvm_fault_upper_lookup(ffff80002db2afb0,ffff80002db2afe8,ffff80002db2aeb0,ffff80002db2af30) at uvm_fault_upper_lookup+0x2a1 sys/uvm/uvm_fault.c:895 uvm_fault(fffffd80623f9018,716f9f04d000,0,2) at uvm_fault+0x109 sys/uvm/uvm_fault.c:605 upageflttrap(ffff80002db2b130,716f9f04d7b0) at upageflttrap+0x80 sys/arch/amd64/amd64/trap.c:188 usertrap(ffff80002db2b130) at usertrap+0x20d sys/arch/amd64/amd64/trap.c:436 recall_trap() at recall_trap+0x8 end of kernel end trace frame: 0x716f9f04d910, count: -12