panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *334215 46671 60929 0x10 0x4000000 0 syz-executor 498975 58422 0 0x2 0 1 syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833dfad0) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806b736208,200000080000,200000081000) at uvm_fault_unwire_locked+0x4ee uvm_fault_wire(fffffd806b736208,200000080000,200000091000,3) at uvm_fault_wire+0x12d uvm_fault_unwire sys/uvm/uvm_fault.c:1744 [inline] uvm_fault_wire(fffffd806b736208,200000080000,200000091000,3) at uvm_fault_wire+0x12d sys/uvm/uvm_fault.c:1726 uvm_vslock_device(ffff8000fffee018,200000080040,10000,3,ffff80003c444b58) at uvm_vslock_device+0x112 sys/uvm/uvm_glue.c:169 physio(ffffffff8101c680,d02,8000,ffffffff8101ced0,ffff80003c444e38) at physio+0x257 sys/kern/kern_physio.c:139 spec_read(ffff80003c444c90) at spec_read+0x14b sys/kern/spec_vnops.c:215 VOP_READ(fffffd80618c8e60,ffff80003c444e38,0,fffffd80097fb478) at VOP_READ+0x101 sys/kern/vfs_vops.c:227 vn_read(fffffd8063565b00,ffff80003c444e38,1) at vn_read+0x17b sys/kern/vfs_vnops.c:369 dofilereadv(ffff8000fffee018,6,ffff80003c444e38,1,ffff80003c444ef0) at dofilereadv+0x25a sys/kern/sys_generic.c:252 sys_pread(ffff8000fffee018,ffff80003c444fa0,ffff80003c444ef0) at sys_pread+0xae sys/kern/vfs_syscalls.c:3307 syscall(ffff80003c444fa0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c444fa0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf4dd2f3a130, 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{0}> ddb{0}> set $lines = 0 ddb{0}> set $maxwidth = 0 ddb{0}> show panic *cpu0: uvm_fault_unwire_locked: address not in map ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833dfad0) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806b736208,200000080000,200000081000) at uvm_fault_unwire_locked+0x4ee uvm_fault_wire(fffffd806b736208,200000080000,200000091000,3) at uvm_fault_wire+0x12d uvm_fault_unwire sys/uvm/uvm_fault.c:1744 [inline] uvm_fault_wire(fffffd806b736208,200000080000,200000091000,3) at uvm_fault_wire+0x12d sys/uvm/uvm_fault.c:1726 uvm_vslock_device(ffff8000fffee018,200000080040,10000,3,ffff80003c444b58) at uvm_vslock_device+0x112 sys/uvm/uvm_glue.c:169 physio(ffffffff8101c680,d02,8000,ffffffff8101ced0,ffff80003c444e38) at physio+0x257 sys/kern/kern_physio.c:139 spec_read(ffff80003c444c90) at spec_read+0x14b sys/kern/spec_vnops.c:215 VOP_READ(fffffd80618c8e60,ffff80003c444e38,0,fffffd80097fb478) at VOP_READ+0x101 sys/kern/vfs_vops.c:227 vn_read(fffffd8063565b00,ffff80003c444e38,1) at vn_read+0x17b sys/kern/vfs_vnops.c:369 dofilereadv(ffff8000fffee018,6,ffff80003c444e38,1,ffff80003c444ef0) at dofilereadv+0x25a sys/kern/sys_generic.c:252 sys_pread(ffff8000fffee018,ffff80003c444fa0,ffff80003c444ef0) at sys_pread+0xae sys/kern/vfs_syscalls.c:3307 syscall(ffff80003c444fa0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c444fa0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf4dd2f3a130, count: -13 ddb{0}> show registers rdi 0 rsi 0x1 rbp 0xffff80003c4448a0 rbx 0xffffffff8384ce07 cpu_info_full_primary+0x2e07 rdx 0 rcx 0xffff8000fffee018 rax 0xffffffff8384bff0 cpu_info_full_primary+0x1ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xb2846b174e17f36d r11 0x4321018fda3223ff r12 0xffffffff8384cc08 cpu_info_full_primary+0x2c08 r13 0 r14 0 r15 0x1 rip 0xffffffff82d87095 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003c444890 ss 0 db_enter+0x25: addq $0x8,%rsp ddb{0}> show proc PROC (syz-executor) tid=334215 pid=46671 tcnt=4 stat=onproc flags process=10 proc=4000000 runpri=36, usrpri=50, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff80003c409778,0xffff8000fffef4e8 process=0xffff80002a3cc018 user=0xffff80003c440000, vmspace=0xfffffd806b736208 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{0}> ps PID TID PPID UID S FLAGS WAIT COMMAND 52741 489497 1012 0 2 0 syz-executor 79256 198820 78648 0 2 0 syz-executor 79256 208373 78648 0 3 0x4000080 ttyretype syz-executor 79256 410958 78648 0 3 0x4000080 fsleep syz-executor 46671 402642 20618 60929 3 0x10 vmmaplk syz-executor *46671 334215 20618 60929 7 0x4000010 syz-executor 46671 217308 20618 60929 3 0x4000090 fsleep syz-executor 46671 442917 20618 60929 2 0x4000010 syz-executor 17209 170577 58422 0 3 0x90 nanoslp syz-executor 17209 239207 58422 0 3 0x4000090 sbwait syz-executor 17209 220966 58422 0 3 0x4000090 fsleep syz-executor 17209 190852 58422 0 3 0x4000090 fsleep syz-executor 27092 228555 16176 0 3 0x82 nanoslp syz-executor 58422 498975 16176 0 7 0x2 syz-executor 20618 237702 16176 0 3 0x82 nanoslp syz-executor 78648 60481 16176 0 3 0x82 nanoslp syz-executor 7863 330676 16176 0 3 0x82 nanoslp syz-executor 31549 23087 16176 0 3 0x82 nanoslp syz-executor 42993 479712 16176 0 3 0x82 wait syz-executor 1012 470147 16176 0 2 0xc82 syz-executor 16176 11533 66502 0 3 0x82 kqread syz-executor 66502 446379 70102 0 3 0x10008a sigsusp ksh 70102 369001 11325 0 3 0x98 kqread sshd-session 11325 207665 2462 0 3 0x92 kqread sshd-session 32915 10874 1 0 3 0x100083 ttyopn getty 2462 43033 1 0 3 0x88 kqread sshd 87169 440149 25329 74 3 0x1100092 bpf pflogd 25329 6660 1 0 3 0x80 sbwait pflogd 79479 458944 12573 73 3 0x1100090 kqread syslogd 12573 103465 1 0 3 0x100082 sbwait syslogd 89150 351284 1 0 3 0x100080 kqread resolvd 98625 473730 49107 77 3 0x100092 kqread dhcpleased 82741 392913 49107 77 3 0x100092 kqread dhcpleased 49107 294768 1 0 3 0x80 kqread dhcpleased 64801 180458 0 0 3 0x14200 bored smr 89459 406420 0 0 2 0x14200 zerothread 22585 3060 0 0 3 0x14200 aiodoned aiodoned 68159 17033 0 0 3 0x14200 syncer update 37788 101417 0 0 3 0x14200 cleaner cleaner 30232 262855 0 0 3 0x14200 reaper reaper 54401 19429 0 0 3 0x14200 pgdaemon pagedaemon 49144 346576 0 0 3 0x14200 bored viomb 91316 450958 0 0 3 0x40014200 acpi0 acpi0 47336 94037 0 0 3 0x40014200 idle1 1575 82637 0 0 3 0x14200 bored softnet1 86178 97934 0 0 3 0x14200 bored softnet0 79882 512308 0 0 3 0x14200 smrbar systqmp 16875 98188 0 0 3 0x14200 bored systq 61992 100228 0 0 3 0x14200 tmoslp softclockmp 61053 443258 0 0 3 0x40014200 tmoslp softclock 45208 116876 0 0 3 0x40014200 idle0 1 351197 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{0}> show all locks Process 46671 (syz-executor) thread 0xffff8000fffee018 (334215) shared rwlock vmmaplk r = 0 (0xfffffd806b736308) #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 uvm_fault_wire+0x116 uvm_fault_unwire sys/uvm/uvm_fault.c:1743 [inline] #2 uvm_fault_wire+0x116 sys/uvm/uvm_fault.c:1726 #3 uvm_vslock_device+0x112 sys/uvm/uvm_glue.c:169 #4 physio+0x257 sys/kern/kern_physio.c:139 #5 spec_read+0x14b sys/kern/spec_vnops.c:215 #6 VOP_READ+0x101 sys/kern/vfs_vops.c:227 #7 vn_read+0x17b sys/kern/vfs_vnops.c:369 #8 dofilereadv+0x25a sys/kern/sys_generic.c:252 #9 sys_pread+0xae sys/kern/vfs_syscalls.c:3307 #10 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #10 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 #11 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83901248) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 __mp_acquire_count+0x58 sys/kern/kern_lock.c:-1 #2 sleep_finish+0x2d8 sys/kern/kern_synch.c:367 #3 rw_do_enter_read+0x309 sys/kern/kern_rwlock.c:-1 #4 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1902 #5 uvm_fault_check+0x4f sys/uvm/uvm_fault.c:699 #6 uvm_fault+0x106 sys/uvm/uvm_fault.c:633 #7 uvm_fault_wire+0x73 sys/uvm/uvm_fault.c:1723 #8 uvm_vslock_device+0x112 sys/uvm/uvm_glue.c:169 #9 physio+0x257 sys/kern/kern_physio.c:139 #10 spec_read+0x14b sys/kern/spec_vnops.c:215 #11 VOP_READ+0x101 sys/kern/vfs_vops.c:227 #12 vn_read+0x17b sys/kern/vfs_vnops.c:369 #13 dofilereadv+0x25a sys/kern/sys_generic.c:252 #14 sys_pread+0xae sys/kern/vfs_syscalls.c:3307 #15 syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] #15 syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 #16 Xsyscall+0x128 Process 79882 (systqmp) thread 0xffff8000ffffe000 (512308) shared rwlock systqmp r = 0 (0xffffffff837fe3c8) #0 witness_lock+0x5f1 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5f1 sys/kern/subr_witness.c:1160 #1 taskq_thread+0x12a sys/kern/kern_task.c:442 #2 proc_trampoline+0x10 ddb{0}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10201 11086K 11223K 166960K 11387 0 pcb 18 12K 12K 166960K 29 0 rtable 201 6K 7K 166960K 373 0 pf 36 18K 22K 166960K 64 0 ifaddr 40 6K 7K 166960K 54 0 ifgroup 53 2K 2K 166960K 66 0 sysctl 3 1K 9K 166960K 8 0 counters 70 37K 37K 166960K 80 0 ioctlops 0 0K 4K 166960K 1504 0 iov 0 0K 12K 166960K 3 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1406 88K 89K 166960K 1492 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 3 5K 5K 166960K 3 0 VM map 2 1K 1K 166960K 2 0 sem 6 0K 0K 166960K 6 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1692 195K 286K 166960K 12470 0 file desc 18 65K 93K 166960K 222 0 sigio 0 0K 0K 166960K 6 0 proc 73 131K 164K 166960K 536 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 11 0 in_multi 88 6K 7K 166960K 108 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 79 360K 360K 166960K 79 0 exec 0 0K 1K 166960K 381 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 267 164K 168K 166960K 3860 0 UVM aobj 6 2K 2K 166960K 6 0 pinsyscall 43 86K 103K 166960K 1346 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 10 0 NDP 12 0K 1K 166960K 32 0 temp 37 8650K 8718K 166960K 8452 0 kqueue 13 20K 24K 166960K 39 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 38 0 34 1 0 1 1 0 8 0 rtentry 176 113 0 25 6 0 6 6 0 8 1 unpcb 144 239 0 222 2 0 2 2 0 8 1 syncache 336 3 0 3 1 0 1 1 0 8 1 tcpcb 736 25 0 20 1 0 1 1 0 8 0 arp 136 18 0 2 1 0 1 1 0 8 0 inpcb 328 114 0 104 2 0 2 2 0 8 1 nd6 152 24 0 3 1 0 1 1 0 8 0 pkpcb 40 3 0 3 1 0 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1192 5 0 3 1 0 1 1 0 8 0 pppxif 1504 1 0 1 1 0 1 1 0 8 1 pffrag 232 2 0 0 1 0 1 1 0 482 0 pffrnode 88 2 0 0 1 0 1 1 0 8 0 pffrent 40 2 0 0 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 pfanchor 1288 1 0 0 1 0 1 1 0 8 0 pftag 88 1 0 0 1 0 1 1 0 8 0 pfstitem 24 24 0 0 1 0 1 1 0 8 0 pfstkey 128 24 0 0 1 0 1 1 0 8 0 pfstate 384 24 0 0 3 0 3 3 0 8 0 pfrule 1344 23 0 17 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 490 0 116 31 0 31 31 0 8 5 art_table 40 491 0 116 5 0 5 5 0 8 0 art_node 32 113 0 33 1 0 1 1 0 8 0 sysvmsgpl 40 2 0 2 1 0 1 1 0 8 1 semapl 112 4 0 0 1 0 1 1 0 8 0 shmpl 112 3 0 0 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1727 0 210 95 0 95 95 0 8 0 ffsino 296 1727 0 210 117 0 117 117 0 8 0 nchpl 144 2050 0 344 64 0 64 64 0 8 0 vnodes 216 1915 0 0 107 0 107 107 0 8 0 namei 1024 6301 0 6301 2 0 2 2 0 8 2 percpumem 16 55 0 5 1 0 1 1 0 8 0 kstatmem 264 34 0 8 2 0 2 2 0 8 0 scsiplug 72 1 0 1 1 0 1 1 0 8 1 scxspl 216 6512 0 6512 3 2 1 2 1 8 1 plimitpl 152 34 0 15 1 0 1 1 0 8 0 sigapl 424 530 0 482 7 0 7 7 0 8 1 knotepl 120 291 0 0 9 0 9 9 0 8 0 kqueuepl 224 57 0 46 1 0 1 1 0 8 0 pipepl 344 127 0 100 3 0 3 3 0 8 0 fdescpl 528 514 0 482 3 0 3 3 0 8 0 filepl 160 2242 0 2010 14 0 14 14 0 8 4 lockfpl 104 56 0 53 1 0 1 1 0 8 0 lockfspl 48 25 0 22 1 0 1 1 0 8 0 sessionpl 144 22 0 13 1 0 1 1 0 8 0 pgrppl 48 34 0 17 1 0 1 1 0 8 0 ucredpl 104 158 0 143 1 0 1 1 0 8 0 zombiepl 144 486 0 482 1 0 1 1 0 8 0 processpl 1232 530 0 482 5 0 5 5 0 8 1 procpl 664 701 0 645 6 0 6 6 0 8 0 sosppl 176 1 0 1 1 0 1 1 0 8 1 sockpl 752 396 0 365 7 0 7 7 0 8 3 mcl64k 65536 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 1 0 0 1 0 1 1 0 8 0 mcl8k 8192 2 0 0 1 0 1 1 0 8 0 mcl4k 4096 116 0 0 15 0 15 15 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 39 0 0 5 0 5 5 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 163 0 0 11 0 11 11 0 8 0 bufpl 280 2538 0 130 172 0 172 172 0 8 0 anonpl 32 5509 0 0 45 0 45 45 0 246 0 amapchunkpl 152 11214 0 10642 28 0 28 28 0 158 2 amappl16 200 2144 0 2121 5 2 3 5 0 8 1 amappl15 192 3 0 3 1 1 0 1 0 8 0 amappl14 184 8 0 8 1 1 0 1 0 8 0 amappl13 176 424 0 423 1 0 1 1 0 8 0 amappl12 168 870 0 828 3 0 3 3 0 8 0 amappl11 160 5 0 5 1 1 0 1 0 8 0 amappl10 152 49 0 35 1 0 1 1 0 8 0 amappl9 144 247 0 247 1 1 0 1 0 8 0 amappl8 136 75 0 73 1 0 1 1 0 8 0 amappl7 128 75 0 74 1 0 1 1 0 8 0 amappl6 120 285 0 271 1 0 1 1 0 8 0 amappl5 112 79 0 67 1 0 1 1 0 8 0 amappl4 104 419 0 388 1 0 1 1 0 8 0 amappl3 96 1801 0 1695 4 1 3 3 0 8 0 amappl2 88 623 0 548 2 0 2 2 0 8 0 amappl1 80 9380 0 8782 14 0 14 14 0 8 0 amappl 88 3118 0 2930 5 0 5 5 0 92 0 uvmvnodes 80 104 0 0 3 0 3 3 0 8 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 5 0 0 1 0 1 1 0 8 0 uaddrrnd 24 514 0 482 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 514 0 482 1 0 1 1 0 8 0 vmmpekpl 168 5983 0 5953 2 0 2 2 0 8 0 vmmpepl 168 40653 0 38669 88 0 88 88 0 357 1 vmsppl 488 513 0 482 5 0 5 5 0 8 0 rwobjpl 80 14501 0 13437 23 0 23 23 0 8 0 pdppl 4096 1035 0 964 97 26 71 85 0 8 0 pvpl 32 11666 0 0 95 0 95 95 0 265 0 pmappl 256 513 0 482 3 0 3 3 0 8 0 extentpl 40 45 0 27 1 0 1 1 0 8 0 phpool 112 270 0 28 8 0 8 8 0 8 0 ddb{0}> machine ddbcpu 0 Invalid cpu 0 ddb{0}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:438 panic(ffffffff833dfad0) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806b736208,200000080000,200000081000) at uvm_fault_unwire_locked+0x4ee uvm_fault_wire(fffffd806b736208,200000080000,200000091000,3) at uvm_fault_wire+0x12d uvm_fault_unwire sys/uvm/uvm_fault.c:1744 [inline] uvm_fault_wire(fffffd806b736208,200000080000,200000091000,3) at uvm_fault_wire+0x12d sys/uvm/uvm_fault.c:1726 uvm_vslock_device(ffff8000fffee018,200000080040,10000,3,ffff80003c444b58) at uvm_vslock_device+0x112 sys/uvm/uvm_glue.c:169 physio(ffffffff8101c680,d02,8000,ffffffff8101ced0,ffff80003c444e38) at physio+0x257 sys/kern/kern_physio.c:139 spec_read(ffff80003c444c90) at spec_read+0x14b sys/kern/spec_vnops.c:215 VOP_READ(fffffd80618c8e60,ffff80003c444e38,0,fffffd80097fb478) at VOP_READ+0x101 sys/kern/vfs_vops.c:227 vn_read(fffffd8063565b00,ffff80003c444e38,1) at vn_read+0x17b sys/kern/vfs_vnops.c:369 dofilereadv(ffff8000fffee018,6,ffff80003c444e38,1,ffff80003c444ef0) at dofilereadv+0x25a sys/kern/sys_generic.c:252 sys_pread(ffff8000fffee018,ffff80003c444fa0,ffff80003c444ef0) at sys_pread+0xae sys/kern/vfs_syscalls.c:3307 syscall(ffff80003c444fa0) at syscall+0xbd4 mi_syscall sys/sys/syscall_mi.h:176 [inline] syscall(ffff80003c444fa0) at syscall+0xbd4 sys/arch/amd64/amd64/trap.c:765 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0xf4dd2f3a130, count: -13 ddb{0}> machine ddbcpu 1