panic: uvm_fault_unwire_locked: address not in map Stopped at db_enter+0x1c: addq $0x8,%rsp TID PID UID PRFLAGS PFLAGS CPU COMMAND *113817 26630 0 0x8000000 0x4000000 1 syz-executor.3 27618 56954 0 0x14000 0x200 0 zerothread db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82925a7d) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd8069054020,20000000,20002000) at uvm_fault_unwire_locked+0x331 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd8069054020,20000000,20002000) at uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 sys_sysctl(ffff80002a1ac7f0,ffff80002a2928d0,ffff80002a292830) at sys_sysctl+0x236 sys/kern/kern_sysctl.c:259 syscall(ffff80002a2928d0) at syscall+0x4e2 mi_syscall sys/sys/syscall_mi.h:177 [inline] syscall(ffff80002a2928d0) at syscall+0x4e2 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x575be5521d0, count: 8 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(ffffffff82925a7d) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd8069054020,20000000,20002000) at uvm_fault_unwire_locked+0x331 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd8069054020,20000000,20002000) at uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 sys_sysctl(ffff80002a1ac7f0,ffff80002a2928d0,ffff80002a292830) at sys_sysctl+0x236 sys/kern/kern_sysctl.c:259 syscall(ffff80002a2928d0) at syscall+0x4e2 mi_syscall sys/sys/syscall_mi.h:177 [inline] syscall(ffff80002a2928d0) at syscall+0x4e2 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x575be5521d0, count: -7 ddb{1}> show registers rdi 0 rsi 0x1 rbp 0xffff80002a2925c0 rbx 0xffff800029ceccb7 rdx 0 rcx 0xffff80002a1ac7f0 rax 0xffff800029cebff0 r8 0x101010101010101 r9 0x8080808080808080 r10 0x2a61669e615b04db r11 0xccdaae740f547241 r12 0xffff800029cecab8 r13 0 r14 0 r15 0x1 rip 0xffffffff81a7aa4c db_enter+0x1c cs 0x8 rflags 0x246 rsp 0xffff80002a2925b0 ss 0x10 db_enter+0x1c: addq $0x8,%rsp ddb{1}> show proc PROC (syz-executor.3) tid=113817 pid=26630 tcnt=3 stat=onproc flags process=8000000 proc=4000000 runpri=36, usrpri=50, slppri=36, nice=20 wchan=0x0, wmesg=, ps_single=0x0 forw=0xffffffffffffffff, list=0xffff80002a1ab800,0xffff80002a1ac558 process=0xffff8000ffff79d0 user=0xffff80002a28d000, vmspace=0xfffffd8069054020 estcpu=16, cpticks=0, pctcpu=0.0, user=0, sys=0, intr=0 ddb{1}> ps PID TID PPID UID S FLAGS WAIT COMMAND 26630 307070 44292 0 3 0x8000080 nanoslp syz-executor.3 *26630 113817 44292 0 7 0xc000000 syz-executor.3 26630 126257 44292 0 3 0xc000080 fsleep syz-executor.3 81143 114510 40811 0 3 0x8000002 biowait syz-executor.5 21885 15694 40811 0 3 0x8000082 nanoslp syz-executor.0 63875 83170 40811 0 3 0x8000082 nanoslp syz-executor.7 44292 470603 40811 0 3 0x8000082 nanoslp syz-executor.3 71927 89281 40811 0 3 0x8000082 piperd syz-executor.6 26 270999 40811 0 3 0x8000002 biowait syz-executor.4 42826 350905 40811 0 3 0x8000082 piperd syz-executor.1 59240 323995 40811 0 3 0x8000082 piperd syz-executor.2 40811 480414 42642 0 3 0x1a000082 thrsleep syz-execprog 40811 379511 42642 0 3 0x1e000082 nanoslp syz-execprog 40811 375562 42642 0 3 0x1e000082 wait syz-execprog 40811 445110 42642 0 3 0x1e000082 wait syz-execprog 40811 185184 42642 0 3 0x1e000082 wait syz-execprog 40811 80431 42642 0 3 0x1e000082 thrsleep syz-execprog 40811 10614 42642 0 3 0x1e000082 wait syz-execprog 40811 139934 42642 0 3 0x1e000082 kqread syz-execprog 40811 265347 42642 0 3 0x1e000082 wait syz-execprog 40811 72664 42642 0 3 0x1e000082 wait syz-execprog 40811 432550 42642 0 3 0x1e000082 thrsleep syz-execprog 40811 105827 42642 0 3 0x1e000082 wait syz-execprog 40811 212081 42642 0 3 0x1e000082 wait syz-execprog 40811 213758 42642 0 3 0x1e000082 thrsleep syz-execprog 40811 410585 42642 0 3 0x1e000082 thrsleep syz-execprog 42642 362467 42198 0 3 0x810008a sigsusp ksh 42198 83704 560 0 3 0x1800009a kqread sshd 86366 137664 1 0 3 0x18100083 ttyin getty 560 277241 1 0 3 0x18000088 kqread sshd 51585 365735 37084 73 3 0x19100090 kqread syslogd 37084 333870 1 0 3 0x18100082 sbwait syslogd 24650 273497 1 0 3 0x18100080 kqread resolvd 70337 173382 57383 77 3 0x18100092 kqread dhcpleased 75959 402034 57383 77 3 0x18100092 kqread dhcpleased 57383 505462 1 0 3 0x18000080 kqread dhcpleased 20277 127964 0 0 3 0x14200 bored smr 56954 27618 0 0 7 0x14200 zerothread 34183 45627 0 0 3 0x14200 aiodoned aiodoned 8734 377886 0 0 3 0x14200 syncer update 74783 456825 0 0 3 0x14200 cleaner cleaner 76345 381912 0 0 3 0x14200 reaper reaper 3952 447946 0 0 3 0x14200 pgdaemon pagedaemon 39008 244385 0 0 3 0x14200 bored viomb 83049 505958 0 0 3 0x40014200 acpi0 acpi0 640 448125 0 0 3 0x40014200 idle1 96011 9576 0 0 3 0x14200 bored softnet3 25430 127625 0 0 3 0x14200 bored softnet2 40496 75681 0 0 3 0x14200 bored softnet1 24277 274624 0 0 3 0x14200 bored softnet0 96983 461633 0 0 3 0x14200 bored systqmp 67946 329535 0 0 3 0x14200 bored systq 67387 135965 0 0 3 0x14200 tmoslp softclockmp 53069 181898 0 0 3 0x40014200 tmoslp softclock 18457 192602 0 0 3 0x40014200 idle0 1 40822 0 0 3 0x8000082 wait init 0 0 -1 0 3 0x10200 scheduler swapper ddb{1}> show all locks CPU 0: exclusive mutex &uvm.fpageqlock r = 0 (0xffffffff82d91768) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 mtx_enter_try+0x103 #2 mtx_enter+0x4e sys/kern/kern_lock.c:266 #3 uvm_pagezero_thread+0x79 sys/uvm/uvm_pmemrange.c:2170 #4 proc_trampoline+0x10 Process 26630 (syz-executor.3) thread 0xffff80002a1ac7f0 (113817) shared rwlock vmmaplk r = 0 (0xfffffd8069054118) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 rw_enter+0x32a sys/kern/kern_rwlock.c:309 #2 uvm_fault_unwire+0x35 sys/uvm/uvm_fault.c:1622 #3 sys_sysctl+0x236 sys/kern/kern_sysctl.c:259 #4 syscall+0x4e2 mi_syscall sys/sys/syscall_mi.h:177 [inline] #4 syscall+0x4e2 sys/arch/amd64/amd64/trap.c:577 #5 Xsyscall+0x128 exclusive kernel_lock &kernel_lock r = 0 (0xffffffff82e2be08) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 __mp_acquire_count+0x48 sys/kern/kern_lock.c:227 #2 mi_switch+0x494 sys/kern/sched_bsd.c:470 #3 sleep_finish+0x19d sys/kern/kern_synch.c:414 #4 rw_enter+0x29a sys/kern/kern_rwlock.c:285 #5 uvm_fault_unwire+0x35 sys/uvm/uvm_fault.c:1622 #6 sys_sysctl+0x236 sys/kern/kern_sysctl.c:259 #7 syscall+0x4e2 mi_syscall sys/sys/syscall_mi.h:177 [inline] #7 syscall+0x4e2 sys/arch/amd64/amd64/trap.c:577 #8 Xsyscall+0x128 exclusive rwlock sysctllk r = 0 (0xffffffff82d2dae0) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 rw_enter+0x32a sys/kern/kern_rwlock.c:309 #2 sys_sysctl+0x1ce sys/kern/kern_sysctl.c:238 #3 syscall+0x4e2 mi_syscall sys/sys/syscall_mi.h:177 [inline] #3 syscall+0x4e2 sys/arch/amd64/amd64/trap.c:577 #4 Xsyscall+0x128 Process 81143 (syz-executor.5) thread 0xffff80002a199aa0 (114510) exclusive rrwlock inode r = 0 (0xfffffd807df6cf78) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 rw_enter+0x32a sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8e sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x85 sys/kern/vfs_vnops.c:564 #5 vget+0x1fd sys/kern/vfs_subr.c:676 #6 ufs_ihashget+0x121 sys/ufs/ufs/ufs_ihash.c:119 #7 ffs_vget+0x7c sys/ufs/ffs/ffs_vfsops.c:1201 #8 ufs_lookup+0x1373 sys/ufs/ufs/ufs_lookup.c:478 #9 VOP_LOOKUP+0x5c sys/kern/vfs_vops.c:85 #10 vfs_lookup+0x6e5 sys/kern/vfs_lookup.c:566 #11 namei+0x56a sys/kern/vfs_lookup.c:250 #12 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1855 #13 syscall+0x4e2 mi_syscall sys/sys/syscall_mi.h:177 [inline] #13 syscall+0x4e2 sys/arch/amd64/amd64/trap.c:577 #14 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd8068be32c8) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 rw_enter+0x32a sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8e sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x85 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd3 sys/kern/vfs_lookup.c:418 #6 namei+0x56a sys/kern/vfs_lookup.c:250 #7 dounlinkat+0x9d sys/kern/vfs_syscalls.c:1855 #8 syscall+0x4e2 mi_syscall sys/sys/syscall_mi.h:177 [inline] #8 syscall+0x4e2 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 Process 26 (syz-executor.4) thread 0xffff80002a1997f8 (270999) exclusive rrwlock inode r = 0 (0xfffffd807df6cb38) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 rw_enter+0x32a sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8e sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 ufs_ihashins+0x46 #5 ffs_vget+0x141 sys/ufs/ffs/ffs_vfsops.c:1230 #6 ffs_inode_alloc+0x1e4 sys/ufs/ffs/ffs_alloc.c:393 #7 ufs_mkdir+0xe6 sys/ufs/ufs/ufs_vnops.c:1117 #8 VOP_MKDIR+0xc3 sys/kern/vfs_vops.c:388 #9 domkdirat+0x125 sys/kern/vfs_syscalls.c:3077 #10 syscall+0x4e2 mi_syscall sys/sys/syscall_mi.h:177 [inline] #10 syscall+0x4e2 sys/arch/amd64/amd64/trap.c:577 #11 Xsyscall+0x128 exclusive rrwlock inode r = 0 (0xfffffd806baa00a0) #0 witness_lock+0x446 stacktrace_save sys/sys/stacktrace.h:37 [inline] #0 witness_lock+0x446 sys/kern/subr_witness.c:1187 #1 rw_enter+0x32a sys/kern/kern_rwlock.c:309 #2 rrw_enter+0x8e sys/kern/kern_rwlock.c:464 #3 VOP_LOCK+0x8b sys/kern/vfs_vops.c:518 #4 vn_lock+0x85 sys/kern/vfs_vnops.c:564 #5 vfs_lookup+0xd3 sys/kern/vfs_lookup.c:418 #6 namei+0x56a sys/kern/vfs_lookup.c:250 #7 domkdirat+0x79 sys/kern/vfs_syscalls.c:3062 #8 syscall+0x4e2 mi_syscall sys/sys/syscall_mi.h:177 [inline] #8 syscall+0x4e2 sys/arch/amd64/amd64/trap.c:577 #9 Xsyscall+0x128 ddb{1}> show malloc Type InUse MemUse HighUse Limit Requests Type Lim devbuf 10170 6407K 6419K 166960K 11251 0 pcb 15 10K 10K 166960K 15 0 rtable 234 6K 6K 166960K 380 0 pf 29 8K 8K 166960K 32 0 ifaddr 44 15K 15K 166960K 50 0 ifgroup 50 2K 2K 166960K 55 0 counters 64 36K 36K 166960K 66 0 ioctlops 0 0K 2K 166960K 30 0 mount 1 1K 1K 166960K 1 0 log 0 0K 0K 166960K 4 0 vnodes 1272 80K 80K 166960K 1288 0 UFS quota 1 32K 32K 166960K 1 0 UFS mount 5 36K 36K 166960K 5 0 shm 2 1K 1K 166960K 2 0 VM map 2 1K 1K 166960K 2 0 sem 2 0K 0K 166960K 2 0 dirhash 12 2K 2K 166960K 12 0 ACPI 1697 195K 286K 166960K 12548 0 file desc 11 37K 89K 166960K 192 0 proc 56 78K 127K 166960K 499 0 subproc 0 0K 0K 166960K 13 0 NFS srvsock 1 0K 0K 166960K 1 0 NFS daemon 1 16K 16K 166960K 1 0 in_multi 99 7K 7K 166960K 110 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 25 122K 122K 166960K 25 0 exec 0 0K 1K 166960K 405 0 tdb 3 0K 0K 166960K 3 0 VM swap 8 62K 64K 166960K 10 0 UVM amap 222 73K 74K 166960K 4811 0 UVM aobj 3 2K 2K 166960K 3 0 pinsyscall 31 62K 100K 166960K 1480 0 memdesc 1 4K 4K 166960K 1 0 crypto data 1 1K 1K 166960K 1 0 NDP 27 2K 2K 166960K 30 0 temp 1 6796K 6860K 166960K 4857 0 kqueue 12 18K 18K 166960K 34 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 38 0 35 1 0 1 1 0 8 0 rtentry 112 122 0 12 4 0 4 4 0 8 0 unpcb 144 45 0 32 1 0 1 1 0 8 0 syncache 336 8 0 8 2 1 1 1 0 8 1 tcpqe 32 282 0 282 2 2 0 1 0 8 0 tcpcb 808 12 0 9 1 0 1 1 0 8 0 arp 120 20 0 2 1 0 1 1 0 8 0 inpcb 392 66 0 60 1 0 1 1 0 8 0 nd6 136 27 0 3 2 1 1 1 0 8 0 kcovpl 48 1 0 1 1 1 0 1 0 8 0 art_heap8 4096 1 0 0 1 0 1 1 0 8 0 art_heap4 256 500 0 48 32 3 29 29 0 8 0 art_table 32 501 0 48 5 1 4 4 0 8 0 art_node 16 121 0 21 1 0 1 1 0 8 0 dirhash 1024 17 0 0 3 0 3 3 0 8 0 dino2pl 256 1627 0 110 95 0 95 95 0 8 0 ffsino 272 1627 0 110 103 1 102 102 0 8 0 nchpl 144 2023 0 252 66 0 66 66 0 8 0 uvmvnodes 80 1649 0 0 34 0 34 34 0 8 0 vnodes 216 1649 0 0 92 0 92 92 0 8 0 namei 1024 7583 0 7582 3 2 1 2 0 8 0 percpumem 16 47 0 1 1 0 1 1 0 8 0 kstatmem 264 24 0 2 2 0 2 2 0 8 0 scxspl 216 8336 0 8334 11 10 1 8 1 8 0 plimitpl 152 50 0 35 1 0 1 1 0 8 0 sigapl 424 517 0 475 7 1 6 6 0 8 0 futexpl 64 159 0 158 2 1 1 1 0 8 0 knotepl 120 114 0 0 4 0 4 4 0 8 0 kqueuepl 216 30 0 22 1 0 1 1 0 8 0 pipepl 320 182 0 154 5 2 3 3 0 8 0 fdescpl 496 499 0 477 8 3 5 5 0 8 1 filepl 152 2116 0 1988 7 1 6 6 0 8 0 lockfpl 104 6 0 4 1 0 1 1 0 8 0 lockfspl 48 4 0 2 1 0 1 1 0 8 0 sessionpl 144 32 0 16 1 0 1 1 0 8 0 pgrppl 48 32 0 16 1 0 1 1 0 8 0 ucredpl 104 96 0 86 1 0 1 1 0 8 0 zombiepl 144 477 0 475 2 1 1 1 0 8 0 processpl 1136 517 0 475 5 1 4 4 0 8 0 procpl 680 606 0 548 8 2 6 6 0 8 0 sockpl 584 149 0 127 2 0 2 2 0 8 0 mcl8k 8192 3 0 0 1 0 1 1 0 8 0 mcl4k 4096 3 0 0 1 0 1 1 0 8 0 mcl2k 2048 338 0 0 43 0 43 43 0 8 0 mtagpl 96 3 0 0 1 0 1 1 0 8 0 mbufpl 256 361 0 0 23 0 23 23 0 8 0 bufpl 280 5026 0 168 347 0 347 347 0 8 0 anonpl 24 377806 0 373689 62 16 46 53 0 186 18 amapchunkpl 152 18289 0 17795 40 15 25 27 0 158 2 amappl16 200 11442 0 11369 9 4 5 5 0 8 0 amappl15 192 45 0 45 2 2 0 1 0 8 0 amappl14 184 214 0 204 3 1 2 2 0 8 1 amappl13 176 28 0 28 2 2 0 1 0 8 0 amappl12 168 1215 0 1191 3 1 2 2 0 8 0 amappl11 160 65 0 55 1 0 1 1 0 8 0 amappl10 152 74 0 65 1 0 1 1 0 8 0 amappl9 144 436 0 436 2 1 1 1 0 8 1 amappl8 136 192 0 162 3 1 2 2 0 8 0 amappl7 128 113 0 103 1 0 1 1 0 8 0 amappl6 120 443 0 429 3 1 2 2 0 8 1 amappl5 112 228 0 216 1 0 1 1 0 8 0 amappl4 104 718 0 687 3 1 2 2 0 8 1 amappl3 96 3653 0 3596 3 1 2 2 0 8 0 amappl2 88 1114 0 1050 6 2 4 4 0 8 2 amappl1 80 14748 0 14270 33 13 20 22 0 8 8 amappl 88 4089 0 3949 6 2 4 4 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 2 0 0 1 0 1 1 0 8 0 uaddrrnd 24 499 0 477 1 0 1 1 0 8 0 uaddrbest 32 2 0 0 1 0 1 1 0 8 0 uaddr 24 499 0 477 1 0 1 1 0 8 0 vmmpekpl 168 12566 0 12533 2 0 2 2 0 8 0 vmmpepl 168 70724 0 69287 125 16 109 114 0 357 36 vmsppl 448 498 0 477 5 1 4 4 0 8 0 rwobjpl 56 34179 0 31606 56 10 46 47 0 8 5 pdppl 4096 1005 0 954 127 50 77 77 0 8 26 pvpl 32 46221 0 0 373 0 373 373 0 265 0 pmappl 248 498 0 477 5 2 3 3 0 8 1 extentpl 40 56 0 38 1 0 1 1 0 8 0 phpool 112 453 0 62 12 0 12 12 0 8 0 ddb{1}> machine ddbcpu 0 Stopped at x86_ipi_db+0x1e: addq $0x8,%rsp x86_ipi_db(ffffffff82c77ff0) 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 mtx_leave(ffffffff82d91758) at mtx_leave+0x40 sys/kern/kern_lock.c:359 msleep(ffffffff82d915d4,ffffffff82d91758,7f,ffffffff82895494,0) at msleep+0x133 sys/kern/kern_synch.c:232 uvm_pagezero_thread(ffff80002a1452b0) at uvm_pagezero_thread+0xb0 sys/uvm/uvm_pmemrange.c:2171 end trace frame: 0x0, count: 9 ddb{0}> trace x86_ipi_db(ffffffff82c77ff0) 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 mtx_leave(ffffffff82d91758) at mtx_leave+0x40 sys/kern/kern_lock.c:359 msleep(ffffffff82d915d4,ffffffff82d91758,7f,ffffffff82895494,0) at msleep+0x133 sys/kern/kern_synch.c:232 uvm_pagezero_thread(ffff80002a1452b0) at uvm_pagezero_thread+0xb0 sys/uvm/uvm_pmemrange.c:2171 end trace frame: 0x0, count: -6 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(ffffffff82925a7d) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd8069054020,20000000,20002000) at uvm_fault_unwire_locked+0x331 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd8069054020,20000000,20002000) at uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 sys_sysctl(ffff80002a1ac7f0,ffff80002a2928d0,ffff80002a292830) at sys_sysctl+0x236 sys/kern/kern_sysctl.c:259 syscall(ffff80002a2928d0) at syscall+0x4e2 mi_syscall sys/sys/syscall_mi.h:177 [inline] syscall(ffff80002a2928d0) at syscall+0x4e2 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x575be5521d0, count: 8 ddb{1}> trace db_enter() at db_enter+0x1c sys/arch/amd64/amd64/db_interface.c:437 panic(ffffffff82925a7d) at panic+0x17b sys/kern/subr_prf.c:198 uvm_fault_unwire_locked(fffffd8069054020,20000000,20002000) at uvm_fault_unwire_locked+0x331 sys/uvm/uvm_fault.c:1663 uvm_fault_unwire(fffffd8069054020,20000000,20002000) at uvm_fault_unwire+0x43 sys/uvm/uvm_fault.c:1623 sys_sysctl(ffff80002a1ac7f0,ffff80002a2928d0,ffff80002a292830) at sys_sysctl+0x236 sys/kern/kern_sysctl.c:259 syscall(ffff80002a2928d0) at syscall+0x4e2 mi_syscall sys/sys/syscall_mi.h:177 [inline] syscall(ffff80002a2928d0) at syscall+0x4e2 sys/arch/amd64/amd64/trap.c:577 Xsyscall() at Xsyscall+0x128 end of kernel end trace frame: 0x575be5521d0, count: -7