uvm_fault(0xfffffd806c6d5b88, 0x98, 0, 1) -> e fatal page fault in supervisor mode trap type 6 code 0 rip ffffffff82a9d098 cs 8 rflags 10246 cr2 98 cpl 0 rsp ffff80003c3dfe20 gsbase 0xffff8000299adff0 kgsbase 0x0 panic: trap type 6, code=0, pc=ffffffff82a9d098 Starting stack trace... panic(ffffffff83482cd4) at panic+0x1d0 sys/kern/subr_prf.c:229 kerntrap(ffff80003c3dfd70) at kerntrap+0x30b alltraps_kern_meltdown() at alltraps_kern_meltdown+0x7b dovutimens(ffff8000fffec7f0,fffffd800f8d62e8,ffff80003c3dff30) at dovutimens+0x368 sys/kern/vfs_syscalls.c:2771 sys_futimens(ffff8000fffec7f0,ffff80003c3e0080,ffff80003c3dffd0) at sys_futimens+0xb3 sys/kern/vfs_syscalls.c:2847 syscall(ffff80003c3e0080) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c3e0080) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xbdb8523e2b0, count: 250 End of stack trace. WA RNING: SPL NOT LOWERED ON TRAP EXIT 4 0 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 TID PID UID PRFLAGS PFLAGS CPU COMMAND *466676 42644 0 0 0 1 syz-executor 393635 2076 0 0x100003 0x80 0 getty proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x77352c82cf50, 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}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault(0xfffffd806c6d5b88, 0x98, 0, 1) -> e ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x77352c82cf50, count: -1 ddb{1}> show registers rdi 0 rsi 0 rbp 0xffff80003c3f22e0 rbx 0 rdx 0 rcx 0xffff8000fffeda18 rax 0x2a r8 0xffff80003c3f2210 r9 0x1 r10 0x5e861dca986804ff r11 0x29af04b010fe8f26 r12 0 r13 0 r14 0 r15 0 rip 0xffffffff82edc4c7 proc_trampoline+0xc7 cs 0x8 rflags 0x246 rsp 0xffff80003c3f2260 ss 0x10 proc_trampoline+0xc7: movl $0,%gs:0x688 ddb{1}> show proc PROC (syz-executor) tid=466676 pid=42644 tcnt=2 stat=onproc flags process=0 proc=0 runpri=50, usrpri=86, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000fffec7f0,0xffff8000fffedcc0 process=0xffff8000ffff0e88 user=0xffff80003c3ed000, vmspace=0xfffffd806c6d59a0 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND *42644 466676 26991 0 7 0 syz-executor 42644 191461 26991 0 3 0x4000080 fsleep syz-executor 81421 325708 98064 0 2 0 syz-executor 81421 262319 98064 0 3 0x4000080 fsleep syz-executor 41697 202972 27201 0 2 0xc80 syz-executor 41697 105009 27201 0 3 0x4000000 sbar syz-executor 53648 51693 23861 0 2 0 syz-executor 53648 269325 23861 0 3 0x4000080 fsleep syz-executor 38585 308718 45099 0 2 0 syz-executor 38585 432558 45099 0 3 0x4000080 fsleep syz-executor 38585 26976 45099 0 3 0x4000080 fsleep syz-executor 92855 120626 93221 0 2 0x1 syz-executor 92855 65049 93221 0 3 0x4000081 bell syz-executor 92855 179168 93221 0 3 0x4000081 fsleep syz-executor 93221 62347 57285 0 2 0xc82 syz-executor 45099 433769 57285 0 2 0xc82 syz-executor 99142 257897 57285 0 3 0x82 wait syz-executor 26991 197868 57285 0 2 0xc82 syz-executor 98064 123273 57285 0 2 0xc82 syz-executor 59202 505178 57285 0 2 0xc82 syz-executor 23861 143534 57285 0 2 0xc82 syz-executor 27201 185486 57285 0 2 0xc82 syz-executor 57285 344020 61608 0 3 0x82 kqread syz-executor 61608 387347 26408 0 3 0x10008a sigsusp ksh 26408 58018 46043 0 3 0x98 kqread sshd-session 46043 322264 26217 0 3 0x92 kqread sshd-session 2076 393635 1 0 7 0x100083 getty 26217 114843 1 0 3 0x88 kqread sshd 96368 246519 2816 74 2 0x1100092 pflogd 2816 522759 1 0 3 0x80 sbwait pflogd 21872 403903 96120 73 3 0x1100090 kqread syslogd 96120 182882 1 0 3 0x100082 sbwait syslogd 90102 453831 1 0 3 0x100080 kqread resolvd 4387 220421 77927 77 3 0x100092 kqread dhcpleased 41889 520367 77927 77 3 0x100092 kqread dhcpleased 77927 5775 1 0 3 0x80 kqread dhcpleased 98398 329125 0 0 2 0x40014200 smr 37389 88167 0 0 2 0x14200 zerothread 39583 494431 0 0 3 0x14200 aiodoned aiodoned 87158 439148 0 0 3 0x14200 syncer update 21803 192852 0 0 3 0x14200 cleaner cleaner 58028 2935 0 0 3 0x14200 reaper reaper 82062 168272 0 0 3 0x14200 pgdaemon pagedaemon 67589 502480 0 0 3 0x14200 bored viomb 22452 174125 0 0 3 0x40014200 acpi0 acpi0 12688 126525 0 0 3 0x40014200 idle1 57210 413072 0 0 3 0x14200 bored softnet1 73044 80395 0 0 2 0x14200 softnet0 5003 291209 0 0 2 0x14200 systqmp 44385 380430 0 0 3 0x14200 bored systq 50095 253620 0 0 2 0x14200 softclockmp 57842 434317 0 0 3 0x40014200 tmoslp softclock 68839 241625 0 0 3 0x40014200 idle0 1 303756 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{1}> show all locks Process 81421 (syz-executor) thread 0xffff8000fffed780 (325708) exclusive rwlock uobjlk r = 0 (0xfffffd806d4499c8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_write+0x419 sys/kern/kern_rwlock.c:320 #2 uvm_fault+0x1e5 sys/uvm/uvm_fault.c:649 #3 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #4 usertrap+0x430 sys/arch/amd64/amd64/trap.c:640 #5 recall_trap+0x8 shared rwlock vmmaplk r = 0 (0xfffffd806c6d54e8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 rw_do_enter_read+0x3e8 sys/kern/kern_rwlock.c:413 #2 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1880 #3 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:693 #4 uvm_fault+0x106 sys/uvm/uvm_fault.c:627 #5 upageflttrap+0xa9 sys/arch/amd64/amd64/trap.c:192 #6 usertrap+0x430 sys/arch/amd64/amd64/trap.c:640 #7 recall_trap+0x8 Process 41697 (syz-executor) thread 0xffff8000fffec7f0 (105009) exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83a942c0) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 syscall+0xaf4 mi_syscall sys/sys/syscall_mi.h:175 [inline] #1 syscall+0xaf4 sys/arch/amd64/amd64/trap.c:783 #2 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11087 12324K 12335K 166960K 12483 0 pcb 17 12K 12K 166960K 62 0 rtable 255 9K 9K 166960K 446 0 pf 40 19K 24K 166960K 148 0 ifaddr 43 7K 7K 166960K 60 0 ifgroup 52 2K 2K 166960K 84 0 sysctl 3 1K 9K 166960K 10 0 counters 70 37K 37K 166960K 94 0 ioctlops 0 0K 4K 166960K 1596 0 iov 0 0K 18K 166960K 21 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1303 82K 82K 166960K 1723 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 7 0 VM map 2 1K 1K 166960K 2 0 sem 11 0K 0K 166960K 13 0 dirhash 12 2K 3K 166960K 21 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 89K 166960K 530 0 sigio 0 0K 0K 166960K 6 0 proc 72 115K 164K 166960K 609 0 subproc 72 4K 4K 166960K 81 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 60 0 in_multi 99 7K 7K 166960K 119 0 ether_multi 1 0K 0K 166960K 4 0 mrt 0 0K 0K 166960K 17 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 61 281K 281K 166960K 61 0 exec 0 0K 1K 166960K 447 0 fusefs mount 1 32K 32K 166960K 1 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 252 164K 207K 166960K 6704 0 UVM aobj 12 2K 2K 166960K 12 0 pinsyscall 43 86K 106K 166960K 1763 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 12 0 NDP 12 0K 2K 166960K 39 0 temp 54 9080K 9163K 166960K 20995 0 kqueue 13 20K 31K 166960K 99 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 82 0 79 1 0 1 1 0 8 0 rtentry 176 126 0 13 7 1 6 6 0 8 0 unpcb 144 189 0 171 2 1 1 2 0 8 0 syncache 336 12 0 12 2 1 1 1 0 8 1 tcpqe 32 2 0 2 1 1 0 1 0 8 0 tcpcb 736 130 0 124 5 3 2 4 0 8 1 arp 136 20 0 2 1 0 1 1 0 8 0 inpcb 328 369 0 360 4 2 2 4 0 8 0 nd6 152 30 0 3 2 0 2 2 0 8 0 pkpcb 40 2 0 2 1 1 0 1 0 8 0 kcovpl 48 9 0 1 1 0 1 1 0 8 0 ppxss 1192 8 0 8 2 1 1 1 0 8 1 pppxif 1576 1 0 1 1 1 0 1 0 8 0 pfstscr 40 18 0 18 1 0 1 1 0 8 1 pffrag 232 13 0 3 1 0 1 1 0 482 0 pffrnode 88 13 0 3 1 0 1 1 0 8 0 pffrent 40 16 0 6 1 0 1 1 0 8 0 pfosfp 40 1428 0 1005 5 0 5 5 0 8 0 pfosfpen 112 1428 0 714 21 0 21 21 0 8 0 pfrktable 1344 6 0 4 2 1 1 1 0 8 0 pfsrclim 320 5 0 5 1 0 1 1 0 8 1 pfanchor 1288 13 0 0 2 0 2 2 0 8 0 pfstitem 24 39 0 3 1 0 1 1 0 8 0 pfstkey 128 79 0 43 2 0 2 2 0 8 0 pfstate 448 58 0 23 5 0 5 5 0 8 0 pfrule 1360 38 0 24 3 1 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 517 0 50 31 1 30 30 0 8 0 art_table 40 518 0 50 5 0 5 5 0 8 0 art_node 32 126 0 23 1 0 1 1 0 8 0 sysvmsgpl 40 5 0 1 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 10 0 1 1 0 1 1 0 8 0 shmpl 112 9 0 0 1 0 1 1 0 8 0 dirhash 1024 23 0 6 3 0 3 3 0 8 0 dino2pl 256 2271 0 801 93 0 93 93 0 8 0 ffsino 296 2271 0 801 114 0 114 114 0 8 0 nchpl 144 2909 0 1201 64 0 64 64 0 8 0 vnodes 216 2569 0 0 143 0 143 143 0 8 0 namei 1024 8950 0 8950 4 3 1 2 0 8 1 percpumem 16 62 0 12 1 0 1 1 0 8 0 pfiaddrpl 120 2 0 0 1 0 1 1 0 8 0 kstatmem 264 44 0 18 3 0 3 3 0 8 1 scxspl 216 9724 0 9724 3 2 1 2 1 8 1 plimitpl 152 60 0 42 1 0 1 1 0 8 0 sigapl 424 855 0 807 7 1 6 7 0 8 0 knotepl 120 354 0 0 11 0 11 11 0 8 0 kqueuepl 224 118 0 109 2 0 2 2 0 8 1 pipepl 344 147 0 120 3 0 3 3 0 8 0 fdescpl 528 838 0 806 3 0 3 3 0 8 0 filepl 160 3510 0 3283 11 0 11 11 0 8 1 lockfpl 104 144 0 140 1 0 1 1 0 8 0 lockfspl 48 65 0 61 1 0 1 1 0 8 0 sessionpl 144 39 0 29 1 0 1 1 0 8 0 pgrppl 48 51 0 33 1 0 1 1 0 8 0 ucredpl 104 360 0 347 1 0 1 1 0 8 0 zombiepl 144 972 0 970 1 0 1 1 0 8 0 processpl 1232 855 0 807 5 1 4 5 0 8 0 procpl 664 1426 0 1370 6 0 6 6 0 8 0 sosppl 176 1 0 1 1 0 1 1 0 8 1 sockpl 752 653 0 623 7 2 5 7 0 8 1 mcl64k 65536 21 0 0 3 0 3 3 0 8 0 mcl16k 16384 16 0 0 2 0 2 2 0 8 0 mcl12k 12288 5 0 0 1 0 1 1 0 8 0 mcl9k 9216 4 0 0 1 0 1 1 0 8 0 mcl8k 8192 8 0 0 1 0 1 1 0 8 0 mcl4k 4096 118 0 0 15 0 15 15 0 8 0 mcl2k 2048 20 0 0 3 0 3 3 0 8 0 mtagpl 96 42 0 0 2 0 2 2 0 8 0 mbufpl 256 248 0 0 16 0 16 16 0 8 0 bufpl 280 3309 0 106 229 0 229 229 0 8 0 anonpl 32 7869 0 0 64 0 64 64 0 246 0 amapchunkpl 152 21408 0 20823 34 7 27 28 0 158 4 amappl16 200 2785 0 2753 21 10 11 15 0 8 7 amappl15 192 9 0 9 1 1 0 1 0 8 0 amappl14 184 480 0 479 1 0 1 1 0 8 0 amappl13 176 151 0 139 1 0 1 1 0 8 0 amappl12 168 1099 0 1068 2 0 2 2 0 8 0 amappl11 160 19 0 19 2 2 0 1 0 8 0 amappl10 152 70 0 55 1 0 1 1 0 8 0 amappl9 144 266 0 266 1 1 0 1 0 8 0 amappl8 136 113 0 110 1 0 1 1 0 8 0 amappl7 128 185 0 172 1 0 1 1 0 8 0 amappl6 120 170 0 169 1 0 1 1 0 8 0 amappl5 112 155 0 144 1 0 1 1 0 8 0 amappl4 104 323 0 304 1 0 1 1 0 8 0 amappl3 96 4047 0 3925 4 0 4 4 0 8 0 amappl2 88 629 0 566 2 0 2 2 0 8 0 amappl1 80 14365 0 13748 21 4 17 20 0 8 1 amappl 88 5839 0 5659 5 0 5 5 0 92 0 uvmvnodes 80 110 0 0 3 0 3 3 0 8 0 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma1024 1024 6 0 5 1 0 1 1 0 8 0 dma256 256 7 0 7 2 1 1 1 0 8 1 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 11 0 0 1 0 1 1 0 8 0 uaddrrnd 24 838 0 806 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 838 0 806 1 0 1 1 0 8 0 vmmpekpl 168 9483 0 9440 3 0 3 3 0 8 0 vmmpepl 168 65366 0 63371 123 15 108 115 0 357 20 vmsppl 488 837 0 806 5 0 5 5 0 8 0 rwobjpl 80 21812 0 20731 32 2 30 31 0 8 3 pdppl 4096 1683 0 1612 107 36 71 83 0 8 0 pvpl 32 16607 0 0 135 1 134 134 0 265 0 pmappl 256 837 0 806 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 301 0 47 8 0 8 8 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff838c7ff0) 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(ffffffff83a93ac0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a93ac0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 intr_handler(ffff80002a291c20,ffff800000079600) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff83a93ac0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a93ac0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 __mp_acquire_count(ffffffff83a93ac0,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:369 ttread(ffff800000c04e00,ffff80002a292138,0) at ttread+0x7de ttysleep_nsec sys/kern/tty.c:2325 [inline] ttread(ffff800000c04e00,ffff80002a292138,0) at ttread+0x7de ttysleep sys/kern/tty.c:2315 [inline] ttread(ffff800000c04e00,ffff80002a292138,0) at ttread+0x7de sys/kern/tty.c:1587 spec_read(ffff80002a291f90) at spec_read+0x14b sys/kern/spec_vnops.c:215 VOP_READ(fffffd806fa17020,ffff80002a292138,0,fffffd80097fdf08) at VOP_READ+0x101 sys/kern/vfs_vops.c:227 vn_read(fffffd806f34f288,ffff80002a292138,0) at vn_read+0x17b sys/kern/vfs_vnops.c:375 dofilereadv(ffff8000ffffc2a0,0,ffff80002a292138,0,ffff80002a2921f0) at dofilereadv+0x25a sys/kern/sys_generic.c:252 end trace frame: 0xffff80002a2921c0, count: 0 ddb{0}> trace x86_ipi_db(ffffffff838c7ff0) 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(ffffffff83a93ac0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a93ac0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 intr_handler(ffff80002a291c20,ffff800000079600) at intr_handler+0xe9 sys/arch/amd64/amd64/intr.c:560 Xintr_ioapic_edge16_untramp() at Xintr_ioapic_edge16_untramp+0x18f __mp_lock(ffffffff83a93ac0) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:142 [inline] __mp_lock(ffffffff83a93ac0) at __mp_lock+0x192 sys/kern/kern_lock.c:173 __mp_acquire_count(ffffffff83a93ac0,1) at __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 sleep_finish(ffffffffffffffff,1) at sleep_finish+0x2d8 sys/kern/kern_synch.c:369 ttread(ffff800000c04e00,ffff80002a292138,0) at ttread+0x7de ttysleep_nsec sys/kern/tty.c:2325 [inline] ttread(ffff800000c04e00,ffff80002a292138,0) at ttread+0x7de ttysleep sys/kern/tty.c:2315 [inline] ttread(ffff800000c04e00,ffff80002a292138,0) at ttread+0x7de sys/kern/tty.c:1587 spec_read(ffff80002a291f90) at spec_read+0x14b sys/kern/spec_vnops.c:215 VOP_READ(fffffd806fa17020,ffff80002a292138,0,fffffd80097fdf08) at VOP_READ+0x101 sys/kern/vfs_vops.c:227 vn_read(fffffd806f34f288,ffff80002a292138,0) at vn_read+0x17b sys/kern/vfs_vnops.c:375 dofilereadv(ffff8000ffffc2a0,0,ffff80002a292138,0,ffff80002a2921f0) at dofilereadv+0x25a sys/kern/sys_generic.c:252 sys_read(ffff8000ffffc2a0,ffff80002a2922a0,ffff80002a2921f0) at sys_read+0xa2 sys/kern/sys_generic.c:172 syscall(ffff80002a2922a0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a2922a0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x750f1376f710, count: -17 ddb{0}> machine ddbcpu 1 Stopped at proc_trampoline+0xc7: movl $0,%gs:0x688 proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x77352c82cf50, count: 14 ddb{1}> trace proc_trampoline() at proc_trampoline+0xc7 end of kernel end trace frame: 0x77352c82cf50, count: -1