uvm_fault(0xfffffd8069ffd5e0, 0x0, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff82342d88 cs 8 rflags 10207 cr2 0 cpl 0 rsp ffff80003280f5b0 gsbase 0xffff8000299fdff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff82342d88 Starting stack trace... panic(ffffffff833a2119) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80003280f500) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dt_ioctl_record_stop(ffff8000015a3000) at dt_ioctl_record_stop+0x108 sys/dev/dt/dt_dev.c:586 dtclose(11e5f,81,2000,ffff80002a2c6020) at dtclose+0x109 dt_pcb_purge sys/dev/dt/dt_dev.c:-1 [inline] dtclose(11e5f,81,2000,ffff80002a2c6020) at dtclose+0x109 sys/dev/dt/dt_dev.c:232 spec_close(ffff80003280f6b0) at spec_close+0x466 sys/kern/spec_vnops.c:-1 VOP_CLOSE(fffffd805a31ea20,81,fffffd80097fb478,ffff80002a2c6020) at VOP_CLOSE+0x132 sys/kern/vfs_vops.c:156 vn_closefile(fffffd8064ec1930,ffff80002a2c6020) at vn_closefile+0x12b vn_close sys/kern/vfs_vnops.c:292 [inline] vn_closefile(fffffd8064ec1930,ffff80002a2c6020) at vn_closefile+0x12b sys/kern/vfs_vnops.c:615 fdrop(fffffd8064ec1930,ffff80002a2c6020) at fdrop+0x121 sys/kern/kern_descrip.c:1280 closef(fffffd8064ec1930,ffff80002a2c6020) at closef+0x192 sys/kern/kern_descrip.c:1264 fdfree(ffff80002a2c6020) at fdfree+0x116 sys/kern/kern_descrip.c:1195 exit1(ffff80002a2c6020,0,0,1) at exit1+0x576 sys/kern/kern_exit.c:215 sys_exit(ffff80002a2c6020,ffff80003280fa20,ffff80003280f970) at sys_exit+0x1a sys/kern/kern_exit.c:-1 syscall(ffff80003280fa20) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003280fa20) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x794402f77af0, count: 242 End of stack trace. WARNING: SPL NOT LOWERED ON SYSCALL 49 0 EXIT 0 4 Stopped at savectx+0xae: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND *497773 82364 0 0 0x4000000 1 syz-executor 335300 57413 0 0x2 0 0 syz-executor savectx() at savectx+0xae end of kernel end trace frame: 0xd75ec16d360, count: 14 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: uvm_fault(0xfffffd8069ffd5e0, 0x0, 0, 1) -> e ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0xd75ec16d360, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c461880 rbx 0 rdx 0 rcx 0xffff80003c446028 rax 0x32 r8 0xffff80003c4617b0 r9 0x80713 acpi_pdirpa+0x6c584 r10 0x5c3e0812af55816c r11 0xe1cff248a798f1a9 r12 0 r13 0 r14 0xffff80003c446028 r15 0 rip 0xffffffff8189c3ee savectx+0xae cs 0x8 rflags 0x46 rsp 0xffff80003c461800 ss 0x10 savectx+0xae: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=497773 pid=82364 tcnt=3 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c447250,0xffffffff83893598 process=0xffff80002a2b6710 user=0xffff80003c45c000, vmspace=0xfffffd8069ffdd80 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 82364 232045 47446 0 2 0 syz-executor 82364 502186 47446 0 3 0x4000000 biowait syz-executor *82364 497773 47446 0 7 0x4000000 syz-executor 54990 300468 57211 0 2 0 syz-executor 54990 309908 57211 0 3 0x4000080 fsleep syz-executor 16872 70133 92239 0 2 0 syz-executor 16872 336785 92239 0 3 0x4000080 fsleep syz-executor 49802 21682 83850 0 3 0x80 nanoslp syz-executor 49802 207852 83850 0 3 0x4000080 kqsel syz-executor 49802 446542 83850 0 3 0x4000080 fsleep syz-executor 49802 120499 83850 0 3 0x4000080 fsleep syz-executor 91684 383206 84888 0 3 0x80 nanoslp syz-executor 91684 54602 84888 0 3 0x4000080 sbwait syz-executor 91684 399518 84888 0 3 0x4000080 fsleep syz-executor 22334 394369 0 0 3 0x14200 acct acct 84888 425271 57413 0 3 0x82 nanoslp syz-executor 2816 38807 57413 0 3 0x2 biowait syz-executor 57211 355624 57413 0 3 0x82 nanoslp syz-executor 92239 288725 57413 0 3 0x82 nanoslp syz-executor 31122 344258 0 0 3 0x14200 bored sosplice 83850 344352 57413 0 3 0x82 nanoslp syz-executor 47446 490388 57413 0 3 0x82 nanoslp syz-executor 2708 466376 57413 0 3 0x82 nanoslp syz-executor 9604 337110 57413 0 3 0x82 wait syz-executor 57413 335300 85537 0 7 0x2 syz-executor 85537 379026 62109 0 3 0x10008a sigsusp ksh 62109 375655 16474 0 3 0x98 kqread sshd-session 16474 384986 51654 0 3 0x92 kqread sshd-session 4570 284467 1 0 3 0x100083 ttyin getty 51654 222954 1 0 3 0x88 kqread sshd 93497 412292 90611 74 3 0x1100092 bpf pflogd 90611 59303 1 0 3 0x80 sbwait pflogd 20155 407494 54270 73 3 0x1100090 kqread syslogd 54270 450362 1 0 3 0x100082 sbwait syslogd 60836 65194 1 0 3 0x100080 kqread resolvd 97370 340528 12400 77 3 0x100092 kqread dhcpleased 2562 382697 12400 77 3 0x100092 kqread dhcpleased 12400 262432 1 0 3 0x80 kqread dhcpleased 27214 166136 0 0 3 0x14200 bored smr 81830 477677 0 0 2 0x14200 zerothread 46042 509045 0 0 3 0x14200 aiodoned aiodoned 54402 382607 0 0 3 0x14200 syncer update 88426 312012 0 0 3 0x14200 cleaner cleaner 62308 337251 0 0 3 0x14200 reaper reaper 40569 202268 0 0 3 0x14200 pgdaemon pagedaemon 5532 452142 0 0 3 0x14200 bored viomb 25691 478603 0 0 3 0x40014200 acpi0 acpi0 51644 1584 0 0 3 0x40014200 idle1 4906 285825 0 0 3 0x14200 bored softnet7 65008 82032 0 0 3 0x14200 bored softnet6 95719 237353 0 0 3 0x14200 bored softnet5 99414 113155 0 0 3 0x14200 bored softnet4 27988 436181 0 0 3 0x14200 bored softnet3 69144 131146 0 0 3 0x14200 bored softnet2 76411 356163 0 0 3 0x14200 bored softnet1 36369 222666 0 0 3 0x14200 netlock softnet0 72889 126176 0 0 2 0x40014200 systqmp 4472 40176 0 0 3 0x14200 bored systq 36528 132390 0 0 3 0x14200 tmoslp softclockmp 83536 246122 0 0 3 0x40014200 tmoslp softclock 2556 202729 0 0 3 0x40014200 idle0 1 100175 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 82364 (syz-executor) thread 0xffff80003c446fb8 (232045) Process 82364 (syz-executor) thread 0xffff80003c447250 (502186) Process 2816 (syz-executor) thread 0xffff80002a2c67e8 (38807) ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10285 11131K 12424K 166960K 14951 0 pcb 17 16K 18K 166960K 640 0 rtable 199 12K 12K 166960K 753 0 pf 44 19K 82K 166960K 376 0 ifaddr 37 6K 7K 166960K 175 0 ifgroup 68 2K 3K 166960K 349 0 sysctl 4 1K 9K 166960K 54 0 counters 74 37K 38K 166960K 684 0 ioctlops 0 0K 4K 166960K 2115 0 iov 0 0K 16K 166960K 402 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1514 95K 96K 166960K 3964 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 9K 166960K 39 0 VM map 2 1K 1K 166960K 2 0 sem 25 6K 6K 166960K 54 0 dirhash 12 2K 3K 166960K 51 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 17 61K 240K 166960K 2650 0 sigio 1 0K 0K 166960K 63 0 proc 75 131K 196K 166960K 903 0 subproc 72 4K 4K 166960K 108 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 393 0 in_multi 63 4K 7K 166960K 226 0 ether_multi 1 0K 0K 166960K 27 0 mrt 1 0K 0K 166960K 11 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 259 1155K 1155K 166960K 259 0 exec 0 0K 1K 166960K 725 0 fusefs mount 1 32K 32K 166960K 1 0 pfkey data 0 0K 0K 166960K 8 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 259 160K 175K 166960K 26047 0 UVM aobj 89 6K 6K 166960K 101 0 pinsyscall 42 84K 102K 166960K 3806 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 219 0 NDP 15 0K 1K 166960K 132 0 temp 84 8652K 8732K 166960K 152172 0 kqueue 13 20K 32K 166960K 456 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 26 0 0 1 0 1 1 0 8 0 rtpcb 120 380 0 377 3 2 1 3 0 8 0 rtentry 176 190 0 121 5 0 5 5 0 8 0 unpcb 144 1752 0 1731 16 12 4 6 0 8 3 syncache 336 4 0 4 2 2 0 1 0 8 0 tcpqe 32 4 0 4 1 1 0 1 0 8 0 tcpcb 736 691 0 685 9 8 1 4 0 8 0 arp 128 22 0 12 1 0 1 1 0 8 0 inpcb 328 2597 0 2586 19 15 4 7 0 8 2 nd6 144 32 0 17 1 0 1 1 0 8 0 pkpcb 40 90 0 90 4 3 1 1 0 8 1 kcovpl 48 12 0 4 1 0 1 1 0 8 0 ppxss 1192 270 0 270 2 1 1 1 0 8 1 pppxif 1504 14 0 14 2 2 0 1 0 8 0 pfstscr 40 2 0 2 1 1 0 1 0 8 0 pffrag 232 19 0 10 1 0 1 1 0 482 0 pffrnode 88 13 0 6 1 0 1 1 0 8 0 pffrent 40 42 0 32 1 0 1 1 0 8 0 pfosfp 40 1428 0 1428 5 5 0 5 0 8 0 pfosfpen 112 1428 0 1428 21 21 0 21 0 8 0 pfrktable 1344 1 0 1 1 1 0 1 0 8 0 pfanchor 1288 2 0 0 1 0 1 1 0 8 0 pfstitem 24 185 0 55 1 0 1 1 0 8 0 pfstkey 128 186 0 56 5 0 5 5 0 8 0 pfstate 384 185 0 56 14 0 14 14 0 8 0 pfrule 1344 97 0 91 2 1 1 2 0 8 0 art_heap8 4096 4 0 0 4 0 4 4 0 8 0 art_heap4 256 809 0 479 32 8 24 29 0 8 0 art_table 40 813 0 479 5 0 5 5 0 8 0 art_node 32 184 0 124 1 0 1 1 0 8 0 sysvmsgpl 40 15 0 10 1 0 1 1 0 8 0 semupl 112 2 0 2 2 2 0 1 0 8 0 semapl 112 44 0 21 1 0 1 1 0 8 0 shmpl 112 98 0 12 3 0 3 3 0 8 0 dirhash 1024 43 0 26 3 0 3 3 0 8 0 dino2pl 256 6431 0 4911 96 0 96 96 0 8 0 ffsino 296 6431 0 4911 118 0 118 118 0 8 0 nchpl 144 10225 0 9670 64 34 30 64 0 8 4 rtmask 32 19 0 19 4 3 1 1 0 8 1 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 35816 0 35815 7 4 3 3 0 8 2 percpumem 16 357 0 305 1 0 1 1 0 8 0 kstatmem 264 220 0 184 4 1 3 3 0 8 0 scsiplug 72 10 0 10 4 3 1 1 0 8 1 scxspl 216 74482 0 74480 12 10 2 7 1 8 1 plimitpl 152 528 0 510 1 0 1 1 0 8 0 sigapl 424 2948 0 2893 9 2 7 9 0 8 0 knotepl 120 652 0 0 20 0 20 20 0 8 0 kqueuepl 224 1004 0 993 9 6 3 5 0 8 2 pipepl 344 504 0 475 21 12 9 9 0 8 6 fdescpl 528 2896 0 2865 3 0 3 3 0 8 0 filepl 160 20456 0 20218 29 13 16 17 0 8 3 lockfpl 104 1536 0 1533 3 2 1 2 0 8 0 lockfspl 48 592 0 589 1 0 1 1 0 8 0 sessionpl 144 26 0 17 1 0 1 1 0 8 0 pgrppl 48 68 0 51 1 0 1 1 0 8 0 ucredpl 104 3803 0 3789 1 0 1 1 0 8 0 zombiepl 144 3180 0 3178 2 1 1 1 0 8 0 processpl 1248 2948 0 2893 6 0 6 6 0 8 0 procpl 664 7334 0 7270 9 2 7 9 0 8 0 sosppl 168 22 0 22 4 3 1 1 0 8 1 sockpl 752 4888 0 4853 36 25 11 17 0 8 7 mcl64k 65536 18 0 0 3 0 3 3 0 8 0 mcl16k 16384 9 0 0 2 0 2 2 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 7 0 0 1 0 1 1 0 8 0 mcl4k 4096 126 0 0 16 0 16 16 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 81 0 0 8 0 8 8 0 8 0 mtagpl 96 87 0 0 3 0 3 3 0 8 0 mbufpl 256 4518 0 0 282 0 282 282 0 8 0 bufpl 280 34311 0 28167 441 1 440 440 0 8 0 anonpl 32 15097 0 0 122 0 122 122 0 246 0 amapchunkpl 152 89592 0 88953 58 24 34 37 0 158 4 amappl16 200 11522 0 11387 66 41 25 31 0 8 7 amappl15 192 4 0 4 1 1 0 1 0 8 0 amappl14 184 118 0 106 1 0 1 1 0 8 0 amappl13 176 8 0 7 1 0 1 1 0 8 0 amappl12 168 3601 0 3570 3 1 2 2 0 8 0 amappl11 160 52 0 38 1 0 1 1 0 8 0 amappl10 152 5 0 5 1 1 0 1 0 8 0 amappl9 144 261 0 260 2 1 1 1 0 8 0 amappl8 136 23 0 20 1 0 1 1 0 8 0 amappl7 128 116 0 103 1 0 1 1 0 8 0 amappl6 120 214 0 211 1 0 1 1 0 8 0 amappl5 112 134 0 124 1 0 1 1 0 8 0 amappl4 104 324 0 302 1 0 1 1 0 8 0 amappl3 96 18289 0 18170 5 1 4 4 0 8 0 amappl2 88 734 0 667 2 0 2 2 0 8 0 amappl1 80 18580 0 17984 14 1 13 14 0 8 0 amappl 88 24836 0 24650 5 0 5 5 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 128 255 0 255 3 3 0 1 0 8 0 dma64 64 8 0 8 3 3 0 1 0 8 0 dma32 32 7 0 7 1 1 0 1 0 8 0 dma16 16 19 0 18 1 0 1 1 0 8 0 aobjpl 72 100 0 12 2 0 2 2 0 8 0 uaddrrnd 24 2896 0 2865 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2896 0 2865 1 0 1 1 0 8 0 vmmpekpl 168 23690 0 23635 3 0 3 3 0 8 0 vmmpepl 168 185737 0 183577 139 29 110 116 0 357 5 vmsppl 488 2895 0 2865 6 1 5 5 0 8 0 rwobjpl 80 54754 0 47675 154 2 152 152 0 8 2 pdppl 4096 5800 0 5730 106 34 72 84 0 8 2 pvpl 32 25446 0 0 205 0 205 205 0 265 0 pmappl 256 2895 0 2865 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 577 0 58 15 0 15 15 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff83785ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 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(ffffffff83889598) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83889598) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80002a31cb50,ffff800000069c00) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff83889598) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83889598) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80002a31ccb0,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_release_all(ffffffff83889598) at __mp_release_all+0x24 sys/kern/kern_lock.c:196 msleep_nsec(fffffd806f24a0e0,fffffd806f24a0e0,318,ffffffff833d1e30,3b9aca00) at msleep_nsec+0x1e1 sys/kern/kern_synch.c:-1 kqueue_sleep(fffffd806f24a0e0,ffff80002a31d2e0) at kqueue_sleep+0x10f sys/kern/kern_event.c:1608 kqueue_scan(ffff80002a31d0a0,8,ffff80002a31cfa0,ffff80002a31d2e0,ffff80002a2c87e0,ffff80002a31d24c) at kqueue_scan+0x21e sys/kern/kern_event.c:1663 dopselect(ffff80002a2c87e0,35,7403f8240a90,0,0,ffff80002a31d2e0,d49e6567790e5426,ffff80002a31d380) at dopselect+0x53e sys/kern/sys_generic.c:691 end trace frame: 0xffff80002a31d350, count: 0 ddb{0}> trace x86_ipi_db(ffffffff83785ff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:394 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(ffffffff83889598) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83889598) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80002a31cb50,ffff800000069c00) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff83889598) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:134 [inline] __mp_lock(ffffffff83889598) at __mp_lock+0x192 sys/kern/kern_lock.c:165 intr_handler(ffff80002a31ccb0,ffff800000079a80) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:559 Xintr_ioapic_edge23_untramp() at Xintr_ioapic_edge23_untramp+0x18f __mp_release_all(ffffffff83889598) at __mp_release_all+0x24 sys/kern/kern_lock.c:196 msleep_nsec(fffffd806f24a0e0,fffffd806f24a0e0,318,ffffffff833d1e30,3b9aca00) at msleep_nsec+0x1e1 sys/kern/kern_synch.c:-1 kqueue_sleep(fffffd806f24a0e0,ffff80002a31d2e0) at kqueue_sleep+0x10f sys/kern/kern_event.c:1608 kqueue_scan(ffff80002a31d0a0,8,ffff80002a31cfa0,ffff80002a31d2e0,ffff80002a2c87e0,ffff80002a31d24c) at kqueue_scan+0x21e sys/kern/kern_event.c:1663 dopselect(ffff80002a2c87e0,35,7403f8240a90,0,0,ffff80002a31d2e0,d49e6567790e5426,ffff80002a31d380) at dopselect+0x53e sys/kern/sys_generic.c:691 sys_pselect(ffff80002a2c87e0,ffff80002a31d430,ffff80002a31d380) at sys_pselect+0x25a sys/kern/sys_generic.c:589 syscall(ffff80002a31d430) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a31d430) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:748 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7403f8240a40, count: -17 ddb{0}> machine ddbcpu 1 Stopped at savectx+0xae: movl $0,%gs:0x688 savectx() at savectx+0xae end of kernel end trace frame: 0xd75ec16d360, count: 14 ddb{1}> trace savectx() at savectx+0xae end of kernel end trace frame: 0xd75ec16d360, count: -1