panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND * 68124 9757 0 0 0x4000000 1 syz-executor.3 255717 34143 0 0x14000 0x40000200 0K softclock db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8285e800) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd8069baa018,20a60000,20a70000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1663 uvm_fault_wire(fffffd8069baa018,20a60000,20a71000,3) at uvm_fault_wire+0xd7 uvm_fault_unwire sys/uvm/uvm_fault.c:1623 [inline] uvm_fault_wire(fffffd8069baa018,20a60000,20a71000,3) at uvm_fault_wire+0xd7 sys/uvm/uvm_fault.c:1605 uvm_vslock_device(ffff8000246e22c0,20a60100,10000,3,ffff80002afcd1a8) at uvm_vslock_device+0xe9 sys/uvm/uvm_glue.c:170 physio(ffffffff81e73bc0,d00,8000,ffffffff81e74240,ffff80002afcd488) at physio+0x22c sys/kern/kern_physio.c:140 spec_read(ffff80002afcd2e0) at spec_read+0xfa sys/kern/spec_vnops.c:215 VOP_READ(fffffd807e796110,ffff80002afcd488,0,fffffd807f7d6340) at VOP_READ+0xc3 sys/kern/vfs_vops.c:227 vn_read(fffffd806e4aa7c8,ffff80002afcd488,0) at vn_read+0x12a sys/kern/vfs_vnops.c:369 dofilereadv(ffff8000246e22c0,3,ffff80002afcd488,0,ffff80002afcd570) at dofilereadv+0x1a2 sys/kern/sys_generic.c:247 sys_read(ffff8000246e22c0,ffff80002afcd520,ffff80002afcd570) at sys_read+0x87 sys/kern/sys_generic.c:167 syscall(ffff80002afcd5f0) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002afcd5f0) at syscall+0x606 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x827c362b9a0, 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{1}> ddb{1}> set $lines = 0 ddb{1}> set $maxwidth = 0 ddb{1}> show panic *cpu1: uvm_fault_unwire_locked: address not in map ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8285e800) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd8069baa018,20a60000,20a70000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1663 uvm_fault_wire(fffffd8069baa018,20a60000,20a71000,3) at uvm_fault_wire+0xd7 uvm_fault_unwire sys/uvm/uvm_fault.c:1623 [inline] uvm_fault_wire(fffffd8069baa018,20a60000,20a71000,3) at uvm_fault_wire+0xd7 sys/uvm/uvm_fault.c:1605 uvm_vslock_device(ffff8000246e22c0,20a60100,10000,3,ffff80002afcd1a8) at uvm_vslock_device+0xe9 sys/uvm/uvm_glue.c:170 physio(ffffffff81e73bc0,d00,8000,ffffffff81e74240,ffff80002afcd488) at physio+0x22c sys/kern/kern_physio.c:140 spec_read(ffff80002afcd2e0) at spec_read+0xfa sys/kern/spec_vnops.c:215 VOP_READ(fffffd807e796110,ffff80002afcd488,0,fffffd807f7d6340) at VOP_READ+0xc3 sys/kern/vfs_vops.c:227 vn_read(fffffd806e4aa7c8,ffff80002afcd488,0) at vn_read+0x12a sys/kern/vfs_vnops.c:369 dofilereadv(ffff8000246e22c0,3,ffff80002afcd488,0,ffff80002afcd570) at dofilereadv+0x1a2 sys/kern/sys_generic.c:247 sys_read(ffff8000246e22c0,ffff80002afcd520,ffff80002afcd570) at sys_read+0x87 sys/kern/sys_generic.c:167 syscall(ffff80002afcd5f0) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002afcd5f0) at syscall+0x606 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x827c362b9a0, count: -13 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002afccf00 rbx 0xffff800020d59ba7 rdx 0 rcx 0xffff8000246e22c0 rax 0xffff800020d58ff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0xced92484787d22e0 r11 0x42c35aa40cbde887 r12 0xffff800020d599a8 r13 0 r14 0 r15 0x1 rip 0xffffffff811b9aac db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002afccef0 ss 0 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.3) tid=68124 pid=9757 tcnt=5 stat=onproc flags process=0 proc=4000000 runpri=32, usrpri=84, slppri=32, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff8000246e2018,0xffff8000211f5818 process=0xffff800021287258 user=0xffff80002afc8000, vmspace=0xfffffd8069baa018 estcpu=34, cpticks=12, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 19798 388704 27463 0 2 0 syz-executor.6 16950 293203 23788 0 2 0 syz-executor.4 93311 34231 59018 0 2 0 syz-executor.1 93311 433052 59018 0 3 0x4000080 fsleep syz-executor.1 93311 502937 59018 0 3 0x4000080 fsleep syz-executor.1 93311 336338 59018 0 3 0x4000080 fsleep syz-executor.1 75027 480669 90646 0 3 0x80 nanoslp syz-executor.5 75027 54313 90646 0 3 0x4000080 netcon syz-executor.5 75027 164751 90646 0 3 0x4000080 fsleep syz-executor.5 75027 43451 90646 0 3 0x4000080 fsleep syz-executor.5 61120 91832 20062 0 3 0x80 nanoslp syz-executor.7 61120 305183 20062 0 3 0x4000080 netcon syz-executor.7 61120 482836 20062 0 3 0x4000080 fsleep syz-executor.7 9757 121248 42448 0 2 0 syz-executor.3 9757 98717 42448 0 2 0x4000000 syz-executor.3 * 9757 68124 42448 0 7 0x4000000 syz-executor.3 9757 138303 42448 0 2 0x4000000 syz-executor.3 9757 93145 42448 0 2 0x4000000 syz-executor.3 59660 380878 51250 0 2 0x2 syz-executor.0 20062 62562 51250 0 3 0x82 nanoslp syz-executor.7 23788 461148 51250 0 3 0x82 nanoslp syz-executor.4 90646 456108 51250 0 2 0x482 syz-executor.5 83142 442136 1 0 3 0x100083 ttyin getty 81976 504055 0 0 3 0x14200 bored sosplice 39102 500352 0 0 3 0x14200 acct acct 27463 432313 51250 0 3 0x82 nanoslp syz-executor.6 19354 71206 51250 0 2 0x2 syz-executor.2 42448 109938 51250 0 3 0x82 nanoslp syz-executor.3 59018 217504 51250 0 3 0x82 nanoslp syz-executor.1 51250 203541 75813 0 3 0x2000082 wait syz-fuzzer 51250 208152 75813 0 3 0x6000082 nanoslp syz-fuzzer 51250 194386 75813 0 3 0x6000082 thrsleep syz-fuzzer 51250 135442 75813 0 3 0x6000082 wait syz-fuzzer 51250 48244 75813 0 3 0x6000082 thrsleep syz-fuzzer 51250 204390 75813 0 3 0x6000082 thrsleep syz-fuzzer 51250 351021 75813 0 3 0x6000082 wait syz-fuzzer 51250 106416 75813 0 3 0x6000082 wait syz-fuzzer 51250 212796 75813 0 3 0x6000082 thrsleep syz-fuzzer 51250 278256 75813 0 3 0x6000082 thrsleep syz-fuzzer 51250 82851 75813 0 3 0x6000082 kqread syz-fuzzer 51250 148827 75813 0 3 0x6000082 wait syz-fuzzer 51250 416054 75813 0 3 0x6000082 wait syz-fuzzer 51250 168688 75813 0 3 0x6000082 wait syz-fuzzer 51250 280845 75813 0 3 0x6000082 wait syz-fuzzer 75813 221178 41465 0 3 0x10008a sigsusp ksh 41465 332664 13770 0 3 0x9a kqread sshd 13770 283106 1 0 3 0x88 kqread sshd 84001 98054 88151 74 3 0x1100092 bpf pflogd 88151 513440 1 0 3 0x80 netio pflogd 46461 82890 47660 73 3 0x1100090 kqread syslogd 47660 480872 1 0 3 0x100082 netio syslogd 81434 266314 1 0 3 0x100080 kqread resolvd 35396 486496 85685 77 3 0x100092 kqread dhcpleased 48998 56308 85685 77 3 0x100092 kqread dhcpleased 85685 111246 1 0 3 0x80 kqread dhcpleased 45860 495947 0 0 3 0x14200 bored smr 13756 459862 0 0 2 0x14200 zerothread 87547 505486 0 0 3 0x14200 aiodoned aiodoned 17006 166526 0 0 3 0x14200 syncer update 47477 13315 0 0 3 0x14200 cleaner cleaner 96438 246052 0 0 3 0x14200 reaper reaper 42378 188163 0 0 3 0x14200 pgdaemon pagedaemon 93117 510238 0 0 3 0x14200 bored viomb 46193 415185 0 0 3 0x40014200 acpi0 acpi0 66967 435315 0 0 3 0x40014200 idle1 52071 461856 0 0 3 0x14200 bored softnet3 9496 227410 0 0 3 0x14200 bored softnet2 73908 382346 0 0 3 0x14200 bored softnet1 20460 182125 0 0 3 0x14200 bored softnet0 71365 491319 0 0 3 0x14200 bored systqmp 85074 355401 0 0 3 0x14200 bored systq 16460 282187 0 0 3 0x14200 tmoslp softclockmp 34143 255717 0 0 7 0x40014200 softclock 44029 314138 0 0 3 0x40014200 idle0 1 60874 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 0: exclusive mutex &uvm.pageqlock r = 0 (0xffffffff82c59840) #0 witness_lock+0x447 #1 mtx_enter_try+0x104 #2 mtx_enter+0x4f sys/kern/kern_lock.c:266 #3 uvm_anfree_list+0xa4 sys/uvm/uvm_anon.c:104 #4 amap_wipeout+0x1c1 sys/uvm/uvm_amap.c:504 #5 uvm_unmap_detach+0x7d sys/uvm/uvm_map.c:1366 #6 sys_munmap+0x22e sys/uvm/uvm_mmap.c:539 #7 syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] #7 syscall+0x606 sys/arch/amd64/amd64/trap.c:623 #8 Xsyscall+0x128 Process 9757 (syz-executor.3) thread 0xffff8000246e2018 (98717) exclusive kernel: protection fault trap, code=0 Faulted in DDB; continuing... ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10434 7031K 8684K 78643K 22331 0 pcb 13 13K 14K 78643K 250 0 rtable 239 7K 7K 78643K 551 0 pf 32 9K 10K 78643K 108 0 ifaddr 45 15K 16K 78643K 93 0 ifgroup 55 2K 2K 78643K 152 0 sysctl 4 1K 1K 78643K 4 0 counters 60 35K 36K 78643K 114 0 ioctlops 0 0K 4K 78643K 1581 0 iov 0 0K 24K 78643K 80 0 mount 1 1K 1K 78643K 1 0 log 0 0K 0K 78643K 4 0 vnodes 1575 98K 99K 78643K 4570 0 UFS quota 1 32K 32K 78643K 1 0 UFS mount 5 36K 36K 78643K 5 0 shm 3 5K 5K 78643K 23 0 VM map 2 1K 1K 78643K 2 0 sem 12 0K 1K 78643K 233 0 dirhash 12 2K 2K 78643K 12 0 ACPI 1697 195K 286K 78643K 12548 0 file desc 16 57K 85K 78643K 2118 0 sigio 0 0K 0K 78643K 41 0 proc 70 91K 115K 78643K 789 0 subproc 104 6K 6K 78643K 169 0 NFS srvsock 1 0K 0K 78643K 1 0 NFS daemon 1 16K 16K 78643K 1 0 ip_moptions 0 0K 0K 78643K 1296 0 in_multi 99 7K 7K 78643K 174 0 ether_multi 1 0K 0K 78643K 5 0 mrt 1 0K 0K 78643K 1 0 ISOFS mount 1 32K 32K 78643K 1 0 MSDOSFS mount 1 16K 16K 78643K 1 0 ttys 109 493K 493K 78643K 109 0 exec 0 0K 1K 78643K 869 0 pfkey data 0 0K 0K 78643K 2 0 tdb 3 0K 0K 78643K 3 0 pagedep 1 8K 8K 78643K 1 0 inodedep 1 32K 32K 78643K 1 0 newblk 1 0K 0K 78643K 1 0 VM swap 8 62K 64K 78643K 10 0 UVM amap 366 89K 90K 78643K 23242 0 UVM aobj 101 3K 3K 78643K 104 0 memdesc 1 4K 4K 78643K 1 0 crypto data 1 1K 1K 78643K 1 0 ip6_options 0 0K 0K 78643K 38 0 NDP 12 0K 1K 78643K 65 0 temp 74 5920K 6004K 78643K 37567 0 kqueue 13 20K 26K 78643K 165 0 SYN cache 2 16K 16K 78643K 2 0 ddb{1}> show all pools Name Size Requests Fail Releases Pgreq Pgrel Npage Hiwat Minpg Maxpg Idle plcache 128 22 0 0 1 0 1 1 0 8 0 rtpcb 120 83 0 80 1 0 1 1 0 8 0 rtentry 112 173 0 62 4 0 4 4 0 8 0 unpcb 144 1239 0 1224 12 11 1 6 0 8 0 syncache 304 19 0 19 5 5 0 1 0 8 0 tcpqe 32 93 0 93 3 3 0 1 0 8 0 tcpcb 808 641 0 622 20 15 5 8 0 8 1 arp 120 28 0 10 1 0 1 1 0 8 0 inpcb 368 1749 0 1725 35 29 6 14 0 8 2 nd6 136 43 0 18 1 0 1 1 0 8 0 pkpcb 40 40 0 40 1 1 0 1 0 8 0 kcovpl 48 13 0 5 1 0 1 1 0 8 0 ppxss 1256 11 0 11 2 2 0 1 0 8 0 pffrag 232 3 0 2 1 0 1 1 0 482 0 pffrnode 88 3 0 2 1 0 1 1 0 8 0 pffrent 40 9 0 8 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 pfstitem 24 94 0 57 1 0 1 1 0 8 0 pfstkey 128 94 0 57 2 0 2 2 0 8 0 pfstate 376 94 0 57 5 0 5 5 0 8 0 pfrule 1344 21 0 16 2 1 1 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 700 0 239 29 0 29 29 0 8 0 art_table 32 701 0 239 4 0 4 4 0 8 0 art_node 16 169 0 68 1 0 1 1 0 8 0 sysvmsgpl 40 1 0 0 1 0 1 1 0 8 0 semupl 112 2 0 2 1 1 0 1 0 8 0 semapl 112 226 0 216 1 0 1 1 0 8 0 shmpl 112 101 0 3 3 0 3 3 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 4462 0 3002 92 0 92 92 0 8 0 ffsino 272 4462 0 3002 98 0 98 98 0 8 0 nchpl 144 7602 0 5946 64 0 64 64 0 8 0 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 28335 0 28335 2 1 1 2 0 8 1 percpumem 16 70 0 27 1 0 1 1 0 8 0 vcpupl 2048 6 0 0 1 0 1 1 0 8 0 vmpool 696 16 0 10 2 1 1 1 0 8 0 kstatmem 264 78 0 54 2 0 2 2 0 8 0 scxspl 216 22327 0 22327 10 9 1 8 1 8 1 plimitpl 152 227 0 211 1 0 1 1 0 8 0 sigapl 424 2454 0 2404 10 4 6 8 0 8 0 futexpl 64 17037 0 17031 1 0 1 1 0 8 0 knotepl 120 258 0 0 7 0 7 7 0 8 0 kqueuepl 216 477 0 468 15 14 1 5 0 8 0 pipepl 320 670 0 642 17 14 3 8 0 8 0 fdescpl 496 2414 0 2385 5 0 5 5 0 8 0 filepl 152 18074 0 17688 35 19 16 23 0 8 1 lockfpl 104 1155 0 1153 5 3 2 2 0 8 1 lockfspl 48 447 0 445 1 0 1 1 0 8 0 sessionpl 144 30 0 13 1 0 1 1 0 8 0 pgrppl 48 286 0 269 1 0 1 1 0 8 0 ucredpl 104 2764 0 2752 1 0 1 1 0 8 0 zombiepl 144 2405 0 2404 1 0 1 1 0 8 0 processpl 1072 2454 0 2404 5 1 4 5 0 8 0 procpl 680 6153 0 6077 10 2 8 9 0 8 0 sosppl 168 21 0 18 2 1 1 1 0 8 0 sockpl 488 3111 0 3069 67 57 10 21 0 8 3 mcl64k 65536 10 0 0 2 0 2 2 0 8 0 mcl16k 16384 9 0 0 2 0 2 2 0 8 0 mcl12k 12288 7 0 0 1 0 1 1 0 8 0 mcl9k 9216 6 0 0 1 0 1 1 0 8 0 mcl8k 8192 72 0 0 9 0 9 9 0 8 0 mcl4k 4096 17 0 0 3 0 3 3 0 8 0 mcl2k2 2112 1 0 0 1 0 1 1 0 8 0 mcl2k 2048 308 0 0 39 0 39 39 0 8 0 mtagpl 96 271 0 0 7 0 7 7 0 8 0 mbufpl 256 481 0 0 26 0 26 26 0 8 0 bufpl 288 6866 0 542 452 0 452 452 0 8 0 anonpl 24 423936 0 410800 144 27 117 125 0 186 22 amapchunkpl 152 73575 0 72733 49 11 38 38 0 158 1 amappl16 200 11528 0 11071 58 24 34 44 0 8 7 amappl15 192 14 0 14 1 1 0 1 0 8 0 amappl14 184 195 0 179 2 1 1 2 0 8 0 amappl13 176 25 0 24 1 0 1 1 0 8 0 amappl12 168 3175 0 3144 3 1 2 2 0 8 0 amappl11 160 57 0 41 1 0 1 1 0 8 0 amappl10 152 38 0 27 1 0 1 1 0 8 0 amappl9 144 210 0 209 1 0 1 1 0 8 0 amappl8 136 294 0 222 3 0 3 3 0 8 0 amappl7 128 226 0 199 2 0 2 2 0 8 0 amappl6 120 349 0 340 1 0 1 1 0 8 0 amappl5 112 162 0 151 1 0 1 1 0 8 0 amappl4 104 501 0 471 2 1 1 2 0 8 0 amappl3 96 14323 0 14235 4 1 3 3 0 8 0 amappl2 88 2996 0 2920 4 2 2 4 0 8 0 amappl1 80 17341 0 16782 23 10 13 23 0 8 0 amappl 88 22593 0 22359 8 1 7 7 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 72 103 0 3 2 0 2 2 0 8 0 uaddrrnd 24 2430 0 2395 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 2430 0 2395 1 0 1 1 0 8 0 vmmpekpl 168 24660 0 24602 3 0 3 3 0 8 0 vmmpepl 168 171133 0 168739 170 40 130 134 0 357 15 vmsppl 464 2429 0 2395 6 1 5 5 0 8 0 rwobjpl 56 55209 0 47607 114 4 110 112 0 8 0 pdppl 4096 4868 0 4796 217 141 76 80 0 8 4 pvpl 32 985472 0 966690 341 102 239 339 0 265 69 pmappl 248 2429 0 2395 4 1 3 3 0 8 0 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 1046 0 192 25 0 25 25 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82bcdff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x32 kd_curproc sys/dev/kcov.c:590 [inline] __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x32 sys/dev/kcov.c:235 witness_lock(ffffffff82cfc0a8,8) at witness_lock+0x5d sys/kern/subr_witness.c:1140 __mp_acquire_count(ffffffff82cfbea0,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 msleep(ffffffff82d62100,ffffffff82c237d0,0,ffffffff8278871a,0) at msleep+0x164 softclock_thread(ffff800021169540) at softclock_thread+0xd0 sys/kern/kern_timeout.c:805 end trace frame: 0x0, count: 7 ddb{0}> trace x86_ipi_db(ffffffff82bcdff0) at x86_ipi_db+0x1e sys/arch/amd64/amd64/db_interface.c:393 x86_ipi_handler() at x86_ipi_handler+0xb7 sys/arch/amd64/amd64/ipi.c:106 Xresume_lapic_ipi() at Xresume_lapic_ipi+0x27 __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x32 kd_curproc sys/dev/kcov.c:590 [inline] __sanitizer_cov_trace_const_cmp4(0,0) at __sanitizer_cov_trace_const_cmp4+0x32 sys/dev/kcov.c:235 witness_lock(ffffffff82cfc0a8,8) at witness_lock+0x5d sys/kern/subr_witness.c:1140 __mp_acquire_count(ffffffff82cfbea0,1) at __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 msleep(ffffffff82d62100,ffffffff82c237d0,0,ffffffff8278871a,0) at msleep+0x164 softclock_thread(ffff800021169540) at softclock_thread+0xd0 sys/kern/kern_timeout.c:805 end trace frame: 0x0, count: -8 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x1c: addq $0x8,%rsp db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8285e800) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd8069baa018,20a60000,20a70000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1663 uvm_fault_wire(fffffd8069baa018,20a60000,20a71000,3) at uvm_fault_wire+0xd7 uvm_fault_unwire sys/uvm/uvm_fault.c:1623 [inline] uvm_fault_wire(fffffd8069baa018,20a60000,20a71000,3) at uvm_fault_wire+0xd7 sys/uvm/uvm_fault.c:1605 uvm_vslock_device(ffff8000246e22c0,20a60100,10000,3,ffff80002afcd1a8) at uvm_vslock_device+0xe9 sys/uvm/uvm_glue.c:170 physio(ffffffff81e73bc0,d00,8000,ffffffff81e74240,ffff80002afcd488) at physio+0x22c sys/kern/kern_physio.c:140 spec_read(ffff80002afcd2e0) at spec_read+0xfa sys/kern/spec_vnops.c:215 VOP_READ(fffffd807e796110,ffff80002afcd488,0,fffffd807f7d6340) at VOP_READ+0xc3 sys/kern/vfs_vops.c:227 vn_read(fffffd806e4aa7c8,ffff80002afcd488,0) at vn_read+0x12a sys/kern/vfs_vnops.c:369 dofilereadv(ffff8000246e22c0,3,ffff80002afcd488,0,ffff80002afcd570) at dofilereadv+0x1a2 sys/kern/sys_generic.c:247 sys_read(ffff8000246e22c0,ffff80002afcd520,ffff80002afcd570) at sys_read+0x87 sys/kern/sys_generic.c:167 syscall(ffff80002afcd5f0) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002afcd5f0) at syscall+0x606 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x827c362b9a0, count: 2 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff8285e800) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd8069baa018,20a60000,20a70000) at uvm_fault_unwire_locked+0x321 sys/uvm/uvm_fault.c:1663 uvm_fault_wire(fffffd8069baa018,20a60000,20a71000,3) at uvm_fault_wire+0xd7 uvm_fault_unwire sys/uvm/uvm_fault.c:1623 [inline] uvm_fault_wire(fffffd8069baa018,20a60000,20a71000,3) at uvm_fault_wire+0xd7 sys/uvm/uvm_fault.c:1605 uvm_vslock_device(ffff8000246e22c0,20a60100,10000,3,ffff80002afcd1a8) at uvm_vslock_device+0xe9 sys/uvm/uvm_glue.c:170 physio(ffffffff81e73bc0,d00,8000,ffffffff81e74240,ffff80002afcd488) at physio+0x22c sys/kern/kern_physio.c:140 spec_read(ffff80002afcd2e0) at spec_read+0xfa sys/kern/spec_vnops.c:215 VOP_READ(fffffd807e796110,ffff80002afcd488,0,fffffd807f7d6340) at VOP_READ+0xc3 sys/kern/vfs_vops.c:227 vn_read(fffffd806e4aa7c8,ffff80002afcd488,0) at vn_read+0x12a sys/kern/vfs_vnops.c:369 dofilereadv(ffff8000246e22c0,3,ffff80002afcd488,0,ffff80002afcd570) at dofilereadv+0x1a2 sys/kern/sys_generic.c:247 sys_read(ffff8000246e22c0,ffff80002afcd520,ffff80002afcd570) at sys_read+0x87 sys/kern/sys_generic.c:167 syscall(ffff80002afcd5f0) at syscall+0x606 mi_syscall sys/sys/syscall_mi.h:110 [inline] syscall(ffff80002afcd5f0) at syscall+0x606 sys/arch/amd64/amd64/trap.c:623 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x827c362b9a0, count: -13