uvm_fault(0xffffffff83ab4180, 0xffff800027745ff8, 0, 1) -> d kernel: page fault trap, code=0 Stopped at ffs_indirtrunc+0x699: movq 0(%rax,%rbx,8),%rbx TID PID UID PRFLAGS PFLAGS CPU COMMAND 144334 67272 0 0x2 0 1 syz-executor *456822 52732 0 0x2 0 0 syz-executor ffs_indirtrunc(fffffd806c3ce3a0,fffffffffe8007f4,133040,ffffffffffffffff,0,ffff80002a342688) at ffs_indirtrunc+0x699 sys/ufs/ffs/ffs_inode.c:495 ffs_indirtrunc(fffffd806c3ce3a0,fffffffffebff7f3,133000,ffffffffffffffff,1,ffff80002a342788) at ffs_indirtrunc+0x730 sys/ufs/ffs/ffs_inode.c:499 ffs_indirtrunc(fffffd806c3ce3a0,ffffffffffbff7f2,132fe0,ffffffffffffffff,2,ffff80002a342988) at ffs_indirtrunc+0x730 sys/ufs/ffs/ffs_inode.c:499 ffs_truncate(fffffd806c3ce3a0,0,0,ffffffffffffffff) at ffs_truncate+0x103f sys/ufs/ffs/ffs_inode.c:297 ufs_inactive(ffff80002a342ae0) at ufs_inactive+0x202 sys/ufs/ufs/ufs_inode.c:84 VOP_INACTIVE(fffffd806c5a6b40,ffff80002a241ca0) at VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498 vput(fffffd806c5a6b40) at vput+0xe5 sys/kern/vfs_subr.c:789 VOP_REMOVE(fffffd806c5a6558,fffffd806c5a6b40,ffff80002a342c48) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a241ca0,ffffff9c,7d8bd1339470,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923 syscall(ffff80002a342dc0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a342dc0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d8bd1339920, count: 4 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault(0xffffffff83ab4180, 0xffff800027745ff8, 0, 1) -> d ddb{0}> trace ffs_indirtrunc(fffffd806c3ce3a0,fffffffffe8007f4,133040,ffffffffffffffff,0,ffff80002a342688) at ffs_indirtrunc+0x699 sys/ufs/ffs/ffs_inode.c:495 ffs_indirtrunc(fffffd806c3ce3a0,fffffffffebff7f3,133000,ffffffffffffffff,1,ffff80002a342788) at ffs_indirtrunc+0x730 sys/ufs/ffs/ffs_inode.c:499 ffs_indirtrunc(fffffd806c3ce3a0,ffffffffffbff7f2,132fe0,ffffffffffffffff,2,ffff80002a342988) at ffs_indirtrunc+0x730 sys/ufs/ffs/ffs_inode.c:499 ffs_truncate(fffffd806c3ce3a0,0,0,ffffffffffffffff) at ffs_truncate+0x103f sys/ufs/ffs/ffs_inode.c:297 ufs_inactive(ffff80002a342ae0) at ufs_inactive+0x202 sys/ufs/ufs/ufs_inode.c:84 VOP_INACTIVE(fffffd806c5a6b40,ffff80002a241ca0) at VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498 vput(fffffd806c5a6b40) at vput+0xe5 sys/kern/vfs_subr.c:789 VOP_REMOVE(fffffd806c5a6558,fffffd806c5a6b40,ffff80002a342c48) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a241ca0,ffffff9c,7d8bd1339470,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923 syscall(ffff80002a342dc0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a342dc0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d8bd1339920, count: -11 ddb{0}> show registers rdi 0x2 rsi 0x2 rbp 0xffff80002a342660 rbx 0x7ff rdx 0 rcx 0xffff80002a241ca0 rax 0xffff800027742000 r8 0xffffffffffffffff r9 0xffff80002a342688 r10 0x8c86f2110604e745 r11 0x953712d366fca2dd r12 0xfffffffffe7ffff6 r13 0x1 r14 0x2 r15 0xfffffd806c3ce3a0 rip 0xffffffff8221a499 ffs_indirtrunc+0x699 cs 0x8 rflags 0x10246 __ALIGN_SIZE+0xf246 rsp 0xffff80002a342570 ss 0x10 ffs_indirtrunc+0x699: movq 0(%rax,%rbx,8),%rbx ddb{0}> show proc PROC (syz-executor) tid=456822 pid=52732 tcnt=1 stat=onproc flags process=2 proc=0 runpri=32, usrpri=50, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff8000ffffd4c8,0xffff80002a241a18 process=0xffff8000ffff4e78 user=0xffff80002a33d000, vmspace=0xfffffd800b0631e8 estcpu=36, cpticks=41, pctcpu=0.11, user=0, sys=41, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 20120 122161 67272 0 3 0x80 fsleep syz-executor 20120 104341 67272 0 3 0x4000080 kqread syz-executor 29298 516670 76044 0 3 0x80 fsleep syz-executor 29298 81222 76044 0 3 0x4000080 fifor syz-executor 91066 261971 88941 0 3 0x80 fsleep syz-executor 91066 65879 88941 0 3 0x4000080 lockf syz-executor 31329 139204 38600 0 3 0x80 fsleep syz-executor 31329 56736 38600 0 3 0x4000080 kqpoll syz-executor 26767 98012 71933 0 3 0x80 fsleep syz-executor 26767 287036 71933 0 3 0x4000080 ttyin syz-executor 54220 35089 1 0 3 0x100083 ttyin getty 67272 144334 3781 0 7 0x2 syz-executor 78890 71751 3781 0 3 0x82 wait syz-executor *52732 456822 3781 0 7 0x2 syz-executor 71933 415859 3781 0 3 0x82 nanoslp syz-executor 88941 180269 3781 0 3 0x82 nanoslp syz-executor 38600 140762 3781 0 3 0x82 nanoslp syz-executor 76044 161980 3781 0 3 0x82 nanoslp syz-executor 3781 129797 1 0 3 0x82 wait syz-executor 50967 332371 49408 0 3 0x98 kqread sshd-session 49408 216713 1 0 3 0x92 kqread sshd-session 29925 327768 1 74 3 0x1100092 bpf pflogd 46876 474035 1 73 3 0x1100090 kqread syslogd 18757 283659 0 0 3 0x14200 bored smr 92460 236927 0 0 3 0x14200 pgzero zerothread 23391 349801 0 0 3 0x14200 aiodoned aiodoned 83674 135456 0 0 3 0x14200 syncer update 30815 354697 0 0 3 0x14200 cleaner cleaner 71988 197369 0 0 3 0x14200 reaper reaper 12758 502324 0 0 3 0x14200 pgdaemon pagedaemon 25911 155651 0 0 3 0x14200 bored viomb 17661 496108 0 0 3 0x40014200 acpi0 acpi0 31635 202568 0 0 3 0x40014200 idle1 27251 109042 0 0 3 0x14200 bored softnet1 25557 265874 0 0 3 0x14200 bored softnet0 63439 249224 0 0 3 0x14200 bored systqmp 2835 166490 0 0 3 0x14200 bored systq 15498 404222 0 0 3 0x14200 tmoslp softclockmp 69322 373475 0 0 3 0x40014200 tmoslp softclock 65456 395439 0 0 3 0x40014200 idle0 1 460944 0 0 3 0x82 wait init 0 0 -1 0 3 0x10010200 scheduler swapper ddb{0}> show all locks Process 52732 (syz-executor) thread 0xffff80002a241ca0 (456822) exclusive rrwlock inode r = 0 (0xfffffd806c3ce440) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2a2 sys/kern/vfs_subr.c:686 #6 ufs_ihashget+0x185 sys/ufs/ufs/ufs_ihash.c:98 #7 ffs_vget+0x8c sys/ufs/ffs/ffs_vfsops.c:1203 #8 ufs_lookup+0x1a36 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x98a sys/kern/vfs_lookup.c:567 #11 namei+0x7ca sys/kern/vfs_lookup.c:250 #12 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1887 #13 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #13 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8074efdb78) #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 rrw_enter+0xc6 sys/kern/kern_rwlock.c:621 #3 VOP_LOCK+0xbd sys/kern/vfs_vops.c:527 #4 vn_lock+0xa4 sys/kern/vfs_vnops.c:570 #5 vget+0x2a2 sys/kern/vfs_subr.c:686 #6 cache_lookup+0x351 sys/kern/vfs_cache.c:222 #7 ufs_lookup+0x1e3 sys/ufs/ufs/ufs_lookup.c:160 #8 VOP_LOOKUP+0x6e sys/kern/vfs_vops.c:85 #9 vfs_lookup+0x98a sys/kern/vfs_lookup.c:567 #10 namei+0x7ca sys/kern/vfs_lookup.c:250 #11 dounlinkat+0xc1 sys/kern/vfs_syscalls.c:1887 #12 syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] #12 syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 #13 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83991440) #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{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 11072 12108K 12464K 166960K 12839 0 pcb 17 14K 16K 166960K 197 0 rtable 152 15K 15K 166960K 490 0 pf 37 18K 21K 166960K 155 0 ifaddr 29 4K 7K 166960K 84 0 ifgroup 51 2K 2K 166960K 144 0 sysctl 3 1K 9K 166960K 11 0 counters 68 36K 37K 166960K 142 0 ioctlops 0 0K 4K 166960K 1699 0 iov 0 0K 16K 166960K 22 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1391 87K 88K 166960K 2081 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 11 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 26 0 dirhash 12 2K 2K 166960K 42 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 16 57K 93K 166960K 786 0 sigio 0 0K 0K 166960K 8 0 proc 21 33K 164K 166960K 619 0 subproc 72 4K 4K 166960K 72 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 58 0 in_multi 50 3K 7K 166960K 132 0 ether_multi 1 0K 0K 166960K 4 0 mrt 2 0K 0K 166960K 20 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 97 440K 440K 166960K 97 0 exec 0 0K 1K 166960K 459 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 162 108K 189K 166960K 8945 0 UVM aobj 9 4K 4K 166960K 9 0 pinsyscall 26 52K 106K 166960K 1981 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 33 0 NDP 11 0K 2K 166960K 57 0 temp 54 9082K 9156K 166960K 39611 0 kqueue 6 10K 28K 166960K 155 0 SYN cache 2 16K 16K 166960K 2 0 ddb{0}> 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 73 0 73 1 0 1 1 0 8 1 rtentry 176 139 0 88 6 1 5 6 0 8 0 unpcb 144 421 0 411 4 3 1 4 0 8 0 syncache 336 8 0 8 2 2 0 1 0 8 0 tcpqe 32 1 0 1 1 1 0 1 0 8 0 tcpcb 736 296 0 291 9 5 4 7 0 8 3 arp 136 27 0 18 1 0 1 1 0 8 0 inpcb 328 727 0 722 7 3 4 7 0 8 1 nd6 152 26 0 15 1 0 1 1 0 8 0 pkpcb 40 3 0 3 2 2 0 1 0 8 0 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 24 0 24 1 0 1 1 0 8 1 pppxif 1576 2 0 2 1 1 0 1 0 8 0 pfstscr 40 1 0 1 1 1 0 1 0 8 0 pffrag 232 6 0 0 1 0 1 1 0 482 0 pffrnode 88 6 0 0 1 0 1 1 0 8 0 pffrent 40 7 0 1 1 0 1 1 0 8 0 pfosfp 40 1429 0 1429 5 5 0 5 0 8 0 pfosfpen 112 1429 0 1429 21 12 9 21 0 8 9 pfrktable 1344 2 0 1 2 1 1 1 0 8 0 pfsrclim 320 1 0 1 1 1 0 1 0 8 0 pfanchor 1288 2 0 1 2 1 1 1 0 8 0 pftag 88 4 0 2 2 1 1 1 0 8 0 pfqueue 320 1 0 1 1 0 1 1 0 8 1 pfstitem 24 71 0 21 1 0 1 1 0 8 0 pfstkey 128 80 0 31 2 0 2 2 0 8 0 pfstate 448 73 0 26 7 0 7 7 0 8 0 pfrule 1360 34 0 27 2 1 1 2 0 8 0 rttmr 136 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 2 0 0 2 0 2 2 0 8 0 art_heap4 256 609 0 368 29 10 19 29 0 8 1 art_table 40 611 0 368 5 0 5 5 0 8 0 art_node 32 139 0 94 1 0 1 1 0 8 0 sysvmsgpl 40 8 0 5 1 0 1 1 0 8 0 semupl 112 1 0 1 1 0 1 1 0 8 1 semapl 112 24 0 14 1 0 1 1 0 8 0 shmpl 112 6 0 0 1 0 1 1 0 8 0 dirhash 1024 37 0 20 3 0 3 3 0 8 0 dino2pl 256 3018 0 1549 93 0 93 93 0 8 0 ffsino 296 3018 0 1549 114 0 114 114 0 8 0 nchpl 144 4092 0 2383 64 0 64 64 0 8 0 rtmask 32 5 0 5 3 2 1 1 0 8 1 vnodes 216 3456 0 0 192 0 192 192 0 8 0 namei 1024 14059 0 14059 3 1 2 2 0 8 2 percpumem 16 86 0 37 1 0 1 1 0 8 0 kstatmem 264 86 0 58 4 1 3 3 0 8 1 acpiwqpl 32 1 0 1 1 0 1 1 1 8 1 scsiplug 72 5 0 5 2 1 1 1 0 8 1 scxspl 216 20556 0 20556 11 10 1 8 1 8 1 plimitpl 152 180 0 165 1 0 1 1 0 8 0 sigapl 424 1112 0 1074 7 1 6 7 0 8 0 knotepl 120 726 0 0 22 0 22 22 0 8 0 kqueuepl 224 297 0 291 5 4 1 5 0 8 0 pipepl 344 188 0 161 6 3 3 6 0 8 0 fdescpl 528 1094 0 1072 3 0 3 3 0 8 0 filepl 160 6715 0 6515 18 5 13 17 0 8 3 lockfpl 104 423 0 421 2 1 1 2 0 8 0 lockfspl 48 187 0 186 1 0 1 1 0 8 0 sessionpl 144 51 0 44 1 0 1 1 0 8 0 pgrppl 48 62 0 47 1 0 1 1 0 8 0 ucredpl 104 1026 0 1016 1 0 1 1 0 8 0 zombiepl 144 1076 0 1074 1 0 1 1 0 8 0 processpl 1232 1112 0 1074 5 0 5 5 0 8 0 procpl 664 2237 0 2194 6 1 5 6 0 8 0 sosppl 176 7 0 7 1 1 0 1 0 8 0 sockpl 752 1240 0 1225 12 4 8 11 0 8 4 mcl64k 65536 8 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl12k 12288 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 114 0 0 15 0 15 15 0 8 0 mcl2k 2048 29 0 0 4 0 4 4 0 8 0 mtagpl 96 5 0 0 1 0 1 1 0 8 0 mbufpl 256 232 0 0 15 0 15 15 0 8 0 bufpl 280 8441 0 2311 438 0 438 438 0 8 0 anonpl 32 9795 0 0 79 0 79 79 0 246 0 amapchunkpl 152 29690 0 29290 31 6 25 28 0 158 5 amappl16 200 3677 0 3648 32 19 13 22 0 8 8 amappl15 192 11 0 11 1 1 0 1 0 8 0 amappl14 184 429 0 428 1 0 1 1 0 8 0 amappl13 176 139 0 134 1 0 1 1 0 8 0 amappl12 168 1372 0 1351 2 0 2 2 0 8 0 amappl11 160 3 0 3 1 1 0 1 0 8 0 amappl10 152 65 0 61 1 0 1 1 0 8 0 amappl9 144 269 0 269 2 2 0 1 0 8 0 amappl8 136 132 0 129 1 0 1 1 0 8 0 amappl7 128 231 0 224 1 0 1 1 0 8 0 amappl6 120 177 0 177 1 1 0 1 0 8 0 amappl5 112 115 0 110 1 0 1 1 0 8 0 amappl4 104 334 0 325 1 0 1 1 0 8 0 amappl3 96 5868 0 5785 4 0 4 4 0 8 0 amappl2 88 597 0 566 2 0 2 2 0 8 0 amappl1 80 14492 0 14155 17 3 14 17 0 8 2 amappl 88 7999 0 7869 5 0 5 5 0 92 0 uvmvnodes 80 128 0 0 3 0 3 3 0 8 0 dma65536 65536 1 0 1 1 0 1 1 0 8 1 dma4096 4096 1 0 1 1 1 0 1 0 8 0 dma2048 2048 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 2 1 1 0 8 1 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 8 0 0 1 0 1 1 0 8 0 uaddrrnd 24 1094 0 1072 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 1094 0 1072 1 0 1 1 0 8 0 vmmpekpl 168 11154 0 11116 3 0 3 3 0 8 0 vmmpepl 168 79962 0 78700 109 10 99 109 0 357 18 vmsppl 488 1093 0 1072 5 0 5 5 0 8 1 rwobjpl 80 24582 0 23906 32 5 27 31 0 8 1 pdppl 4096 2195 0 2144 115 56 59 87 0 8 8 pvpl 32 16118 0 0 130 0 130 130 0 265 0 pmappl 256 1093 0 1072 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 310 0 78 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace ffs_indirtrunc(fffffd806c3ce3a0,fffffffffe8007f4,133040,ffffffffffffffff,0,ffff80002a342688) at ffs_indirtrunc+0x699 sys/ufs/ffs/ffs_inode.c:495 ffs_indirtrunc(fffffd806c3ce3a0,fffffffffebff7f3,133000,ffffffffffffffff,1,ffff80002a342788) at ffs_indirtrunc+0x730 sys/ufs/ffs/ffs_inode.c:499 ffs_indirtrunc(fffffd806c3ce3a0,ffffffffffbff7f2,132fe0,ffffffffffffffff,2,ffff80002a342988) at ffs_indirtrunc+0x730 sys/ufs/ffs/ffs_inode.c:499 ffs_truncate(fffffd806c3ce3a0,0,0,ffffffffffffffff) at ffs_truncate+0x103f sys/ufs/ffs/ffs_inode.c:297 ufs_inactive(ffff80002a342ae0) at ufs_inactive+0x202 sys/ufs/ufs/ufs_inode.c:84 VOP_INACTIVE(fffffd806c5a6b40,ffff80002a241ca0) at VOP_INACTIVE+0x104 sys/kern/vfs_vops.c:498 vput(fffffd806c5a6b40) at vput+0xe5 sys/kern/vfs_subr.c:789 VOP_REMOVE(fffffd806c5a6558,fffffd806c5a6b40,ffff80002a342c48) at VOP_REMOVE+0x199 sys/kern/vfs_vops.c:336 dounlinkat(ffff80002a241ca0,ffffff9c,7d8bd1339470,0) at dounlinkat+0x1c4 sys/kern/vfs_syscalls.c:1923 syscall(ffff80002a342dc0) at syscall+0xb17 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80002a342dc0) at syscall+0xb17 sys/arch/amd64/amd64/trap.c:783 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x7d8bd1339920, count: -11 ddb{0}> machine ddbcpu 1