panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0x25: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND 360979 61878 0 0 0 0 syz-executor *145351 61878 0 0 0x4000000 1K syz-executor db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830bbf6c) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806cdb9c58,20000000,20011000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd806cdb9c58,20000000,20011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1623 kern_sysctl(ffff8000372901a4,5,20000100,ffff8000372901d8,0,37,cb9e0486c29f2e34) at kern_sysctl+0x500 sysctl_vsunlock sys/kern/kern_sysctl.c:209 [inline] kern_sysctl(ffff8000372901a4,5,20000100,ffff8000372901d8,0,37,cb9e0486c29f2e34) at kern_sysctl+0x500 sys/kern/kern_sysctl.c:508 sys_sysctl(ffff800032b85c08,ffff800037290310,ffff800037290260) at sys_sysctl+0x425 syscall(ffff800037290310) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800037290310) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8b60b953570, count: 7 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+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830bbf6c) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806cdb9c58,20000000,20011000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd806cdb9c58,20000000,20011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1623 kern_sysctl(ffff8000372901a4,5,20000100,ffff8000372901d8,0,37,cb9e0486c29f2e34) at kern_sysctl+0x500 sysctl_vsunlock sys/kern/kern_sysctl.c:209 [inline] kern_sysctl(ffff8000372901a4,5,20000100,ffff8000372901d8,0,37,cb9e0486c29f2e34) at kern_sysctl+0x500 sys/kern/kern_sysctl.c:508 sys_sysctl(ffff800032b85c08,ffff800037290310,ffff800037290260) at sys_sysctl+0x425 syscall(ffff800037290310) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800037290310) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8b60b953570, count: -8 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80003728fe50 rbx 0xffff800029b7cdbf rdx 0 rcx 0xffff800032b85c08 rax 0xffff800029b7bff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x25373e0bcba47fbc r11 0x8c34584836a28bc3 r12 0xffff800029b7cbc0 r13 0 r14 0 r15 0x1 rip 0xffffffff82026195 db_enter+0x25 cs 0x8 rflags 0x246 rsp 0xffff80003728fe40 ss 0x10 db_enter+0x25: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor) tid=145351 pid=61878 tcnt=5 stat=onproc flags process=0 proc=4000000 runpri=36, usrpri=50, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 scnt=0 ecnt=0 forw=0xffffffffffffffff, list=0xffff800032b84030,0xffff800032b84a60 process=0xffff8000fffe8918 user=0xffff80003728b000, vmspace=0xfffffd806cdb9c58 estcpu=36, cpticks=1, pctcpu=0.0, user=0, sys=1, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 61878 360979 72806 0 7 0 syz-executor *61878 145351 72806 0 7 0x4000000 syz-executor 61878 161487 72806 0 2 0x4000000 syz-executor 61878 386420 72806 0 2 0x4000000 syz-executor 61878 249713 72806 0 2 0x4000000 syz-executor 69450 441471 6944 0 2 0 syz-executor 69450 413243 6944 0 3 0x4000080 fsleep syz-executor 24693 283036 62380 -1 2 0x10 syz-executor 24693 18894 62380 -1 3 0x4000090 fsleep syz-executor 24693 45849 62380 -1 2 0x4000010 syz-executor 25985 473643 23599 0 2 0 syz-executor 25985 410014 23599 0 3 0x4000080 ttyin syz-executor 78706 120737 15109 0 2 0 syz-executor 78706 495368 15109 0 3 0x4000080 pipewr syz-executor 57342 505948 61332 0 2 0 syz-executor 57342 22987 61332 0 3 0x4000080 fsleep syz-executor 84853 269514 59768 0 2 0 syz-executor 84853 62260 59768 0 3 0x4000080 fsleep syz-executor 75586 253144 85890 0 3 0x80 nanoslp syz-executor 75586 472207 85890 0 3 0x4000080 dtread syz-executor 75586 62499 85890 0 3 0x4000080 fsleep syz-executor 62089 449169 0 0 3 0x14280 nfsidl nfsio 26818 472194 0 0 3 0x14280 nfsidl nfsio 59374 98881 0 0 3 0x14280 nfsidl nfsio 58199 401429 0 0 3 0x14280 nfsidl nfsio 78025 40943 0 0 3 0x14280 nfsidl nfsio 22116 115660 0 0 3 0x14280 nfsidl nfsio 80378 458478 0 0 3 0x14280 nfsidl nfsio 46564 426142 0 0 3 0x14280 nfsidl nfsio 59511 16883 0 0 3 0x14280 nfsidl nfsio 39075 377557 0 0 3 0x14280 nfsidl nfsio 8449 453397 0 0 3 0x14280 nfsidl nfsio 46218 522852 0 0 3 0x14280 nfsidl nfsio 42662 149426 0 0 3 0x14280 nfsidl nfsio 64748 296605 0 0 3 0x14280 nfsidl nfsio 86599 276491 0 0 3 0x14280 nfsidl nfsio 59340 130243 0 0 3 0x14280 nfsidl nfsio 68457 36927 0 0 3 0x14280 nfsidl nfsio 49489 77846 0 0 3 0x14280 nfsidl nfsio 93337 157453 0 0 3 0x14280 nfsidl nfsio 32081 373267 0 0 3 0x14280 nfsidl nfsio 15948 235487 19421 0 3 0x82 netio sshd-session 79337 297365 0 0 3 0x14200 bored sosplice 15109 206104 32158 0 3 0x82 nanoslp syz-executor 61332 270696 32158 0 3 0x82 nanoslp syz-executor 85890 498645 32158 0 3 0x82 nanoslp syz-executor 23599 437725 32158 0 3 0x82 nanoslp syz-executor 72806 481405 32158 0 3 0x82 nanoslp syz-executor 62380 498487 32158 0 3 0x82 nanoslp syz-executor 6944 518393 32158 0 3 0x82 nanoslp syz-executor 59768 401070 32158 0 3 0x82 nanoslp syz-executor 32158 505106 77791 0 2 0x2 syz-executor 77791 322653 64146 0 3 0x10008a sigsusp ksh 64146 311330 4893 0 3 0x98 kqread sshd-session 4893 73459 19421 0 3 0x92 kqread sshd-session 26154 233908 1 0 3 0x100083 ttyin getty 19421 142802 1 0 3 0x88 kqread sshd 63228 519044 78281 74 3 0x1100092 bpf pflogd 78281 329470 1 0 3 0x80 sbwait pflogd 36969 70901 38659 73 3 0x1100090 kqread syslogd 38659 396271 1 0 3 0x100082 sbwait syslogd 46165 354876 1 0 3 0x100080 kqread resolvd 421 369975 42813 77 3 0x100092 kqread dhcpleased 11654 191866 42813 77 3 0x100092 kqread dhcpleased 42813 452251 1 0 3 0x80 kqread dhcpleased 62822 53835 0 0 3 0x14200 bored smr 40747 407368 0 0 2 0x14200 zerothread 77562 343349 0 0 3 0x14200 aiodoned aiodoned 69515 328121 0 0 3 0x14200 syncer update 28697 45488 0 0 3 0x14200 cleaner cleaner 81012 3391 0 0 3 0x14200 reaper reaper 76747 456150 0 0 3 0x14200 pgdaemon pagedaemon 54805 430763 0 0 3 0x14200 bored viomb 49937 105714 0 0 3 0x40014200 acpi0 acpi0 28318 508325 0 0 3 0x40014200 idle1 53727 454727 0 0 3 0x14200 bored softnet3 4516 200622 0 0 3 0x14200 bored softnet2 87649 90347 0 0 3 0x14200 bored softnet1 63402 65622 0 0 3 0x14200 bored softnet0 58064 155870 0 0 3 0x14200 bored systqmp 44885 431819 0 0 3 0x14200 bored systq 25254 516404 0 0 3 0x14200 tmoslp softclockmp 95517 195478 0 0 3 0x40014200 tmoslp softclock 89305 9630 0 0 3 0x40014200 idle0 1 518414 0 0 3 0x82 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks Process 61878 (syz-executor) thread 0xffff800032b85c08 (145351) shared rwlock vmmaplk r = 0 (0xfffffd806cdb9d50) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 uvm_fault_unwire+0x3e sys/uvm/uvm_fault.c:1622 #2 kern_sysctl+0x500 sysctl_vsunlock sys/kern/kern_sysctl.c:209 [inline] #2 kern_sysctl+0x500 sys/kern/kern_sysctl.c:508 #3 sys_sysctl+0x425 #4 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #4 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff83620e38) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 __mp_acquire_count+0x58 #2 mi_switch+0x4b7 sys/kern/sched_bsd.c:441 #3 sleep_finish+0x2a6 sys/kern/kern_synch.c:423 #4 rw_enter+0x348 sys/kern/kern_rwlock.c:285 #5 uvmfault_lookup+0x122 sys/uvm/uvm_fault.c:1785 #6 uvm_fault_check+0x47 sys/uvm/uvm_fault.c:672 #7 uvm_fault+0x112 sys/uvm/uvm_fault.c:600 #8 uvm_fault_wire+0x73 sys/uvm/uvm_fault.c:1602 #9 sysctl_vslock+0x109 sys/kern/kern_sysctl.c:191 #10 kern_sysctl+0x1ad sys/kern/kern_sysctl.c:504 #11 sys_sysctl+0x425 #12 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #12 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #13 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff8342f530) #0 witness_lock+0x5bb stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x5bb sys/kern/subr_witness.c:1155 #1 rw_enter+0x41b sys/kern/kern_rwlock.c:309 #2 sysctl_vslock+0x45 sys/kern/kern_sysctl.c:181 #3 kern_sysctl+0x1ad sys/kern/kern_sysctl.c:504 #4 sys_sysctl+0x425 #5 syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] #5 syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 #6 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10216 11253K 11500K 166960K 11660 0 pcb 18 14K 16K 166960K 211 0 rtable 222 7K 7K 166960K 387 0 pf 39 18K 18K 166960K 60 0 ifaddr 42 7K 7K 166960K 54 0 ifgroup 64 2K 2K 166960K 73 0 sysctl 2 0K 0K 166960K 2 0 counters 68 36K 36K 166960K 74 0 ioctlops 0 0K 4K 166960K 1547 0 iov 0 0K 28K 166960K 55 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1371 86K 87K 166960K 1610 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 5K 166960K 10 0 VM map 2 1K 1K 166960K 2 0 sem 12 0K 0K 166960K 22 0 dirhash 12 2K 2K 166960K 18 0 ACPI 1690 195K 286K 166960K 12468 0 file desc 18 65K 93K 166960K 479 0 sigio 0 0K 0K 166960K 12 0 proc 72 91K 128K 166960K 551 0 subproc 104 6K 6K 166960K 104 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 ip_moptions 0 0K 0K 166960K 36 0 in_multi 88 6K 7K 166960K 116 0 ether_multi 1 0K 0K 166960K 2 0 mrt 0 0K 0K 166960K 1 0 ISOFS mount 1 32K 32K 166960K 1 0 MSDOSFS mount 1 16K 16K 166960K 1 0 ttys 67 307K 307K 166960K 67 0 exec 0 0K 1K 166960K 399 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 257 78K 78K 166960K 6157 0 UVM aobj 11 4K 4K 166960K 13 0 pinsyscall 45 90K 104K 166960K 1603 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 ip6_options 0 0K 0K 166960K 86 0 NDP 14 0K 2K 166960K 35 0 temp 47 6817K 6888K 166960K 10976 0 kqueue 14 22K 28K 166960K 87 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 24 0 0 1 0 1 1 0 8 0 rtpcb 120 56 0 53 1 0 1 1 0 8 0 rtentry 112 114 0 13 4 0 4 4 0 8 0 unpcb 144 699 0 679 6 5 1 6 0 8 0 syncache 336 8 0 8 3 2 1 1 0 8 1 tcpqe 32 2 0 2 2 1 1 1 0 8 1 tcpcb 808 170 0 161 8 6 2 8 0 8 0 arp 120 18 0 2 1 0 1 1 0 8 0 inpcb 336 558 0 542 8 6 2 7 0 8 0 nd6 136 27 0 4 1 0 1 1 0 8 0 pkpcb 40 3 0 3 2 1 1 1 0 8 1 kcovpl 48 8 0 0 1 0 1 1 0 8 0 ppxss 1168 2 0 2 2 1 1 1 0 8 1 pffrag 232 9 0 6 2 1 1 1 0 482 0 pffrnode 88 9 0 6 2 1 1 1 0 8 0 pffrent 40 101 0 98 2 1 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 44 0 4 1 0 1 1 0 8 0 pfstkey 128 44 0 4 2 0 2 2 0 8 0 pfstate 376 44 0 4 5 0 5 5 0 8 0 pfrule 1344 21 0 15 2 0 2 2 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 458 0 46 29 2 27 29 0 8 0 art_table 32 459 0 46 4 0 4 4 0 8 0 art_node 16 113 0 21 1 0 1 1 0 8 0 sysvmsgpl 40 4 0 2 1 0 1 1 0 8 0 semupl 112 1 0 1 1 1 0 1 0 8 0 semapl 112 20 0 10 1 0 1 1 0 8 0 shmpl 112 10 0 2 1 0 1 1 0 8 0 dirhash 1024 21 0 4 3 0 3 3 0 8 0 dino2pl 256 2170 0 671 95 0 95 95 0 8 0 ffsino 272 2170 0 671 101 0 101 101 0 8 0 nchpl 144 2912 0 2382 63 40 23 63 0 8 0 uvmvnodes 80 2411 0 0 50 0 50 50 0 8 0 vnodes 216 2411 0 0 134 0 134 134 0 8 0 namei 1024 9627 0 9627 2 1 1 1 0 8 1 percpumem 16 51 0 3 1 0 1 1 0 8 0 kstatmem 264 34 0 6 2 0 2 2 0 8 0 scsiplug 72 3 0 3 1 1 0 1 0 8 0 scxspl 216 8395 0 8395 10 2 8 8 1 8 8 plimitpl 152 245 0 227 1 0 1 1 0 8 0 sigapl 424 812 0 740 10 1 9 9 0 8 0 futexpl 64 5333 0 5328 1 0 1 1 0 8 0 knotepl 120 317 0 0 10 0 10 10 0 8 0 kqueuepl 216 111 0 101 1 0 1 1 0 8 0 pipepl 320 243 0 214 8 5 3 8 0 8 0 fdescpl 496 773 0 740 5 0 5 5 0 8 0 filepl 152 4657 0 4390 21 10 11 21 0 8 0 lockfpl 104 240 0 238 1 0 1 1 0 8 0 lockfspl 48 49 0 47 1 0 1 1 0 8 0 sessionpl 144 27 0 17 1 0 1 1 0 8 0 pgrppl 48 36 0 18 1 0 1 1 0 8 0 ucredpl 104 481 0 467 1 0 1 1 0 8 0 zombiepl 144 740 0 740 2 1 1 1 0 8 1 processpl 1160 812 0 740 7 1 6 6 0 8 0 procpl 648 1412 0 1327 9 1 8 8 0 8 0 srpgc 96 2 0 2 1 1 0 1 0 8 0 sosppl 168 3 0 3 2 2 0 1 0 8 0 sockpl 664 1320 0 1281 16 12 4 14 0 8 0 mcl64k 65536 5 0 0 1 0 1 1 0 8 0 mcl16k 16384 2 0 0 1 0 1 1 0 8 0 mcl9k 9216 2 0 0 1 0 1 1 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 137 0 0 18 0 18 18 0 8 0 mcl2k 2048 20 0 0 3 0 3 3 0 8 0 mtagpl 96 74 0 0 2 0 2 2 0 8 0 mbufpl 256 353 0 0 22 0 22 22 0 8 0 bufpl 280 2782 0 98 192 0 192 192 0 8 0 anonpl 24 179909 0 175378 50 22 28 46 0 185 0 amapchunkpl 152 19670 0 19104 25 3 22 22 0 158 0 amappl16 200 4674 0 4627 14 11 3 14 0 8 0 amappl15 192 9 0 9 1 1 0 1 0 8 0 amappl14 184 132 0 119 1 0 1 1 0 8 0 amappl13 176 6 0 6 1 1 0 1 0 8 0 amappl12 168 1431 0 1398 3 1 2 2 0 8 0 amappl11 160 58 0 44 1 0 1 1 0 8 0 amappl10 152 9 0 9 1 1 0 1 0 8 0 amappl9 144 179 0 179 1 1 0 1 0 8 0 amappl8 136 27 0 24 1 0 1 1 0 8 0 amappl7 128 117 0 103 1 0 1 1 0 8 0 amappl6 120 168 0 167 1 0 1 1 0 8 0 amappl5 112 227 0 213 1 0 1 1 0 8 0 amappl4 104 332 0 314 1 0 1 1 0 8 0 amappl3 96 3645 0 3544 3 0 3 3 0 8 0 amappl2 88 1086 0 994 3 0 3 3 0 8 0 amappl1 80 9880 0 9230 17 1 16 16 0 8 0 amappl 88 5710 0 5522 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 128 254 0 254 2 2 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 12 0 2 1 0 1 1 0 8 0 uaddrrnd 24 773 0 740 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 773 0 740 1 0 1 1 0 8 0 vmmpekpl 168 8210 0 8171 3 0 3 3 0 8 0 vmmpepl 168 56679 0 54610 108 14 94 94 0 357 3 vmsppl 448 772 0 740 6 2 4 5 0 8 0 rwobjpl 56 22297 0 18821 51 1 50 50 0 8 0 pdppl 4096 1553 0 1480 115 42 73 85 0 8 0 pvpl 32 14516 0 0 118 0 118 118 0 265 0 pmappl 248 772 0 740 3 0 3 3 0 8 0 extentpl 40 55 0 38 1 0 1 1 0 8 0 phpool 112 422 0 64 11 0 11 11 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x27: addq $0x8,%rsp x86_ipi_db(ffffffff8347eff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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(ffffffff83620c30) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83620c30) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff800033f94050) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800033f94050) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x70c26e4bf590, count: 9 ddb{0}> trace x86_ipi_db(ffffffff8347eff0) at x86_ipi_db+0x27 sys/arch/amd64/amd64/db_interface.c:393 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(ffffffff83620c30) at __mp_lock+0x192 __mp_lock_spin sys/kern/kern_lock.c:113 [inline] __mp_lock(ffffffff83620c30) at __mp_lock+0x192 sys/kern/kern_lock.c:144 syscall(ffff800033f94050) at syscall+0xad6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800033f94050) at syscall+0xad6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x70c26e4bf590, count: -6 ddb{0}> machine ddbcpu 1 Stopped at db_enter+0x25: addq $0x8,%rsp db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830bbf6c) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806cdb9c58,20000000,20011000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd806cdb9c58,20000000,20011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1623 kern_sysctl(ffff8000372901a4,5,20000100,ffff8000372901d8,0,37,cb9e0486c29f2e34) at kern_sysctl+0x500 sysctl_vsunlock sys/kern/kern_sysctl.c:209 [inline] kern_sysctl(ffff8000372901a4,5,20000100,ffff8000372901d8,0,37,cb9e0486c29f2e34) at kern_sysctl+0x500 sys/kern/kern_sysctl.c:508 sys_sysctl(ffff800032b85c08,ffff800037290310,ffff800037290260) at sys_sysctl+0x425 syscall(ffff800037290310) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800037290310) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8b60b953570, count: 7 ddb{1}> trace db_enter() at db_enter+0x25 sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff830bbf6c) at panic+0x1e5 sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd806cdb9c58,20000000,20011000) at uvm_fault_unwire_locked+0x487 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd806cdb9c58,20000000,20011000) at uvm_fault_unwire+0x55 sys/uvm/uvm_fault.c:1623 kern_sysctl(ffff8000372901a4,5,20000100,ffff8000372901d8,0,37,cb9e0486c29f2e34) at kern_sysctl+0x500 sysctl_vsunlock sys/kern/kern_sysctl.c:209 [inline] kern_sysctl(ffff8000372901a4,5,20000100,ffff8000372901d8,0,37,cb9e0486c29f2e34) at kern_sysctl+0x500 sys/kern/kern_sysctl.c:508 sys_sysctl(ffff800032b85c08,ffff800037290310,ffff800037290260) at sys_sysctl+0x425 syscall(ffff800037290310) at syscall+0xbb6 mi_syscall sys/sys/syscall_mi.h:178 [inline] syscall(ffff800037290310) at syscall+0xbb6 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x8b60b953570, count: -8